Commit | Line | Data |
---|---|---|
3bc43840 GL |
1 | /* |
2 | * V4L2 Driver for PXA camera host | |
3 | * | |
4 | * Copyright (C) 2006, Sascha Hauer, Pengutronix | |
5 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
283e4a82 | 6 | * Copyright (C) 2016, Robert Jarzmik <robert.jarzmik@free.fr> |
3bc43840 GL |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | ||
3bc43840 GL |
14 | #include <linux/init.h> |
15 | #include <linux/module.h> | |
7102b773 | 16 | #include <linux/io.h> |
3bc43840 | 17 | #include <linux/delay.h> |
283e4a82 | 18 | #include <linux/device.h> |
3bc43840 | 19 | #include <linux/dma-mapping.h> |
8efdb135 | 20 | #include <linux/err.h> |
3bc43840 GL |
21 | #include <linux/errno.h> |
22 | #include <linux/fs.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/kernel.h> | |
25 | #include <linux/mm.h> | |
26 | #include <linux/moduleparam.h> | |
283e4a82 | 27 | #include <linux/of.h> |
3bc43840 | 28 | #include <linux/time.h> |
3bc43840 GL |
29 | #include <linux/device.h> |
30 | #include <linux/platform_device.h> | |
3bc43840 | 31 | #include <linux/clk.h> |
d514edac | 32 | #include <linux/sched.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
1e77d55a RJ |
34 | #include <linux/dmaengine.h> |
35 | #include <linux/dma-mapping.h> | |
36 | #include <linux/dma/pxa-dma.h> | |
3bc43840 | 37 | |
283e4a82 RJ |
38 | #include <media/v4l2-async.h> |
39 | #include <media/v4l2-clk.h> | |
3bc43840 | 40 | #include <media/v4l2-common.h> |
283e4a82 RJ |
41 | #include <media/v4l2-device.h> |
42 | #include <media/v4l2-ioctl.h> | |
e9a1d94f | 43 | #include <media/v4l2-of.h> |
3bc43840 | 44 | |
283e4a82 RJ |
45 | #include <media/videobuf2-dma-sg.h> |
46 | ||
3bc43840 GL |
47 | #include <linux/videodev2.h> |
48 | ||
a71daaa1 | 49 | #include <linux/platform_data/media/camera-pxa.h> |
3bc43840 | 50 | |
64dc3c1a | 51 | #define PXA_CAM_VERSION "0.0.6" |
3bc43840 GL |
52 | #define PXA_CAM_DRV_NAME "pxa27x-camera" |
53 | ||
283e4a82 RJ |
54 | #define DEFAULT_WIDTH 640 |
55 | #define DEFAULT_HEIGHT 480 | |
56 | ||
5ca11fa3 EM |
57 | /* Camera Interface */ |
58 | #define CICR0 0x0000 | |
59 | #define CICR1 0x0004 | |
60 | #define CICR2 0x0008 | |
61 | #define CICR3 0x000C | |
62 | #define CICR4 0x0010 | |
63 | #define CISR 0x0014 | |
64 | #define CIFR 0x0018 | |
65 | #define CITOR 0x001C | |
66 | #define CIBR0 0x0028 | |
67 | #define CIBR1 0x0030 | |
68 | #define CIBR2 0x0038 | |
69 | ||
70 | #define CICR0_DMAEN (1 << 31) /* DMA request enable */ | |
71 | #define CICR0_PAR_EN (1 << 30) /* Parity enable */ | |
72 | #define CICR0_SL_CAP_EN (1 << 29) /* Capture enable for slave mode */ | |
73 | #define CICR0_ENB (1 << 28) /* Camera interface enable */ | |
74 | #define CICR0_DIS (1 << 27) /* Camera interface disable */ | |
75 | #define CICR0_SIM (0x7 << 24) /* Sensor interface mode mask */ | |
76 | #define CICR0_TOM (1 << 9) /* Time-out mask */ | |
77 | #define CICR0_RDAVM (1 << 8) /* Receive-data-available mask */ | |
78 | #define CICR0_FEM (1 << 7) /* FIFO-empty mask */ | |
79 | #define CICR0_EOLM (1 << 6) /* End-of-line mask */ | |
80 | #define CICR0_PERRM (1 << 5) /* Parity-error mask */ | |
81 | #define CICR0_QDM (1 << 4) /* Quick-disable mask */ | |
82 | #define CICR0_CDM (1 << 3) /* Disable-done mask */ | |
83 | #define CICR0_SOFM (1 << 2) /* Start-of-frame mask */ | |
84 | #define CICR0_EOFM (1 << 1) /* End-of-frame mask */ | |
85 | #define CICR0_FOM (1 << 0) /* FIFO-overrun mask */ | |
86 | ||
87 | #define CICR1_TBIT (1 << 31) /* Transparency bit */ | |
88 | #define CICR1_RGBT_CONV (0x3 << 29) /* RGBT conversion mask */ | |
89 | #define CICR1_PPL (0x7ff << 15) /* Pixels per line mask */ | |
90 | #define CICR1_RGB_CONV (0x7 << 12) /* RGB conversion mask */ | |
91 | #define CICR1_RGB_F (1 << 11) /* RGB format */ | |
92 | #define CICR1_YCBCR_F (1 << 10) /* YCbCr format */ | |
93 | #define CICR1_RGB_BPP (0x7 << 7) /* RGB bis per pixel mask */ | |
94 | #define CICR1_RAW_BPP (0x3 << 5) /* Raw bis per pixel mask */ | |
95 | #define CICR1_COLOR_SP (0x3 << 3) /* Color space mask */ | |
96 | #define CICR1_DW (0x7 << 0) /* Data width mask */ | |
97 | ||
98 | #define CICR2_BLW (0xff << 24) /* Beginning-of-line pixel clock | |
99 | wait count mask */ | |
100 | #define CICR2_ELW (0xff << 16) /* End-of-line pixel clock | |
101 | wait count mask */ | |
102 | #define CICR2_HSW (0x3f << 10) /* Horizontal sync pulse width mask */ | |
103 | #define CICR2_BFPW (0x3f << 3) /* Beginning-of-frame pixel clock | |
104 | wait count mask */ | |
105 | #define CICR2_FSW (0x7 << 0) /* Frame stabilization | |
106 | wait count mask */ | |
107 | ||
108 | #define CICR3_BFW (0xff << 24) /* Beginning-of-frame line clock | |
109 | wait count mask */ | |
110 | #define CICR3_EFW (0xff << 16) /* End-of-frame line clock | |
111 | wait count mask */ | |
112 | #define CICR3_VSW (0x3f << 10) /* Vertical sync pulse width mask */ | |
113 | #define CICR3_BFPW (0x3f << 3) /* Beginning-of-frame pixel clock | |
114 | wait count mask */ | |
115 | #define CICR3_LPF (0x7ff << 0) /* Lines per frame mask */ | |
116 | ||
117 | #define CICR4_MCLK_DLY (0x3 << 24) /* MCLK Data Capture Delay mask */ | |
118 | #define CICR4_PCLK_EN (1 << 23) /* Pixel clock enable */ | |
119 | #define CICR4_PCP (1 << 22) /* Pixel clock polarity */ | |
120 | #define CICR4_HSP (1 << 21) /* Horizontal sync polarity */ | |
121 | #define CICR4_VSP (1 << 20) /* Vertical sync polarity */ | |
122 | #define CICR4_MCLK_EN (1 << 19) /* MCLK enable */ | |
123 | #define CICR4_FR_RATE (0x7 << 8) /* Frame rate mask */ | |
124 | #define CICR4_DIV (0xff << 0) /* Clock divisor mask */ | |
125 | ||
126 | #define CISR_FTO (1 << 15) /* FIFO time-out */ | |
127 | #define CISR_RDAV_2 (1 << 14) /* Channel 2 receive data available */ | |
128 | #define CISR_RDAV_1 (1 << 13) /* Channel 1 receive data available */ | |
129 | #define CISR_RDAV_0 (1 << 12) /* Channel 0 receive data available */ | |
130 | #define CISR_FEMPTY_2 (1 << 11) /* Channel 2 FIFO empty */ | |
131 | #define CISR_FEMPTY_1 (1 << 10) /* Channel 1 FIFO empty */ | |
132 | #define CISR_FEMPTY_0 (1 << 9) /* Channel 0 FIFO empty */ | |
133 | #define CISR_EOL (1 << 8) /* End of line */ | |
134 | #define CISR_PAR_ERR (1 << 7) /* Parity error */ | |
135 | #define CISR_CQD (1 << 6) /* Camera interface quick disable */ | |
136 | #define CISR_CDD (1 << 5) /* Camera interface disable done */ | |
137 | #define CISR_SOF (1 << 4) /* Start of frame */ | |
138 | #define CISR_EOF (1 << 3) /* End of frame */ | |
139 | #define CISR_IFO_2 (1 << 2) /* FIFO overrun for Channel 2 */ | |
140 | #define CISR_IFO_1 (1 << 1) /* FIFO overrun for Channel 1 */ | |
141 | #define CISR_IFO_0 (1 << 0) /* FIFO overrun for Channel 0 */ | |
142 | ||
143 | #define CIFR_FLVL2 (0x7f << 23) /* FIFO 2 level mask */ | |
144 | #define CIFR_FLVL1 (0x7f << 16) /* FIFO 1 level mask */ | |
145 | #define CIFR_FLVL0 (0xff << 8) /* FIFO 0 level mask */ | |
146 | #define CIFR_THL_0 (0x3 << 4) /* Threshold Level for Channel 0 FIFO */ | |
147 | #define CIFR_RESET_F (1 << 3) /* Reset input FIFOs */ | |
148 | #define CIFR_FEN2 (1 << 2) /* FIFO enable for channel 2 */ | |
149 | #define CIFR_FEN1 (1 << 1) /* FIFO enable for channel 1 */ | |
150 | #define CIFR_FEN0 (1 << 0) /* FIFO enable for channel 0 */ | |
151 | ||
7102b773 GL |
152 | #define CICR0_SIM_MP (0 << 24) |
153 | #define CICR0_SIM_SP (1 << 24) | |
154 | #define CICR0_SIM_MS (2 << 24) | |
155 | #define CICR0_SIM_EP (3 << 24) | |
156 | #define CICR0_SIM_ES (4 << 24) | |
157 | ||
158 | #define CICR1_DW_VAL(x) ((x) & CICR1_DW) /* Data bus width */ | |
159 | #define CICR1_PPL_VAL(x) (((x) << 15) & CICR1_PPL) /* Pixels per line */ | |
a5462e5b MR |
160 | #define CICR1_COLOR_SP_VAL(x) (((x) << 3) & CICR1_COLOR_SP) /* color space */ |
161 | #define CICR1_RGB_BPP_VAL(x) (((x) << 7) & CICR1_RGB_BPP) /* bpp for rgb */ | |
162 | #define CICR1_RGBT_CONV_VAL(x) (((x) << 29) & CICR1_RGBT_CONV) /* rgbt conv */ | |
7102b773 GL |
163 | |
164 | #define CICR2_BLW_VAL(x) (((x) << 24) & CICR2_BLW) /* Beginning-of-line pixel clock wait count */ | |
165 | #define CICR2_ELW_VAL(x) (((x) << 16) & CICR2_ELW) /* End-of-line pixel clock wait count */ | |
166 | #define CICR2_HSW_VAL(x) (((x) << 10) & CICR2_HSW) /* Horizontal sync pulse width */ | |
167 | #define CICR2_BFPW_VAL(x) (((x) << 3) & CICR2_BFPW) /* Beginning-of-frame pixel clock wait count */ | |
168 | #define CICR2_FSW_VAL(x) (((x) << 0) & CICR2_FSW) /* Frame stabilization wait count */ | |
169 | ||
170 | #define CICR3_BFW_VAL(x) (((x) << 24) & CICR3_BFW) /* Beginning-of-frame line clock wait count */ | |
171 | #define CICR3_EFW_VAL(x) (((x) << 16) & CICR3_EFW) /* End-of-frame line clock wait count */ | |
172 | #define CICR3_VSW_VAL(x) (((x) << 11) & CICR3_VSW) /* Vertical sync pulse width */ | |
173 | #define CICR3_LPF_VAL(x) (((x) << 0) & CICR3_LPF) /* Lines per frame */ | |
174 | ||
3bc43840 GL |
175 | #define CICR0_IRQ_MASK (CICR0_TOM | CICR0_RDAVM | CICR0_FEM | CICR0_EOLM | \ |
176 | CICR0_PERRM | CICR0_QDM | CICR0_CDM | CICR0_SOFM | \ | |
177 | CICR0_EOFM | CICR0_FOM) | |
178 | ||
b36bcbd6 | 179 | #define sensor_call(cam, o, f, args...) \ |
283e4a82 RJ |
180 | v4l2_subdev_call(cam->sensor, o, f, ##args) |
181 | ||
182 | /* | |
183 | * Format handling | |
184 | */ | |
34b27b13 HV |
185 | |
186 | /** | |
187 | * enum pxa_mbus_packing - data packing types on the media-bus | |
188 | * @PXA_MBUS_PACKING_NONE: no packing, bit-for-bit transfer to RAM, one | |
189 | * sample represents one pixel | |
190 | * @PXA_MBUS_PACKING_2X8_PADHI: 16 bits transferred in 2 8-bit samples, in the | |
191 | * possibly incomplete byte high bits are padding | |
192 | * @PXA_MBUS_PACKING_EXTEND16: sample width (e.g., 10 bits) has to be extended | |
193 | * to 16 bits | |
194 | */ | |
195 | enum pxa_mbus_packing { | |
196 | PXA_MBUS_PACKING_NONE, | |
197 | PXA_MBUS_PACKING_2X8_PADHI, | |
198 | PXA_MBUS_PACKING_EXTEND16, | |
199 | }; | |
200 | ||
201 | /** | |
202 | * enum pxa_mbus_order - sample order on the media bus | |
203 | * @PXA_MBUS_ORDER_LE: least significant sample first | |
204 | * @PXA_MBUS_ORDER_BE: most significant sample first | |
205 | */ | |
206 | enum pxa_mbus_order { | |
207 | PXA_MBUS_ORDER_LE, | |
208 | PXA_MBUS_ORDER_BE, | |
209 | }; | |
210 | ||
211 | /** | |
212 | * enum pxa_mbus_layout - planes layout in memory | |
213 | * @PXA_MBUS_LAYOUT_PACKED: color components packed | |
214 | * @PXA_MBUS_LAYOUT_PLANAR_2Y_U_V: YUV components stored in 3 planes (4:2:2) | |
215 | * @PXA_MBUS_LAYOUT_PLANAR_2Y_C: YUV components stored in a luma and a | |
216 | * chroma plane (C plane is half the size | |
217 | * of Y plane) | |
218 | * @PXA_MBUS_LAYOUT_PLANAR_Y_C: YUV components stored in a luma and a | |
219 | * chroma plane (C plane is the same size | |
220 | * as Y plane) | |
221 | */ | |
222 | enum pxa_mbus_layout { | |
223 | PXA_MBUS_LAYOUT_PACKED = 0, | |
224 | PXA_MBUS_LAYOUT_PLANAR_2Y_U_V, | |
225 | PXA_MBUS_LAYOUT_PLANAR_2Y_C, | |
226 | PXA_MBUS_LAYOUT_PLANAR_Y_C, | |
227 | }; | |
228 | ||
229 | /** | |
230 | * struct pxa_mbus_pixelfmt - Data format on the media bus | |
231 | * @name: Name of the format | |
232 | * @fourcc: Fourcc code, that will be obtained if the data is | |
233 | * stored in memory in the following way: | |
234 | * @packing: Type of sample-packing, that has to be used | |
235 | * @order: Sample order when storing in memory | |
236 | * @bits_per_sample: How many bits the bridge has to sample | |
237 | */ | |
238 | struct pxa_mbus_pixelfmt { | |
239 | const char *name; | |
240 | u32 fourcc; | |
241 | enum pxa_mbus_packing packing; | |
242 | enum pxa_mbus_order order; | |
243 | enum pxa_mbus_layout layout; | |
244 | u8 bits_per_sample; | |
245 | }; | |
246 | ||
247 | /** | |
248 | * struct pxa_mbus_lookup - Lookup FOURCC IDs by mediabus codes for pass-through | |
249 | * @code: mediabus pixel-code | |
250 | * @fmt: pixel format description | |
251 | */ | |
252 | struct pxa_mbus_lookup { | |
253 | u32 code; | |
254 | struct pxa_mbus_pixelfmt fmt; | |
255 | }; | |
256 | ||
257 | static const struct pxa_mbus_lookup mbus_fmt[] = { | |
258 | { | |
259 | .code = MEDIA_BUS_FMT_YUYV8_2X8, | |
260 | .fmt = { | |
261 | .fourcc = V4L2_PIX_FMT_YUYV, | |
262 | .name = "YUYV", | |
263 | .bits_per_sample = 8, | |
264 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
265 | .order = PXA_MBUS_ORDER_LE, | |
266 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
267 | }, | |
268 | }, { | |
269 | .code = MEDIA_BUS_FMT_YVYU8_2X8, | |
270 | .fmt = { | |
271 | .fourcc = V4L2_PIX_FMT_YVYU, | |
272 | .name = "YVYU", | |
273 | .bits_per_sample = 8, | |
274 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
275 | .order = PXA_MBUS_ORDER_LE, | |
276 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
277 | }, | |
278 | }, { | |
279 | .code = MEDIA_BUS_FMT_UYVY8_2X8, | |
280 | .fmt = { | |
281 | .fourcc = V4L2_PIX_FMT_UYVY, | |
282 | .name = "UYVY", | |
283 | .bits_per_sample = 8, | |
284 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
285 | .order = PXA_MBUS_ORDER_LE, | |
286 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
287 | }, | |
288 | }, { | |
289 | .code = MEDIA_BUS_FMT_VYUY8_2X8, | |
290 | .fmt = { | |
291 | .fourcc = V4L2_PIX_FMT_VYUY, | |
292 | .name = "VYUY", | |
293 | .bits_per_sample = 8, | |
294 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
295 | .order = PXA_MBUS_ORDER_LE, | |
296 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
297 | }, | |
298 | }, { | |
299 | .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE, | |
300 | .fmt = { | |
301 | .fourcc = V4L2_PIX_FMT_RGB555, | |
302 | .name = "RGB555", | |
303 | .bits_per_sample = 8, | |
304 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
305 | .order = PXA_MBUS_ORDER_LE, | |
306 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
307 | }, | |
308 | }, { | |
309 | .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, | |
310 | .fmt = { | |
311 | .fourcc = V4L2_PIX_FMT_RGB555X, | |
312 | .name = "RGB555X", | |
313 | .bits_per_sample = 8, | |
314 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
315 | .order = PXA_MBUS_ORDER_BE, | |
316 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
317 | }, | |
318 | }, { | |
319 | .code = MEDIA_BUS_FMT_RGB565_2X8_LE, | |
320 | .fmt = { | |
321 | .fourcc = V4L2_PIX_FMT_RGB565, | |
322 | .name = "RGB565", | |
323 | .bits_per_sample = 8, | |
324 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
325 | .order = PXA_MBUS_ORDER_LE, | |
326 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
327 | }, | |
328 | }, { | |
329 | .code = MEDIA_BUS_FMT_RGB565_2X8_BE, | |
330 | .fmt = { | |
331 | .fourcc = V4L2_PIX_FMT_RGB565X, | |
332 | .name = "RGB565X", | |
333 | .bits_per_sample = 8, | |
334 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
335 | .order = PXA_MBUS_ORDER_BE, | |
336 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
337 | }, | |
338 | }, { | |
339 | .code = MEDIA_BUS_FMT_SBGGR8_1X8, | |
340 | .fmt = { | |
341 | .fourcc = V4L2_PIX_FMT_SBGGR8, | |
342 | .name = "Bayer 8 BGGR", | |
343 | .bits_per_sample = 8, | |
344 | .packing = PXA_MBUS_PACKING_NONE, | |
345 | .order = PXA_MBUS_ORDER_LE, | |
346 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
347 | }, | |
348 | }, { | |
349 | .code = MEDIA_BUS_FMT_SBGGR10_1X10, | |
350 | .fmt = { | |
351 | .fourcc = V4L2_PIX_FMT_SBGGR10, | |
352 | .name = "Bayer 10 BGGR", | |
353 | .bits_per_sample = 10, | |
354 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
355 | .order = PXA_MBUS_ORDER_LE, | |
356 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
357 | }, | |
358 | }, { | |
359 | .code = MEDIA_BUS_FMT_Y8_1X8, | |
360 | .fmt = { | |
361 | .fourcc = V4L2_PIX_FMT_GREY, | |
362 | .name = "Grey", | |
363 | .bits_per_sample = 8, | |
364 | .packing = PXA_MBUS_PACKING_NONE, | |
365 | .order = PXA_MBUS_ORDER_LE, | |
366 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
367 | }, | |
368 | }, { | |
369 | .code = MEDIA_BUS_FMT_Y10_1X10, | |
370 | .fmt = { | |
371 | .fourcc = V4L2_PIX_FMT_Y10, | |
372 | .name = "Grey 10bit", | |
373 | .bits_per_sample = 10, | |
374 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
375 | .order = PXA_MBUS_ORDER_LE, | |
376 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
377 | }, | |
378 | }, { | |
379 | .code = MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, | |
380 | .fmt = { | |
381 | .fourcc = V4L2_PIX_FMT_SBGGR10, | |
382 | .name = "Bayer 10 BGGR", | |
383 | .bits_per_sample = 8, | |
384 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
385 | .order = PXA_MBUS_ORDER_LE, | |
386 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
387 | }, | |
388 | }, { | |
389 | .code = MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE, | |
390 | .fmt = { | |
391 | .fourcc = V4L2_PIX_FMT_SBGGR10, | |
392 | .name = "Bayer 10 BGGR", | |
393 | .bits_per_sample = 8, | |
394 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
395 | .order = PXA_MBUS_ORDER_BE, | |
396 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
397 | }, | |
398 | }, { | |
399 | .code = MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE, | |
400 | .fmt = { | |
401 | .fourcc = V4L2_PIX_FMT_RGB444, | |
402 | .name = "RGB444", | |
403 | .bits_per_sample = 8, | |
404 | .packing = PXA_MBUS_PACKING_2X8_PADHI, | |
405 | .order = PXA_MBUS_ORDER_BE, | |
406 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
407 | }, | |
408 | }, { | |
409 | .code = MEDIA_BUS_FMT_UYVY8_1X16, | |
410 | .fmt = { | |
411 | .fourcc = V4L2_PIX_FMT_UYVY, | |
412 | .name = "UYVY 16bit", | |
413 | .bits_per_sample = 16, | |
414 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
415 | .order = PXA_MBUS_ORDER_LE, | |
416 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
417 | }, | |
418 | }, { | |
419 | .code = MEDIA_BUS_FMT_VYUY8_1X16, | |
420 | .fmt = { | |
421 | .fourcc = V4L2_PIX_FMT_VYUY, | |
422 | .name = "VYUY 16bit", | |
423 | .bits_per_sample = 16, | |
424 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
425 | .order = PXA_MBUS_ORDER_LE, | |
426 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
427 | }, | |
428 | }, { | |
429 | .code = MEDIA_BUS_FMT_YUYV8_1X16, | |
430 | .fmt = { | |
431 | .fourcc = V4L2_PIX_FMT_YUYV, | |
432 | .name = "YUYV 16bit", | |
433 | .bits_per_sample = 16, | |
434 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
435 | .order = PXA_MBUS_ORDER_LE, | |
436 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
437 | }, | |
438 | }, { | |
439 | .code = MEDIA_BUS_FMT_YVYU8_1X16, | |
440 | .fmt = { | |
441 | .fourcc = V4L2_PIX_FMT_YVYU, | |
442 | .name = "YVYU 16bit", | |
443 | .bits_per_sample = 16, | |
444 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
445 | .order = PXA_MBUS_ORDER_LE, | |
446 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
447 | }, | |
448 | }, { | |
449 | .code = MEDIA_BUS_FMT_SGRBG8_1X8, | |
450 | .fmt = { | |
451 | .fourcc = V4L2_PIX_FMT_SGRBG8, | |
452 | .name = "Bayer 8 GRBG", | |
453 | .bits_per_sample = 8, | |
454 | .packing = PXA_MBUS_PACKING_NONE, | |
455 | .order = PXA_MBUS_ORDER_LE, | |
456 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
457 | }, | |
458 | }, { | |
459 | .code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, | |
460 | .fmt = { | |
461 | .fourcc = V4L2_PIX_FMT_SGRBG10DPCM8, | |
462 | .name = "Bayer 10 BGGR DPCM 8", | |
463 | .bits_per_sample = 8, | |
464 | .packing = PXA_MBUS_PACKING_NONE, | |
465 | .order = PXA_MBUS_ORDER_LE, | |
466 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
467 | }, | |
468 | }, { | |
469 | .code = MEDIA_BUS_FMT_SGBRG10_1X10, | |
470 | .fmt = { | |
471 | .fourcc = V4L2_PIX_FMT_SGBRG10, | |
472 | .name = "Bayer 10 GBRG", | |
473 | .bits_per_sample = 10, | |
474 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
475 | .order = PXA_MBUS_ORDER_LE, | |
476 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
477 | }, | |
478 | }, { | |
479 | .code = MEDIA_BUS_FMT_SGRBG10_1X10, | |
480 | .fmt = { | |
481 | .fourcc = V4L2_PIX_FMT_SGRBG10, | |
482 | .name = "Bayer 10 GRBG", | |
483 | .bits_per_sample = 10, | |
484 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
485 | .order = PXA_MBUS_ORDER_LE, | |
486 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
487 | }, | |
488 | }, { | |
489 | .code = MEDIA_BUS_FMT_SRGGB10_1X10, | |
490 | .fmt = { | |
491 | .fourcc = V4L2_PIX_FMT_SRGGB10, | |
492 | .name = "Bayer 10 RGGB", | |
493 | .bits_per_sample = 10, | |
494 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
495 | .order = PXA_MBUS_ORDER_LE, | |
496 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
497 | }, | |
498 | }, { | |
499 | .code = MEDIA_BUS_FMT_SBGGR12_1X12, | |
500 | .fmt = { | |
501 | .fourcc = V4L2_PIX_FMT_SBGGR12, | |
502 | .name = "Bayer 12 BGGR", | |
503 | .bits_per_sample = 12, | |
504 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
505 | .order = PXA_MBUS_ORDER_LE, | |
506 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
507 | }, | |
508 | }, { | |
509 | .code = MEDIA_BUS_FMT_SGBRG12_1X12, | |
510 | .fmt = { | |
511 | .fourcc = V4L2_PIX_FMT_SGBRG12, | |
512 | .name = "Bayer 12 GBRG", | |
513 | .bits_per_sample = 12, | |
514 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
515 | .order = PXA_MBUS_ORDER_LE, | |
516 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
517 | }, | |
518 | }, { | |
519 | .code = MEDIA_BUS_FMT_SGRBG12_1X12, | |
520 | .fmt = { | |
521 | .fourcc = V4L2_PIX_FMT_SGRBG12, | |
522 | .name = "Bayer 12 GRBG", | |
523 | .bits_per_sample = 12, | |
524 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
525 | .order = PXA_MBUS_ORDER_LE, | |
526 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
527 | }, | |
528 | }, { | |
529 | .code = MEDIA_BUS_FMT_SRGGB12_1X12, | |
530 | .fmt = { | |
531 | .fourcc = V4L2_PIX_FMT_SRGGB12, | |
532 | .name = "Bayer 12 RGGB", | |
533 | .bits_per_sample = 12, | |
534 | .packing = PXA_MBUS_PACKING_EXTEND16, | |
535 | .order = PXA_MBUS_ORDER_LE, | |
536 | .layout = PXA_MBUS_LAYOUT_PACKED, | |
537 | }, | |
538 | }, | |
539 | }; | |
540 | ||
541 | static s32 pxa_mbus_bytes_per_line(u32 width, const struct pxa_mbus_pixelfmt *mf) | |
542 | { | |
543 | if (mf->layout != PXA_MBUS_LAYOUT_PACKED) | |
544 | return width * mf->bits_per_sample / 8; | |
545 | ||
546 | switch (mf->packing) { | |
547 | case PXA_MBUS_PACKING_NONE: | |
548 | return width * mf->bits_per_sample / 8; | |
549 | case PXA_MBUS_PACKING_2X8_PADHI: | |
550 | case PXA_MBUS_PACKING_EXTEND16: | |
551 | return width * 2; | |
552 | } | |
553 | return -EINVAL; | |
554 | } | |
555 | ||
556 | static s32 pxa_mbus_image_size(const struct pxa_mbus_pixelfmt *mf, | |
557 | u32 bytes_per_line, u32 height) | |
558 | { | |
559 | switch (mf->packing) { | |
560 | case PXA_MBUS_PACKING_2X8_PADHI: | |
561 | return bytes_per_line * height * 2; | |
562 | default: | |
563 | return -EINVAL; | |
564 | } | |
565 | } | |
566 | ||
567 | static const struct pxa_mbus_pixelfmt *pxa_mbus_find_fmtdesc( | |
568 | u32 code, | |
569 | const struct pxa_mbus_lookup *lookup, | |
570 | int n) | |
571 | { | |
572 | int i; | |
573 | ||
574 | for (i = 0; i < n; i++) | |
575 | if (lookup[i].code == code) | |
576 | return &lookup[i].fmt; | |
577 | ||
578 | return NULL; | |
579 | } | |
580 | ||
581 | static const struct pxa_mbus_pixelfmt *pxa_mbus_get_fmtdesc( | |
582 | u32 code) | |
583 | { | |
584 | return pxa_mbus_find_fmtdesc(code, mbus_fmt, ARRAY_SIZE(mbus_fmt)); | |
585 | } | |
586 | ||
587 | static unsigned int pxa_mbus_config_compatible(const struct v4l2_mbus_config *cfg, | |
588 | unsigned int flags) | |
589 | { | |
590 | unsigned long common_flags; | |
591 | bool hsync = true, vsync = true, pclk, data, mode; | |
592 | bool mipi_lanes, mipi_clock; | |
593 | ||
594 | common_flags = cfg->flags & flags; | |
595 | ||
596 | switch (cfg->type) { | |
597 | case V4L2_MBUS_PARALLEL: | |
598 | hsync = common_flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | | |
599 | V4L2_MBUS_HSYNC_ACTIVE_LOW); | |
600 | vsync = common_flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | | |
601 | V4L2_MBUS_VSYNC_ACTIVE_LOW); | |
602 | /* fall through */ | |
603 | case V4L2_MBUS_BT656: | |
604 | pclk = common_flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | | |
605 | V4L2_MBUS_PCLK_SAMPLE_FALLING); | |
606 | data = common_flags & (V4L2_MBUS_DATA_ACTIVE_HIGH | | |
607 | V4L2_MBUS_DATA_ACTIVE_LOW); | |
608 | mode = common_flags & (V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE); | |
609 | return (!hsync || !vsync || !pclk || !data || !mode) ? | |
610 | 0 : common_flags; | |
611 | case V4L2_MBUS_CSI2: | |
612 | mipi_lanes = common_flags & V4L2_MBUS_CSI2_LANES; | |
613 | mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK | | |
614 | V4L2_MBUS_CSI2_CONTINUOUS_CLOCK); | |
615 | return (!mipi_lanes || !mipi_clock) ? 0 : common_flags; | |
616 | } | |
617 | return 0; | |
618 | } | |
619 | ||
283e4a82 RJ |
620 | /** |
621 | * struct soc_camera_format_xlate - match between host and sensor formats | |
622 | * @code: code of a sensor provided format | |
623 | * @host_fmt: host format after host translation from code | |
624 | * | |
625 | * Host and sensor translation structure. Used in table of host and sensor | |
626 | * formats matchings in soc_camera_device. A host can override the generic list | |
627 | * generation by implementing get_formats(), and use it for format checks and | |
628 | * format setup. | |
629 | */ | |
630 | struct soc_camera_format_xlate { | |
631 | u32 code; | |
34b27b13 | 632 | const struct pxa_mbus_pixelfmt *host_fmt; |
283e4a82 | 633 | }; |
b36bcbd6 | 634 | |
3bc43840 GL |
635 | /* |
636 | * Structures | |
637 | */ | |
a5462e5b MR |
638 | enum pxa_camera_active_dma { |
639 | DMA_Y = 0x1, | |
640 | DMA_U = 0x2, | |
641 | DMA_V = 0x4, | |
642 | }; | |
643 | ||
3bc43840 GL |
644 | /* buffer for one video frame */ |
645 | struct pxa_buffer { | |
646 | /* common v4l buffer stuff -- must be first */ | |
e009ebd5 RJ |
647 | struct vb2_v4l2_buffer vbuf; |
648 | struct list_head queue; | |
27ffaeb0 | 649 | u32 code; |
e009ebd5 | 650 | int nb_planes; |
a5462e5b | 651 | /* our descriptor lists for Y, U and V channels */ |
1e77d55a RJ |
652 | struct dma_async_tx_descriptor *descs[3]; |
653 | dma_cookie_t cookie[3]; | |
654 | struct scatterlist *sg[3]; | |
655 | int sg_len[3]; | |
e009ebd5 | 656 | size_t plane_sizes[3]; |
760697be GL |
657 | int inwork; |
658 | enum pxa_camera_active_dma active_dma; | |
3bc43840 GL |
659 | }; |
660 | ||
3bc43840 | 661 | struct pxa_camera_dev { |
283e4a82 RJ |
662 | struct v4l2_device v4l2_dev; |
663 | struct video_device vdev; | |
664 | struct v4l2_async_notifier notifier; | |
665 | struct vb2_queue vb2_vq; | |
666 | struct v4l2_subdev *sensor; | |
667 | struct soc_camera_format_xlate *user_formats; | |
668 | const struct soc_camera_format_xlate *current_fmt; | |
669 | struct v4l2_pix_format current_pix; | |
670 | ||
671 | struct v4l2_async_subdev asd; | |
672 | struct v4l2_async_subdev *asds[1]; | |
673 | ||
5d28d525 GL |
674 | /* |
675 | * PXA27x is only supposed to handle one camera on its Quick Capture | |
3bc43840 | 676 | * interface. If anyone ever builds hardware to enable more than |
5d28d525 GL |
677 | * one camera, they will have to modify this driver too |
678 | */ | |
3bc43840 GL |
679 | struct clk *clk; |
680 | ||
681 | unsigned int irq; | |
682 | void __iomem *base; | |
a5462e5b | 683 | |
e7c50688 | 684 | int channels; |
1e77d55a | 685 | struct dma_chan *dma_chans[3]; |
3bc43840 | 686 | |
3bc43840 GL |
687 | struct pxacamera_platform_data *pdata; |
688 | struct resource *res; | |
689 | unsigned long platform_flags; | |
cf34cba7 GL |
690 | unsigned long ciclk; |
691 | unsigned long mclk; | |
692 | u32 mclk_divisor; | |
283e4a82 | 693 | struct v4l2_clk *mclk_clk; |
679419aa | 694 | u16 width_flags; /* max 10 bits */ |
3bc43840 GL |
695 | |
696 | struct list_head capture; | |
697 | ||
698 | spinlock_t lock; | |
283e4a82 | 699 | struct mutex mlock; |
61634976 | 700 | unsigned int buf_sequence; |
3bc43840 | 701 | |
3bc43840 | 702 | struct pxa_buffer *active; |
e623ebe6 | 703 | struct tasklet_struct task_eof; |
3f6ac497 RJ |
704 | |
705 | u32 save_cicr[5]; | |
3bc43840 GL |
706 | }; |
707 | ||
6a6c8786 GL |
708 | struct pxa_cam { |
709 | unsigned long flags; | |
710 | }; | |
711 | ||
3bc43840 GL |
712 | static const char *pxa_cam_driver_description = "PXA_Camera"; |
713 | ||
283e4a82 RJ |
714 | /* |
715 | * Format translation functions | |
716 | */ | |
8f05b34a | 717 | static const struct soc_camera_format_xlate |
34b27b13 | 718 | *pxa_mbus_xlate_by_fourcc(struct soc_camera_format_xlate *user_formats, |
8f05b34a | 719 | unsigned int fourcc) |
283e4a82 RJ |
720 | { |
721 | unsigned int i; | |
722 | ||
723 | for (i = 0; user_formats[i].code; i++) | |
724 | if (user_formats[i].host_fmt->fourcc == fourcc) | |
725 | return user_formats + i; | |
726 | return NULL; | |
727 | } | |
728 | ||
34b27b13 | 729 | static struct soc_camera_format_xlate *pxa_mbus_build_fmts_xlate( |
283e4a82 RJ |
730 | struct v4l2_device *v4l2_dev, struct v4l2_subdev *subdev, |
731 | int (*get_formats)(struct v4l2_device *, unsigned int, | |
732 | struct soc_camera_format_xlate *xlate)) | |
295ab497 | 733 | { |
283e4a82 RJ |
734 | unsigned int i, fmts = 0, raw_fmts = 0; |
735 | int ret; | |
736 | struct v4l2_subdev_mbus_code_enum code = { | |
737 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
738 | }; | |
739 | struct soc_camera_format_xlate *user_formats; | |
740 | ||
741 | while (!v4l2_subdev_call(subdev, pad, enum_mbus_code, NULL, &code)) { | |
742 | raw_fmts++; | |
743 | code.index++; | |
744 | } | |
745 | ||
746 | /* | |
747 | * First pass - only count formats this host-sensor | |
748 | * configuration can provide | |
749 | */ | |
750 | for (i = 0; i < raw_fmts; i++) { | |
751 | ret = get_formats(v4l2_dev, i, NULL); | |
752 | if (ret < 0) | |
753 | return ERR_PTR(ret); | |
754 | fmts += ret; | |
755 | } | |
756 | ||
757 | if (!fmts) | |
758 | return ERR_PTR(-ENXIO); | |
295ab497 | 759 | |
283e4a82 RJ |
760 | user_formats = kcalloc(fmts + 1, sizeof(*user_formats), GFP_KERNEL); |
761 | if (!user_formats) | |
762 | return ERR_PTR(-ENOMEM); | |
763 | ||
764 | /* Second pass - actually fill data formats */ | |
765 | fmts = 0; | |
766 | for (i = 0; i < raw_fmts; i++) { | |
767 | ret = get_formats(v4l2_dev, i, user_formats + fmts); | |
768 | if (ret < 0) | |
769 | goto egfmt; | |
770 | fmts += ret; | |
771 | } | |
772 | user_formats[fmts].code = 0; | |
773 | ||
774 | return user_formats; | |
775 | egfmt: | |
776 | kfree(user_formats); | |
777 | return ERR_PTR(ret); | |
295ab497 RJ |
778 | } |
779 | ||
3bc43840 GL |
780 | /* |
781 | * Videobuf operations | |
782 | */ | |
e009ebd5 | 783 | static struct pxa_buffer *vb2_to_pxa_buffer(struct vb2_buffer *vb) |
3bc43840 | 784 | { |
e009ebd5 | 785 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
3bc43840 | 786 | |
e009ebd5 | 787 | return container_of(vbuf, struct pxa_buffer, vbuf); |
3bc43840 GL |
788 | } |
789 | ||
e009ebd5 | 790 | static struct device *pcdev_to_dev(struct pxa_camera_dev *pcdev) |
3bc43840 | 791 | { |
283e4a82 RJ |
792 | return pcdev->v4l2_dev.dev; |
793 | } | |
794 | ||
795 | static struct pxa_camera_dev *v4l2_dev_to_pcdev(struct v4l2_device *v4l2_dev) | |
796 | { | |
797 | return container_of(v4l2_dev, struct pxa_camera_dev, v4l2_dev); | |
37f5aefd RJ |
798 | } |
799 | ||
1e77d55a | 800 | static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev, |
e5853918 RJ |
801 | enum pxa_camera_active_dma act_dma); |
802 | ||
1e77d55a | 803 | static void pxa_camera_dma_irq_y(void *data) |
e5853918 RJ |
804 | { |
805 | struct pxa_camera_dev *pcdev = data; | |
806 | ||
1e77d55a | 807 | pxa_camera_dma_irq(pcdev, DMA_Y); |
e5853918 RJ |
808 | } |
809 | ||
1e77d55a | 810 | static void pxa_camera_dma_irq_u(void *data) |
e5853918 RJ |
811 | { |
812 | struct pxa_camera_dev *pcdev = data; | |
813 | ||
1e77d55a | 814 | pxa_camera_dma_irq(pcdev, DMA_U); |
e5853918 RJ |
815 | } |
816 | ||
1e77d55a | 817 | static void pxa_camera_dma_irq_v(void *data) |
e5853918 RJ |
818 | { |
819 | struct pxa_camera_dev *pcdev = data; | |
820 | ||
1e77d55a | 821 | pxa_camera_dma_irq(pcdev, DMA_V); |
e5853918 RJ |
822 | } |
823 | ||
37f5aefd RJ |
824 | /** |
825 | * pxa_init_dma_channel - init dma descriptors | |
826 | * @pcdev: pxa camera device | |
e009ebd5 | 827 | * @vb: videobuffer2 buffer |
37f5aefd RJ |
828 | * @dma: dma video buffer |
829 | * @channel: dma channel (0 => 'Y', 1 => 'U', 2 => 'V') | |
830 | * @cibr: camera Receive Buffer Register | |
37f5aefd RJ |
831 | * |
832 | * Prepares the pxa dma descriptors to transfer one camera channel. | |
37f5aefd | 833 | * |
1e77d55a | 834 | * Returns 0 if success or -ENOMEM if no memory is available |
37f5aefd | 835 | */ |
a5462e5b | 836 | static int pxa_init_dma_channel(struct pxa_camera_dev *pcdev, |
e009ebd5 RJ |
837 | struct pxa_buffer *buf, int channel, |
838 | struct scatterlist *sg, int sglen) | |
a5462e5b | 839 | { |
1e77d55a | 840 | struct dma_chan *dma_chan = pcdev->dma_chans[channel]; |
1e77d55a RJ |
841 | struct dma_async_tx_descriptor *tx; |
842 | ||
843 | tx = dmaengine_prep_slave_sg(dma_chan, sg, sglen, DMA_DEV_TO_MEM, | |
844 | DMA_PREP_INTERRUPT | DMA_CTRL_REUSE); | |
845 | if (!tx) { | |
e009ebd5 | 846 | dev_err(pcdev_to_dev(pcdev), |
1e77d55a RJ |
847 | "dmaengine_prep_slave_sg failed\n"); |
848 | goto fail; | |
a5462e5b MR |
849 | } |
850 | ||
1e77d55a RJ |
851 | tx->callback_param = pcdev; |
852 | switch (channel) { | |
853 | case 0: | |
854 | tx->callback = pxa_camera_dma_irq_y; | |
855 | break; | |
856 | case 1: | |
857 | tx->callback = pxa_camera_dma_irq_u; | |
858 | break; | |
859 | case 2: | |
860 | tx->callback = pxa_camera_dma_irq_v; | |
861 | break; | |
37f5aefd RJ |
862 | } |
863 | ||
1e77d55a | 864 | buf->descs[channel] = tx; |
a5462e5b | 865 | return 0; |
1e77d55a | 866 | fail: |
e009ebd5 RJ |
867 | dev_dbg(pcdev_to_dev(pcdev), |
868 | "%s (vb=%p) dma_tx=%p\n", | |
869 | __func__, buf, tx); | |
1e77d55a RJ |
870 | |
871 | return -ENOMEM; | |
a5462e5b MR |
872 | } |
873 | ||
256b0233 RJ |
874 | static void pxa_videobuf_set_actdma(struct pxa_camera_dev *pcdev, |
875 | struct pxa_buffer *buf) | |
876 | { | |
877 | buf->active_dma = DMA_Y; | |
283e4a82 | 878 | if (buf->nb_planes == 3) |
256b0233 RJ |
879 | buf->active_dma |= DMA_U | DMA_V; |
880 | } | |
881 | ||
256b0233 RJ |
882 | /** |
883 | * pxa_dma_start_channels - start DMA channel for active buffer | |
884 | * @pcdev: pxa camera device | |
885 | * | |
886 | * Initialize DMA channels to the beginning of the active video buffer, and | |
887 | * start these channels. | |
888 | */ | |
889 | static void pxa_dma_start_channels(struct pxa_camera_dev *pcdev) | |
890 | { | |
891 | int i; | |
256b0233 RJ |
892 | |
893 | for (i = 0; i < pcdev->channels; i++) { | |
e009ebd5 | 894 | dev_dbg(pcdev_to_dev(pcdev), |
1e77d55a RJ |
895 | "%s (channel=%d)\n", __func__, i); |
896 | dma_async_issue_pending(pcdev->dma_chans[i]); | |
256b0233 RJ |
897 | } |
898 | } | |
899 | ||
900 | static void pxa_dma_stop_channels(struct pxa_camera_dev *pcdev) | |
901 | { | |
902 | int i; | |
903 | ||
904 | for (i = 0; i < pcdev->channels; i++) { | |
e009ebd5 | 905 | dev_dbg(pcdev_to_dev(pcdev), |
0166b743 | 906 | "%s (channel=%d)\n", __func__, i); |
1e77d55a | 907 | dmaengine_terminate_all(pcdev->dma_chans[i]); |
256b0233 RJ |
908 | } |
909 | } | |
910 | ||
256b0233 RJ |
911 | static void pxa_dma_add_tail_buf(struct pxa_camera_dev *pcdev, |
912 | struct pxa_buffer *buf) | |
913 | { | |
914 | int i; | |
256b0233 RJ |
915 | |
916 | for (i = 0; i < pcdev->channels; i++) { | |
1e77d55a | 917 | buf->cookie[i] = dmaengine_submit(buf->descs[i]); |
e009ebd5 | 918 | dev_dbg(pcdev_to_dev(pcdev), |
1e77d55a RJ |
919 | "%s (channel=%d) : submit vb=%p cookie=%d\n", |
920 | __func__, i, buf, buf->descs[i]->cookie); | |
ae7410e7 | 921 | } |
256b0233 RJ |
922 | } |
923 | ||
924 | /** | |
925 | * pxa_camera_start_capture - start video capturing | |
926 | * @pcdev: camera device | |
927 | * | |
928 | * Launch capturing. DMA channels should not be active yet. They should get | |
929 | * activated at the end of frame interrupt, to capture only whole frames, and | |
930 | * never begin the capture of a partial frame. | |
931 | */ | |
932 | static void pxa_camera_start_capture(struct pxa_camera_dev *pcdev) | |
933 | { | |
a47f6be4 | 934 | unsigned long cicr0; |
256b0233 | 935 | |
e009ebd5 | 936 | dev_dbg(pcdev_to_dev(pcdev), "%s\n", __func__); |
e623ebe6 | 937 | __raw_writel(__raw_readl(pcdev->base + CISR), pcdev->base + CISR); |
256b0233 RJ |
938 | /* Enable End-Of-Frame Interrupt */ |
939 | cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_ENB; | |
940 | cicr0 &= ~CICR0_EOFM; | |
941 | __raw_writel(cicr0, pcdev->base + CICR0); | |
942 | } | |
943 | ||
944 | static void pxa_camera_stop_capture(struct pxa_camera_dev *pcdev) | |
945 | { | |
946 | unsigned long cicr0; | |
947 | ||
948 | pxa_dma_stop_channels(pcdev); | |
949 | ||
950 | cicr0 = __raw_readl(pcdev->base + CICR0) & ~CICR0_ENB; | |
951 | __raw_writel(cicr0, pcdev->base + CICR0); | |
952 | ||
8c62e221 | 953 | pcdev->active = NULL; |
e009ebd5 | 954 | dev_dbg(pcdev_to_dev(pcdev), "%s\n", __func__); |
3bc43840 GL |
955 | } |
956 | ||
a5462e5b | 957 | static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev, |
fcdf9bbc RJ |
958 | struct pxa_buffer *buf, |
959 | enum vb2_buffer_state state) | |
a5462e5b | 960 | { |
e009ebd5 | 961 | struct vb2_buffer *vb = &buf->vbuf.vb2_buf; |
61634976 | 962 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
e009ebd5 | 963 | |
a5462e5b | 964 | /* _init is used to debug races, see comment in pxa_camera_reqbufs() */ |
e009ebd5 RJ |
965 | list_del_init(&buf->queue); |
966 | vb->timestamp = ktime_get_ns(); | |
61634976 RJ |
967 | vbuf->sequence = pcdev->buf_sequence++; |
968 | vbuf->field = V4L2_FIELD_NONE; | |
e009ebd5 RJ |
969 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); |
970 | dev_dbg(pcdev_to_dev(pcdev), "%s dequeud buffer (buf=0x%p)\n", | |
971 | __func__, buf); | |
a5462e5b MR |
972 | |
973 | if (list_empty(&pcdev->capture)) { | |
256b0233 | 974 | pxa_camera_stop_capture(pcdev); |
a5462e5b MR |
975 | return; |
976 | } | |
977 | ||
978 | pcdev->active = list_entry(pcdev->capture.next, | |
e009ebd5 | 979 | struct pxa_buffer, queue); |
a5462e5b MR |
980 | } |
981 | ||
256b0233 RJ |
982 | /** |
983 | * pxa_camera_check_link_miss - check missed DMA linking | |
984 | * @pcdev: camera device | |
985 | * | |
986 | * The DMA chaining is done with DMA running. This means a tiny temporal window | |
987 | * remains, where a buffer is queued on the chain, while the chain is already | |
25985edc | 988 | * stopped. This means the tailed buffer would never be transferred by DMA. |
256b0233 RJ |
989 | * This function restarts the capture for this corner case, where : |
990 | * - DADR() == DADDR_STOP | |
991 | * - a videobuffer is queued on the pcdev->capture list | |
992 | * | |
993 | * Please check the "DMA hot chaining timeslice issue" in | |
994 | * Documentation/video4linux/pxa_camera.txt | |
995 | * | |
996 | * Context: should only be called within the dma irq handler | |
997 | */ | |
1e77d55a RJ |
998 | static void pxa_camera_check_link_miss(struct pxa_camera_dev *pcdev, |
999 | dma_cookie_t last_submitted, | |
1000 | dma_cookie_t last_issued) | |
256b0233 | 1001 | { |
1e77d55a | 1002 | bool is_dma_stopped = last_submitted != last_issued; |
256b0233 | 1003 | |
e009ebd5 | 1004 | dev_dbg(pcdev_to_dev(pcdev), |
1e77d55a | 1005 | "%s : top queued buffer=%p, is_dma_stopped=%d\n", |
256b0233 | 1006 | __func__, pcdev->active, is_dma_stopped); |
1e77d55a | 1007 | |
256b0233 RJ |
1008 | if (pcdev->active && is_dma_stopped) |
1009 | pxa_camera_start_capture(pcdev); | |
1010 | } | |
1011 | ||
1e77d55a | 1012 | static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev, |
a5462e5b | 1013 | enum pxa_camera_active_dma act_dma) |
3bc43840 | 1014 | { |
1e77d55a | 1015 | struct pxa_buffer *buf, *last_buf; |
3bc43840 | 1016 | unsigned long flags; |
1e77d55a RJ |
1017 | u32 camera_status, overrun; |
1018 | int chan; | |
1e77d55a RJ |
1019 | enum dma_status last_status; |
1020 | dma_cookie_t last_issued; | |
3bc43840 GL |
1021 | |
1022 | spin_lock_irqsave(&pcdev->lock, flags); | |
1023 | ||
256b0233 | 1024 | camera_status = __raw_readl(pcdev->base + CISR); |
295ab497 | 1025 | dev_dbg(pcdev_to_dev(pcdev), "camera dma irq, cisr=0x%x dma=%d\n", |
1e77d55a | 1026 | camera_status, act_dma); |
256b0233 RJ |
1027 | overrun = CISR_IFO_0; |
1028 | if (pcdev->channels == 3) | |
1029 | overrun |= CISR_IFO_1 | CISR_IFO_2; | |
7102b773 | 1030 | |
8c62e221 RJ |
1031 | /* |
1032 | * pcdev->active should not be NULL in DMA irq handler. | |
1033 | * | |
1034 | * But there is one corner case : if capture was stopped due to an | |
1035 | * overrun of channel 1, and at that same channel 2 was completed. | |
1036 | * | |
1037 | * When handling the overrun in DMA irq for channel 1, we'll stop the | |
1038 | * capture and restart it (and thus set pcdev->active to NULL). But the | |
1039 | * DMA irq handler will already be pending for channel 2. So on entering | |
1040 | * the DMA irq handler for channel 2 there will be no active buffer, yet | |
1041 | * that is normal. | |
1042 | */ | |
1043 | if (!pcdev->active) | |
3bc43840 | 1044 | goto out; |
3bc43840 | 1045 | |
e009ebd5 RJ |
1046 | buf = pcdev->active; |
1047 | WARN_ON(buf->inwork || list_empty(&buf->queue)); | |
3bc43840 | 1048 | |
1e77d55a RJ |
1049 | /* |
1050 | * It's normal if the last frame creates an overrun, as there | |
1051 | * are no more DMA descriptors to fetch from QCI fifos | |
1052 | */ | |
1053 | switch (act_dma) { | |
1054 | case DMA_U: | |
1055 | chan = 1; | |
1056 | break; | |
1057 | case DMA_V: | |
1058 | chan = 2; | |
1059 | break; | |
1060 | default: | |
1061 | chan = 0; | |
1062 | break; | |
1063 | } | |
1064 | last_buf = list_entry(pcdev->capture.prev, | |
e009ebd5 | 1065 | struct pxa_buffer, queue); |
1e77d55a RJ |
1066 | last_status = dma_async_is_tx_complete(pcdev->dma_chans[chan], |
1067 | last_buf->cookie[chan], | |
1068 | NULL, &last_issued); | |
1069 | if (camera_status & overrun && | |
1070 | last_status != DMA_COMPLETE) { | |
295ab497 | 1071 | dev_dbg(pcdev_to_dev(pcdev), "FIFO overrun! CISR: %x\n", |
1e77d55a RJ |
1072 | camera_status); |
1073 | pxa_camera_stop_capture(pcdev); | |
e009ebd5 | 1074 | list_for_each_entry(buf, &pcdev->capture, queue) |
1e77d55a RJ |
1075 | pxa_dma_add_tail_buf(pcdev, buf); |
1076 | pxa_camera_start_capture(pcdev); | |
1077 | goto out; | |
1078 | } | |
1079 | buf->active_dma &= ~act_dma; | |
1080 | if (!buf->active_dma) { | |
fcdf9bbc | 1081 | pxa_camera_wakeup(pcdev, buf, VB2_BUF_STATE_DONE); |
1e77d55a RJ |
1082 | pxa_camera_check_link_miss(pcdev, last_buf->cookie[chan], |
1083 | last_issued); | |
256b0233 | 1084 | } |
3bc43840 GL |
1085 | |
1086 | out: | |
1087 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
1088 | } | |
1089 | ||
40e2e092 GL |
1090 | static u32 mclk_get_divisor(struct platform_device *pdev, |
1091 | struct pxa_camera_dev *pcdev) | |
3bc43840 | 1092 | { |
cf34cba7 GL |
1093 | unsigned long mclk = pcdev->mclk; |
1094 | u32 div; | |
3bc43840 GL |
1095 | unsigned long lcdclk; |
1096 | ||
cf34cba7 GL |
1097 | lcdclk = clk_get_rate(pcdev->clk); |
1098 | pcdev->ciclk = lcdclk; | |
3bc43840 | 1099 | |
cf34cba7 GL |
1100 | /* mclk <= ciclk / 4 (27.4.2) */ |
1101 | if (mclk > lcdclk / 4) { | |
1102 | mclk = lcdclk / 4; | |
295ab497 RJ |
1103 | dev_warn(pcdev_to_dev(pcdev), |
1104 | "Limiting master clock to %lu\n", mclk); | |
cf34cba7 GL |
1105 | } |
1106 | ||
1107 | /* We verify mclk != 0, so if anyone breaks it, here comes their Oops */ | |
1108 | div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1; | |
3bc43840 | 1109 | |
cf34cba7 GL |
1110 | /* If we're not supplying MCLK, leave it at 0 */ |
1111 | if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN) | |
1112 | pcdev->mclk = lcdclk / (2 * (div + 1)); | |
3bc43840 | 1113 | |
295ab497 | 1114 | dev_dbg(pcdev_to_dev(pcdev), "LCD clock %luHz, target freq %luHz, divisor %u\n", |
40e2e092 | 1115 | lcdclk, mclk, div); |
3bc43840 GL |
1116 | |
1117 | return div; | |
1118 | } | |
1119 | ||
cf34cba7 GL |
1120 | static void recalculate_fifo_timeout(struct pxa_camera_dev *pcdev, |
1121 | unsigned long pclk) | |
1122 | { | |
1123 | /* We want a timeout > 1 pixel time, not ">=" */ | |
1124 | u32 ciclk_per_pixel = pcdev->ciclk / pclk + 1; | |
1125 | ||
1126 | __raw_writel(ciclk_per_pixel, pcdev->base + CITOR); | |
1127 | } | |
1128 | ||
7102b773 | 1129 | static void pxa_camera_activate(struct pxa_camera_dev *pcdev) |
3bc43840 | 1130 | { |
3bc43840 GL |
1131 | u32 cicr4 = 0; |
1132 | ||
5ca11fa3 EM |
1133 | /* disable all interrupts */ |
1134 | __raw_writel(0x3ff, pcdev->base + CICR0); | |
3bc43840 GL |
1135 | |
1136 | if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN) | |
1137 | cicr4 |= CICR4_PCLK_EN; | |
1138 | if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN) | |
1139 | cicr4 |= CICR4_MCLK_EN; | |
1140 | if (pcdev->platform_flags & PXA_CAMERA_PCP) | |
1141 | cicr4 |= CICR4_PCP; | |
1142 | if (pcdev->platform_flags & PXA_CAMERA_HSP) | |
1143 | cicr4 |= CICR4_HSP; | |
1144 | if (pcdev->platform_flags & PXA_CAMERA_VSP) | |
1145 | cicr4 |= CICR4_VSP; | |
1146 | ||
cf34cba7 GL |
1147 | __raw_writel(pcdev->mclk_divisor | cicr4, pcdev->base + CICR4); |
1148 | ||
1149 | if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN) | |
1150 | /* Initialise the timeout under the assumption pclk = mclk */ | |
1151 | recalculate_fifo_timeout(pcdev, pcdev->mclk); | |
1152 | else | |
1153 | /* "Safe default" - 13MHz */ | |
1154 | recalculate_fifo_timeout(pcdev, 13000000); | |
3bc43840 | 1155 | |
91acd962 | 1156 | clk_prepare_enable(pcdev->clk); |
3bc43840 GL |
1157 | } |
1158 | ||
7102b773 | 1159 | static void pxa_camera_deactivate(struct pxa_camera_dev *pcdev) |
3bc43840 | 1160 | { |
91acd962 | 1161 | clk_disable_unprepare(pcdev->clk); |
3bc43840 GL |
1162 | } |
1163 | ||
e623ebe6 | 1164 | static void pxa_camera_eof(unsigned long arg) |
3bc43840 | 1165 | { |
e623ebe6 RJ |
1166 | struct pxa_camera_dev *pcdev = (struct pxa_camera_dev *)arg; |
1167 | unsigned long cifr; | |
256b0233 | 1168 | struct pxa_buffer *buf; |
3bc43840 | 1169 | |
e009ebd5 | 1170 | dev_dbg(pcdev_to_dev(pcdev), |
e623ebe6 RJ |
1171 | "Camera interrupt status 0x%x\n", |
1172 | __raw_readl(pcdev->base + CISR)); | |
1173 | ||
1174 | /* Reset the FIFOs */ | |
1175 | cifr = __raw_readl(pcdev->base + CIFR) | CIFR_RESET_F; | |
1176 | __raw_writel(cifr, pcdev->base + CIFR); | |
1177 | ||
1178 | pcdev->active = list_first_entry(&pcdev->capture, | |
e009ebd5 RJ |
1179 | struct pxa_buffer, queue); |
1180 | buf = pcdev->active; | |
e623ebe6 RJ |
1181 | pxa_videobuf_set_actdma(pcdev, buf); |
1182 | ||
1183 | pxa_dma_start_channels(pcdev); | |
1184 | } | |
1185 | ||
1186 | static irqreturn_t pxa_camera_irq(int irq, void *data) | |
1187 | { | |
1188 | struct pxa_camera_dev *pcdev = data; | |
1189 | unsigned long status, cicr0; | |
1190 | ||
5ca11fa3 | 1191 | status = __raw_readl(pcdev->base + CISR); |
e009ebd5 | 1192 | dev_dbg(pcdev_to_dev(pcdev), |
0166b743 | 1193 | "Camera interrupt status 0x%lx\n", status); |
3bc43840 | 1194 | |
e7c50688 GL |
1195 | if (!status) |
1196 | return IRQ_NONE; | |
1197 | ||
5ca11fa3 | 1198 | __raw_writel(status, pcdev->base + CISR); |
e7c50688 GL |
1199 | |
1200 | if (status & CISR_EOF) { | |
5ca11fa3 EM |
1201 | cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_EOFM; |
1202 | __raw_writel(cicr0, pcdev->base + CICR0); | |
e623ebe6 | 1203 | tasklet_schedule(&pcdev->task_eof); |
e7c50688 GL |
1204 | } |
1205 | ||
3bc43840 GL |
1206 | return IRQ_HANDLED; |
1207 | } | |
1208 | ||
ad5f2e85 GL |
1209 | static int test_platform_param(struct pxa_camera_dev *pcdev, |
1210 | unsigned char buswidth, unsigned long *flags) | |
3bc43840 | 1211 | { |
ad5f2e85 GL |
1212 | /* |
1213 | * Platform specified synchronization and pixel clock polarities are | |
1214 | * only a recommendation and are only used during probing. The PXA270 | |
1215 | * quick capture interface supports both. | |
1216 | */ | |
1217 | *flags = (pcdev->platform_flags & PXA_CAMERA_MASTER ? | |
679419aa GL |
1218 | V4L2_MBUS_MASTER : V4L2_MBUS_SLAVE) | |
1219 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | | |
1220 | V4L2_MBUS_HSYNC_ACTIVE_LOW | | |
1221 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | | |
1222 | V4L2_MBUS_VSYNC_ACTIVE_LOW | | |
1223 | V4L2_MBUS_DATA_ACTIVE_HIGH | | |
1224 | V4L2_MBUS_PCLK_SAMPLE_RISING | | |
1225 | V4L2_MBUS_PCLK_SAMPLE_FALLING; | |
3bc43840 GL |
1226 | |
1227 | /* If requested data width is supported by the platform, use it */ | |
679419aa GL |
1228 | if ((1 << (buswidth - 1)) & pcdev->width_flags) |
1229 | return 0; | |
ad5f2e85 | 1230 | |
679419aa | 1231 | return -EINVAL; |
ad5f2e85 GL |
1232 | } |
1233 | ||
283e4a82 | 1234 | static void pxa_camera_setup_cicr(struct pxa_camera_dev *pcdev, |
6a6c8786 | 1235 | unsigned long flags, __u32 pixfmt) |
ad5f2e85 | 1236 | { |
6a6c8786 | 1237 | unsigned long dw, bpp; |
32536108 | 1238 | u32 cicr0, cicr1, cicr2, cicr3, cicr4 = 0, y_skip_top; |
b36bcbd6 | 1239 | int ret = sensor_call(pcdev, sensor, g_skip_top_lines, &y_skip_top); |
32536108 GL |
1240 | |
1241 | if (ret < 0) | |
1242 | y_skip_top = 0; | |
3bc43840 | 1243 | |
5d28d525 GL |
1244 | /* |
1245 | * Datawidth is now guaranteed to be equal to one of the three values. | |
1246 | * We fix bit-per-pixel equal to data-width... | |
1247 | */ | |
283e4a82 | 1248 | switch (pcdev->current_fmt->host_fmt->bits_per_sample) { |
679419aa | 1249 | case 10: |
3bc43840 GL |
1250 | dw = 4; |
1251 | bpp = 0x40; | |
1252 | break; | |
679419aa | 1253 | case 9: |
3bc43840 GL |
1254 | dw = 3; |
1255 | bpp = 0x20; | |
1256 | break; | |
1257 | default: | |
5d28d525 GL |
1258 | /* |
1259 | * Actually it can only be 8 now, | |
1260 | * default is just to silence compiler warnings | |
1261 | */ | |
679419aa | 1262 | case 8: |
3bc43840 GL |
1263 | dw = 2; |
1264 | bpp = 0; | |
1265 | } | |
1266 | ||
1267 | if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN) | |
1268 | cicr4 |= CICR4_PCLK_EN; | |
1269 | if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN) | |
1270 | cicr4 |= CICR4_MCLK_EN; | |
679419aa | 1271 | if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) |
3bc43840 | 1272 | cicr4 |= CICR4_PCP; |
679419aa | 1273 | if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) |
3bc43840 | 1274 | cicr4 |= CICR4_HSP; |
679419aa | 1275 | if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) |
3bc43840 GL |
1276 | cicr4 |= CICR4_VSP; |
1277 | ||
5ca11fa3 | 1278 | cicr0 = __raw_readl(pcdev->base + CICR0); |
3bc43840 | 1279 | if (cicr0 & CICR0_ENB) |
5ca11fa3 | 1280 | __raw_writel(cicr0 & ~CICR0_ENB, pcdev->base + CICR0); |
a5462e5b | 1281 | |
283e4a82 | 1282 | cicr1 = CICR1_PPL_VAL(pcdev->current_pix.width - 1) | bpp | dw; |
a5462e5b MR |
1283 | |
1284 | switch (pixfmt) { | |
1285 | case V4L2_PIX_FMT_YUV422P: | |
e7c50688 | 1286 | pcdev->channels = 3; |
a5462e5b | 1287 | cicr1 |= CICR1_YCBCR_F; |
2a48fc73 RJ |
1288 | /* |
1289 | * Normally, pxa bus wants as input UYVY format. We allow all | |
1290 | * reorderings of the YUV422 format, as no processing is done, | |
1291 | * and the YUV stream is just passed through without any | |
1292 | * transformation. Note that UYVY is the only format that | |
1293 | * should be used if pxa framebuffer Overlay2 is used. | |
1294 | */ | |
1295 | case V4L2_PIX_FMT_UYVY: | |
1296 | case V4L2_PIX_FMT_VYUY: | |
a5462e5b | 1297 | case V4L2_PIX_FMT_YUYV: |
2a48fc73 | 1298 | case V4L2_PIX_FMT_YVYU: |
a5462e5b MR |
1299 | cicr1 |= CICR1_COLOR_SP_VAL(2); |
1300 | break; | |
1301 | case V4L2_PIX_FMT_RGB555: | |
1302 | cicr1 |= CICR1_RGB_BPP_VAL(1) | CICR1_RGBT_CONV_VAL(2) | | |
1303 | CICR1_TBIT | CICR1_COLOR_SP_VAL(1); | |
1304 | break; | |
1305 | case V4L2_PIX_FMT_RGB565: | |
1306 | cicr1 |= CICR1_COLOR_SP_VAL(1) | CICR1_RGB_BPP_VAL(2); | |
1307 | break; | |
1308 | } | |
1309 | ||
5ca11fa3 | 1310 | cicr2 = 0; |
283e4a82 | 1311 | cicr3 = CICR3_LPF_VAL(pcdev->current_pix.height - 1) | |
32536108 | 1312 | CICR3_BFW_VAL(min((u32)255, y_skip_top)); |
cf34cba7 | 1313 | cicr4 |= pcdev->mclk_divisor; |
5ca11fa3 EM |
1314 | |
1315 | __raw_writel(cicr1, pcdev->base + CICR1); | |
1316 | __raw_writel(cicr2, pcdev->base + CICR2); | |
1317 | __raw_writel(cicr3, pcdev->base + CICR3); | |
1318 | __raw_writel(cicr4, pcdev->base + CICR4); | |
3bc43840 GL |
1319 | |
1320 | /* CIF interrupts are not used, only DMA */ | |
5ca11fa3 EM |
1321 | cicr0 = (cicr0 & CICR0_ENB) | (pcdev->platform_flags & PXA_CAMERA_MASTER ? |
1322 | CICR0_SIM_MP : (CICR0_SL_CAP_EN | CICR0_SIM_SP)); | |
1323 | cicr0 |= CICR0_DMAEN | CICR0_IRQ_MASK; | |
1324 | __raw_writel(cicr0, pcdev->base + CICR0); | |
6a6c8786 GL |
1325 | } |
1326 | ||
6f28435d RJ |
1327 | /* |
1328 | * Videobuf2 section | |
1329 | */ | |
1330 | static void pxa_buffer_cleanup(struct pxa_buffer *buf) | |
1331 | { | |
1332 | int i; | |
1333 | ||
1334 | for (i = 0; i < 3 && buf->descs[i]; i++) { | |
1335 | dmaengine_desc_free(buf->descs[i]); | |
1336 | kfree(buf->sg[i]); | |
1337 | buf->descs[i] = NULL; | |
1338 | buf->sg[i] = NULL; | |
1339 | buf->sg_len[i] = 0; | |
1340 | buf->plane_sizes[i] = 0; | |
1341 | } | |
1342 | buf->nb_planes = 0; | |
1343 | } | |
1344 | ||
1345 | static int pxa_buffer_init(struct pxa_camera_dev *pcdev, | |
1346 | struct pxa_buffer *buf) | |
1347 | { | |
1348 | struct vb2_buffer *vb = &buf->vbuf.vb2_buf; | |
1349 | struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0); | |
1350 | int nb_channels = pcdev->channels; | |
1351 | int i, ret = 0; | |
1352 | unsigned long size = vb2_plane_size(vb, 0); | |
1353 | ||
1354 | switch (nb_channels) { | |
1355 | case 1: | |
1356 | buf->plane_sizes[0] = size; | |
1357 | break; | |
1358 | case 3: | |
1359 | buf->plane_sizes[0] = size / 2; | |
1360 | buf->plane_sizes[1] = size / 4; | |
1361 | buf->plane_sizes[2] = size / 4; | |
1362 | break; | |
1363 | default: | |
1364 | return -EINVAL; | |
1365 | }; | |
1366 | buf->nb_planes = nb_channels; | |
1367 | ||
1368 | ret = sg_split(sgt->sgl, sgt->nents, 0, nb_channels, | |
1369 | buf->plane_sizes, buf->sg, buf->sg_len, GFP_KERNEL); | |
1370 | if (ret < 0) { | |
1371 | dev_err(pcdev_to_dev(pcdev), | |
1372 | "sg_split failed: %d\n", ret); | |
1373 | return ret; | |
1374 | } | |
1375 | for (i = 0; i < nb_channels; i++) { | |
1376 | ret = pxa_init_dma_channel(pcdev, buf, i, | |
1377 | buf->sg[i], buf->sg_len[i]); | |
1378 | if (ret) { | |
1379 | pxa_buffer_cleanup(buf); | |
1380 | return ret; | |
1381 | } | |
1382 | } | |
1383 | INIT_LIST_HEAD(&buf->queue); | |
1384 | ||
1385 | return ret; | |
1386 | } | |
1387 | ||
1388 | static void pxac_vb2_cleanup(struct vb2_buffer *vb) | |
1389 | { | |
1390 | struct pxa_buffer *buf = vb2_to_pxa_buffer(vb); | |
1391 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue); | |
1392 | ||
1393 | dev_dbg(pcdev_to_dev(pcdev), | |
1394 | "%s(vb=%p)\n", __func__, vb); | |
1395 | pxa_buffer_cleanup(buf); | |
1396 | } | |
1397 | ||
1398 | static void pxac_vb2_queue(struct vb2_buffer *vb) | |
1399 | { | |
1400 | struct pxa_buffer *buf = vb2_to_pxa_buffer(vb); | |
1401 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue); | |
1402 | ||
1403 | dev_dbg(pcdev_to_dev(pcdev), | |
1404 | "%s(vb=%p) nb_channels=%d size=%lu active=%p\n", | |
1405 | __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0), | |
1406 | pcdev->active); | |
1407 | ||
1408 | list_add_tail(&buf->queue, &pcdev->capture); | |
1409 | ||
1410 | pxa_dma_add_tail_buf(pcdev, buf); | |
1411 | } | |
1412 | ||
1413 | /* | |
1414 | * Please check the DMA prepared buffer structure in : | |
1415 | * Documentation/video4linux/pxa_camera.txt | |
1416 | * Please check also in pxa_camera_check_link_miss() to understand why DMA chain | |
1417 | * modification while DMA chain is running will work anyway. | |
1418 | */ | |
1419 | static int pxac_vb2_prepare(struct vb2_buffer *vb) | |
1420 | { | |
1421 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue); | |
1422 | struct pxa_buffer *buf = vb2_to_pxa_buffer(vb); | |
6f28435d RJ |
1423 | int ret = 0; |
1424 | ||
1425 | switch (pcdev->channels) { | |
1426 | case 1: | |
1427 | case 3: | |
283e4a82 | 1428 | vb2_set_plane_payload(vb, 0, pcdev->current_pix.sizeimage); |
6f28435d RJ |
1429 | break; |
1430 | default: | |
1431 | return -EINVAL; | |
1432 | } | |
1433 | ||
1434 | dev_dbg(pcdev_to_dev(pcdev), | |
1435 | "%s (vb=%p) nb_channels=%d size=%lu\n", | |
1436 | __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0)); | |
1437 | ||
283e4a82 | 1438 | WARN_ON(!pcdev->current_fmt); |
6f28435d RJ |
1439 | |
1440 | #ifdef DEBUG | |
1441 | /* | |
1442 | * This can be useful if you want to see if we actually fill | |
1443 | * the buffer with something | |
1444 | */ | |
1445 | for (i = 0; i < vb->num_planes; i++) | |
1446 | memset((void *)vb2_plane_vaddr(vb, i), | |
1447 | 0xaa, vb2_get_plane_payload(vb, i)); | |
1448 | #endif | |
1449 | ||
1450 | /* | |
1451 | * I think, in buf_prepare you only have to protect global data, | |
1452 | * the actual buffer is yours | |
1453 | */ | |
1454 | buf->inwork = 0; | |
1455 | pxa_videobuf_set_actdma(pcdev, buf); | |
1456 | ||
1457 | return ret; | |
1458 | } | |
1459 | ||
1460 | static int pxac_vb2_init(struct vb2_buffer *vb) | |
1461 | { | |
1462 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue); | |
1463 | struct pxa_buffer *buf = vb2_to_pxa_buffer(vb); | |
1464 | ||
1465 | dev_dbg(pcdev_to_dev(pcdev), | |
1466 | "%s(nb_channels=%d)\n", | |
1467 | __func__, pcdev->channels); | |
1468 | ||
1469 | return pxa_buffer_init(pcdev, buf); | |
1470 | } | |
1471 | ||
1472 | static int pxac_vb2_queue_setup(struct vb2_queue *vq, | |
1473 | unsigned int *nbufs, | |
1474 | unsigned int *num_planes, unsigned int sizes[], | |
1475 | struct device *alloc_devs[]) | |
1476 | { | |
1477 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq); | |
283e4a82 | 1478 | int size = pcdev->current_pix.sizeimage; |
6f28435d RJ |
1479 | |
1480 | dev_dbg(pcdev_to_dev(pcdev), | |
1481 | "%s(vq=%p nbufs=%d num_planes=%d size=%d)\n", | |
1482 | __func__, vq, *nbufs, *num_planes, size); | |
1483 | /* | |
1484 | * Called from VIDIOC_REQBUFS or in compatibility mode For YUV422P | |
1485 | * format, even if there are 3 planes Y, U and V, we reply there is only | |
1486 | * one plane, containing Y, U and V data, one after the other. | |
1487 | */ | |
1488 | if (*num_planes) | |
1489 | return sizes[0] < size ? -EINVAL : 0; | |
1490 | ||
1491 | *num_planes = 1; | |
1492 | switch (pcdev->channels) { | |
1493 | case 1: | |
1494 | case 3: | |
1495 | sizes[0] = size; | |
1496 | break; | |
1497 | default: | |
1498 | return -EINVAL; | |
1499 | } | |
1500 | ||
1501 | if (!*nbufs) | |
1502 | *nbufs = 1; | |
1503 | ||
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count) | |
1508 | { | |
1509 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq); | |
1510 | ||
1511 | dev_dbg(pcdev_to_dev(pcdev), "%s(count=%d) active=%p\n", | |
1512 | __func__, count, pcdev->active); | |
1513 | ||
61634976 | 1514 | pcdev->buf_sequence = 0; |
6f28435d RJ |
1515 | if (!pcdev->active) |
1516 | pxa_camera_start_capture(pcdev); | |
1517 | ||
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | static void pxac_vb2_stop_streaming(struct vb2_queue *vq) | |
1522 | { | |
fcdf9bbc RJ |
1523 | struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq); |
1524 | struct pxa_buffer *buf, *tmp; | |
1525 | ||
1526 | dev_dbg(pcdev_to_dev(pcdev), "%s active=%p\n", | |
1527 | __func__, pcdev->active); | |
1528 | pxa_camera_stop_capture(pcdev); | |
1529 | ||
1530 | list_for_each_entry_safe(buf, tmp, &pcdev->capture, queue) | |
1531 | pxa_camera_wakeup(pcdev, buf, VB2_BUF_STATE_ERROR); | |
6f28435d RJ |
1532 | } |
1533 | ||
1534 | static struct vb2_ops pxac_vb2_ops = { | |
1535 | .queue_setup = pxac_vb2_queue_setup, | |
1536 | .buf_init = pxac_vb2_init, | |
1537 | .buf_prepare = pxac_vb2_prepare, | |
1538 | .buf_queue = pxac_vb2_queue, | |
1539 | .buf_cleanup = pxac_vb2_cleanup, | |
1540 | .start_streaming = pxac_vb2_start_streaming, | |
1541 | .stop_streaming = pxac_vb2_stop_streaming, | |
1542 | .wait_prepare = vb2_ops_wait_prepare, | |
1543 | .wait_finish = vb2_ops_wait_finish, | |
1544 | }; | |
1545 | ||
283e4a82 | 1546 | static int pxa_camera_init_videobuf2(struct pxa_camera_dev *pcdev) |
6f28435d | 1547 | { |
6f28435d | 1548 | int ret; |
283e4a82 | 1549 | struct vb2_queue *vq = &pcdev->vb2_vq; |
6f28435d | 1550 | |
283e4a82 | 1551 | memset(vq, 0, sizeof(*vq)); |
6f28435d RJ |
1552 | vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1553 | vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; | |
1554 | vq->drv_priv = pcdev; | |
1555 | vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; | |
1556 | vq->buf_struct_size = sizeof(struct pxa_buffer); | |
283e4a82 | 1557 | vq->dev = pcdev->v4l2_dev.dev; |
6f28435d RJ |
1558 | |
1559 | vq->ops = &pxac_vb2_ops; | |
1560 | vq->mem_ops = &vb2_dma_sg_memops; | |
283e4a82 | 1561 | vq->lock = &pcdev->mlock; |
6f28435d RJ |
1562 | |
1563 | ret = vb2_queue_init(vq); | |
1564 | dev_dbg(pcdev_to_dev(pcdev), | |
1565 | "vb2_queue_init(vq=%p): %d\n", vq, ret); | |
1566 | ||
1567 | return ret; | |
1568 | } | |
1569 | ||
1570 | /* | |
1571 | * Video ioctls section | |
1572 | */ | |
283e4a82 | 1573 | static int pxa_camera_set_bus_param(struct pxa_camera_dev *pcdev) |
6a6c8786 | 1574 | { |
679419aa | 1575 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
283e4a82 | 1576 | u32 pixfmt = pcdev->current_fmt->host_fmt->fourcc; |
679419aa | 1577 | unsigned long bus_flags, common_flags; |
760697be | 1578 | int ret; |
6a6c8786 | 1579 | |
283e4a82 RJ |
1580 | ret = test_platform_param(pcdev, |
1581 | pcdev->current_fmt->host_fmt->bits_per_sample, | |
d2dcad49 | 1582 | &bus_flags); |
6a6c8786 GL |
1583 | if (ret < 0) |
1584 | return ret; | |
1585 | ||
b36bcbd6 | 1586 | ret = sensor_call(pcdev, video, g_mbus_config, &cfg); |
679419aa | 1587 | if (!ret) { |
34b27b13 | 1588 | common_flags = pxa_mbus_config_compatible(&cfg, |
679419aa GL |
1589 | bus_flags); |
1590 | if (!common_flags) { | |
295ab497 | 1591 | dev_warn(pcdev_to_dev(pcdev), |
679419aa GL |
1592 | "Flags incompatible: camera 0x%x, host 0x%lx\n", |
1593 | cfg.flags, bus_flags); | |
1594 | return -EINVAL; | |
1595 | } | |
1596 | } else if (ret != -ENOIOCTLCMD) { | |
1597 | return ret; | |
1598 | } else { | |
1599 | common_flags = bus_flags; | |
1600 | } | |
6a6c8786 GL |
1601 | |
1602 | pcdev->channels = 1; | |
1603 | ||
1604 | /* Make choises, based on platform preferences */ | |
679419aa GL |
1605 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
1606 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
6a6c8786 | 1607 | if (pcdev->platform_flags & PXA_CAMERA_HSP) |
679419aa | 1608 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
6a6c8786 | 1609 | else |
679419aa | 1610 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
6a6c8786 GL |
1611 | } |
1612 | ||
679419aa GL |
1613 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
1614 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { | |
6a6c8786 | 1615 | if (pcdev->platform_flags & PXA_CAMERA_VSP) |
679419aa | 1616 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
6a6c8786 | 1617 | else |
679419aa | 1618 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
6a6c8786 GL |
1619 | } |
1620 | ||
679419aa GL |
1621 | if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && |
1622 | (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { | |
6a6c8786 | 1623 | if (pcdev->platform_flags & PXA_CAMERA_PCP) |
679419aa | 1624 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; |
6a6c8786 | 1625 | else |
679419aa | 1626 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; |
6a6c8786 GL |
1627 | } |
1628 | ||
679419aa | 1629 | cfg.flags = common_flags; |
b36bcbd6 | 1630 | ret = sensor_call(pcdev, video, s_mbus_config, &cfg); |
679419aa | 1631 | if (ret < 0 && ret != -ENOIOCTLCMD) { |
283e4a82 RJ |
1632 | dev_dbg(pcdev_to_dev(pcdev), |
1633 | "camera s_mbus_config(0x%lx) returned %d\n", | |
679419aa | 1634 | common_flags, ret); |
6a6c8786 | 1635 | return ret; |
679419aa GL |
1636 | } |
1637 | ||
283e4a82 | 1638 | pxa_camera_setup_cicr(pcdev, common_flags, pixfmt); |
3bc43840 GL |
1639 | |
1640 | return 0; | |
1641 | } | |
1642 | ||
283e4a82 | 1643 | static int pxa_camera_try_bus_param(struct pxa_camera_dev *pcdev, |
2a48fc73 | 1644 | unsigned char buswidth) |
ad5f2e85 | 1645 | { |
679419aa GL |
1646 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
1647 | unsigned long bus_flags, common_flags; | |
2a48fc73 | 1648 | int ret = test_platform_param(pcdev, buswidth, &bus_flags); |
ad5f2e85 GL |
1649 | |
1650 | if (ret < 0) | |
1651 | return ret; | |
1652 | ||
b36bcbd6 | 1653 | ret = sensor_call(pcdev, video, g_mbus_config, &cfg); |
679419aa | 1654 | if (!ret) { |
34b27b13 | 1655 | common_flags = pxa_mbus_config_compatible(&cfg, |
679419aa GL |
1656 | bus_flags); |
1657 | if (!common_flags) { | |
295ab497 | 1658 | dev_warn(pcdev_to_dev(pcdev), |
679419aa GL |
1659 | "Flags incompatible: camera 0x%x, host 0x%lx\n", |
1660 | cfg.flags, bus_flags); | |
1661 | return -EINVAL; | |
1662 | } | |
1663 | } else if (ret == -ENOIOCTLCMD) { | |
1664 | ret = 0; | |
1665 | } | |
ad5f2e85 | 1666 | |
679419aa | 1667 | return ret; |
ad5f2e85 GL |
1668 | } |
1669 | ||
34b27b13 | 1670 | static const struct pxa_mbus_pixelfmt pxa_camera_formats[] = { |
2a48fc73 | 1671 | { |
760697be GL |
1672 | .fourcc = V4L2_PIX_FMT_YUV422P, |
1673 | .name = "Planar YUV422 16 bit", | |
1674 | .bits_per_sample = 8, | |
34b27b13 HV |
1675 | .packing = PXA_MBUS_PACKING_2X8_PADHI, |
1676 | .order = PXA_MBUS_ORDER_LE, | |
1677 | .layout = PXA_MBUS_LAYOUT_PLANAR_2Y_U_V, | |
2a48fc73 RJ |
1678 | }, |
1679 | }; | |
1680 | ||
760697be | 1681 | /* This will be corrected as we get more formats */ |
34b27b13 | 1682 | static bool pxa_camera_packing_supported(const struct pxa_mbus_pixelfmt *fmt) |
ad5f2e85 | 1683 | { |
34b27b13 | 1684 | return fmt->packing == PXA_MBUS_PACKING_NONE || |
760697be | 1685 | (fmt->bits_per_sample == 8 && |
34b27b13 | 1686 | fmt->packing == PXA_MBUS_PACKING_2X8_PADHI) || |
760697be | 1687 | (fmt->bits_per_sample > 8 && |
34b27b13 | 1688 | fmt->packing == PXA_MBUS_PACKING_EXTEND16); |
2a48fc73 RJ |
1689 | } |
1690 | ||
283e4a82 RJ |
1691 | static int pxa_camera_get_formats(struct v4l2_device *v4l2_dev, |
1692 | unsigned int idx, | |
2a48fc73 RJ |
1693 | struct soc_camera_format_xlate *xlate) |
1694 | { | |
283e4a82 | 1695 | struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(v4l2_dev); |
760697be | 1696 | int formats = 0, ret; |
ebcff5fc HV |
1697 | struct v4l2_subdev_mbus_code_enum code = { |
1698 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
1699 | .index = idx, | |
1700 | }; | |
34b27b13 | 1701 | const struct pxa_mbus_pixelfmt *fmt; |
2a48fc73 | 1702 | |
b36bcbd6 | 1703 | ret = sensor_call(pcdev, pad, enum_mbus_code, NULL, &code); |
760697be GL |
1704 | if (ret < 0) |
1705 | /* No more formats */ | |
1706 | return 0; | |
2a48fc73 | 1707 | |
34b27b13 | 1708 | fmt = pxa_mbus_get_fmtdesc(code.code); |
760697be | 1709 | if (!fmt) { |
283e4a82 RJ |
1710 | dev_err(pcdev_to_dev(pcdev), |
1711 | "Invalid format code #%u: %d\n", idx, code.code); | |
2a48fc73 | 1712 | return 0; |
760697be | 1713 | } |
3bc43840 | 1714 | |
760697be | 1715 | /* This also checks support for the requested bits-per-sample */ |
283e4a82 | 1716 | ret = pxa_camera_try_bus_param(pcdev, fmt->bits_per_sample); |
2a48fc73 RJ |
1717 | if (ret < 0) |
1718 | return 0; | |
1719 | ||
ebcff5fc | 1720 | switch (code.code) { |
27ffaeb0 | 1721 | case MEDIA_BUS_FMT_UYVY8_2X8: |
2a48fc73 RJ |
1722 | formats++; |
1723 | if (xlate) { | |
760697be | 1724 | xlate->host_fmt = &pxa_camera_formats[0]; |
ebcff5fc | 1725 | xlate->code = code.code; |
2a48fc73 | 1726 | xlate++; |
295ab497 RJ |
1727 | dev_dbg(pcdev_to_dev(pcdev), |
1728 | "Providing format %s using code %d\n", | |
ebcff5fc | 1729 | pxa_camera_formats[0].name, code.code); |
2a48fc73 | 1730 | } |
855f5aa4 | 1731 | /* fall through */ |
27ffaeb0 BB |
1732 | case MEDIA_BUS_FMT_VYUY8_2X8: |
1733 | case MEDIA_BUS_FMT_YUYV8_2X8: | |
1734 | case MEDIA_BUS_FMT_YVYU8_2X8: | |
1735 | case MEDIA_BUS_FMT_RGB565_2X8_LE: | |
1736 | case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE: | |
760697be | 1737 | if (xlate) |
295ab497 RJ |
1738 | dev_dbg(pcdev_to_dev(pcdev), |
1739 | "Providing format %s packed\n", | |
760697be | 1740 | fmt->name); |
2a48fc73 RJ |
1741 | break; |
1742 | default: | |
760697be GL |
1743 | if (!pxa_camera_packing_supported(fmt)) |
1744 | return 0; | |
1745 | if (xlate) | |
295ab497 | 1746 | dev_dbg(pcdev_to_dev(pcdev), |
2a48fc73 | 1747 | "Providing format %s in pass-through mode\n", |
760697be | 1748 | fmt->name); |
855f5aa4 | 1749 | break; |
760697be GL |
1750 | } |
1751 | ||
1752 | /* Generic pass-through */ | |
1753 | formats++; | |
1754 | if (xlate) { | |
1755 | xlate->host_fmt = fmt; | |
ebcff5fc | 1756 | xlate->code = code.code; |
760697be | 1757 | xlate++; |
2a48fc73 RJ |
1758 | } |
1759 | ||
1760 | return formats; | |
1761 | } | |
1762 | ||
283e4a82 RJ |
1763 | static int pxa_camera_build_formats(struct pxa_camera_dev *pcdev) |
1764 | { | |
1765 | struct soc_camera_format_xlate *xlate; | |
1766 | ||
34b27b13 | 1767 | xlate = pxa_mbus_build_fmts_xlate(&pcdev->v4l2_dev, pcdev->sensor, |
283e4a82 RJ |
1768 | pxa_camera_get_formats); |
1769 | if (IS_ERR(xlate)) | |
1770 | return PTR_ERR(xlate); | |
1771 | ||
1772 | pcdev->user_formats = xlate; | |
1773 | return 0; | |
1774 | } | |
1775 | ||
1776 | static void pxa_camera_destroy_formats(struct pxa_camera_dev *pcdev) | |
6a6c8786 | 1777 | { |
283e4a82 | 1778 | kfree(pcdev->user_formats); |
6a6c8786 GL |
1779 | } |
1780 | ||
760697be | 1781 | static int pxa_camera_check_frame(u32 width, u32 height) |
6a6c8786 GL |
1782 | { |
1783 | /* limit to pxa hardware capabilities */ | |
760697be GL |
1784 | return height < 32 || height > 2048 || width < 48 || width > 2048 || |
1785 | (width & 0x01); | |
6a6c8786 GL |
1786 | } |
1787 | ||
cdd657eb RJ |
1788 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1789 | static int pxac_vidioc_g_register(struct file *file, void *priv, | |
1790 | struct v4l2_dbg_register *reg) | |
1791 | { | |
1792 | struct pxa_camera_dev *pcdev = video_drvdata(file); | |
1793 | ||
1794 | if (reg->reg > CIBR2) | |
1795 | return -ERANGE; | |
1796 | ||
1797 | reg->val = __raw_readl(pcdev->base + reg->reg); | |
1798 | reg->size = sizeof(__u32); | |
1799 | return 0; | |
1800 | } | |
1801 | ||
1802 | static int pxac_vidioc_s_register(struct file *file, void *priv, | |
1803 | const struct v4l2_dbg_register *reg) | |
1804 | { | |
1805 | struct pxa_camera_dev *pcdev = video_drvdata(file); | |
1806 | ||
1807 | if (reg->reg > CIBR2) | |
1808 | return -ERANGE; | |
1809 | if (reg->size != sizeof(__u32)) | |
1810 | return -EINVAL; | |
1811 | __raw_writel(reg->val, pcdev->base + reg->reg); | |
1812 | return 0; | |
1813 | } | |
1814 | #endif | |
1815 | ||
283e4a82 RJ |
1816 | static int pxac_vidioc_enum_fmt_vid_cap(struct file *filp, void *priv, |
1817 | struct v4l2_fmtdesc *f) | |
ad5f2e85 | 1818 | { |
283e4a82 | 1819 | struct pxa_camera_dev *pcdev = video_drvdata(filp); |
34b27b13 | 1820 | const struct pxa_mbus_pixelfmt *format; |
283e4a82 | 1821 | unsigned int idx; |
760697be | 1822 | |
283e4a82 RJ |
1823 | for (idx = 0; pcdev->user_formats[idx].code; idx++); |
1824 | if (f->index >= idx) | |
760697be | 1825 | return -EINVAL; |
2a48fc73 | 1826 | |
283e4a82 RJ |
1827 | format = pcdev->user_formats[f->index].host_fmt; |
1828 | f->pixelformat = format->fourcc; | |
1829 | return 0; | |
1830 | } | |
760697be | 1831 | |
283e4a82 RJ |
1832 | static int pxac_vidioc_g_fmt_vid_cap(struct file *filp, void *priv, |
1833 | struct v4l2_format *f) | |
1834 | { | |
1835 | struct pxa_camera_dev *pcdev = video_drvdata(filp); | |
1836 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
25c4d74e | 1837 | |
283e4a82 RJ |
1838 | pix->width = pcdev->current_pix.width; |
1839 | pix->height = pcdev->current_pix.height; | |
1840 | pix->bytesperline = pcdev->current_pix.bytesperline; | |
1841 | pix->sizeimage = pcdev->current_pix.sizeimage; | |
1842 | pix->field = pcdev->current_pix.field; | |
1843 | pix->pixelformat = pcdev->current_fmt->host_fmt->fourcc; | |
1844 | pix->colorspace = pcdev->current_pix.colorspace; | |
1845 | dev_dbg(pcdev_to_dev(pcdev), "current_fmt->fourcc: 0x%08x\n", | |
1846 | pcdev->current_fmt->host_fmt->fourcc); | |
1847 | return 0; | |
ad5f2e85 GL |
1848 | } |
1849 | ||
283e4a82 RJ |
1850 | static int pxac_vidioc_try_fmt_vid_cap(struct file *filp, void *priv, |
1851 | struct v4l2_format *f) | |
3bc43840 | 1852 | { |
283e4a82 | 1853 | struct pxa_camera_dev *pcdev = video_drvdata(filp); |
2a48fc73 RJ |
1854 | const struct soc_camera_format_xlate *xlate; |
1855 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
5eab4983 HV |
1856 | struct v4l2_subdev_pad_config pad_cfg; |
1857 | struct v4l2_subdev_format format = { | |
1858 | .which = V4L2_SUBDEV_FORMAT_TRY, | |
1859 | }; | |
1860 | struct v4l2_mbus_framefmt *mf = &format.format; | |
2a48fc73 | 1861 | __u32 pixfmt = pix->pixelformat; |
bf507158 | 1862 | int ret; |
a2c8c68c | 1863 | |
34b27b13 | 1864 | xlate = pxa_mbus_xlate_by_fourcc(pcdev->user_formats, pixfmt); |
2a48fc73 | 1865 | if (!xlate) { |
295ab497 | 1866 | dev_warn(pcdev_to_dev(pcdev), "Format %x not found\n", pixfmt); |
25c4d74e | 1867 | return -EINVAL; |
2a48fc73 | 1868 | } |
25c4d74e | 1869 | |
92a8337b | 1870 | /* |
4a6b8df2 TP |
1871 | * Limit to pxa hardware capabilities. YUV422P planar format requires |
1872 | * images size to be a multiple of 16 bytes. If not, zeros will be | |
1873 | * inserted between Y and U planes, and U and V planes, which violates | |
1874 | * the YUV422P standard. | |
92a8337b | 1875 | */ |
4a6b8df2 TP |
1876 | v4l_bound_align_image(&pix->width, 48, 2048, 1, |
1877 | &pix->height, 32, 2048, 0, | |
6a6c8786 | 1878 | pixfmt == V4L2_PIX_FMT_YUV422P ? 4 : 0); |
92a8337b | 1879 | |
283e4a82 | 1880 | v4l2_fill_mbus_format(mf, pix, xlate->code); |
b36bcbd6 | 1881 | ret = sensor_call(pcdev, pad, set_fmt, &pad_cfg, &format); |
760697be GL |
1882 | if (ret < 0) |
1883 | return ret; | |
06daa1af | 1884 | |
283e4a82 | 1885 | v4l2_fill_pix_format(pix, mf); |
760697be | 1886 | |
283e4a82 | 1887 | /* Only progressive video supported so far */ |
5eab4983 | 1888 | switch (mf->field) { |
760697be GL |
1889 | case V4L2_FIELD_ANY: |
1890 | case V4L2_FIELD_NONE: | |
283e4a82 | 1891 | pix->field = V4L2_FIELD_NONE; |
760697be GL |
1892 | break; |
1893 | default: | |
1894 | /* TODO: support interlaced at least in pass-through mode */ | |
295ab497 | 1895 | dev_err(pcdev_to_dev(pcdev), "Field type %d unsupported.\n", |
5eab4983 | 1896 | mf->field); |
06daa1af GL |
1897 | return -EINVAL; |
1898 | } | |
1899 | ||
34b27b13 | 1900 | ret = pxa_mbus_bytes_per_line(pix->width, xlate->host_fmt); |
283e4a82 RJ |
1901 | if (ret < 0) |
1902 | return ret; | |
1903 | ||
1904 | pix->bytesperline = ret; | |
34b27b13 | 1905 | ret = pxa_mbus_image_size(xlate->host_fmt, pix->bytesperline, |
283e4a82 RJ |
1906 | pix->height); |
1907 | if (ret < 0) | |
1908 | return ret; | |
1909 | ||
1910 | pix->sizeimage = ret; | |
1911 | return 0; | |
3bc43840 GL |
1912 | } |
1913 | ||
283e4a82 RJ |
1914 | static int pxac_vidioc_s_fmt_vid_cap(struct file *filp, void *priv, |
1915 | struct v4l2_format *f) | |
3bc43840 | 1916 | { |
283e4a82 RJ |
1917 | struct pxa_camera_dev *pcdev = video_drvdata(filp); |
1918 | const struct soc_camera_format_xlate *xlate; | |
1919 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1920 | struct v4l2_subdev_format format = { | |
1921 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
1922 | }; | |
1923 | unsigned long flags; | |
1924 | int ret, is_busy; | |
1925 | ||
1926 | dev_dbg(pcdev_to_dev(pcdev), | |
1927 | "s_fmt_vid_cap(pix=%dx%d:%x)\n", | |
1928 | pix->width, pix->height, pix->pixelformat); | |
1929 | ||
1930 | spin_lock_irqsave(&pcdev->lock, flags); | |
1931 | is_busy = pcdev->active || vb2_is_busy(&pcdev->vb2_vq); | |
1932 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
1933 | ||
1934 | if (is_busy) | |
1935 | return -EBUSY; | |
1936 | ||
1937 | ret = pxac_vidioc_try_fmt_vid_cap(filp, priv, f); | |
1938 | if (ret) | |
1939 | return ret; | |
1940 | ||
34b27b13 | 1941 | xlate = pxa_mbus_xlate_by_fourcc(pcdev->user_formats, |
283e4a82 RJ |
1942 | pix->pixelformat); |
1943 | v4l2_fill_mbus_format(&format.format, pix, xlate->code); | |
1944 | ret = sensor_call(pcdev, pad, set_fmt, NULL, &format); | |
1945 | if (ret < 0) { | |
1946 | dev_warn(pcdev_to_dev(pcdev), | |
1947 | "Failed to configure for format %x\n", | |
1948 | pix->pixelformat); | |
1949 | } else if (pxa_camera_check_frame(pix->width, pix->height)) { | |
1950 | dev_warn(pcdev_to_dev(pcdev), | |
1951 | "Camera driver produced an unsupported frame %dx%d\n", | |
1952 | pix->width, pix->height); | |
1953 | return -EINVAL; | |
1954 | } | |
1955 | ||
1956 | pcdev->current_fmt = xlate; | |
1957 | pcdev->current_pix = *pix; | |
3bc43840 | 1958 | |
283e4a82 RJ |
1959 | ret = pxa_camera_set_bus_param(pcdev); |
1960 | return ret; | |
3bc43840 GL |
1961 | } |
1962 | ||
283e4a82 RJ |
1963 | static int pxac_vidioc_querycap(struct file *file, void *priv, |
1964 | struct v4l2_capability *cap) | |
3bc43840 | 1965 | { |
283e4a82 RJ |
1966 | strlcpy(cap->bus_info, "platform:pxa-camera", sizeof(cap->bus_info)); |
1967 | strlcpy(cap->driver, PXA_CAM_DRV_NAME, sizeof(cap->driver)); | |
3bc43840 | 1968 | strlcpy(cap->card, pxa_cam_driver_description, sizeof(cap->card)); |
7d96c3e4 GL |
1969 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
1970 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; | |
3bc43840 GL |
1971 | |
1972 | return 0; | |
1973 | } | |
1974 | ||
283e4a82 RJ |
1975 | static int pxac_vidioc_enum_input(struct file *file, void *priv, |
1976 | struct v4l2_input *i) | |
1977 | { | |
1978 | if (i->index > 0) | |
1979 | return -EINVAL; | |
1980 | ||
1981 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
1982 | strlcpy(i->name, "Camera", sizeof(i->name)); | |
1983 | ||
1984 | return 0; | |
1985 | } | |
1986 | ||
1987 | static int pxac_vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
1988 | { | |
1989 | *i = 0; | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | ||
1994 | static int pxac_vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
1995 | { | |
1996 | if (i > 0) | |
1997 | return -EINVAL; | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
2002 | static int pxac_fops_camera_open(struct file *filp) | |
2003 | { | |
2004 | struct pxa_camera_dev *pcdev = video_drvdata(filp); | |
2005 | int ret; | |
2006 | ||
2007 | mutex_lock(&pcdev->mlock); | |
2008 | ret = v4l2_fh_open(filp); | |
2009 | if (ret < 0) | |
2010 | goto out; | |
2011 | ||
2012 | ret = sensor_call(pcdev, core, s_power, 1); | |
2013 | if (ret) | |
2014 | v4l2_fh_release(filp); | |
2015 | out: | |
2016 | mutex_unlock(&pcdev->mlock); | |
2017 | return ret; | |
2018 | } | |
2019 | ||
2020 | static int pxac_fops_camera_release(struct file *filp) | |
2021 | { | |
2022 | struct pxa_camera_dev *pcdev = video_drvdata(filp); | |
2023 | int ret; | |
2024 | ||
2025 | ret = vb2_fop_release(filp); | |
2026 | if (ret < 0) | |
2027 | return ret; | |
2028 | ||
2029 | mutex_lock(&pcdev->mlock); | |
2030 | ret = sensor_call(pcdev, core, s_power, 0); | |
2031 | mutex_unlock(&pcdev->mlock); | |
2032 | ||
2033 | return ret; | |
2034 | } | |
2035 | ||
2036 | static const struct v4l2_file_operations pxa_camera_fops = { | |
2037 | .owner = THIS_MODULE, | |
2038 | .open = pxac_fops_camera_open, | |
2039 | .release = pxac_fops_camera_release, | |
2040 | .read = vb2_fop_read, | |
2041 | .poll = vb2_fop_poll, | |
2042 | .mmap = vb2_fop_mmap, | |
2043 | .unlocked_ioctl = video_ioctl2, | |
2044 | }; | |
2045 | ||
2046 | static const struct v4l2_ioctl_ops pxa_camera_ioctl_ops = { | |
2047 | .vidioc_querycap = pxac_vidioc_querycap, | |
2048 | ||
2049 | .vidioc_enum_input = pxac_vidioc_enum_input, | |
2050 | .vidioc_g_input = pxac_vidioc_g_input, | |
2051 | .vidioc_s_input = pxac_vidioc_s_input, | |
2052 | ||
2053 | .vidioc_enum_fmt_vid_cap = pxac_vidioc_enum_fmt_vid_cap, | |
2054 | .vidioc_g_fmt_vid_cap = pxac_vidioc_g_fmt_vid_cap, | |
2055 | .vidioc_s_fmt_vid_cap = pxac_vidioc_s_fmt_vid_cap, | |
2056 | .vidioc_try_fmt_vid_cap = pxac_vidioc_try_fmt_vid_cap, | |
2057 | ||
2058 | .vidioc_reqbufs = vb2_ioctl_reqbufs, | |
2059 | .vidioc_create_bufs = vb2_ioctl_create_bufs, | |
2060 | .vidioc_querybuf = vb2_ioctl_querybuf, | |
2061 | .vidioc_qbuf = vb2_ioctl_qbuf, | |
2062 | .vidioc_dqbuf = vb2_ioctl_dqbuf, | |
2063 | .vidioc_expbuf = vb2_ioctl_expbuf, | |
2064 | .vidioc_streamon = vb2_ioctl_streamon, | |
2065 | .vidioc_streamoff = vb2_ioctl_streamoff, | |
cdd657eb RJ |
2066 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
2067 | .vidioc_g_register = pxac_vidioc_g_register, | |
2068 | .vidioc_s_register = pxac_vidioc_s_register, | |
2069 | #endif | |
283e4a82 RJ |
2070 | }; |
2071 | ||
2072 | static struct v4l2_clk_ops pxa_camera_mclk_ops = { | |
2073 | }; | |
2074 | ||
2075 | static const struct video_device pxa_camera_videodev_template = { | |
2076 | .name = "pxa-camera", | |
2077 | .minor = -1, | |
2078 | .fops = &pxa_camera_fops, | |
2079 | .ioctl_ops = &pxa_camera_ioctl_ops, | |
2080 | .release = video_device_release_empty, | |
2081 | .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING, | |
2082 | }; | |
2083 | ||
2084 | static int pxa_camera_sensor_bound(struct v4l2_async_notifier *notifier, | |
2085 | struct v4l2_subdev *subdev, | |
2086 | struct v4l2_async_subdev *asd) | |
2087 | { | |
2088 | int err; | |
2089 | struct v4l2_device *v4l2_dev = notifier->v4l2_dev; | |
2090 | struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(v4l2_dev); | |
2091 | struct video_device *vdev = &pcdev->vdev; | |
2092 | struct v4l2_pix_format *pix = &pcdev->current_pix; | |
2093 | struct v4l2_subdev_format format = { | |
2094 | .which = V4L2_SUBDEV_FORMAT_ACTIVE, | |
2095 | }; | |
2096 | struct v4l2_mbus_framefmt *mf = &format.format; | |
2097 | ||
2098 | dev_info(pcdev_to_dev(pcdev), "%s(): trying to bind a device\n", | |
2099 | __func__); | |
2100 | mutex_lock(&pcdev->mlock); | |
2101 | *vdev = pxa_camera_videodev_template; | |
2102 | vdev->v4l2_dev = v4l2_dev; | |
2103 | vdev->lock = &pcdev->mlock; | |
2104 | pcdev->sensor = subdev; | |
2105 | pcdev->vdev.queue = &pcdev->vb2_vq; | |
2106 | pcdev->vdev.v4l2_dev = &pcdev->v4l2_dev; | |
2107 | pcdev->vdev.ctrl_handler = subdev->ctrl_handler; | |
2108 | video_set_drvdata(&pcdev->vdev, pcdev); | |
2109 | ||
2110 | err = pxa_camera_build_formats(pcdev); | |
2111 | if (err) { | |
2112 | dev_err(pcdev_to_dev(pcdev), "building formats failed: %d\n", | |
2113 | err); | |
2114 | goto out; | |
2115 | } | |
2116 | ||
2117 | pcdev->current_fmt = pcdev->user_formats; | |
2118 | pix->field = V4L2_FIELD_NONE; | |
2119 | pix->width = DEFAULT_WIDTH; | |
2120 | pix->height = DEFAULT_HEIGHT; | |
2121 | pix->bytesperline = | |
34b27b13 | 2122 | pxa_mbus_bytes_per_line(pix->width, |
283e4a82 RJ |
2123 | pcdev->current_fmt->host_fmt); |
2124 | pix->sizeimage = | |
34b27b13 | 2125 | pxa_mbus_image_size(pcdev->current_fmt->host_fmt, |
283e4a82 RJ |
2126 | pix->bytesperline, pix->height); |
2127 | pix->pixelformat = pcdev->current_fmt->host_fmt->fourcc; | |
2128 | v4l2_fill_mbus_format(mf, pix, pcdev->current_fmt->code); | |
2129 | err = sensor_call(pcdev, pad, set_fmt, NULL, &format); | |
2130 | if (err) | |
2131 | goto out; | |
2132 | ||
2133 | v4l2_fill_pix_format(pix, mf); | |
2134 | pr_info("%s(): colorspace=0x%x pixfmt=0x%x\n", | |
2135 | __func__, pix->colorspace, pix->pixelformat); | |
2136 | ||
2137 | err = pxa_camera_init_videobuf2(pcdev); | |
2138 | if (err) | |
2139 | goto out; | |
2140 | ||
2141 | err = video_register_device(&pcdev->vdev, VFL_TYPE_GRABBER, -1); | |
2142 | if (err) { | |
2143 | v4l2_err(v4l2_dev, "register video device failed: %d\n", err); | |
2144 | pcdev->sensor = NULL; | |
2145 | } else { | |
2146 | dev_info(pcdev_to_dev(pcdev), | |
2147 | "PXA Camera driver attached to camera %s\n", | |
2148 | subdev->name); | |
2149 | } | |
2150 | out: | |
2151 | mutex_unlock(&pcdev->mlock); | |
2152 | return err; | |
2153 | } | |
2154 | ||
2155 | static void pxa_camera_sensor_unbind(struct v4l2_async_notifier *notifier, | |
2156 | struct v4l2_subdev *subdev, | |
2157 | struct v4l2_async_subdev *asd) | |
2158 | { | |
2159 | struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(notifier->v4l2_dev); | |
2160 | ||
2161 | mutex_lock(&pcdev->mlock); | |
2162 | dev_info(pcdev_to_dev(pcdev), | |
2163 | "PXA Camera driver detached from camera %s\n", | |
2164 | subdev->name); | |
2165 | ||
2166 | /* disable capture, disable interrupts */ | |
2167 | __raw_writel(0x3ff, pcdev->base + CICR0); | |
2168 | ||
2169 | /* Stop DMA engine */ | |
2170 | pxa_dma_stop_channels(pcdev); | |
2171 | ||
2172 | pxa_camera_destroy_formats(pcdev); | |
2173 | video_unregister_device(&pcdev->vdev); | |
2174 | pcdev->sensor = NULL; | |
2175 | ||
2176 | mutex_unlock(&pcdev->mlock); | |
2177 | } | |
2178 | ||
6f28435d RJ |
2179 | /* |
2180 | * Driver probe, remove, suspend and resume operations | |
2181 | */ | |
7254026c | 2182 | static int pxa_camera_suspend(struct device *dev) |
3f6ac497 | 2183 | { |
283e4a82 | 2184 | struct pxa_camera_dev *pcdev = dev_get_drvdata(dev); |
3f6ac497 RJ |
2185 | int i = 0, ret = 0; |
2186 | ||
5ca11fa3 EM |
2187 | pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR0); |
2188 | pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR1); | |
2189 | pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR2); | |
2190 | pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR3); | |
2191 | pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR4); | |
3f6ac497 | 2192 | |
283e4a82 | 2193 | if (pcdev->sensor) { |
b36bcbd6 | 2194 | ret = sensor_call(pcdev, core, s_power, 0); |
497833c6 GL |
2195 | if (ret == -ENOIOCTLCMD) |
2196 | ret = 0; | |
2197 | } | |
3f6ac497 RJ |
2198 | |
2199 | return ret; | |
2200 | } | |
2201 | ||
7254026c | 2202 | static int pxa_camera_resume(struct device *dev) |
3f6ac497 | 2203 | { |
283e4a82 | 2204 | struct pxa_camera_dev *pcdev = dev_get_drvdata(dev); |
3f6ac497 RJ |
2205 | int i = 0, ret = 0; |
2206 | ||
5ca11fa3 EM |
2207 | __raw_writel(pcdev->save_cicr[i++] & ~CICR0_ENB, pcdev->base + CICR0); |
2208 | __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR1); | |
2209 | __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR2); | |
2210 | __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR3); | |
2211 | __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR4); | |
3f6ac497 | 2212 | |
283e4a82 | 2213 | if (pcdev->sensor) { |
b36bcbd6 | 2214 | ret = sensor_call(pcdev, core, s_power, 1); |
497833c6 GL |
2215 | if (ret == -ENOIOCTLCMD) |
2216 | ret = 0; | |
2217 | } | |
3f6ac497 RJ |
2218 | |
2219 | /* Restart frame capture if active buffer exists */ | |
256b0233 RJ |
2220 | if (!ret && pcdev->active) |
2221 | pxa_camera_start_capture(pcdev); | |
3f6ac497 RJ |
2222 | |
2223 | return ret; | |
2224 | } | |
2225 | ||
e9a1d94f | 2226 | static int pxa_camera_pdata_from_dt(struct device *dev, |
283e4a82 RJ |
2227 | struct pxa_camera_dev *pcdev, |
2228 | struct v4l2_async_subdev *asd) | |
e9a1d94f RJ |
2229 | { |
2230 | u32 mclk_rate; | |
283e4a82 | 2231 | struct device_node *remote, *np = dev->of_node; |
e9a1d94f RJ |
2232 | struct v4l2_of_endpoint ep; |
2233 | int err = of_property_read_u32(np, "clock-frequency", | |
2234 | &mclk_rate); | |
2235 | if (!err) { | |
2236 | pcdev->platform_flags |= PXA_CAMERA_MCLK_EN; | |
2237 | pcdev->mclk = mclk_rate; | |
2238 | } | |
2239 | ||
2240 | np = of_graph_get_next_endpoint(np, NULL); | |
2241 | if (!np) { | |
283e4a82 | 2242 | dev_err(dev, "could not find endpoint\n"); |
e9a1d94f RJ |
2243 | return -EINVAL; |
2244 | } | |
2245 | ||
2246 | err = v4l2_of_parse_endpoint(np, &ep); | |
2247 | if (err) { | |
283e4a82 | 2248 | dev_err(dev, "could not parse endpoint\n"); |
e9a1d94f RJ |
2249 | goto out; |
2250 | } | |
2251 | ||
2252 | switch (ep.bus.parallel.bus_width) { | |
2253 | case 4: | |
2254 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_4; | |
2255 | break; | |
2256 | case 5: | |
2257 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_5; | |
2258 | break; | |
2259 | case 8: | |
2260 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_8; | |
2261 | break; | |
2262 | case 9: | |
2263 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_9; | |
2264 | break; | |
2265 | case 10: | |
2266 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_10; | |
2267 | break; | |
2268 | default: | |
2269 | break; | |
c611c908 | 2270 | } |
e9a1d94f RJ |
2271 | |
2272 | if (ep.bus.parallel.flags & V4L2_MBUS_MASTER) | |
2273 | pcdev->platform_flags |= PXA_CAMERA_MASTER; | |
2274 | if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) | |
2275 | pcdev->platform_flags |= PXA_CAMERA_HSP; | |
2276 | if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) | |
2277 | pcdev->platform_flags |= PXA_CAMERA_VSP; | |
2278 | if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_RISING) | |
2279 | pcdev->platform_flags |= PXA_CAMERA_PCLK_EN | PXA_CAMERA_PCP; | |
2280 | if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) | |
2281 | pcdev->platform_flags |= PXA_CAMERA_PCLK_EN; | |
2282 | ||
283e4a82 RJ |
2283 | asd->match_type = V4L2_ASYNC_MATCH_OF; |
2284 | remote = of_graph_get_remote_port(np); | |
2285 | if (remote) { | |
2286 | asd->match.of.node = remote; | |
2287 | of_node_put(remote); | |
2288 | } else { | |
2289 | dev_notice(dev, "no remote for %s\n", of_node_full_name(np)); | |
2290 | } | |
2291 | ||
e9a1d94f RJ |
2292 | out: |
2293 | of_node_put(np); | |
2294 | ||
2295 | return err; | |
2296 | } | |
2297 | ||
4c62e976 | 2298 | static int pxa_camera_probe(struct platform_device *pdev) |
3bc43840 GL |
2299 | { |
2300 | struct pxa_camera_dev *pcdev; | |
2301 | struct resource *res; | |
2302 | void __iomem *base; | |
1e77d55a RJ |
2303 | struct dma_slave_config config = { |
2304 | .src_addr_width = 0, | |
2305 | .src_maxburst = 8, | |
2306 | .direction = DMA_DEV_TO_MEM, | |
2307 | }; | |
2308 | dma_cap_mask_t mask; | |
2309 | struct pxad_param params; | |
283e4a82 | 2310 | char clk_name[V4L2_CLK_NAME_SIZE]; |
02da4659 | 2311 | int irq; |
1e77d55a | 2312 | int err = 0, i; |
3bc43840 GL |
2313 | |
2314 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2315 | irq = platform_get_irq(pdev, 0); | |
47de201c JL |
2316 | if (!res || irq < 0) |
2317 | return -ENODEV; | |
3bc43840 | 2318 | |
47de201c | 2319 | pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL); |
3bc43840 | 2320 | if (!pcdev) { |
7102b773 | 2321 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
47de201c | 2322 | return -ENOMEM; |
3bc43840 GL |
2323 | } |
2324 | ||
47de201c JL |
2325 | pcdev->clk = devm_clk_get(&pdev->dev, NULL); |
2326 | if (IS_ERR(pcdev->clk)) | |
2327 | return PTR_ERR(pcdev->clk); | |
3bc43840 | 2328 | |
3bc43840 GL |
2329 | pcdev->res = res; |
2330 | ||
2331 | pcdev->pdata = pdev->dev.platform_data; | |
e9a1d94f | 2332 | if (&pdev->dev.of_node && !pcdev->pdata) { |
283e4a82 | 2333 | err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev, &pcdev->asd); |
e9a1d94f RJ |
2334 | } else { |
2335 | pcdev->platform_flags = pcdev->pdata->flags; | |
2336 | pcdev->mclk = pcdev->pdata->mclk_10khz * 10000; | |
283e4a82 RJ |
2337 | pcdev->asd.match_type = V4L2_ASYNC_MATCH_I2C; |
2338 | pcdev->asd.match.i2c.adapter_id = | |
2339 | pcdev->pdata->sensor_i2c_adapter_id; | |
2340 | pcdev->asd.match.i2c.address = pcdev->pdata->sensor_i2c_address; | |
e9a1d94f RJ |
2341 | } |
2342 | if (err < 0) | |
2343 | return err; | |
2344 | ||
ad5f2e85 GL |
2345 | if (!(pcdev->platform_flags & (PXA_CAMERA_DATAWIDTH_8 | |
2346 | PXA_CAMERA_DATAWIDTH_9 | PXA_CAMERA_DATAWIDTH_10))) { | |
5d28d525 GL |
2347 | /* |
2348 | * Platform hasn't set available data widths. This is bad. | |
2349 | * Warn and use a default. | |
2350 | */ | |
3bc43840 GL |
2351 | dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " |
2352 | "data widths, using default 10 bit\n"); | |
2353 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_10; | |
2354 | } | |
679419aa GL |
2355 | if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_8) |
2356 | pcdev->width_flags = 1 << 7; | |
2357 | if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_9) | |
2358 | pcdev->width_flags |= 1 << 8; | |
2359 | if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_10) | |
2360 | pcdev->width_flags |= 1 << 9; | |
cf34cba7 | 2361 | if (!pcdev->mclk) { |
3bc43840 | 2362 | dev_warn(&pdev->dev, |
cf34cba7 | 2363 | "mclk == 0! Please, fix your platform data. " |
3bc43840 | 2364 | "Using default 20MHz\n"); |
cf34cba7 | 2365 | pcdev->mclk = 20000000; |
3bc43840 GL |
2366 | } |
2367 | ||
40e2e092 | 2368 | pcdev->mclk_divisor = mclk_get_divisor(pdev, pcdev); |
cf34cba7 | 2369 | |
3bc43840 GL |
2370 | INIT_LIST_HEAD(&pcdev->capture); |
2371 | spin_lock_init(&pcdev->lock); | |
283e4a82 | 2372 | mutex_init(&pcdev->mlock); |
3bc43840 GL |
2373 | |
2374 | /* | |
2375 | * Request the regions. | |
2376 | */ | |
8efdb135 SK |
2377 | base = devm_ioremap_resource(&pdev->dev, res); |
2378 | if (IS_ERR(base)) | |
2379 | return PTR_ERR(base); | |
2380 | ||
3bc43840 GL |
2381 | pcdev->irq = irq; |
2382 | pcdev->base = base; | |
3bc43840 GL |
2383 | |
2384 | /* request dma */ | |
1e77d55a RJ |
2385 | dma_cap_zero(mask); |
2386 | dma_cap_set(DMA_SLAVE, mask); | |
2387 | dma_cap_set(DMA_PRIVATE, mask); | |
2388 | ||
2389 | params.prio = 0; | |
2390 | params.drcmr = 68; | |
2391 | pcdev->dma_chans[0] = | |
2392 | dma_request_slave_channel_compat(mask, pxad_filter_fn, | |
2393 | ¶ms, &pdev->dev, "CI_Y"); | |
2394 | if (!pcdev->dma_chans[0]) { | |
eff505fa | 2395 | dev_err(&pdev->dev, "Can't request DMA for Y\n"); |
1e77d55a | 2396 | return -ENODEV; |
3bc43840 | 2397 | } |
a5462e5b | 2398 | |
1e77d55a RJ |
2399 | params.drcmr = 69; |
2400 | pcdev->dma_chans[1] = | |
2401 | dma_request_slave_channel_compat(mask, pxad_filter_fn, | |
2402 | ¶ms, &pdev->dev, "CI_U"); | |
2403 | if (!pcdev->dma_chans[1]) { | |
2404 | dev_err(&pdev->dev, "Can't request DMA for Y\n"); | |
a5462e5b MR |
2405 | goto exit_free_dma_y; |
2406 | } | |
a5462e5b | 2407 | |
1e77d55a RJ |
2408 | params.drcmr = 70; |
2409 | pcdev->dma_chans[2] = | |
2410 | dma_request_slave_channel_compat(mask, pxad_filter_fn, | |
2411 | ¶ms, &pdev->dev, "CI_V"); | |
2412 | if (!pcdev->dma_chans[2]) { | |
eff505fa | 2413 | dev_err(&pdev->dev, "Can't request DMA for V\n"); |
a5462e5b MR |
2414 | goto exit_free_dma_u; |
2415 | } | |
3bc43840 | 2416 | |
1e77d55a RJ |
2417 | for (i = 0; i < 3; i++) { |
2418 | config.src_addr = pcdev->res->start + CIBR0 + i * 8; | |
2419 | err = dmaengine_slave_config(pcdev->dma_chans[i], &config); | |
2420 | if (err < 0) { | |
2421 | dev_err(&pdev->dev, "dma slave config failed: %d\n", | |
2422 | err); | |
2423 | goto exit_free_dma; | |
2424 | } | |
2425 | } | |
3bc43840 GL |
2426 | |
2427 | /* request irq */ | |
47de201c JL |
2428 | err = devm_request_irq(&pdev->dev, pcdev->irq, pxa_camera_irq, 0, |
2429 | PXA_CAM_DRV_NAME, pcdev); | |
3bc43840 | 2430 | if (err) { |
47de201c | 2431 | dev_err(&pdev->dev, "Camera interrupt register failed\n"); |
3bc43840 GL |
2432 | goto exit_free_dma; |
2433 | } | |
2434 | ||
e623ebe6 | 2435 | tasklet_init(&pcdev->task_eof, pxa_camera_eof, (unsigned long)pcdev); |
eff505fa | 2436 | |
283e4a82 RJ |
2437 | pxa_camera_activate(pcdev); |
2438 | ||
2439 | dev_set_drvdata(&pdev->dev, pcdev); | |
2440 | err = v4l2_device_register(&pdev->dev, &pcdev->v4l2_dev); | |
3bc43840 | 2441 | if (err) |
47de201c | 2442 | goto exit_free_dma; |
3bc43840 | 2443 | |
283e4a82 RJ |
2444 | pcdev->asds[0] = &pcdev->asd; |
2445 | pcdev->notifier.subdevs = pcdev->asds; | |
2446 | pcdev->notifier.num_subdevs = 1; | |
2447 | pcdev->notifier.bound = pxa_camera_sensor_bound; | |
2448 | pcdev->notifier.unbind = pxa_camera_sensor_unbind; | |
2449 | ||
2450 | if (!of_have_populated_dt()) | |
2451 | pcdev->asd.match_type = V4L2_ASYNC_MATCH_I2C; | |
2452 | ||
2453 | err = pxa_camera_init_videobuf2(pcdev); | |
2454 | if (err) | |
2455 | goto exit_free_v4l2dev; | |
3bc43840 | 2456 | |
283e4a82 RJ |
2457 | if (pcdev->mclk) { |
2458 | v4l2_clk_name_i2c(clk_name, sizeof(clk_name), | |
2459 | pcdev->asd.match.i2c.adapter_id, | |
2460 | pcdev->asd.match.i2c.address); | |
2461 | ||
2462 | pcdev->mclk_clk = v4l2_clk_register(&pxa_camera_mclk_ops, | |
2463 | clk_name, NULL); | |
2464 | if (IS_ERR(pcdev->mclk_clk)) | |
2465 | return PTR_ERR(pcdev->mclk_clk); | |
2466 | } | |
2467 | ||
2468 | err = v4l2_async_notifier_register(&pcdev->v4l2_dev, &pcdev->notifier); | |
2469 | if (err) | |
2470 | goto exit_free_clk; | |
2471 | ||
2472 | return 0; | |
2473 | exit_free_clk: | |
2474 | v4l2_clk_unregister(pcdev->mclk_clk); | |
2475 | exit_free_v4l2dev: | |
2476 | v4l2_device_unregister(&pcdev->v4l2_dev); | |
3bc43840 | 2477 | exit_free_dma: |
1e77d55a | 2478 | dma_release_channel(pcdev->dma_chans[2]); |
a5462e5b | 2479 | exit_free_dma_u: |
1e77d55a | 2480 | dma_release_channel(pcdev->dma_chans[1]); |
a5462e5b | 2481 | exit_free_dma_y: |
1e77d55a | 2482 | dma_release_channel(pcdev->dma_chans[0]); |
3bc43840 GL |
2483 | return err; |
2484 | } | |
2485 | ||
4c62e976 | 2486 | static int pxa_camera_remove(struct platform_device *pdev) |
3bc43840 | 2487 | { |
283e4a82 | 2488 | struct pxa_camera_dev *pcdev = dev_get_drvdata(&pdev->dev); |
3bc43840 | 2489 | |
283e4a82 | 2490 | pxa_camera_deactivate(pcdev); |
1e77d55a RJ |
2491 | dma_release_channel(pcdev->dma_chans[0]); |
2492 | dma_release_channel(pcdev->dma_chans[1]); | |
2493 | dma_release_channel(pcdev->dma_chans[2]); | |
3bc43840 | 2494 | |
283e4a82 RJ |
2495 | v4l2_clk_unregister(pcdev->mclk_clk); |
2496 | v4l2_device_unregister(&pcdev->v4l2_dev); | |
3bc43840 | 2497 | |
7102b773 | 2498 | dev_info(&pdev->dev, "PXA Camera driver unloaded\n"); |
3bc43840 | 2499 | |
3bc43840 GL |
2500 | return 0; |
2501 | } | |
2502 | ||
56a49194 | 2503 | static const struct dev_pm_ops pxa_camera_pm = { |
7254026c GL |
2504 | .suspend = pxa_camera_suspend, |
2505 | .resume = pxa_camera_resume, | |
2506 | }; | |
2507 | ||
e9a1d94f RJ |
2508 | static const struct of_device_id pxa_camera_of_match[] = { |
2509 | { .compatible = "marvell,pxa270-qci", }, | |
2510 | {}, | |
2511 | }; | |
2512 | MODULE_DEVICE_TABLE(of, pxa_camera_of_match); | |
2513 | ||
3bc43840 | 2514 | static struct platform_driver pxa_camera_driver = { |
6003b2ad | 2515 | .driver = { |
3bc43840 | 2516 | .name = PXA_CAM_DRV_NAME, |
7254026c | 2517 | .pm = &pxa_camera_pm, |
e9a1d94f | 2518 | .of_match_table = of_match_ptr(pxa_camera_of_match), |
3bc43840 GL |
2519 | }, |
2520 | .probe = pxa_camera_probe, | |
4c62e976 | 2521 | .remove = pxa_camera_remove, |
3bc43840 GL |
2522 | }; |
2523 | ||
1d6629b1 | 2524 | module_platform_driver(pxa_camera_driver); |
3bc43840 GL |
2525 | |
2526 | MODULE_DESCRIPTION("PXA27x SoC Camera Host driver"); | |
2527 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
2528 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 2529 | MODULE_VERSION(PXA_CAM_VERSION); |
40e2e092 | 2530 | MODULE_ALIAS("platform:" PXA_CAM_DRV_NAME); |