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2066930d BS |
1 | /* |
2 | * V4L2 Driver for i.MX27/i.MX25 camera host | |
3 | * | |
4 | * Copyright (C) 2008, Sascha Hauer, Pengutronix | |
5 | * Copyright (C) 2010, Baruch Siach, Orex Computed Radiography | |
c6a41e32 | 6 | * Copyright (C) 2012, Javier Martin, Vista Silicon S.L. |
2066930d BS |
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 | ||
14 | #include <linux/init.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/dma-mapping.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/fs.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/mm.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/time.h> | |
2066930d BS |
27 | #include <linux/device.h> |
28 | #include <linux/platform_device.h> | |
29 | #include <linux/mutex.h> | |
30 | #include <linux/clk.h> | |
31 | ||
32 | #include <media/v4l2-common.h> | |
33 | #include <media/v4l2-dev.h> | |
c6a41e32 JM |
34 | #include <media/videobuf2-core.h> |
35 | #include <media/videobuf2-dma-contig.h> | |
2066930d BS |
36 | #include <media/soc_camera.h> |
37 | #include <media/soc_mediabus.h> | |
38 | ||
39 | #include <linux/videodev2.h> | |
40 | ||
41 | #include <mach/mx2_cam.h> | |
2066930d BS |
42 | #include <mach/hardware.h> |
43 | ||
44 | #include <asm/dma.h> | |
45 | ||
46 | #define MX2_CAM_DRV_NAME "mx2-camera" | |
64dc3c1a | 47 | #define MX2_CAM_VERSION "0.0.6" |
2066930d BS |
48 | #define MX2_CAM_DRIVER_DESCRIPTION "i.MX2x_Camera" |
49 | ||
50 | /* reset values */ | |
51 | #define CSICR1_RESET_VAL 0x40000800 | |
52 | #define CSICR2_RESET_VAL 0x0 | |
53 | #define CSICR3_RESET_VAL 0x0 | |
54 | ||
55 | /* csi control reg 1 */ | |
56 | #define CSICR1_SWAP16_EN (1 << 31) | |
57 | #define CSICR1_EXT_VSYNC (1 << 30) | |
58 | #define CSICR1_EOF_INTEN (1 << 29) | |
59 | #define CSICR1_PRP_IF_EN (1 << 28) | |
60 | #define CSICR1_CCIR_MODE (1 << 27) | |
61 | #define CSICR1_COF_INTEN (1 << 26) | |
62 | #define CSICR1_SF_OR_INTEN (1 << 25) | |
63 | #define CSICR1_RF_OR_INTEN (1 << 24) | |
64 | #define CSICR1_STATFF_LEVEL (3 << 22) | |
65 | #define CSICR1_STATFF_INTEN (1 << 21) | |
66 | #define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) /* MX27 */ | |
67 | #define CSICR1_FB2_DMA_INTEN (1 << 20) /* MX25 */ | |
68 | #define CSICR1_FB1_DMA_INTEN (1 << 19) /* MX25 */ | |
69 | #define CSICR1_RXFF_INTEN (1 << 18) | |
70 | #define CSICR1_SOF_POL (1 << 17) | |
71 | #define CSICR1_SOF_INTEN (1 << 16) | |
72 | #define CSICR1_MCLKDIV(d) (((d) & 0xF) << 12) | |
73 | #define CSICR1_HSYNC_POL (1 << 11) | |
74 | #define CSICR1_CCIR_EN (1 << 10) | |
75 | #define CSICR1_MCLKEN (1 << 9) | |
76 | #define CSICR1_FCC (1 << 8) | |
77 | #define CSICR1_PACK_DIR (1 << 7) | |
78 | #define CSICR1_CLR_STATFIFO (1 << 6) | |
79 | #define CSICR1_CLR_RXFIFO (1 << 5) | |
80 | #define CSICR1_GCLK_MODE (1 << 4) | |
81 | #define CSICR1_INV_DATA (1 << 3) | |
82 | #define CSICR1_INV_PCLK (1 << 2) | |
83 | #define CSICR1_REDGE (1 << 1) | |
84 | ||
85 | #define SHIFT_STATFF_LEVEL 22 | |
86 | #define SHIFT_RXFF_LEVEL 19 | |
87 | #define SHIFT_MCLKDIV 12 | |
88 | ||
89 | /* control reg 3 */ | |
90 | #define CSICR3_FRMCNT (0xFFFF << 16) | |
91 | #define CSICR3_FRMCNT_RST (1 << 15) | |
92 | #define CSICR3_DMA_REFLASH_RFF (1 << 14) | |
93 | #define CSICR3_DMA_REFLASH_SFF (1 << 13) | |
94 | #define CSICR3_DMA_REQ_EN_RFF (1 << 12) | |
95 | #define CSICR3_DMA_REQ_EN_SFF (1 << 11) | |
96 | #define CSICR3_RXFF_LEVEL(l) (((l) & 7) << 4) /* MX25 */ | |
97 | #define CSICR3_CSI_SUP (1 << 3) | |
98 | #define CSICR3_ZERO_PACK_EN (1 << 2) | |
99 | #define CSICR3_ECC_INT_EN (1 << 1) | |
100 | #define CSICR3_ECC_AUTO_EN (1 << 0) | |
101 | ||
102 | #define SHIFT_FRMCNT 16 | |
103 | ||
104 | /* csi status reg */ | |
105 | #define CSISR_SFF_OR_INT (1 << 25) | |
106 | #define CSISR_RFF_OR_INT (1 << 24) | |
107 | #define CSISR_STATFF_INT (1 << 21) | |
108 | #define CSISR_DMA_TSF_FB2_INT (1 << 20) /* MX25 */ | |
109 | #define CSISR_DMA_TSF_FB1_INT (1 << 19) /* MX25 */ | |
110 | #define CSISR_RXFF_INT (1 << 18) | |
111 | #define CSISR_EOF_INT (1 << 17) | |
112 | #define CSISR_SOF_INT (1 << 16) | |
113 | #define CSISR_F2_INT (1 << 15) | |
114 | #define CSISR_F1_INT (1 << 14) | |
115 | #define CSISR_COF_INT (1 << 13) | |
116 | #define CSISR_ECC_INT (1 << 1) | |
117 | #define CSISR_DRDY (1 << 0) | |
118 | ||
119 | #define CSICR1 0x00 | |
120 | #define CSICR2 0x04 | |
121 | #define CSISR (cpu_is_mx27() ? 0x08 : 0x18) | |
122 | #define CSISTATFIFO 0x0c | |
123 | #define CSIRFIFO 0x10 | |
124 | #define CSIRXCNT 0x14 | |
125 | #define CSICR3 (cpu_is_mx27() ? 0x1C : 0x08) | |
126 | #define CSIDMASA_STATFIFO 0x20 | |
127 | #define CSIDMATA_STATFIFO 0x24 | |
128 | #define CSIDMASA_FB1 0x28 | |
129 | #define CSIDMASA_FB2 0x2c | |
130 | #define CSIFBUF_PARA 0x30 | |
131 | #define CSIIMAG_PARA 0x34 | |
132 | ||
133 | /* EMMA PrP */ | |
134 | #define PRP_CNTL 0x00 | |
135 | #define PRP_INTR_CNTL 0x04 | |
136 | #define PRP_INTRSTATUS 0x08 | |
137 | #define PRP_SOURCE_Y_PTR 0x0c | |
138 | #define PRP_SOURCE_CB_PTR 0x10 | |
139 | #define PRP_SOURCE_CR_PTR 0x14 | |
140 | #define PRP_DEST_RGB1_PTR 0x18 | |
141 | #define PRP_DEST_RGB2_PTR 0x1c | |
142 | #define PRP_DEST_Y_PTR 0x20 | |
143 | #define PRP_DEST_CB_PTR 0x24 | |
144 | #define PRP_DEST_CR_PTR 0x28 | |
145 | #define PRP_SRC_FRAME_SIZE 0x2c | |
146 | #define PRP_DEST_CH1_LINE_STRIDE 0x30 | |
147 | #define PRP_SRC_PIXEL_FORMAT_CNTL 0x34 | |
148 | #define PRP_CH1_PIXEL_FORMAT_CNTL 0x38 | |
149 | #define PRP_CH1_OUT_IMAGE_SIZE 0x3c | |
150 | #define PRP_CH2_OUT_IMAGE_SIZE 0x40 | |
151 | #define PRP_SRC_LINE_STRIDE 0x44 | |
152 | #define PRP_CSC_COEF_012 0x48 | |
153 | #define PRP_CSC_COEF_345 0x4c | |
154 | #define PRP_CSC_COEF_678 0x50 | |
155 | #define PRP_CH1_RZ_HORI_COEF1 0x54 | |
156 | #define PRP_CH1_RZ_HORI_COEF2 0x58 | |
157 | #define PRP_CH1_RZ_HORI_VALID 0x5c | |
158 | #define PRP_CH1_RZ_VERT_COEF1 0x60 | |
159 | #define PRP_CH1_RZ_VERT_COEF2 0x64 | |
160 | #define PRP_CH1_RZ_VERT_VALID 0x68 | |
161 | #define PRP_CH2_RZ_HORI_COEF1 0x6c | |
162 | #define PRP_CH2_RZ_HORI_COEF2 0x70 | |
163 | #define PRP_CH2_RZ_HORI_VALID 0x74 | |
164 | #define PRP_CH2_RZ_VERT_COEF1 0x78 | |
165 | #define PRP_CH2_RZ_VERT_COEF2 0x7c | |
166 | #define PRP_CH2_RZ_VERT_VALID 0x80 | |
167 | ||
168 | #define PRP_CNTL_CH1EN (1 << 0) | |
169 | #define PRP_CNTL_CH2EN (1 << 1) | |
170 | #define PRP_CNTL_CSIEN (1 << 2) | |
171 | #define PRP_CNTL_DATA_IN_YUV420 (0 << 3) | |
172 | #define PRP_CNTL_DATA_IN_YUV422 (1 << 3) | |
173 | #define PRP_CNTL_DATA_IN_RGB16 (2 << 3) | |
174 | #define PRP_CNTL_DATA_IN_RGB32 (3 << 3) | |
175 | #define PRP_CNTL_CH1_OUT_RGB8 (0 << 5) | |
176 | #define PRP_CNTL_CH1_OUT_RGB16 (1 << 5) | |
177 | #define PRP_CNTL_CH1_OUT_RGB32 (2 << 5) | |
178 | #define PRP_CNTL_CH1_OUT_YUV422 (3 << 5) | |
179 | #define PRP_CNTL_CH2_OUT_YUV420 (0 << 7) | |
180 | #define PRP_CNTL_CH2_OUT_YUV422 (1 << 7) | |
181 | #define PRP_CNTL_CH2_OUT_YUV444 (2 << 7) | |
182 | #define PRP_CNTL_CH1_LEN (1 << 9) | |
183 | #define PRP_CNTL_CH2_LEN (1 << 10) | |
184 | #define PRP_CNTL_SKIP_FRAME (1 << 11) | |
185 | #define PRP_CNTL_SWRST (1 << 12) | |
186 | #define PRP_CNTL_CLKEN (1 << 13) | |
187 | #define PRP_CNTL_WEN (1 << 14) | |
188 | #define PRP_CNTL_CH1BYP (1 << 15) | |
189 | #define PRP_CNTL_IN_TSKIP(x) ((x) << 16) | |
190 | #define PRP_CNTL_CH1_TSKIP(x) ((x) << 19) | |
191 | #define PRP_CNTL_CH2_TSKIP(x) ((x) << 22) | |
192 | #define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25) | |
193 | #define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27) | |
194 | #define PRP_CNTL_CH2B1EN (1 << 29) | |
195 | #define PRP_CNTL_CH2B2EN (1 << 30) | |
196 | #define PRP_CNTL_CH2FEN (1 << 31) | |
197 | ||
198 | /* IRQ Enable and status register */ | |
199 | #define PRP_INTR_RDERR (1 << 0) | |
200 | #define PRP_INTR_CH1WERR (1 << 1) | |
201 | #define PRP_INTR_CH2WERR (1 << 2) | |
202 | #define PRP_INTR_CH1FC (1 << 3) | |
203 | #define PRP_INTR_CH2FC (1 << 5) | |
204 | #define PRP_INTR_LBOVF (1 << 7) | |
205 | #define PRP_INTR_CH2OVF (1 << 8) | |
206 | ||
2066930d BS |
207 | #define MAX_VIDEO_MEM 16 |
208 | ||
f410991d JM |
209 | struct mx2_prp_cfg { |
210 | int channel; | |
211 | u32 in_fmt; | |
212 | u32 out_fmt; | |
213 | u32 src_pixel; | |
214 | u32 ch1_pixel; | |
215 | u32 irq_flags; | |
216 | }; | |
217 | ||
218 | /* prp configuration for a client-host fmt pair */ | |
219 | struct mx2_fmt_cfg { | |
220 | enum v4l2_mbus_pixelcode in_fmt; | |
221 | u32 out_fmt; | |
222 | struct mx2_prp_cfg cfg; | |
223 | }; | |
224 | ||
c6a41e32 JM |
225 | enum mx2_buffer_state { |
226 | MX2_STATE_QUEUED, | |
227 | MX2_STATE_ACTIVE, | |
228 | MX2_STATE_DONE, | |
229 | }; | |
230 | ||
231 | /* buffer for one video frame */ | |
232 | struct mx2_buffer { | |
233 | /* common v4l buffer stuff -- must be first */ | |
234 | struct vb2_buffer vb; | |
235 | struct list_head queue; | |
236 | enum mx2_buffer_state state; | |
237 | ||
cdc9d6f1 JM |
238 | int bufnum; |
239 | bool discard; | |
c6a41e32 JM |
240 | }; |
241 | ||
2066930d BS |
242 | struct mx2_camera_dev { |
243 | struct device *dev; | |
244 | struct soc_camera_host soc_host; | |
245 | struct soc_camera_device *icd; | |
246 | struct clk *clk_csi, *clk_emma; | |
247 | ||
248 | unsigned int irq_csi, irq_emma; | |
249 | void __iomem *base_csi, *base_emma; | |
250 | unsigned long base_dma; | |
251 | ||
252 | struct mx2_camera_platform_data *pdata; | |
253 | struct resource *res_csi, *res_emma; | |
254 | unsigned long platform_flags; | |
255 | ||
256 | struct list_head capture; | |
257 | struct list_head active_bufs; | |
cdc9d6f1 | 258 | struct list_head discard; |
2066930d BS |
259 | |
260 | spinlock_t lock; | |
261 | ||
262 | int dma; | |
263 | struct mx2_buffer *active; | |
264 | struct mx2_buffer *fb1_active; | |
265 | struct mx2_buffer *fb2_active; | |
266 | ||
2066930d BS |
267 | u32 csicr1; |
268 | ||
cdc9d6f1 | 269 | struct mx2_buffer buf_discard[2]; |
79d3c2c2 | 270 | void *discard_buffer; |
2066930d BS |
271 | dma_addr_t discard_buffer_dma; |
272 | size_t discard_size; | |
f410991d | 273 | struct mx2_fmt_cfg *emma_prp; |
ccd1a499 | 274 | u32 frame_count; |
c6a41e32 | 275 | struct vb2_alloc_ctx *alloc_ctx; |
2066930d BS |
276 | }; |
277 | ||
f410991d JM |
278 | static struct mx2_fmt_cfg mx27_emma_prp_table[] = { |
279 | /* | |
280 | * This is a generic configuration which is valid for most | |
281 | * prp input-output format combinations. | |
282 | * We set the incomming and outgoing pixelformat to a | |
283 | * 16 Bit wide format and adjust the bytesperline | |
284 | * accordingly. With this configuration the inputdata | |
285 | * will not be changed by the emma and could be any type | |
286 | * of 16 Bit Pixelformat. | |
287 | */ | |
288 | { | |
289 | .in_fmt = 0, | |
290 | .out_fmt = 0, | |
291 | .cfg = { | |
292 | .channel = 1, | |
293 | .in_fmt = PRP_CNTL_DATA_IN_RGB16, | |
294 | .out_fmt = PRP_CNTL_CH1_OUT_RGB16, | |
295 | .src_pixel = 0x2ca00565, /* RGB565 */ | |
296 | .ch1_pixel = 0x2ca00565, /* RGB565 */ | |
297 | .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | | |
298 | PRP_INTR_CH1FC | PRP_INTR_LBOVF, | |
299 | } | |
300 | }, | |
301 | { | |
302 | .in_fmt = V4L2_MBUS_FMT_YUYV8_2X8, | |
303 | .out_fmt = V4L2_PIX_FMT_YUV420, | |
304 | .cfg = { | |
305 | .channel = 2, | |
306 | .in_fmt = PRP_CNTL_DATA_IN_YUV422, | |
307 | .out_fmt = PRP_CNTL_CH2_OUT_YUV420, | |
308 | .src_pixel = 0x22000888, /* YUV422 (YUYV) */ | |
309 | .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | | |
310 | PRP_INTR_CH2FC | PRP_INTR_LBOVF | | |
311 | PRP_INTR_CH2OVF, | |
312 | } | |
313 | }, | |
314 | }; | |
315 | ||
316 | static struct mx2_fmt_cfg *mx27_emma_prp_get_format( | |
317 | enum v4l2_mbus_pixelcode in_fmt, | |
318 | u32 out_fmt) | |
319 | { | |
320 | int i; | |
321 | ||
322 | for (i = 1; i < ARRAY_SIZE(mx27_emma_prp_table); i++) | |
323 | if ((mx27_emma_prp_table[i].in_fmt == in_fmt) && | |
324 | (mx27_emma_prp_table[i].out_fmt == out_fmt)) { | |
325 | return &mx27_emma_prp_table[i]; | |
326 | } | |
327 | /* If no match return the most generic configuration */ | |
328 | return &mx27_emma_prp_table[0]; | |
329 | }; | |
330 | ||
cdc9d6f1 JM |
331 | static void mx27_update_emma_buf(struct mx2_camera_dev *pcdev, |
332 | unsigned long phys, int bufnum) | |
333 | { | |
334 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; | |
335 | ||
336 | if (prp->cfg.channel == 1) { | |
337 | writel(phys, pcdev->base_emma + | |
338 | PRP_DEST_RGB1_PTR + 4 * bufnum); | |
339 | } else { | |
340 | writel(phys, pcdev->base_emma + | |
341 | PRP_DEST_Y_PTR - 0x14 * bufnum); | |
342 | if (prp->out_fmt == V4L2_PIX_FMT_YUV420) { | |
343 | u32 imgsize = pcdev->icd->user_height * | |
344 | pcdev->icd->user_width; | |
345 | ||
346 | writel(phys + imgsize, pcdev->base_emma + | |
347 | PRP_DEST_CB_PTR - 0x14 * bufnum); | |
348 | writel(phys + ((5 * imgsize) / 4), pcdev->base_emma + | |
349 | PRP_DEST_CR_PTR - 0x14 * bufnum); | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
2066930d BS |
354 | static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev) |
355 | { | |
356 | unsigned long flags; | |
357 | ||
358 | clk_disable(pcdev->clk_csi); | |
359 | writel(0, pcdev->base_csi + CSICR1); | |
2c9ba37d | 360 | if (cpu_is_mx27()) { |
2066930d BS |
361 | writel(0, pcdev->base_emma + PRP_CNTL); |
362 | } else if (cpu_is_mx25()) { | |
363 | spin_lock_irqsave(&pcdev->lock, flags); | |
364 | pcdev->fb1_active = NULL; | |
365 | pcdev->fb2_active = NULL; | |
366 | writel(0, pcdev->base_csi + CSIDMASA_FB1); | |
367 | writel(0, pcdev->base_csi + CSIDMASA_FB2); | |
368 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
369 | } | |
370 | } | |
371 | ||
372 | /* | |
373 | * The following two functions absolutely depend on the fact, that | |
374 | * there can be only one camera on mx2 camera sensor interface | |
375 | */ | |
376 | static int mx2_camera_add_device(struct soc_camera_device *icd) | |
377 | { | |
7dfff953 | 378 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
379 | struct mx2_camera_dev *pcdev = ici->priv; |
380 | int ret; | |
381 | u32 csicr1; | |
382 | ||
383 | if (pcdev->icd) | |
384 | return -EBUSY; | |
385 | ||
386 | ret = clk_enable(pcdev->clk_csi); | |
387 | if (ret < 0) | |
388 | return ret; | |
389 | ||
390 | csicr1 = CSICR1_MCLKEN; | |
391 | ||
2c9ba37d | 392 | if (cpu_is_mx27()) { |
2066930d BS |
393 | csicr1 |= CSICR1_PRP_IF_EN | CSICR1_FCC | |
394 | CSICR1_RXFF_LEVEL(0); | |
395 | } else if (cpu_is_mx27()) | |
396 | csicr1 |= CSICR1_SOF_INTEN | CSICR1_RXFF_LEVEL(2); | |
397 | ||
398 | pcdev->csicr1 = csicr1; | |
399 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
400 | ||
401 | pcdev->icd = icd; | |
cdc9d6f1 | 402 | pcdev->frame_count = 0; |
2066930d | 403 | |
7dfff953 | 404 | dev_info(icd->parent, "Camera driver attached to camera %d\n", |
2066930d BS |
405 | icd->devnum); |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | static void mx2_camera_remove_device(struct soc_camera_device *icd) | |
411 | { | |
7dfff953 | 412 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
413 | struct mx2_camera_dev *pcdev = ici->priv; |
414 | ||
415 | BUG_ON(icd != pcdev->icd); | |
416 | ||
7dfff953 | 417 | dev_info(icd->parent, "Camera driver detached from camera %d\n", |
2066930d BS |
418 | icd->devnum); |
419 | ||
420 | mx2_camera_deactivate(pcdev); | |
421 | ||
2066930d BS |
422 | pcdev->icd = NULL; |
423 | } | |
424 | ||
2066930d BS |
425 | static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb, |
426 | int state) | |
427 | { | |
c6a41e32 | 428 | struct vb2_buffer *vb; |
2066930d BS |
429 | struct mx2_buffer *buf; |
430 | struct mx2_buffer **fb_active = fb == 1 ? &pcdev->fb1_active : | |
431 | &pcdev->fb2_active; | |
432 | u32 fb_reg = fb == 1 ? CSIDMASA_FB1 : CSIDMASA_FB2; | |
433 | unsigned long flags; | |
434 | ||
435 | spin_lock_irqsave(&pcdev->lock, flags); | |
436 | ||
5384a12b BS |
437 | if (*fb_active == NULL) |
438 | goto out; | |
439 | ||
2066930d | 440 | vb = &(*fb_active)->vb; |
c6a41e32 JM |
441 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
442 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
2066930d | 443 | |
c6a41e32 JM |
444 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
445 | vb->v4l2_buf.sequence++; | |
446 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
2066930d BS |
447 | |
448 | if (list_empty(&pcdev->capture)) { | |
449 | buf = NULL; | |
450 | writel(0, pcdev->base_csi + fb_reg); | |
451 | } else { | |
a654ba16 | 452 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, |
c6a41e32 | 453 | queue); |
2066930d | 454 | vb = &buf->vb; |
c6a41e32 JM |
455 | list_del(&buf->queue); |
456 | buf->state = MX2_STATE_ACTIVE; | |
457 | writel(vb2_dma_contig_plane_dma_addr(vb, 0), | |
458 | pcdev->base_csi + fb_reg); | |
2066930d BS |
459 | } |
460 | ||
461 | *fb_active = buf; | |
462 | ||
5384a12b | 463 | out: |
2066930d BS |
464 | spin_unlock_irqrestore(&pcdev->lock, flags); |
465 | } | |
466 | ||
467 | static irqreturn_t mx25_camera_irq(int irq_csi, void *data) | |
468 | { | |
469 | struct mx2_camera_dev *pcdev = data; | |
470 | u32 status = readl(pcdev->base_csi + CSISR); | |
471 | ||
472 | if (status & CSISR_DMA_TSF_FB1_INT) | |
c6a41e32 | 473 | mx25_camera_frame_done(pcdev, 1, MX2_STATE_DONE); |
2066930d | 474 | else if (status & CSISR_DMA_TSF_FB2_INT) |
c6a41e32 | 475 | mx25_camera_frame_done(pcdev, 2, MX2_STATE_DONE); |
2066930d BS |
476 | |
477 | /* FIXME: handle CSISR_RFF_OR_INT */ | |
478 | ||
479 | writel(status, pcdev->base_csi + CSISR); | |
480 | ||
481 | return IRQ_HANDLED; | |
482 | } | |
483 | ||
484 | /* | |
485 | * Videobuf operations | |
486 | */ | |
c6a41e32 JM |
487 | static int mx2_videobuf_setup(struct vb2_queue *vq, |
488 | const struct v4l2_format *fmt, | |
489 | unsigned int *count, unsigned int *num_planes, | |
490 | unsigned int sizes[], void *alloc_ctxs[]) | |
2066930d | 491 | { |
c6a41e32 JM |
492 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
493 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
494 | struct mx2_camera_dev *pcdev = ici->priv; | |
2066930d BS |
495 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
496 | icd->current_fmt->host_fmt); | |
497 | ||
c6a41e32 JM |
498 | dev_dbg(icd->parent, "count=%d, size=%d\n", *count, sizes[0]); |
499 | ||
500 | /* TODO: support for VIDIOC_CREATE_BUFS not ready */ | |
501 | if (fmt != NULL) | |
502 | return -ENOTTY; | |
2066930d BS |
503 | |
504 | if (bytes_per_line < 0) | |
505 | return bytes_per_line; | |
506 | ||
c6a41e32 JM |
507 | alloc_ctxs[0] = pcdev->alloc_ctx; |
508 | ||
509 | sizes[0] = bytes_per_line * icd->user_height; | |
2066930d BS |
510 | |
511 | if (0 == *count) | |
512 | *count = 32; | |
c6a41e32 JM |
513 | if (!*num_planes && |
514 | sizes[0] * *count > MAX_VIDEO_MEM * 1024 * 1024) | |
515 | *count = (MAX_VIDEO_MEM * 1024 * 1024) / sizes[0]; | |
2066930d | 516 | |
c6a41e32 | 517 | *num_planes = 1; |
2066930d | 518 | |
c6a41e32 | 519 | return 0; |
2066930d BS |
520 | } |
521 | ||
c6a41e32 | 522 | static int mx2_videobuf_prepare(struct vb2_buffer *vb) |
2066930d | 523 | { |
c6a41e32 | 524 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
2066930d BS |
525 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
526 | icd->current_fmt->host_fmt); | |
527 | int ret = 0; | |
528 | ||
c6a41e32 JM |
529 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
530 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
2066930d BS |
531 | |
532 | if (bytes_per_line < 0) | |
533 | return bytes_per_line; | |
534 | ||
535 | #ifdef DEBUG | |
536 | /* | |
537 | * This can be useful if you want to see if we actually fill | |
538 | * the buffer with something | |
539 | */ | |
c6a41e32 JM |
540 | memset((void *)vb2_plane_vaddr(vb, 0), |
541 | 0xaa, vb2_get_plane_payload(vb, 0)); | |
2066930d BS |
542 | #endif |
543 | ||
c6a41e32 JM |
544 | vb2_set_plane_payload(vb, 0, bytes_per_line * icd->user_height); |
545 | if (vb2_plane_vaddr(vb, 0) && | |
546 | vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) { | |
2066930d BS |
547 | ret = -EINVAL; |
548 | goto out; | |
549 | } | |
550 | ||
2066930d BS |
551 | return 0; |
552 | ||
2066930d BS |
553 | out: |
554 | return ret; | |
555 | } | |
556 | ||
c6a41e32 | 557 | static void mx2_videobuf_queue(struct vb2_buffer *vb) |
2066930d | 558 | { |
c6a41e32 | 559 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
2066930d | 560 | struct soc_camera_host *ici = |
7dfff953 | 561 | to_soc_camera_host(icd->parent); |
2066930d BS |
562 | struct mx2_camera_dev *pcdev = ici->priv; |
563 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); | |
564 | unsigned long flags; | |
565 | ||
c6a41e32 JM |
566 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
567 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
2066930d BS |
568 | |
569 | spin_lock_irqsave(&pcdev->lock, flags); | |
570 | ||
c6a41e32 JM |
571 | buf->state = MX2_STATE_QUEUED; |
572 | list_add_tail(&buf->queue, &pcdev->capture); | |
2066930d | 573 | |
2c9ba37d | 574 | if (cpu_is_mx25()) { |
2066930d BS |
575 | u32 csicr3, dma_inten = 0; |
576 | ||
577 | if (pcdev->fb1_active == NULL) { | |
c6a41e32 | 578 | writel(vb2_dma_contig_plane_dma_addr(vb, 0), |
2066930d BS |
579 | pcdev->base_csi + CSIDMASA_FB1); |
580 | pcdev->fb1_active = buf; | |
581 | dma_inten = CSICR1_FB1_DMA_INTEN; | |
582 | } else if (pcdev->fb2_active == NULL) { | |
c6a41e32 | 583 | writel(vb2_dma_contig_plane_dma_addr(vb, 0), |
2066930d BS |
584 | pcdev->base_csi + CSIDMASA_FB2); |
585 | pcdev->fb2_active = buf; | |
586 | dma_inten = CSICR1_FB2_DMA_INTEN; | |
587 | } | |
588 | ||
589 | if (dma_inten) { | |
c6a41e32 JM |
590 | list_del(&buf->queue); |
591 | buf->state = MX2_STATE_ACTIVE; | |
2066930d BS |
592 | |
593 | csicr3 = readl(pcdev->base_csi + CSICR3); | |
594 | ||
595 | /* Reflash DMA */ | |
596 | writel(csicr3 | CSICR3_DMA_REFLASH_RFF, | |
597 | pcdev->base_csi + CSICR3); | |
598 | ||
599 | /* clear & enable interrupts */ | |
600 | writel(dma_inten, pcdev->base_csi + CSISR); | |
601 | pcdev->csicr1 |= dma_inten; | |
602 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
603 | ||
604 | /* enable DMA */ | |
605 | csicr3 |= CSICR3_DMA_REQ_EN_RFF | CSICR3_RXFF_LEVEL(1); | |
606 | writel(csicr3, pcdev->base_csi + CSICR3); | |
607 | } | |
608 | } | |
609 | ||
2066930d BS |
610 | spin_unlock_irqrestore(&pcdev->lock, flags); |
611 | } | |
612 | ||
c6a41e32 | 613 | static void mx2_videobuf_release(struct vb2_buffer *vb) |
2066930d | 614 | { |
c6a41e32 | 615 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
7dfff953 | 616 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
617 | struct mx2_camera_dev *pcdev = ici->priv; |
618 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); | |
619 | unsigned long flags; | |
620 | ||
621 | #ifdef DEBUG | |
c6a41e32 JM |
622 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
623 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); | |
2066930d | 624 | |
c6a41e32 JM |
625 | switch (buf->state) { |
626 | case MX2_STATE_ACTIVE: | |
7dfff953 | 627 | dev_info(icd->parent, "%s (active)\n", __func__); |
2066930d | 628 | break; |
c6a41e32 | 629 | case MX2_STATE_QUEUED: |
7dfff953 | 630 | dev_info(icd->parent, "%s (queued)\n", __func__); |
2066930d | 631 | break; |
2066930d | 632 | default: |
7dfff953 | 633 | dev_info(icd->parent, "%s (unknown) %d\n", __func__, |
c6a41e32 | 634 | buf->state); |
2066930d BS |
635 | break; |
636 | } | |
637 | #endif | |
638 | ||
639 | /* | |
640 | * Terminate only queued but inactive buffers. Active buffers are | |
641 | * released when they become inactive after videobuf_waiton(). | |
642 | * | |
7c6b7319 BS |
643 | * FIXME: implement forced termination of active buffers for mx27 and |
644 | * mx27 eMMA, so that the user won't get stuck in an uninterruptible | |
645 | * state. This requires a specific handling for each of the these DMA | |
646 | * types. | |
2066930d | 647 | */ |
c6a41e32 | 648 | |
2066930d | 649 | spin_lock_irqsave(&pcdev->lock, flags); |
c6a41e32 | 650 | if (cpu_is_mx25() && buf->state == MX2_STATE_ACTIVE) { |
7c6b7319 BS |
651 | if (pcdev->fb1_active == buf) { |
652 | pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN; | |
653 | writel(0, pcdev->base_csi + CSIDMASA_FB1); | |
654 | pcdev->fb1_active = NULL; | |
655 | } else if (pcdev->fb2_active == buf) { | |
656 | pcdev->csicr1 &= ~CSICR1_FB2_DMA_INTEN; | |
657 | writel(0, pcdev->base_csi + CSIDMASA_FB2); | |
658 | pcdev->fb2_active = NULL; | |
659 | } | |
660 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
2066930d BS |
661 | } |
662 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
2066930d BS |
663 | } |
664 | ||
cdc9d6f1 JM |
665 | static void mx27_camera_emma_buf_init(struct soc_camera_device *icd, |
666 | int bytesperline) | |
667 | { | |
668 | struct soc_camera_host *ici = | |
669 | to_soc_camera_host(icd->parent); | |
670 | struct mx2_camera_dev *pcdev = ici->priv; | |
671 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; | |
672 | ||
673 | writel((icd->user_width << 16) | icd->user_height, | |
674 | pcdev->base_emma + PRP_SRC_FRAME_SIZE); | |
675 | writel(prp->cfg.src_pixel, | |
676 | pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL); | |
677 | if (prp->cfg.channel == 1) { | |
678 | writel((icd->user_width << 16) | icd->user_height, | |
679 | pcdev->base_emma + PRP_CH1_OUT_IMAGE_SIZE); | |
680 | writel(bytesperline, | |
681 | pcdev->base_emma + PRP_DEST_CH1_LINE_STRIDE); | |
682 | writel(prp->cfg.ch1_pixel, | |
683 | pcdev->base_emma + PRP_CH1_PIXEL_FORMAT_CNTL); | |
684 | } else { /* channel 2 */ | |
685 | writel((icd->user_width << 16) | icd->user_height, | |
686 | pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE); | |
687 | } | |
688 | ||
689 | /* Enable interrupts */ | |
690 | writel(prp->cfg.irq_flags, pcdev->base_emma + PRP_INTR_CNTL); | |
691 | } | |
692 | ||
fb51cbdd JM |
693 | static int mx2_start_streaming(struct vb2_queue *q, unsigned int count) |
694 | { | |
695 | struct soc_camera_device *icd = soc_camera_from_vb2q(q); | |
696 | struct soc_camera_host *ici = | |
697 | to_soc_camera_host(icd->parent); | |
698 | struct mx2_camera_dev *pcdev = ici->priv; | |
699 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; | |
cdc9d6f1 JM |
700 | struct vb2_buffer *vb; |
701 | struct mx2_buffer *buf; | |
702 | unsigned long phys; | |
703 | int bytesperline; | |
fb51cbdd JM |
704 | |
705 | if (cpu_is_mx27()) { | |
706 | unsigned long flags; | |
707 | if (count < 2) | |
708 | return -EINVAL; | |
709 | ||
710 | spin_lock_irqsave(&pcdev->lock, flags); | |
cdc9d6f1 | 711 | |
a654ba16 JM |
712 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, |
713 | queue); | |
cdc9d6f1 JM |
714 | buf->bufnum = 0; |
715 | vb = &buf->vb; | |
716 | buf->state = MX2_STATE_ACTIVE; | |
717 | ||
718 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); | |
719 | mx27_update_emma_buf(pcdev, phys, buf->bufnum); | |
720 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); | |
721 | ||
a654ba16 JM |
722 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, |
723 | queue); | |
cdc9d6f1 JM |
724 | buf->bufnum = 1; |
725 | vb = &buf->vb; | |
726 | buf->state = MX2_STATE_ACTIVE; | |
727 | ||
728 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); | |
729 | mx27_update_emma_buf(pcdev, phys, buf->bufnum); | |
730 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); | |
731 | ||
732 | bytesperline = soc_mbus_bytes_per_line(icd->user_width, | |
733 | icd->current_fmt->host_fmt); | |
734 | if (bytesperline < 0) | |
735 | return bytesperline; | |
736 | ||
737 | /* | |
738 | * I didn't manage to properly enable/disable the prp | |
739 | * on a per frame basis during running transfers, | |
740 | * thus we allocate a buffer here and use it to | |
741 | * discard frames when no buffer is available. | |
742 | * Feel free to work on this ;) | |
743 | */ | |
744 | pcdev->discard_size = icd->user_height * bytesperline; | |
745 | pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev, | |
746 | pcdev->discard_size, &pcdev->discard_buffer_dma, | |
747 | GFP_KERNEL); | |
748 | if (!pcdev->discard_buffer) | |
749 | return -ENOMEM; | |
750 | ||
751 | pcdev->buf_discard[0].discard = true; | |
752 | list_add_tail(&pcdev->buf_discard[0].queue, | |
753 | &pcdev->discard); | |
754 | ||
755 | pcdev->buf_discard[1].discard = true; | |
756 | list_add_tail(&pcdev->buf_discard[1].queue, | |
757 | &pcdev->discard); | |
758 | ||
759 | mx27_camera_emma_buf_init(icd, bytesperline); | |
760 | ||
fb51cbdd JM |
761 | if (prp->cfg.channel == 1) { |
762 | writel(PRP_CNTL_CH1EN | | |
763 | PRP_CNTL_CSIEN | | |
764 | prp->cfg.in_fmt | | |
765 | prp->cfg.out_fmt | | |
766 | PRP_CNTL_CH1_LEN | | |
767 | PRP_CNTL_CH1BYP | | |
768 | PRP_CNTL_CH1_TSKIP(0) | | |
769 | PRP_CNTL_IN_TSKIP(0), | |
770 | pcdev->base_emma + PRP_CNTL); | |
771 | } else { | |
772 | writel(PRP_CNTL_CH2EN | | |
773 | PRP_CNTL_CSIEN | | |
774 | prp->cfg.in_fmt | | |
775 | prp->cfg.out_fmt | | |
776 | PRP_CNTL_CH2_LEN | | |
777 | PRP_CNTL_CH2_TSKIP(0) | | |
778 | PRP_CNTL_IN_TSKIP(0), | |
779 | pcdev->base_emma + PRP_CNTL); | |
780 | } | |
781 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
782 | } | |
783 | ||
784 | return 0; | |
785 | } | |
786 | ||
787 | static int mx2_stop_streaming(struct vb2_queue *q) | |
788 | { | |
789 | struct soc_camera_device *icd = soc_camera_from_vb2q(q); | |
790 | struct soc_camera_host *ici = | |
791 | to_soc_camera_host(icd->parent); | |
792 | struct mx2_camera_dev *pcdev = ici->priv; | |
793 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; | |
794 | unsigned long flags; | |
cdc9d6f1 | 795 | void *b; |
fb51cbdd JM |
796 | u32 cntl; |
797 | ||
fb51cbdd | 798 | if (cpu_is_mx27()) { |
cdc9d6f1 JM |
799 | spin_lock_irqsave(&pcdev->lock, flags); |
800 | ||
fb51cbdd JM |
801 | cntl = readl(pcdev->base_emma + PRP_CNTL); |
802 | if (prp->cfg.channel == 1) { | |
803 | writel(cntl & ~PRP_CNTL_CH1EN, | |
804 | pcdev->base_emma + PRP_CNTL); | |
805 | } else { | |
806 | writel(cntl & ~PRP_CNTL_CH2EN, | |
807 | pcdev->base_emma + PRP_CNTL); | |
808 | } | |
cdc9d6f1 JM |
809 | INIT_LIST_HEAD(&pcdev->capture); |
810 | INIT_LIST_HEAD(&pcdev->active_bufs); | |
811 | INIT_LIST_HEAD(&pcdev->discard); | |
812 | ||
813 | b = pcdev->discard_buffer; | |
814 | pcdev->discard_buffer = NULL; | |
815 | ||
816 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
817 | ||
818 | dma_free_coherent(ici->v4l2_dev.dev, | |
819 | pcdev->discard_size, b, pcdev->discard_buffer_dma); | |
fb51cbdd | 820 | } |
fb51cbdd JM |
821 | |
822 | return 0; | |
823 | } | |
824 | ||
c6a41e32 | 825 | static struct vb2_ops mx2_videobuf_ops = { |
fb51cbdd JM |
826 | .queue_setup = mx2_videobuf_setup, |
827 | .buf_prepare = mx2_videobuf_prepare, | |
828 | .buf_queue = mx2_videobuf_queue, | |
829 | .buf_cleanup = mx2_videobuf_release, | |
830 | .start_streaming = mx2_start_streaming, | |
831 | .stop_streaming = mx2_stop_streaming, | |
2066930d BS |
832 | }; |
833 | ||
c6a41e32 | 834 | static int mx2_camera_init_videobuf(struct vb2_queue *q, |
2066930d BS |
835 | struct soc_camera_device *icd) |
836 | { | |
c6a41e32 JM |
837 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
838 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
839 | q->drv_priv = icd; | |
840 | q->ops = &mx2_videobuf_ops; | |
841 | q->mem_ops = &vb2_dma_contig_memops; | |
842 | q->buf_struct_size = sizeof(struct mx2_buffer); | |
843 | ||
844 | return vb2_queue_init(q); | |
2066930d BS |
845 | } |
846 | ||
db592a24 GL |
847 | #define MX2_BUS_FLAGS (V4L2_MBUS_MASTER | \ |
848 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
849 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
850 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
851 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
852 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
853 | V4L2_MBUS_PCLK_SAMPLE_FALLING | \ | |
854 | V4L2_MBUS_DATA_ACTIVE_HIGH | \ | |
855 | V4L2_MBUS_DATA_ACTIVE_LOW) | |
2066930d BS |
856 | |
857 | static int mx27_camera_emma_prp_reset(struct mx2_camera_dev *pcdev) | |
858 | { | |
859 | u32 cntl; | |
860 | int count = 0; | |
861 | ||
862 | cntl = readl(pcdev->base_emma + PRP_CNTL); | |
863 | writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL); | |
864 | while (count++ < 100) { | |
865 | if (!(readl(pcdev->base_emma + PRP_CNTL) & PRP_CNTL_SWRST)) | |
866 | return 0; | |
867 | barrier(); | |
868 | udelay(1); | |
869 | } | |
870 | ||
871 | return -ETIMEDOUT; | |
872 | } | |
873 | ||
8843d119 | 874 | static int mx2_camera_set_bus_param(struct soc_camera_device *icd) |
2066930d | 875 | { |
db592a24 GL |
876 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
877 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
2066930d | 878 | struct mx2_camera_dev *pcdev = ici->priv; |
db592a24 GL |
879 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
880 | unsigned long common_flags; | |
881 | int ret; | |
2066930d BS |
882 | int bytesperline; |
883 | u32 csicr1 = pcdev->csicr1; | |
884 | ||
db592a24 GL |
885 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
886 | if (!ret) { | |
887 | common_flags = soc_mbus_config_compatible(&cfg, MX2_BUS_FLAGS); | |
888 | if (!common_flags) { | |
889 | dev_warn(icd->parent, | |
890 | "Flags incompatible: camera 0x%x, host 0x%x\n", | |
891 | cfg.flags, MX2_BUS_FLAGS); | |
892 | return -EINVAL; | |
893 | } | |
894 | } else if (ret != -ENOIOCTLCMD) { | |
895 | return ret; | |
896 | } else { | |
897 | common_flags = MX2_BUS_FLAGS; | |
898 | } | |
2066930d | 899 | |
db592a24 GL |
900 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
901 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
2066930d | 902 | if (pcdev->platform_flags & MX2_CAMERA_HSYNC_HIGH) |
db592a24 | 903 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
2066930d | 904 | else |
db592a24 | 905 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
2066930d BS |
906 | } |
907 | ||
db592a24 GL |
908 | if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && |
909 | (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { | |
2066930d | 910 | if (pcdev->platform_flags & MX2_CAMERA_PCLK_SAMPLE_RISING) |
db592a24 | 911 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; |
2066930d | 912 | else |
db592a24 | 913 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; |
2066930d BS |
914 | } |
915 | ||
db592a24 GL |
916 | cfg.flags = common_flags; |
917 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
918 | if (ret < 0 && ret != -ENOIOCTLCMD) { | |
919 | dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n", | |
920 | common_flags, ret); | |
2066930d | 921 | return ret; |
db592a24 | 922 | } |
2066930d | 923 | |
db592a24 | 924 | if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) |
d86097e1 | 925 | csicr1 |= CSICR1_REDGE; |
db592a24 | 926 | if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) |
2066930d | 927 | csicr1 |= CSICR1_SOF_POL; |
db592a24 | 928 | if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) |
2066930d BS |
929 | csicr1 |= CSICR1_HSYNC_POL; |
930 | if (pcdev->platform_flags & MX2_CAMERA_SWAP16) | |
931 | csicr1 |= CSICR1_SWAP16_EN; | |
932 | if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC) | |
933 | csicr1 |= CSICR1_EXT_VSYNC; | |
934 | if (pcdev->platform_flags & MX2_CAMERA_CCIR) | |
935 | csicr1 |= CSICR1_CCIR_EN; | |
936 | if (pcdev->platform_flags & MX2_CAMERA_CCIR_INTERLACE) | |
937 | csicr1 |= CSICR1_CCIR_MODE; | |
938 | if (pcdev->platform_flags & MX2_CAMERA_GATED_CLOCK) | |
939 | csicr1 |= CSICR1_GCLK_MODE; | |
940 | if (pcdev->platform_flags & MX2_CAMERA_INV_DATA) | |
941 | csicr1 |= CSICR1_INV_DATA; | |
942 | if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB) | |
943 | csicr1 |= CSICR1_PACK_DIR; | |
944 | ||
945 | pcdev->csicr1 = csicr1; | |
946 | ||
947 | bytesperline = soc_mbus_bytes_per_line(icd->user_width, | |
948 | icd->current_fmt->host_fmt); | |
949 | if (bytesperline < 0) | |
950 | return bytesperline; | |
951 | ||
2c9ba37d | 952 | if (cpu_is_mx27()) { |
2066930d BS |
953 | ret = mx27_camera_emma_prp_reset(pcdev); |
954 | if (ret) | |
955 | return ret; | |
2066930d BS |
956 | } else if (cpu_is_mx25()) { |
957 | writel((bytesperline * icd->user_height) >> 2, | |
958 | pcdev->base_csi + CSIRXCNT); | |
959 | writel((bytesperline << 16) | icd->user_height, | |
960 | pcdev->base_csi + CSIIMAG_PARA); | |
961 | } | |
962 | ||
963 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
964 | ||
965 | return 0; | |
966 | } | |
967 | ||
968 | static int mx2_camera_set_crop(struct soc_camera_device *icd, | |
969 | struct v4l2_crop *a) | |
970 | { | |
971 | struct v4l2_rect *rect = &a->c; | |
972 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
973 | struct v4l2_mbus_framefmt mf; | |
974 | int ret; | |
975 | ||
976 | soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); | |
977 | soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); | |
978 | ||
979 | ret = v4l2_subdev_call(sd, video, s_crop, a); | |
980 | if (ret < 0) | |
981 | return ret; | |
982 | ||
983 | /* The capture device might have changed its output */ | |
984 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
985 | if (ret < 0) | |
986 | return ret; | |
987 | ||
7dfff953 | 988 | dev_dbg(icd->parent, "Sensor cropped %dx%d\n", |
2066930d BS |
989 | mf.width, mf.height); |
990 | ||
991 | icd->user_width = mf.width; | |
992 | icd->user_height = mf.height; | |
993 | ||
994 | return ret; | |
995 | } | |
996 | ||
f410991d JM |
997 | static int mx2_camera_get_formats(struct soc_camera_device *icd, |
998 | unsigned int idx, | |
999 | struct soc_camera_format_xlate *xlate) | |
1000 | { | |
1001 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1002 | const struct soc_mbus_pixelfmt *fmt; | |
1003 | struct device *dev = icd->parent; | |
1004 | enum v4l2_mbus_pixelcode code; | |
1005 | int ret, formats = 0; | |
1006 | ||
1007 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); | |
1008 | if (ret < 0) | |
1009 | /* no more formats */ | |
1010 | return 0; | |
1011 | ||
1012 | fmt = soc_mbus_get_fmtdesc(code); | |
1013 | if (!fmt) { | |
1014 | dev_err(dev, "Invalid format code #%u: %d\n", idx, code); | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | if (code == V4L2_MBUS_FMT_YUYV8_2X8) { | |
1019 | formats++; | |
1020 | if (xlate) { | |
1021 | /* | |
1022 | * CH2 can output YUV420 which is a standard format in | |
1023 | * soc_mediabus.c | |
1024 | */ | |
1025 | xlate->host_fmt = | |
1026 | soc_mbus_get_fmtdesc(V4L2_MBUS_FMT_YUYV8_1_5X8); | |
1027 | xlate->code = code; | |
1028 | dev_dbg(dev, "Providing host format %s for sensor code %d\n", | |
1029 | xlate->host_fmt->name, code); | |
1030 | xlate++; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* Generic pass-trough */ | |
1035 | formats++; | |
1036 | if (xlate) { | |
1037 | xlate->host_fmt = fmt; | |
1038 | xlate->code = code; | |
1039 | xlate++; | |
1040 | } | |
1041 | return formats; | |
1042 | } | |
1043 | ||
2066930d BS |
1044 | static int mx2_camera_set_fmt(struct soc_camera_device *icd, |
1045 | struct v4l2_format *f) | |
1046 | { | |
f410991d JM |
1047 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1048 | struct mx2_camera_dev *pcdev = ici->priv; | |
2066930d BS |
1049 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1050 | const struct soc_camera_format_xlate *xlate; | |
1051 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1052 | struct v4l2_mbus_framefmt mf; | |
1053 | int ret; | |
1054 | ||
1055 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); | |
1056 | if (!xlate) { | |
7dfff953 | 1057 | dev_warn(icd->parent, "Format %x not found\n", |
2066930d BS |
1058 | pix->pixelformat); |
1059 | return -EINVAL; | |
1060 | } | |
1061 | ||
2066930d BS |
1062 | mf.width = pix->width; |
1063 | mf.height = pix->height; | |
1064 | mf.field = pix->field; | |
1065 | mf.colorspace = pix->colorspace; | |
1066 | mf.code = xlate->code; | |
1067 | ||
1068 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); | |
1069 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
1070 | return ret; | |
1071 | ||
1072 | if (mf.code != xlate->code) | |
1073 | return -EINVAL; | |
1074 | ||
1075 | pix->width = mf.width; | |
1076 | pix->height = mf.height; | |
1077 | pix->field = mf.field; | |
1078 | pix->colorspace = mf.colorspace; | |
1079 | icd->current_fmt = xlate; | |
1080 | ||
2c9ba37d | 1081 | if (cpu_is_mx27()) |
f410991d JM |
1082 | pcdev->emma_prp = mx27_emma_prp_get_format(xlate->code, |
1083 | xlate->host_fmt->fourcc); | |
1084 | ||
2066930d BS |
1085 | return 0; |
1086 | } | |
1087 | ||
1088 | static int mx2_camera_try_fmt(struct soc_camera_device *icd, | |
1089 | struct v4l2_format *f) | |
1090 | { | |
2066930d BS |
1091 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1092 | const struct soc_camera_format_xlate *xlate; | |
1093 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1094 | struct v4l2_mbus_framefmt mf; | |
1095 | __u32 pixfmt = pix->pixelformat; | |
1096 | unsigned int width_limit; | |
1097 | int ret; | |
1098 | ||
1099 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1100 | if (pixfmt && !xlate) { | |
7dfff953 | 1101 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
2066930d BS |
1102 | return -EINVAL; |
1103 | } | |
1104 | ||
1105 | /* FIXME: implement MX27 limits */ | |
1106 | ||
2066930d BS |
1107 | /* limit to MX25 hardware capabilities */ |
1108 | if (cpu_is_mx25()) { | |
1109 | if (xlate->host_fmt->bits_per_sample <= 8) | |
1110 | width_limit = 0xffff * 4; | |
1111 | else | |
1112 | width_limit = 0xffff * 2; | |
1113 | /* CSIIMAG_PARA limit */ | |
1114 | if (pix->width > width_limit) | |
1115 | pix->width = width_limit; | |
1116 | if (pix->height > 0xffff) | |
1117 | pix->height = 0xffff; | |
1118 | ||
1119 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, | |
1120 | xlate->host_fmt); | |
1121 | if (pix->bytesperline < 0) | |
1122 | return pix->bytesperline; | |
1123 | pix->sizeimage = pix->height * pix->bytesperline; | |
28281a71 GL |
1124 | /* Check against the CSIRXCNT limit */ |
1125 | if (pix->sizeimage > 4 * 0x3ffff) { | |
1126 | /* Adjust geometry, preserve aspect ratio */ | |
1127 | unsigned int new_height = int_sqrt(4 * 0x3ffff * | |
1128 | pix->height / pix->bytesperline); | |
1129 | pix->width = new_height * pix->width / pix->height; | |
1130 | pix->height = new_height; | |
1131 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, | |
1132 | xlate->host_fmt); | |
1133 | BUG_ON(pix->bytesperline < 0); | |
2066930d BS |
1134 | } |
1135 | } | |
1136 | ||
1137 | /* limit to sensor capabilities */ | |
1138 | mf.width = pix->width; | |
1139 | mf.height = pix->height; | |
1140 | mf.field = pix->field; | |
1141 | mf.colorspace = pix->colorspace; | |
1142 | mf.code = xlate->code; | |
1143 | ||
1144 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
1145 | if (ret < 0) | |
1146 | return ret; | |
1147 | ||
1148 | if (mf.field == V4L2_FIELD_ANY) | |
1149 | mf.field = V4L2_FIELD_NONE; | |
f410991d JM |
1150 | /* |
1151 | * Driver supports interlaced images provided they have | |
1152 | * both fields so that they can be processed as if they | |
1153 | * were progressive. | |
1154 | */ | |
1155 | if (mf.field != V4L2_FIELD_NONE && !V4L2_FIELD_HAS_BOTH(mf.field)) { | |
7dfff953 | 1156 | dev_err(icd->parent, "Field type %d unsupported.\n", |
2066930d BS |
1157 | mf.field); |
1158 | return -EINVAL; | |
1159 | } | |
1160 | ||
1161 | pix->width = mf.width; | |
1162 | pix->height = mf.height; | |
1163 | pix->field = mf.field; | |
1164 | pix->colorspace = mf.colorspace; | |
1165 | ||
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | static int mx2_camera_querycap(struct soc_camera_host *ici, | |
1170 | struct v4l2_capability *cap) | |
1171 | { | |
1172 | /* cap->name is set by the friendly caller:-> */ | |
1173 | strlcpy(cap->card, MX2_CAM_DRIVER_DESCRIPTION, sizeof(cap->card)); | |
2066930d BS |
1174 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
1175 | ||
1176 | return 0; | |
1177 | } | |
1178 | ||
2066930d BS |
1179 | static unsigned int mx2_camera_poll(struct file *file, poll_table *pt) |
1180 | { | |
6b101926 | 1181 | struct soc_camera_device *icd = file->private_data; |
2066930d | 1182 | |
c6a41e32 | 1183 | return vb2_poll(&icd->vb2_vidq, file, pt); |
2066930d BS |
1184 | } |
1185 | ||
1186 | static struct soc_camera_host_ops mx2_soc_camera_host_ops = { | |
1187 | .owner = THIS_MODULE, | |
1188 | .add = mx2_camera_add_device, | |
1189 | .remove = mx2_camera_remove_device, | |
1190 | .set_fmt = mx2_camera_set_fmt, | |
1191 | .set_crop = mx2_camera_set_crop, | |
f410991d | 1192 | .get_formats = mx2_camera_get_formats, |
2066930d | 1193 | .try_fmt = mx2_camera_try_fmt, |
c6a41e32 | 1194 | .init_videobuf2 = mx2_camera_init_videobuf, |
2066930d BS |
1195 | .poll = mx2_camera_poll, |
1196 | .querycap = mx2_camera_querycap, | |
1197 | .set_bus_param = mx2_camera_set_bus_param, | |
1198 | }; | |
1199 | ||
1200 | static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev, | |
d84279e6 | 1201 | int bufnum, bool err) |
2066930d | 1202 | { |
8886a881 | 1203 | #ifdef DEBUG |
f410991d | 1204 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
8886a881 | 1205 | #endif |
2066930d | 1206 | struct mx2_buffer *buf; |
c6a41e32 | 1207 | struct vb2_buffer *vb; |
2066930d BS |
1208 | unsigned long phys; |
1209 | ||
a654ba16 | 1210 | buf = list_first_entry(&pcdev->active_bufs, struct mx2_buffer, queue); |
2066930d | 1211 | |
cdc9d6f1 | 1212 | BUG_ON(buf->bufnum != bufnum); |
2066930d | 1213 | |
cdc9d6f1 JM |
1214 | if (buf->discard) { |
1215 | /* | |
1216 | * Discard buffer must not be returned to user space. | |
1217 | * Just return it to the discard queue. | |
1218 | */ | |
1219 | list_move_tail(pcdev->active_bufs.next, &pcdev->discard); | |
1220 | } else { | |
2066930d BS |
1221 | vb = &buf->vb; |
1222 | #ifdef DEBUG | |
c6a41e32 | 1223 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); |
f410991d JM |
1224 | if (prp->cfg.channel == 1) { |
1225 | if (readl(pcdev->base_emma + PRP_DEST_RGB1_PTR + | |
1226 | 4 * bufnum) != phys) { | |
8886a881 JM |
1227 | dev_err(pcdev->dev, "%lx != %x\n", phys, |
1228 | readl(pcdev->base_emma + | |
1229 | PRP_DEST_RGB1_PTR + 4 * bufnum)); | |
f410991d JM |
1230 | } |
1231 | } else { | |
1232 | if (readl(pcdev->base_emma + PRP_DEST_Y_PTR - | |
1233 | 0x14 * bufnum) != phys) { | |
8886a881 JM |
1234 | dev_err(pcdev->dev, "%lx != %x\n", phys, |
1235 | readl(pcdev->base_emma + | |
1236 | PRP_DEST_Y_PTR - 0x14 * bufnum)); | |
f410991d | 1237 | } |
2066930d BS |
1238 | } |
1239 | #endif | |
c6a41e32 JM |
1240 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__, vb, |
1241 | vb2_plane_vaddr(vb, 0), | |
1242 | vb2_get_plane_payload(vb, 0)); | |
2066930d | 1243 | |
c6a41e32 JM |
1244 | list_del_init(&buf->queue); |
1245 | do_gettimeofday(&vb->v4l2_buf.timestamp); | |
c6a41e32 | 1246 | vb->v4l2_buf.sequence = pcdev->frame_count; |
d84279e6 JM |
1247 | if (err) |
1248 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
1249 | else | |
1250 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); | |
2066930d BS |
1251 | } |
1252 | ||
fb51cbdd JM |
1253 | pcdev->frame_count++; |
1254 | ||
2066930d | 1255 | if (list_empty(&pcdev->capture)) { |
cdc9d6f1 JM |
1256 | if (list_empty(&pcdev->discard)) { |
1257 | dev_warn(pcdev->dev, "%s: trying to access empty discard list\n", | |
1258 | __func__); | |
1259 | return; | |
f410991d | 1260 | } |
cdc9d6f1 | 1261 | |
a654ba16 JM |
1262 | buf = list_first_entry(&pcdev->discard, struct mx2_buffer, |
1263 | queue); | |
cdc9d6f1 JM |
1264 | buf->bufnum = bufnum; |
1265 | ||
1266 | list_move_tail(pcdev->discard.next, &pcdev->active_bufs); | |
1267 | mx27_update_emma_buf(pcdev, pcdev->discard_buffer_dma, bufnum); | |
2066930d BS |
1268 | return; |
1269 | } | |
1270 | ||
a654ba16 | 1271 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, queue); |
2066930d | 1272 | |
cdc9d6f1 | 1273 | buf->bufnum = bufnum; |
2066930d BS |
1274 | |
1275 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); | |
1276 | ||
1277 | vb = &buf->vb; | |
c6a41e32 | 1278 | buf->state = MX2_STATE_ACTIVE; |
2066930d | 1279 | |
c6a41e32 | 1280 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); |
cdc9d6f1 | 1281 | mx27_update_emma_buf(pcdev, phys, bufnum); |
2066930d BS |
1282 | } |
1283 | ||
1284 | static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data) | |
1285 | { | |
1286 | struct mx2_camera_dev *pcdev = data; | |
1287 | unsigned int status = readl(pcdev->base_emma + PRP_INTRSTATUS); | |
1288 | struct mx2_buffer *buf; | |
cdc9d6f1 | 1289 | |
8636ead8 | 1290 | spin_lock(&pcdev->lock); |
cdc9d6f1 JM |
1291 | |
1292 | if (list_empty(&pcdev->active_bufs)) { | |
1293 | dev_warn(pcdev->dev, "%s: called while active list is empty\n", | |
1294 | __func__); | |
665ad8af JM |
1295 | |
1296 | if (!status) { | |
1297 | spin_unlock(&pcdev->lock); | |
1298 | return IRQ_NONE; | |
1299 | } | |
cdc9d6f1 | 1300 | } |
2066930d BS |
1301 | |
1302 | if (status & (1 << 7)) { /* overflow */ | |
d84279e6 | 1303 | u32 cntl = readl(pcdev->base_emma + PRP_CNTL); |
f410991d JM |
1304 | writel(cntl & ~(PRP_CNTL_CH1EN | PRP_CNTL_CH2EN), |
1305 | pcdev->base_emma + PRP_CNTL); | |
2066930d | 1306 | writel(cntl, pcdev->base_emma + PRP_CNTL); |
d84279e6 | 1307 | |
a654ba16 | 1308 | buf = list_first_entry(&pcdev->active_bufs, |
d84279e6 JM |
1309 | struct mx2_buffer, queue); |
1310 | mx27_camera_frame_done_emma(pcdev, | |
1311 | buf->bufnum, true); | |
1312 | ||
1313 | status &= ~(1 << 7); | |
1314 | } else if (((status & (3 << 5)) == (3 << 5)) || | |
cdc9d6f1 | 1315 | ((status & (3 << 3)) == (3 << 3))) { |
2066930d BS |
1316 | /* |
1317 | * Both buffers have triggered, process the one we're expecting | |
1318 | * to first | |
1319 | */ | |
a654ba16 JM |
1320 | buf = list_first_entry(&pcdev->active_bufs, struct mx2_buffer, |
1321 | queue); | |
d84279e6 | 1322 | mx27_camera_frame_done_emma(pcdev, buf->bufnum, false); |
2066930d | 1323 | status &= ~(1 << (6 - buf->bufnum)); /* mark processed */ |
d84279e6 JM |
1324 | } else if ((status & (1 << 6)) || (status & (1 << 4))) { |
1325 | mx27_camera_frame_done_emma(pcdev, 0, false); | |
1326 | } else if ((status & (1 << 5)) || (status & (1 << 3))) { | |
1327 | mx27_camera_frame_done_emma(pcdev, 1, false); | |
2066930d | 1328 | } |
2066930d | 1329 | |
8636ead8 | 1330 | spin_unlock(&pcdev->lock); |
2066930d BS |
1331 | writel(status, pcdev->base_emma + PRP_INTRSTATUS); |
1332 | ||
1333 | return IRQ_HANDLED; | |
1334 | } | |
1335 | ||
1336 | static int __devinit mx27_camera_emma_init(struct mx2_camera_dev *pcdev) | |
1337 | { | |
1338 | struct resource *res_emma = pcdev->res_emma; | |
1339 | int err = 0; | |
1340 | ||
1341 | if (!request_mem_region(res_emma->start, resource_size(res_emma), | |
1342 | MX2_CAM_DRV_NAME)) { | |
1343 | err = -EBUSY; | |
1344 | goto out; | |
1345 | } | |
1346 | ||
1347 | pcdev->base_emma = ioremap(res_emma->start, resource_size(res_emma)); | |
1348 | if (!pcdev->base_emma) { | |
1349 | err = -ENOMEM; | |
1350 | goto exit_release; | |
1351 | } | |
1352 | ||
1353 | err = request_irq(pcdev->irq_emma, mx27_camera_emma_irq, 0, | |
1354 | MX2_CAM_DRV_NAME, pcdev); | |
1355 | if (err) { | |
1356 | dev_err(pcdev->dev, "Camera EMMA interrupt register failed \n"); | |
1357 | goto exit_iounmap; | |
1358 | } | |
1359 | ||
1360 | pcdev->clk_emma = clk_get(NULL, "emma"); | |
1361 | if (IS_ERR(pcdev->clk_emma)) { | |
1362 | err = PTR_ERR(pcdev->clk_emma); | |
1363 | goto exit_free_irq; | |
1364 | } | |
1365 | ||
1366 | clk_enable(pcdev->clk_emma); | |
1367 | ||
1368 | err = mx27_camera_emma_prp_reset(pcdev); | |
1369 | if (err) | |
1370 | goto exit_clk_emma_put; | |
1371 | ||
1372 | return err; | |
1373 | ||
1374 | exit_clk_emma_put: | |
1375 | clk_disable(pcdev->clk_emma); | |
1376 | clk_put(pcdev->clk_emma); | |
1377 | exit_free_irq: | |
1378 | free_irq(pcdev->irq_emma, pcdev); | |
1379 | exit_iounmap: | |
1380 | iounmap(pcdev->base_emma); | |
1381 | exit_release: | |
1382 | release_mem_region(res_emma->start, resource_size(res_emma)); | |
1383 | out: | |
1384 | return err; | |
1385 | } | |
1386 | ||
1387 | static int __devinit mx2_camera_probe(struct platform_device *pdev) | |
1388 | { | |
1389 | struct mx2_camera_dev *pcdev; | |
1390 | struct resource *res_csi, *res_emma; | |
1391 | void __iomem *base_csi; | |
1392 | int irq_csi, irq_emma; | |
2066930d BS |
1393 | int err = 0; |
1394 | ||
1395 | dev_dbg(&pdev->dev, "initialising\n"); | |
1396 | ||
1397 | res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1398 | irq_csi = platform_get_irq(pdev, 0); | |
1399 | if (res_csi == NULL || irq_csi < 0) { | |
1400 | dev_err(&pdev->dev, "Missing platform resources data\n"); | |
1401 | err = -ENODEV; | |
1402 | goto exit; | |
1403 | } | |
1404 | ||
1405 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1406 | if (!pcdev) { | |
1407 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1408 | err = -ENOMEM; | |
1409 | goto exit; | |
1410 | } | |
1411 | ||
1412 | pcdev->clk_csi = clk_get(&pdev->dev, NULL); | |
1413 | if (IS_ERR(pcdev->clk_csi)) { | |
1414 | err = PTR_ERR(pcdev->clk_csi); | |
1415 | goto exit_kfree; | |
1416 | } | |
1417 | ||
1418 | dev_dbg(&pdev->dev, "Camera clock frequency: %ld\n", | |
1419 | clk_get_rate(pcdev->clk_csi)); | |
1420 | ||
2066930d BS |
1421 | pcdev->res_csi = res_csi; |
1422 | pcdev->pdata = pdev->dev.platform_data; | |
1423 | if (pcdev->pdata) { | |
1424 | long rate; | |
1425 | ||
1426 | pcdev->platform_flags = pcdev->pdata->flags; | |
1427 | ||
1428 | rate = clk_round_rate(pcdev->clk_csi, pcdev->pdata->clk * 2); | |
1429 | if (rate <= 0) { | |
1430 | err = -ENODEV; | |
1431 | goto exit_dma_free; | |
1432 | } | |
1433 | err = clk_set_rate(pcdev->clk_csi, rate); | |
1434 | if (err < 0) | |
1435 | goto exit_dma_free; | |
1436 | } | |
1437 | ||
1438 | INIT_LIST_HEAD(&pcdev->capture); | |
1439 | INIT_LIST_HEAD(&pcdev->active_bufs); | |
cdc9d6f1 | 1440 | INIT_LIST_HEAD(&pcdev->discard); |
2066930d BS |
1441 | spin_lock_init(&pcdev->lock); |
1442 | ||
1443 | /* | |
1444 | * Request the regions. | |
1445 | */ | |
1446 | if (!request_mem_region(res_csi->start, resource_size(res_csi), | |
1447 | MX2_CAM_DRV_NAME)) { | |
1448 | err = -EBUSY; | |
1449 | goto exit_dma_free; | |
1450 | } | |
1451 | ||
1452 | base_csi = ioremap(res_csi->start, resource_size(res_csi)); | |
1453 | if (!base_csi) { | |
1454 | err = -ENOMEM; | |
1455 | goto exit_release; | |
1456 | } | |
1457 | pcdev->irq_csi = irq_csi; | |
1458 | pcdev->base_csi = base_csi; | |
1459 | pcdev->base_dma = res_csi->start; | |
1460 | pcdev->dev = &pdev->dev; | |
1461 | ||
2c9ba37d SH |
1462 | if (cpu_is_mx25()) { |
1463 | err = request_irq(pcdev->irq_csi, mx25_camera_irq, 0, | |
1464 | MX2_CAM_DRV_NAME, pcdev); | |
1465 | if (err) { | |
1466 | dev_err(pcdev->dev, "Camera interrupt register failed \n"); | |
1467 | goto exit_iounmap; | |
1468 | } | |
2066930d BS |
1469 | } |
1470 | ||
1471 | if (cpu_is_mx27()) { | |
1472 | /* EMMA support */ | |
1473 | res_emma = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1474 | irq_emma = platform_get_irq(pdev, 1); | |
1475 | ||
2c9ba37d SH |
1476 | if (!res_emma || !irq_emma) { |
1477 | dev_err(&pdev->dev, "no EMMA resources\n"); | |
1478 | goto exit_free_irq; | |
2066930d | 1479 | } |
2c9ba37d SH |
1480 | |
1481 | pcdev->res_emma = res_emma; | |
1482 | pcdev->irq_emma = irq_emma; | |
1483 | if (mx27_camera_emma_init(pcdev)) | |
1484 | goto exit_free_irq; | |
2066930d BS |
1485 | } |
1486 | ||
1487 | pcdev->soc_host.drv_name = MX2_CAM_DRV_NAME, | |
1488 | pcdev->soc_host.ops = &mx2_soc_camera_host_ops, | |
1489 | pcdev->soc_host.priv = pcdev; | |
1490 | pcdev->soc_host.v4l2_dev.dev = &pdev->dev; | |
1491 | pcdev->soc_host.nr = pdev->id; | |
c6a41e32 JM |
1492 | |
1493 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); | |
1494 | if (IS_ERR(pcdev->alloc_ctx)) { | |
1495 | err = PTR_ERR(pcdev->alloc_ctx); | |
1496 | goto eallocctx; | |
1497 | } | |
2066930d BS |
1498 | err = soc_camera_host_register(&pcdev->soc_host); |
1499 | if (err) | |
1500 | goto exit_free_emma; | |
1501 | ||
45f4d4e8 MG |
1502 | dev_info(&pdev->dev, "MX2 Camera (CSI) driver probed, clock frequency: %ld\n", |
1503 | clk_get_rate(pcdev->clk_csi)); | |
1504 | ||
2066930d BS |
1505 | return 0; |
1506 | ||
1507 | exit_free_emma: | |
c6a41e32 JM |
1508 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
1509 | eallocctx: | |
2c9ba37d | 1510 | if (cpu_is_mx27()) { |
2066930d BS |
1511 | free_irq(pcdev->irq_emma, pcdev); |
1512 | clk_disable(pcdev->clk_emma); | |
1513 | clk_put(pcdev->clk_emma); | |
1514 | iounmap(pcdev->base_emma); | |
2c9ba37d | 1515 | release_mem_region(pcdev->res_emma->start, resource_size(pcdev->res_emma)); |
2066930d BS |
1516 | } |
1517 | exit_free_irq: | |
2c9ba37d SH |
1518 | if (cpu_is_mx25()) |
1519 | free_irq(pcdev->irq_csi, pcdev); | |
2066930d BS |
1520 | exit_iounmap: |
1521 | iounmap(base_csi); | |
1522 | exit_release: | |
1523 | release_mem_region(res_csi->start, resource_size(res_csi)); | |
1524 | exit_dma_free: | |
2066930d | 1525 | clk_put(pcdev->clk_csi); |
2066930d BS |
1526 | exit_kfree: |
1527 | kfree(pcdev); | |
1528 | exit: | |
1529 | return err; | |
1530 | } | |
1531 | ||
1532 | static int __devexit mx2_camera_remove(struct platform_device *pdev) | |
1533 | { | |
1534 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); | |
1535 | struct mx2_camera_dev *pcdev = container_of(soc_host, | |
1536 | struct mx2_camera_dev, soc_host); | |
1537 | struct resource *res; | |
1538 | ||
1539 | clk_put(pcdev->clk_csi); | |
2c9ba37d SH |
1540 | if (cpu_is_mx25()) |
1541 | free_irq(pcdev->irq_csi, pcdev); | |
2066930d | 1542 | if (cpu_is_mx27()) |
2066930d BS |
1543 | free_irq(pcdev->irq_emma, pcdev); |
1544 | ||
1545 | soc_camera_host_unregister(&pcdev->soc_host); | |
1546 | ||
c6a41e32 JM |
1547 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
1548 | ||
2066930d BS |
1549 | iounmap(pcdev->base_csi); |
1550 | ||
2c9ba37d | 1551 | if (cpu_is_mx27()) { |
2066930d BS |
1552 | clk_disable(pcdev->clk_emma); |
1553 | clk_put(pcdev->clk_emma); | |
1554 | iounmap(pcdev->base_emma); | |
1555 | res = pcdev->res_emma; | |
1556 | release_mem_region(res->start, resource_size(res)); | |
1557 | } | |
1558 | ||
1559 | res = pcdev->res_csi; | |
1560 | release_mem_region(res->start, resource_size(res)); | |
1561 | ||
1562 | kfree(pcdev); | |
1563 | ||
1564 | dev_info(&pdev->dev, "MX2 Camera driver unloaded\n"); | |
1565 | ||
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | static struct platform_driver mx2_camera_driver = { | |
1570 | .driver = { | |
1571 | .name = MX2_CAM_DRV_NAME, | |
1572 | }, | |
1573 | .remove = __devexit_p(mx2_camera_remove), | |
1574 | }; | |
1575 | ||
1576 | ||
1577 | static int __init mx2_camera_init(void) | |
1578 | { | |
1579 | return platform_driver_probe(&mx2_camera_driver, &mx2_camera_probe); | |
1580 | } | |
1581 | ||
1582 | static void __exit mx2_camera_exit(void) | |
1583 | { | |
1584 | return platform_driver_unregister(&mx2_camera_driver); | |
1585 | } | |
1586 | ||
1587 | module_init(mx2_camera_init); | |
1588 | module_exit(mx2_camera_exit); | |
1589 | ||
1590 | MODULE_DESCRIPTION("i.MX27/i.MX25 SoC Camera Host driver"); | |
1591 | MODULE_AUTHOR("Sascha Hauer <sha@pengutronix.de>"); | |
1592 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 1593 | MODULE_VERSION(MX2_CAM_VERSION); |