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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 | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/dma-mapping.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/fs.h> | |
21 | #include <linux/interrupt.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/moduleparam.h> | |
25 | #include <linux/time.h> | |
2066930d BS |
26 | #include <linux/device.h> |
27 | #include <linux/platform_device.h> | |
28 | #include <linux/mutex.h> | |
29 | #include <linux/clk.h> | |
30 | ||
31 | #include <media/v4l2-common.h> | |
32 | #include <media/v4l2-dev.h> | |
6b101926 | 33 | #include <media/videobuf-core.h> |
2066930d BS |
34 | #include <media/videobuf-dma-contig.h> |
35 | #include <media/soc_camera.h> | |
36 | #include <media/soc_mediabus.h> | |
37 | ||
38 | #include <linux/videodev2.h> | |
39 | ||
40 | #include <mach/mx2_cam.h> | |
41 | #ifdef CONFIG_MACH_MX27 | |
42 | #include <mach/dma-mx1-mx2.h> | |
43 | #endif | |
44 | #include <mach/hardware.h> | |
45 | ||
46 | #include <asm/dma.h> | |
47 | ||
48 | #define MX2_CAM_DRV_NAME "mx2-camera" | |
64dc3c1a | 49 | #define MX2_CAM_VERSION "0.0.6" |
2066930d BS |
50 | #define MX2_CAM_DRIVER_DESCRIPTION "i.MX2x_Camera" |
51 | ||
52 | /* reset values */ | |
53 | #define CSICR1_RESET_VAL 0x40000800 | |
54 | #define CSICR2_RESET_VAL 0x0 | |
55 | #define CSICR3_RESET_VAL 0x0 | |
56 | ||
57 | /* csi control reg 1 */ | |
58 | #define CSICR1_SWAP16_EN (1 << 31) | |
59 | #define CSICR1_EXT_VSYNC (1 << 30) | |
60 | #define CSICR1_EOF_INTEN (1 << 29) | |
61 | #define CSICR1_PRP_IF_EN (1 << 28) | |
62 | #define CSICR1_CCIR_MODE (1 << 27) | |
63 | #define CSICR1_COF_INTEN (1 << 26) | |
64 | #define CSICR1_SF_OR_INTEN (1 << 25) | |
65 | #define CSICR1_RF_OR_INTEN (1 << 24) | |
66 | #define CSICR1_STATFF_LEVEL (3 << 22) | |
67 | #define CSICR1_STATFF_INTEN (1 << 21) | |
68 | #define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) /* MX27 */ | |
69 | #define CSICR1_FB2_DMA_INTEN (1 << 20) /* MX25 */ | |
70 | #define CSICR1_FB1_DMA_INTEN (1 << 19) /* MX25 */ | |
71 | #define CSICR1_RXFF_INTEN (1 << 18) | |
72 | #define CSICR1_SOF_POL (1 << 17) | |
73 | #define CSICR1_SOF_INTEN (1 << 16) | |
74 | #define CSICR1_MCLKDIV(d) (((d) & 0xF) << 12) | |
75 | #define CSICR1_HSYNC_POL (1 << 11) | |
76 | #define CSICR1_CCIR_EN (1 << 10) | |
77 | #define CSICR1_MCLKEN (1 << 9) | |
78 | #define CSICR1_FCC (1 << 8) | |
79 | #define CSICR1_PACK_DIR (1 << 7) | |
80 | #define CSICR1_CLR_STATFIFO (1 << 6) | |
81 | #define CSICR1_CLR_RXFIFO (1 << 5) | |
82 | #define CSICR1_GCLK_MODE (1 << 4) | |
83 | #define CSICR1_INV_DATA (1 << 3) | |
84 | #define CSICR1_INV_PCLK (1 << 2) | |
85 | #define CSICR1_REDGE (1 << 1) | |
86 | ||
87 | #define SHIFT_STATFF_LEVEL 22 | |
88 | #define SHIFT_RXFF_LEVEL 19 | |
89 | #define SHIFT_MCLKDIV 12 | |
90 | ||
91 | /* control reg 3 */ | |
92 | #define CSICR3_FRMCNT (0xFFFF << 16) | |
93 | #define CSICR3_FRMCNT_RST (1 << 15) | |
94 | #define CSICR3_DMA_REFLASH_RFF (1 << 14) | |
95 | #define CSICR3_DMA_REFLASH_SFF (1 << 13) | |
96 | #define CSICR3_DMA_REQ_EN_RFF (1 << 12) | |
97 | #define CSICR3_DMA_REQ_EN_SFF (1 << 11) | |
98 | #define CSICR3_RXFF_LEVEL(l) (((l) & 7) << 4) /* MX25 */ | |
99 | #define CSICR3_CSI_SUP (1 << 3) | |
100 | #define CSICR3_ZERO_PACK_EN (1 << 2) | |
101 | #define CSICR3_ECC_INT_EN (1 << 1) | |
102 | #define CSICR3_ECC_AUTO_EN (1 << 0) | |
103 | ||
104 | #define SHIFT_FRMCNT 16 | |
105 | ||
106 | /* csi status reg */ | |
107 | #define CSISR_SFF_OR_INT (1 << 25) | |
108 | #define CSISR_RFF_OR_INT (1 << 24) | |
109 | #define CSISR_STATFF_INT (1 << 21) | |
110 | #define CSISR_DMA_TSF_FB2_INT (1 << 20) /* MX25 */ | |
111 | #define CSISR_DMA_TSF_FB1_INT (1 << 19) /* MX25 */ | |
112 | #define CSISR_RXFF_INT (1 << 18) | |
113 | #define CSISR_EOF_INT (1 << 17) | |
114 | #define CSISR_SOF_INT (1 << 16) | |
115 | #define CSISR_F2_INT (1 << 15) | |
116 | #define CSISR_F1_INT (1 << 14) | |
117 | #define CSISR_COF_INT (1 << 13) | |
118 | #define CSISR_ECC_INT (1 << 1) | |
119 | #define CSISR_DRDY (1 << 0) | |
120 | ||
121 | #define CSICR1 0x00 | |
122 | #define CSICR2 0x04 | |
123 | #define CSISR (cpu_is_mx27() ? 0x08 : 0x18) | |
124 | #define CSISTATFIFO 0x0c | |
125 | #define CSIRFIFO 0x10 | |
126 | #define CSIRXCNT 0x14 | |
127 | #define CSICR3 (cpu_is_mx27() ? 0x1C : 0x08) | |
128 | #define CSIDMASA_STATFIFO 0x20 | |
129 | #define CSIDMATA_STATFIFO 0x24 | |
130 | #define CSIDMASA_FB1 0x28 | |
131 | #define CSIDMASA_FB2 0x2c | |
132 | #define CSIFBUF_PARA 0x30 | |
133 | #define CSIIMAG_PARA 0x34 | |
134 | ||
135 | /* EMMA PrP */ | |
136 | #define PRP_CNTL 0x00 | |
137 | #define PRP_INTR_CNTL 0x04 | |
138 | #define PRP_INTRSTATUS 0x08 | |
139 | #define PRP_SOURCE_Y_PTR 0x0c | |
140 | #define PRP_SOURCE_CB_PTR 0x10 | |
141 | #define PRP_SOURCE_CR_PTR 0x14 | |
142 | #define PRP_DEST_RGB1_PTR 0x18 | |
143 | #define PRP_DEST_RGB2_PTR 0x1c | |
144 | #define PRP_DEST_Y_PTR 0x20 | |
145 | #define PRP_DEST_CB_PTR 0x24 | |
146 | #define PRP_DEST_CR_PTR 0x28 | |
147 | #define PRP_SRC_FRAME_SIZE 0x2c | |
148 | #define PRP_DEST_CH1_LINE_STRIDE 0x30 | |
149 | #define PRP_SRC_PIXEL_FORMAT_CNTL 0x34 | |
150 | #define PRP_CH1_PIXEL_FORMAT_CNTL 0x38 | |
151 | #define PRP_CH1_OUT_IMAGE_SIZE 0x3c | |
152 | #define PRP_CH2_OUT_IMAGE_SIZE 0x40 | |
153 | #define PRP_SRC_LINE_STRIDE 0x44 | |
154 | #define PRP_CSC_COEF_012 0x48 | |
155 | #define PRP_CSC_COEF_345 0x4c | |
156 | #define PRP_CSC_COEF_678 0x50 | |
157 | #define PRP_CH1_RZ_HORI_COEF1 0x54 | |
158 | #define PRP_CH1_RZ_HORI_COEF2 0x58 | |
159 | #define PRP_CH1_RZ_HORI_VALID 0x5c | |
160 | #define PRP_CH1_RZ_VERT_COEF1 0x60 | |
161 | #define PRP_CH1_RZ_VERT_COEF2 0x64 | |
162 | #define PRP_CH1_RZ_VERT_VALID 0x68 | |
163 | #define PRP_CH2_RZ_HORI_COEF1 0x6c | |
164 | #define PRP_CH2_RZ_HORI_COEF2 0x70 | |
165 | #define PRP_CH2_RZ_HORI_VALID 0x74 | |
166 | #define PRP_CH2_RZ_VERT_COEF1 0x78 | |
167 | #define PRP_CH2_RZ_VERT_COEF2 0x7c | |
168 | #define PRP_CH2_RZ_VERT_VALID 0x80 | |
169 | ||
170 | #define PRP_CNTL_CH1EN (1 << 0) | |
171 | #define PRP_CNTL_CH2EN (1 << 1) | |
172 | #define PRP_CNTL_CSIEN (1 << 2) | |
173 | #define PRP_CNTL_DATA_IN_YUV420 (0 << 3) | |
174 | #define PRP_CNTL_DATA_IN_YUV422 (1 << 3) | |
175 | #define PRP_CNTL_DATA_IN_RGB16 (2 << 3) | |
176 | #define PRP_CNTL_DATA_IN_RGB32 (3 << 3) | |
177 | #define PRP_CNTL_CH1_OUT_RGB8 (0 << 5) | |
178 | #define PRP_CNTL_CH1_OUT_RGB16 (1 << 5) | |
179 | #define PRP_CNTL_CH1_OUT_RGB32 (2 << 5) | |
180 | #define PRP_CNTL_CH1_OUT_YUV422 (3 << 5) | |
181 | #define PRP_CNTL_CH2_OUT_YUV420 (0 << 7) | |
182 | #define PRP_CNTL_CH2_OUT_YUV422 (1 << 7) | |
183 | #define PRP_CNTL_CH2_OUT_YUV444 (2 << 7) | |
184 | #define PRP_CNTL_CH1_LEN (1 << 9) | |
185 | #define PRP_CNTL_CH2_LEN (1 << 10) | |
186 | #define PRP_CNTL_SKIP_FRAME (1 << 11) | |
187 | #define PRP_CNTL_SWRST (1 << 12) | |
188 | #define PRP_CNTL_CLKEN (1 << 13) | |
189 | #define PRP_CNTL_WEN (1 << 14) | |
190 | #define PRP_CNTL_CH1BYP (1 << 15) | |
191 | #define PRP_CNTL_IN_TSKIP(x) ((x) << 16) | |
192 | #define PRP_CNTL_CH1_TSKIP(x) ((x) << 19) | |
193 | #define PRP_CNTL_CH2_TSKIP(x) ((x) << 22) | |
194 | #define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25) | |
195 | #define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27) | |
196 | #define PRP_CNTL_CH2B1EN (1 << 29) | |
197 | #define PRP_CNTL_CH2B2EN (1 << 30) | |
198 | #define PRP_CNTL_CH2FEN (1 << 31) | |
199 | ||
200 | /* IRQ Enable and status register */ | |
201 | #define PRP_INTR_RDERR (1 << 0) | |
202 | #define PRP_INTR_CH1WERR (1 << 1) | |
203 | #define PRP_INTR_CH2WERR (1 << 2) | |
204 | #define PRP_INTR_CH1FC (1 << 3) | |
205 | #define PRP_INTR_CH2FC (1 << 5) | |
206 | #define PRP_INTR_LBOVF (1 << 7) | |
207 | #define PRP_INTR_CH2OVF (1 << 8) | |
208 | ||
209 | #define mx27_camera_emma(pcdev) (cpu_is_mx27() && pcdev->use_emma) | |
210 | ||
211 | #define MAX_VIDEO_MEM 16 | |
212 | ||
f410991d JM |
213 | struct mx2_prp_cfg { |
214 | int channel; | |
215 | u32 in_fmt; | |
216 | u32 out_fmt; | |
217 | u32 src_pixel; | |
218 | u32 ch1_pixel; | |
219 | u32 irq_flags; | |
220 | }; | |
221 | ||
222 | /* prp configuration for a client-host fmt pair */ | |
223 | struct mx2_fmt_cfg { | |
224 | enum v4l2_mbus_pixelcode in_fmt; | |
225 | u32 out_fmt; | |
226 | struct mx2_prp_cfg cfg; | |
227 | }; | |
228 | ||
2066930d BS |
229 | struct mx2_camera_dev { |
230 | struct device *dev; | |
231 | struct soc_camera_host soc_host; | |
232 | struct soc_camera_device *icd; | |
233 | struct clk *clk_csi, *clk_emma; | |
234 | ||
235 | unsigned int irq_csi, irq_emma; | |
236 | void __iomem *base_csi, *base_emma; | |
237 | unsigned long base_dma; | |
238 | ||
239 | struct mx2_camera_platform_data *pdata; | |
240 | struct resource *res_csi, *res_emma; | |
241 | unsigned long platform_flags; | |
242 | ||
243 | struct list_head capture; | |
244 | struct list_head active_bufs; | |
245 | ||
246 | spinlock_t lock; | |
247 | ||
248 | int dma; | |
249 | struct mx2_buffer *active; | |
250 | struct mx2_buffer *fb1_active; | |
251 | struct mx2_buffer *fb2_active; | |
252 | ||
253 | int use_emma; | |
254 | ||
255 | u32 csicr1; | |
256 | ||
79d3c2c2 | 257 | void *discard_buffer; |
2066930d BS |
258 | dma_addr_t discard_buffer_dma; |
259 | size_t discard_size; | |
f410991d | 260 | struct mx2_fmt_cfg *emma_prp; |
ccd1a499 | 261 | u32 frame_count; |
2066930d BS |
262 | }; |
263 | ||
264 | /* buffer for one video frame */ | |
265 | struct mx2_buffer { | |
266 | /* common v4l buffer stuff -- must be first */ | |
267 | struct videobuf_buffer vb; | |
268 | ||
269 | enum v4l2_mbus_pixelcode code; | |
270 | ||
271 | int bufnum; | |
272 | }; | |
273 | ||
f410991d JM |
274 | static struct mx2_fmt_cfg mx27_emma_prp_table[] = { |
275 | /* | |
276 | * This is a generic configuration which is valid for most | |
277 | * prp input-output format combinations. | |
278 | * We set the incomming and outgoing pixelformat to a | |
279 | * 16 Bit wide format and adjust the bytesperline | |
280 | * accordingly. With this configuration the inputdata | |
281 | * will not be changed by the emma and could be any type | |
282 | * of 16 Bit Pixelformat. | |
283 | */ | |
284 | { | |
285 | .in_fmt = 0, | |
286 | .out_fmt = 0, | |
287 | .cfg = { | |
288 | .channel = 1, | |
289 | .in_fmt = PRP_CNTL_DATA_IN_RGB16, | |
290 | .out_fmt = PRP_CNTL_CH1_OUT_RGB16, | |
291 | .src_pixel = 0x2ca00565, /* RGB565 */ | |
292 | .ch1_pixel = 0x2ca00565, /* RGB565 */ | |
293 | .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | | |
294 | PRP_INTR_CH1FC | PRP_INTR_LBOVF, | |
295 | } | |
296 | }, | |
297 | { | |
298 | .in_fmt = V4L2_MBUS_FMT_YUYV8_2X8, | |
299 | .out_fmt = V4L2_PIX_FMT_YUV420, | |
300 | .cfg = { | |
301 | .channel = 2, | |
302 | .in_fmt = PRP_CNTL_DATA_IN_YUV422, | |
303 | .out_fmt = PRP_CNTL_CH2_OUT_YUV420, | |
304 | .src_pixel = 0x22000888, /* YUV422 (YUYV) */ | |
305 | .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | | |
306 | PRP_INTR_CH2FC | PRP_INTR_LBOVF | | |
307 | PRP_INTR_CH2OVF, | |
308 | } | |
309 | }, | |
310 | }; | |
311 | ||
312 | static struct mx2_fmt_cfg *mx27_emma_prp_get_format( | |
313 | enum v4l2_mbus_pixelcode in_fmt, | |
314 | u32 out_fmt) | |
315 | { | |
316 | int i; | |
317 | ||
318 | for (i = 1; i < ARRAY_SIZE(mx27_emma_prp_table); i++) | |
319 | if ((mx27_emma_prp_table[i].in_fmt == in_fmt) && | |
320 | (mx27_emma_prp_table[i].out_fmt == out_fmt)) { | |
321 | return &mx27_emma_prp_table[i]; | |
322 | } | |
323 | /* If no match return the most generic configuration */ | |
324 | return &mx27_emma_prp_table[0]; | |
325 | }; | |
326 | ||
2066930d BS |
327 | static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev) |
328 | { | |
329 | unsigned long flags; | |
330 | ||
331 | clk_disable(pcdev->clk_csi); | |
332 | writel(0, pcdev->base_csi + CSICR1); | |
333 | if (mx27_camera_emma(pcdev)) { | |
334 | writel(0, pcdev->base_emma + PRP_CNTL); | |
335 | } else if (cpu_is_mx25()) { | |
336 | spin_lock_irqsave(&pcdev->lock, flags); | |
337 | pcdev->fb1_active = NULL; | |
338 | pcdev->fb2_active = NULL; | |
339 | writel(0, pcdev->base_csi + CSIDMASA_FB1); | |
340 | writel(0, pcdev->base_csi + CSIDMASA_FB2); | |
341 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
342 | } | |
343 | } | |
344 | ||
345 | /* | |
346 | * The following two functions absolutely depend on the fact, that | |
347 | * there can be only one camera on mx2 camera sensor interface | |
348 | */ | |
349 | static int mx2_camera_add_device(struct soc_camera_device *icd) | |
350 | { | |
7dfff953 | 351 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
352 | struct mx2_camera_dev *pcdev = ici->priv; |
353 | int ret; | |
354 | u32 csicr1; | |
355 | ||
356 | if (pcdev->icd) | |
357 | return -EBUSY; | |
358 | ||
359 | ret = clk_enable(pcdev->clk_csi); | |
360 | if (ret < 0) | |
361 | return ret; | |
362 | ||
363 | csicr1 = CSICR1_MCLKEN; | |
364 | ||
365 | if (mx27_camera_emma(pcdev)) { | |
366 | csicr1 |= CSICR1_PRP_IF_EN | CSICR1_FCC | | |
367 | CSICR1_RXFF_LEVEL(0); | |
368 | } else if (cpu_is_mx27()) | |
369 | csicr1 |= CSICR1_SOF_INTEN | CSICR1_RXFF_LEVEL(2); | |
370 | ||
371 | pcdev->csicr1 = csicr1; | |
372 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
373 | ||
374 | pcdev->icd = icd; | |
ccd1a499 | 375 | pcdev->frame_count = 0; |
2066930d | 376 | |
7dfff953 | 377 | dev_info(icd->parent, "Camera driver attached to camera %d\n", |
2066930d BS |
378 | icd->devnum); |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
383 | static void mx2_camera_remove_device(struct soc_camera_device *icd) | |
384 | { | |
7dfff953 | 385 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
386 | struct mx2_camera_dev *pcdev = ici->priv; |
387 | ||
388 | BUG_ON(icd != pcdev->icd); | |
389 | ||
7dfff953 | 390 | dev_info(icd->parent, "Camera driver detached from camera %d\n", |
2066930d BS |
391 | icd->devnum); |
392 | ||
393 | mx2_camera_deactivate(pcdev); | |
394 | ||
395 | if (pcdev->discard_buffer) { | |
396 | dma_free_coherent(ici->v4l2_dev.dev, pcdev->discard_size, | |
397 | pcdev->discard_buffer, | |
398 | pcdev->discard_buffer_dma); | |
399 | pcdev->discard_buffer = NULL; | |
400 | } | |
401 | ||
402 | pcdev->icd = NULL; | |
403 | } | |
404 | ||
405 | #ifdef CONFIG_MACH_MX27 | |
406 | static void mx27_camera_dma_enable(struct mx2_camera_dev *pcdev) | |
407 | { | |
408 | u32 tmp; | |
409 | ||
410 | imx_dma_enable(pcdev->dma); | |
411 | ||
412 | tmp = readl(pcdev->base_csi + CSICR1); | |
413 | tmp |= CSICR1_RF_OR_INTEN; | |
414 | writel(tmp, pcdev->base_csi + CSICR1); | |
415 | } | |
416 | ||
417 | static irqreturn_t mx27_camera_irq(int irq_csi, void *data) | |
418 | { | |
419 | struct mx2_camera_dev *pcdev = data; | |
420 | u32 status = readl(pcdev->base_csi + CSISR); | |
421 | ||
422 | if (status & CSISR_SOF_INT && pcdev->active) { | |
423 | u32 tmp; | |
424 | ||
425 | tmp = readl(pcdev->base_csi + CSICR1); | |
426 | writel(tmp | CSICR1_CLR_RXFIFO, pcdev->base_csi + CSICR1); | |
427 | mx27_camera_dma_enable(pcdev); | |
428 | } | |
429 | ||
430 | writel(CSISR_SOF_INT | CSISR_RFF_OR_INT, pcdev->base_csi + CSISR); | |
431 | ||
432 | return IRQ_HANDLED; | |
433 | } | |
434 | #else | |
435 | static irqreturn_t mx27_camera_irq(int irq_csi, void *data) | |
436 | { | |
437 | return IRQ_NONE; | |
438 | } | |
439 | #endif /* CONFIG_MACH_MX27 */ | |
440 | ||
441 | static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb, | |
442 | int state) | |
443 | { | |
444 | struct videobuf_buffer *vb; | |
445 | struct mx2_buffer *buf; | |
446 | struct mx2_buffer **fb_active = fb == 1 ? &pcdev->fb1_active : | |
447 | &pcdev->fb2_active; | |
448 | u32 fb_reg = fb == 1 ? CSIDMASA_FB1 : CSIDMASA_FB2; | |
449 | unsigned long flags; | |
450 | ||
451 | spin_lock_irqsave(&pcdev->lock, flags); | |
452 | ||
5384a12b BS |
453 | if (*fb_active == NULL) |
454 | goto out; | |
455 | ||
2066930d BS |
456 | vb = &(*fb_active)->vb; |
457 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, | |
458 | vb, vb->baddr, vb->bsize); | |
459 | ||
460 | vb->state = state; | |
461 | do_gettimeofday(&vb->ts); | |
462 | vb->field_count++; | |
463 | ||
464 | wake_up(&vb->done); | |
465 | ||
466 | if (list_empty(&pcdev->capture)) { | |
467 | buf = NULL; | |
468 | writel(0, pcdev->base_csi + fb_reg); | |
469 | } else { | |
470 | buf = list_entry(pcdev->capture.next, struct mx2_buffer, | |
471 | vb.queue); | |
472 | vb = &buf->vb; | |
473 | list_del(&vb->queue); | |
474 | vb->state = VIDEOBUF_ACTIVE; | |
475 | writel(videobuf_to_dma_contig(vb), pcdev->base_csi + fb_reg); | |
476 | } | |
477 | ||
478 | *fb_active = buf; | |
479 | ||
5384a12b | 480 | out: |
2066930d BS |
481 | spin_unlock_irqrestore(&pcdev->lock, flags); |
482 | } | |
483 | ||
484 | static irqreturn_t mx25_camera_irq(int irq_csi, void *data) | |
485 | { | |
486 | struct mx2_camera_dev *pcdev = data; | |
487 | u32 status = readl(pcdev->base_csi + CSISR); | |
488 | ||
489 | if (status & CSISR_DMA_TSF_FB1_INT) | |
490 | mx25_camera_frame_done(pcdev, 1, VIDEOBUF_DONE); | |
491 | else if (status & CSISR_DMA_TSF_FB2_INT) | |
492 | mx25_camera_frame_done(pcdev, 2, VIDEOBUF_DONE); | |
493 | ||
494 | /* FIXME: handle CSISR_RFF_OR_INT */ | |
495 | ||
496 | writel(status, pcdev->base_csi + CSISR); | |
497 | ||
498 | return IRQ_HANDLED; | |
499 | } | |
500 | ||
501 | /* | |
502 | * Videobuf operations | |
503 | */ | |
504 | static int mx2_videobuf_setup(struct videobuf_queue *vq, unsigned int *count, | |
505 | unsigned int *size) | |
506 | { | |
507 | struct soc_camera_device *icd = vq->priv_data; | |
508 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, | |
509 | icd->current_fmt->host_fmt); | |
510 | ||
7dfff953 | 511 | dev_dbg(icd->parent, "count=%d, size=%d\n", *count, *size); |
2066930d BS |
512 | |
513 | if (bytes_per_line < 0) | |
514 | return bytes_per_line; | |
515 | ||
516 | *size = bytes_per_line * icd->user_height; | |
517 | ||
518 | if (0 == *count) | |
519 | *count = 32; | |
520 | if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024) | |
521 | *count = (MAX_VIDEO_MEM * 1024 * 1024) / *size; | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
526 | static void free_buffer(struct videobuf_queue *vq, struct mx2_buffer *buf) | |
527 | { | |
528 | struct soc_camera_device *icd = vq->priv_data; | |
529 | struct videobuf_buffer *vb = &buf->vb; | |
530 | ||
7dfff953 | 531 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
2066930d BS |
532 | vb, vb->baddr, vb->bsize); |
533 | ||
534 | /* | |
535 | * This waits until this buffer is out of danger, i.e., until it is no | |
88bfd0bd | 536 | * longer in state VIDEOBUF_QUEUED or VIDEOBUF_ACTIVE |
2066930d | 537 | */ |
0e0809a5 | 538 | videobuf_waiton(vq, vb, 0, 0); |
2066930d BS |
539 | |
540 | videobuf_dma_contig_free(vq, vb); | |
7dfff953 | 541 | dev_dbg(icd->parent, "%s freed\n", __func__); |
2066930d BS |
542 | |
543 | vb->state = VIDEOBUF_NEEDS_INIT; | |
544 | } | |
545 | ||
546 | static int mx2_videobuf_prepare(struct videobuf_queue *vq, | |
547 | struct videobuf_buffer *vb, enum v4l2_field field) | |
548 | { | |
549 | struct soc_camera_device *icd = vq->priv_data; | |
550 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); | |
551 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, | |
552 | icd->current_fmt->host_fmt); | |
553 | int ret = 0; | |
554 | ||
7dfff953 | 555 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
2066930d BS |
556 | vb, vb->baddr, vb->bsize); |
557 | ||
558 | if (bytes_per_line < 0) | |
559 | return bytes_per_line; | |
560 | ||
561 | #ifdef DEBUG | |
562 | /* | |
563 | * This can be useful if you want to see if we actually fill | |
564 | * the buffer with something | |
565 | */ | |
566 | memset((void *)vb->baddr, 0xaa, vb->bsize); | |
567 | #endif | |
568 | ||
569 | if (buf->code != icd->current_fmt->code || | |
570 | vb->width != icd->user_width || | |
571 | vb->height != icd->user_height || | |
572 | vb->field != field) { | |
573 | buf->code = icd->current_fmt->code; | |
574 | vb->width = icd->user_width; | |
575 | vb->height = icd->user_height; | |
576 | vb->field = field; | |
577 | vb->state = VIDEOBUF_NEEDS_INIT; | |
578 | } | |
579 | ||
580 | vb->size = bytes_per_line * vb->height; | |
581 | if (vb->baddr && vb->bsize < vb->size) { | |
582 | ret = -EINVAL; | |
583 | goto out; | |
584 | } | |
585 | ||
586 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
587 | ret = videobuf_iolock(vq, vb, NULL); | |
588 | if (ret) | |
589 | goto fail; | |
590 | ||
591 | vb->state = VIDEOBUF_PREPARED; | |
592 | } | |
593 | ||
594 | return 0; | |
595 | ||
596 | fail: | |
597 | free_buffer(vq, buf); | |
598 | out: | |
599 | return ret; | |
600 | } | |
601 | ||
602 | static void mx2_videobuf_queue(struct videobuf_queue *vq, | |
603 | struct videobuf_buffer *vb) | |
604 | { | |
605 | struct soc_camera_device *icd = vq->priv_data; | |
606 | struct soc_camera_host *ici = | |
7dfff953 | 607 | to_soc_camera_host(icd->parent); |
2066930d BS |
608 | struct mx2_camera_dev *pcdev = ici->priv; |
609 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); | |
610 | unsigned long flags; | |
611 | ||
7dfff953 | 612 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
2066930d BS |
613 | vb, vb->baddr, vb->bsize); |
614 | ||
615 | spin_lock_irqsave(&pcdev->lock, flags); | |
616 | ||
617 | vb->state = VIDEOBUF_QUEUED; | |
618 | list_add_tail(&vb->queue, &pcdev->capture); | |
619 | ||
620 | if (mx27_camera_emma(pcdev)) { | |
621 | goto out; | |
622 | #ifdef CONFIG_MACH_MX27 | |
623 | } else if (cpu_is_mx27()) { | |
624 | int ret; | |
625 | ||
626 | if (pcdev->active == NULL) { | |
627 | ret = imx_dma_setup_single(pcdev->dma, | |
628 | videobuf_to_dma_contig(vb), vb->size, | |
629 | (u32)pcdev->base_dma + 0x10, | |
630 | DMA_MODE_READ); | |
631 | if (ret) { | |
632 | vb->state = VIDEOBUF_ERROR; | |
633 | wake_up(&vb->done); | |
634 | goto out; | |
635 | } | |
636 | ||
637 | vb->state = VIDEOBUF_ACTIVE; | |
638 | pcdev->active = buf; | |
639 | } | |
640 | #endif | |
641 | } else { /* cpu_is_mx25() */ | |
642 | u32 csicr3, dma_inten = 0; | |
643 | ||
644 | if (pcdev->fb1_active == NULL) { | |
645 | writel(videobuf_to_dma_contig(vb), | |
646 | pcdev->base_csi + CSIDMASA_FB1); | |
647 | pcdev->fb1_active = buf; | |
648 | dma_inten = CSICR1_FB1_DMA_INTEN; | |
649 | } else if (pcdev->fb2_active == NULL) { | |
650 | writel(videobuf_to_dma_contig(vb), | |
651 | pcdev->base_csi + CSIDMASA_FB2); | |
652 | pcdev->fb2_active = buf; | |
653 | dma_inten = CSICR1_FB2_DMA_INTEN; | |
654 | } | |
655 | ||
656 | if (dma_inten) { | |
657 | list_del(&vb->queue); | |
658 | vb->state = VIDEOBUF_ACTIVE; | |
659 | ||
660 | csicr3 = readl(pcdev->base_csi + CSICR3); | |
661 | ||
662 | /* Reflash DMA */ | |
663 | writel(csicr3 | CSICR3_DMA_REFLASH_RFF, | |
664 | pcdev->base_csi + CSICR3); | |
665 | ||
666 | /* clear & enable interrupts */ | |
667 | writel(dma_inten, pcdev->base_csi + CSISR); | |
668 | pcdev->csicr1 |= dma_inten; | |
669 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
670 | ||
671 | /* enable DMA */ | |
672 | csicr3 |= CSICR3_DMA_REQ_EN_RFF | CSICR3_RXFF_LEVEL(1); | |
673 | writel(csicr3, pcdev->base_csi + CSICR3); | |
674 | } | |
675 | } | |
676 | ||
677 | out: | |
678 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
679 | } | |
680 | ||
681 | static void mx2_videobuf_release(struct videobuf_queue *vq, | |
682 | struct videobuf_buffer *vb) | |
683 | { | |
684 | struct soc_camera_device *icd = vq->priv_data; | |
7dfff953 | 685 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
686 | struct mx2_camera_dev *pcdev = ici->priv; |
687 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); | |
688 | unsigned long flags; | |
689 | ||
690 | #ifdef DEBUG | |
7dfff953 | 691 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
2066930d BS |
692 | vb, vb->baddr, vb->bsize); |
693 | ||
694 | switch (vb->state) { | |
695 | case VIDEOBUF_ACTIVE: | |
7dfff953 | 696 | dev_info(icd->parent, "%s (active)\n", __func__); |
2066930d BS |
697 | break; |
698 | case VIDEOBUF_QUEUED: | |
7dfff953 | 699 | dev_info(icd->parent, "%s (queued)\n", __func__); |
2066930d BS |
700 | break; |
701 | case VIDEOBUF_PREPARED: | |
7dfff953 | 702 | dev_info(icd->parent, "%s (prepared)\n", __func__); |
2066930d BS |
703 | break; |
704 | default: | |
7dfff953 | 705 | dev_info(icd->parent, "%s (unknown) %d\n", __func__, |
2066930d BS |
706 | vb->state); |
707 | break; | |
708 | } | |
709 | #endif | |
710 | ||
711 | /* | |
712 | * Terminate only queued but inactive buffers. Active buffers are | |
713 | * released when they become inactive after videobuf_waiton(). | |
714 | * | |
7c6b7319 BS |
715 | * FIXME: implement forced termination of active buffers for mx27 and |
716 | * mx27 eMMA, so that the user won't get stuck in an uninterruptible | |
717 | * state. This requires a specific handling for each of the these DMA | |
718 | * types. | |
2066930d BS |
719 | */ |
720 | spin_lock_irqsave(&pcdev->lock, flags); | |
721 | if (vb->state == VIDEOBUF_QUEUED) { | |
722 | list_del(&vb->queue); | |
723 | vb->state = VIDEOBUF_ERROR; | |
7c6b7319 BS |
724 | } else if (cpu_is_mx25() && vb->state == VIDEOBUF_ACTIVE) { |
725 | if (pcdev->fb1_active == buf) { | |
726 | pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN; | |
727 | writel(0, pcdev->base_csi + CSIDMASA_FB1); | |
728 | pcdev->fb1_active = NULL; | |
729 | } else if (pcdev->fb2_active == buf) { | |
730 | pcdev->csicr1 &= ~CSICR1_FB2_DMA_INTEN; | |
731 | writel(0, pcdev->base_csi + CSIDMASA_FB2); | |
732 | pcdev->fb2_active = NULL; | |
733 | } | |
734 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
735 | vb->state = VIDEOBUF_ERROR; | |
2066930d BS |
736 | } |
737 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
738 | ||
739 | free_buffer(vq, buf); | |
740 | } | |
741 | ||
742 | static struct videobuf_queue_ops mx2_videobuf_ops = { | |
743 | .buf_setup = mx2_videobuf_setup, | |
744 | .buf_prepare = mx2_videobuf_prepare, | |
745 | .buf_queue = mx2_videobuf_queue, | |
746 | .buf_release = mx2_videobuf_release, | |
747 | }; | |
748 | ||
749 | static void mx2_camera_init_videobuf(struct videobuf_queue *q, | |
750 | struct soc_camera_device *icd) | |
751 | { | |
7dfff953 | 752 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
2066930d BS |
753 | struct mx2_camera_dev *pcdev = ici->priv; |
754 | ||
755 | videobuf_queue_dma_contig_init(q, &mx2_videobuf_ops, pcdev->dev, | |
756 | &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
b6a633c1 GL |
757 | V4L2_FIELD_NONE, sizeof(struct mx2_buffer), |
758 | icd, &icd->video_lock); | |
2066930d BS |
759 | } |
760 | ||
db592a24 GL |
761 | #define MX2_BUS_FLAGS (V4L2_MBUS_MASTER | \ |
762 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
763 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
764 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
765 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
766 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
767 | V4L2_MBUS_PCLK_SAMPLE_FALLING | \ | |
768 | V4L2_MBUS_DATA_ACTIVE_HIGH | \ | |
769 | V4L2_MBUS_DATA_ACTIVE_LOW) | |
2066930d BS |
770 | |
771 | static int mx27_camera_emma_prp_reset(struct mx2_camera_dev *pcdev) | |
772 | { | |
773 | u32 cntl; | |
774 | int count = 0; | |
775 | ||
776 | cntl = readl(pcdev->base_emma + PRP_CNTL); | |
777 | writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL); | |
778 | while (count++ < 100) { | |
779 | if (!(readl(pcdev->base_emma + PRP_CNTL) & PRP_CNTL_SWRST)) | |
780 | return 0; | |
781 | barrier(); | |
782 | udelay(1); | |
783 | } | |
784 | ||
785 | return -ETIMEDOUT; | |
786 | } | |
787 | ||
788 | static void mx27_camera_emma_buf_init(struct soc_camera_device *icd, | |
789 | int bytesperline) | |
790 | { | |
791 | struct soc_camera_host *ici = | |
7dfff953 | 792 | to_soc_camera_host(icd->parent); |
2066930d | 793 | struct mx2_camera_dev *pcdev = ici->priv; |
f410991d JM |
794 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
795 | u32 imgsize = pcdev->icd->user_height * pcdev->icd->user_width; | |
796 | ||
797 | if (prp->cfg.channel == 1) { | |
798 | writel(pcdev->discard_buffer_dma, | |
799 | pcdev->base_emma + PRP_DEST_RGB1_PTR); | |
800 | writel(pcdev->discard_buffer_dma, | |
801 | pcdev->base_emma + PRP_DEST_RGB2_PTR); | |
802 | ||
803 | writel(PRP_CNTL_CH1EN | | |
804 | PRP_CNTL_CSIEN | | |
805 | prp->cfg.in_fmt | | |
806 | prp->cfg.out_fmt | | |
807 | PRP_CNTL_CH1_LEN | | |
808 | PRP_CNTL_CH1BYP | | |
809 | PRP_CNTL_CH1_TSKIP(0) | | |
810 | PRP_CNTL_IN_TSKIP(0), | |
811 | pcdev->base_emma + PRP_CNTL); | |
812 | ||
813 | writel((icd->user_width << 16) | icd->user_height, | |
814 | pcdev->base_emma + PRP_SRC_FRAME_SIZE); | |
815 | writel((icd->user_width << 16) | icd->user_height, | |
816 | pcdev->base_emma + PRP_CH1_OUT_IMAGE_SIZE); | |
817 | writel(bytesperline, | |
818 | pcdev->base_emma + PRP_DEST_CH1_LINE_STRIDE); | |
819 | writel(prp->cfg.src_pixel, | |
820 | pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL); | |
821 | writel(prp->cfg.ch1_pixel, | |
822 | pcdev->base_emma + PRP_CH1_PIXEL_FORMAT_CNTL); | |
823 | } else { /* channel 2 */ | |
824 | writel(pcdev->discard_buffer_dma, | |
825 | pcdev->base_emma + PRP_DEST_Y_PTR); | |
826 | writel(pcdev->discard_buffer_dma, | |
827 | pcdev->base_emma + PRP_SOURCE_Y_PTR); | |
828 | ||
829 | if (prp->cfg.out_fmt == PRP_CNTL_CH2_OUT_YUV420) { | |
830 | writel(pcdev->discard_buffer_dma + imgsize, | |
831 | pcdev->base_emma + PRP_DEST_CB_PTR); | |
832 | writel(pcdev->discard_buffer_dma + ((5 * imgsize) / 4), | |
833 | pcdev->base_emma + PRP_DEST_CR_PTR); | |
834 | writel(pcdev->discard_buffer_dma + imgsize, | |
835 | pcdev->base_emma + PRP_SOURCE_CB_PTR); | |
836 | writel(pcdev->discard_buffer_dma + ((5 * imgsize) / 4), | |
837 | pcdev->base_emma + PRP_SOURCE_CR_PTR); | |
838 | } | |
2066930d | 839 | |
f410991d | 840 | writel(PRP_CNTL_CH2EN | |
2066930d | 841 | PRP_CNTL_CSIEN | |
f410991d JM |
842 | prp->cfg.in_fmt | |
843 | prp->cfg.out_fmt | | |
844 | PRP_CNTL_CH2_LEN | | |
845 | PRP_CNTL_CH2_TSKIP(0) | | |
2066930d BS |
846 | PRP_CNTL_IN_TSKIP(0), |
847 | pcdev->base_emma + PRP_CNTL); | |
848 | ||
f410991d | 849 | writel((icd->user_width << 16) | icd->user_height, |
2066930d | 850 | pcdev->base_emma + PRP_SRC_FRAME_SIZE); |
f410991d JM |
851 | |
852 | writel((icd->user_width << 16) | icd->user_height, | |
853 | pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE); | |
854 | ||
855 | writel(prp->cfg.src_pixel, | |
2066930d | 856 | pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL); |
f410991d JM |
857 | |
858 | } | |
2066930d BS |
859 | |
860 | /* Enable interrupts */ | |
f410991d | 861 | writel(prp->cfg.irq_flags, pcdev->base_emma + PRP_INTR_CNTL); |
2066930d BS |
862 | } |
863 | ||
8843d119 | 864 | static int mx2_camera_set_bus_param(struct soc_camera_device *icd) |
2066930d | 865 | { |
db592a24 GL |
866 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
867 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
2066930d | 868 | struct mx2_camera_dev *pcdev = ici->priv; |
db592a24 GL |
869 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
870 | unsigned long common_flags; | |
871 | int ret; | |
2066930d BS |
872 | int bytesperline; |
873 | u32 csicr1 = pcdev->csicr1; | |
874 | ||
db592a24 GL |
875 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
876 | if (!ret) { | |
877 | common_flags = soc_mbus_config_compatible(&cfg, MX2_BUS_FLAGS); | |
878 | if (!common_flags) { | |
879 | dev_warn(icd->parent, | |
880 | "Flags incompatible: camera 0x%x, host 0x%x\n", | |
881 | cfg.flags, MX2_BUS_FLAGS); | |
882 | return -EINVAL; | |
883 | } | |
884 | } else if (ret != -ENOIOCTLCMD) { | |
885 | return ret; | |
886 | } else { | |
887 | common_flags = MX2_BUS_FLAGS; | |
888 | } | |
2066930d | 889 | |
db592a24 GL |
890 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
891 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
2066930d | 892 | if (pcdev->platform_flags & MX2_CAMERA_HSYNC_HIGH) |
db592a24 | 893 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
2066930d | 894 | else |
db592a24 | 895 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
2066930d BS |
896 | } |
897 | ||
db592a24 GL |
898 | if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && |
899 | (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { | |
2066930d | 900 | if (pcdev->platform_flags & MX2_CAMERA_PCLK_SAMPLE_RISING) |
db592a24 | 901 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; |
2066930d | 902 | else |
db592a24 | 903 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; |
2066930d BS |
904 | } |
905 | ||
db592a24 GL |
906 | cfg.flags = common_flags; |
907 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
908 | if (ret < 0 && ret != -ENOIOCTLCMD) { | |
909 | dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n", | |
910 | common_flags, ret); | |
2066930d | 911 | return ret; |
db592a24 | 912 | } |
2066930d | 913 | |
db592a24 | 914 | if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) |
d86097e1 | 915 | csicr1 |= CSICR1_REDGE; |
db592a24 | 916 | if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) |
2066930d | 917 | csicr1 |= CSICR1_SOF_POL; |
db592a24 | 918 | if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) |
2066930d BS |
919 | csicr1 |= CSICR1_HSYNC_POL; |
920 | if (pcdev->platform_flags & MX2_CAMERA_SWAP16) | |
921 | csicr1 |= CSICR1_SWAP16_EN; | |
922 | if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC) | |
923 | csicr1 |= CSICR1_EXT_VSYNC; | |
924 | if (pcdev->platform_flags & MX2_CAMERA_CCIR) | |
925 | csicr1 |= CSICR1_CCIR_EN; | |
926 | if (pcdev->platform_flags & MX2_CAMERA_CCIR_INTERLACE) | |
927 | csicr1 |= CSICR1_CCIR_MODE; | |
928 | if (pcdev->platform_flags & MX2_CAMERA_GATED_CLOCK) | |
929 | csicr1 |= CSICR1_GCLK_MODE; | |
930 | if (pcdev->platform_flags & MX2_CAMERA_INV_DATA) | |
931 | csicr1 |= CSICR1_INV_DATA; | |
932 | if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB) | |
933 | csicr1 |= CSICR1_PACK_DIR; | |
934 | ||
935 | pcdev->csicr1 = csicr1; | |
936 | ||
937 | bytesperline = soc_mbus_bytes_per_line(icd->user_width, | |
938 | icd->current_fmt->host_fmt); | |
939 | if (bytesperline < 0) | |
940 | return bytesperline; | |
941 | ||
942 | if (mx27_camera_emma(pcdev)) { | |
943 | ret = mx27_camera_emma_prp_reset(pcdev); | |
944 | if (ret) | |
945 | return ret; | |
946 | ||
947 | if (pcdev->discard_buffer) | |
948 | dma_free_coherent(ici->v4l2_dev.dev, | |
949 | pcdev->discard_size, pcdev->discard_buffer, | |
950 | pcdev->discard_buffer_dma); | |
951 | ||
952 | /* | |
953 | * I didn't manage to properly enable/disable the prp | |
954 | * on a per frame basis during running transfers, | |
955 | * thus we allocate a buffer here and use it to | |
956 | * discard frames when no buffer is available. | |
957 | * Feel free to work on this ;) | |
958 | */ | |
959 | pcdev->discard_size = icd->user_height * bytesperline; | |
960 | pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev, | |
961 | pcdev->discard_size, &pcdev->discard_buffer_dma, | |
962 | GFP_KERNEL); | |
963 | if (!pcdev->discard_buffer) | |
964 | return -ENOMEM; | |
965 | ||
966 | mx27_camera_emma_buf_init(icd, bytesperline); | |
967 | } else if (cpu_is_mx25()) { | |
968 | writel((bytesperline * icd->user_height) >> 2, | |
969 | pcdev->base_csi + CSIRXCNT); | |
970 | writel((bytesperline << 16) | icd->user_height, | |
971 | pcdev->base_csi + CSIIMAG_PARA); | |
972 | } | |
973 | ||
974 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
979 | static int mx2_camera_set_crop(struct soc_camera_device *icd, | |
980 | struct v4l2_crop *a) | |
981 | { | |
982 | struct v4l2_rect *rect = &a->c; | |
983 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
984 | struct v4l2_mbus_framefmt mf; | |
985 | int ret; | |
986 | ||
987 | soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); | |
988 | soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); | |
989 | ||
990 | ret = v4l2_subdev_call(sd, video, s_crop, a); | |
991 | if (ret < 0) | |
992 | return ret; | |
993 | ||
994 | /* The capture device might have changed its output */ | |
995 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
996 | if (ret < 0) | |
997 | return ret; | |
998 | ||
7dfff953 | 999 | dev_dbg(icd->parent, "Sensor cropped %dx%d\n", |
2066930d BS |
1000 | mf.width, mf.height); |
1001 | ||
1002 | icd->user_width = mf.width; | |
1003 | icd->user_height = mf.height; | |
1004 | ||
1005 | return ret; | |
1006 | } | |
1007 | ||
f410991d JM |
1008 | static int mx2_camera_get_formats(struct soc_camera_device *icd, |
1009 | unsigned int idx, | |
1010 | struct soc_camera_format_xlate *xlate) | |
1011 | { | |
1012 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
1013 | const struct soc_mbus_pixelfmt *fmt; | |
1014 | struct device *dev = icd->parent; | |
1015 | enum v4l2_mbus_pixelcode code; | |
1016 | int ret, formats = 0; | |
1017 | ||
1018 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); | |
1019 | if (ret < 0) | |
1020 | /* no more formats */ | |
1021 | return 0; | |
1022 | ||
1023 | fmt = soc_mbus_get_fmtdesc(code); | |
1024 | if (!fmt) { | |
1025 | dev_err(dev, "Invalid format code #%u: %d\n", idx, code); | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | if (code == V4L2_MBUS_FMT_YUYV8_2X8) { | |
1030 | formats++; | |
1031 | if (xlate) { | |
1032 | /* | |
1033 | * CH2 can output YUV420 which is a standard format in | |
1034 | * soc_mediabus.c | |
1035 | */ | |
1036 | xlate->host_fmt = | |
1037 | soc_mbus_get_fmtdesc(V4L2_MBUS_FMT_YUYV8_1_5X8); | |
1038 | xlate->code = code; | |
1039 | dev_dbg(dev, "Providing host format %s for sensor code %d\n", | |
1040 | xlate->host_fmt->name, code); | |
1041 | xlate++; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | /* Generic pass-trough */ | |
1046 | formats++; | |
1047 | if (xlate) { | |
1048 | xlate->host_fmt = fmt; | |
1049 | xlate->code = code; | |
1050 | xlate++; | |
1051 | } | |
1052 | return formats; | |
1053 | } | |
1054 | ||
2066930d BS |
1055 | static int mx2_camera_set_fmt(struct soc_camera_device *icd, |
1056 | struct v4l2_format *f) | |
1057 | { | |
f410991d JM |
1058 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1059 | struct mx2_camera_dev *pcdev = ici->priv; | |
2066930d BS |
1060 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1061 | const struct soc_camera_format_xlate *xlate; | |
1062 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1063 | struct v4l2_mbus_framefmt mf; | |
1064 | int ret; | |
1065 | ||
1066 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); | |
1067 | if (!xlate) { | |
7dfff953 | 1068 | dev_warn(icd->parent, "Format %x not found\n", |
2066930d BS |
1069 | pix->pixelformat); |
1070 | return -EINVAL; | |
1071 | } | |
1072 | ||
2066930d BS |
1073 | mf.width = pix->width; |
1074 | mf.height = pix->height; | |
1075 | mf.field = pix->field; | |
1076 | mf.colorspace = pix->colorspace; | |
1077 | mf.code = xlate->code; | |
1078 | ||
1079 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); | |
1080 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
1081 | return ret; | |
1082 | ||
1083 | if (mf.code != xlate->code) | |
1084 | return -EINVAL; | |
1085 | ||
1086 | pix->width = mf.width; | |
1087 | pix->height = mf.height; | |
1088 | pix->field = mf.field; | |
1089 | pix->colorspace = mf.colorspace; | |
1090 | icd->current_fmt = xlate; | |
1091 | ||
f410991d JM |
1092 | if (mx27_camera_emma(pcdev)) |
1093 | pcdev->emma_prp = mx27_emma_prp_get_format(xlate->code, | |
1094 | xlate->host_fmt->fourcc); | |
1095 | ||
2066930d BS |
1096 | return 0; |
1097 | } | |
1098 | ||
1099 | static int mx2_camera_try_fmt(struct soc_camera_device *icd, | |
1100 | struct v4l2_format *f) | |
1101 | { | |
2066930d BS |
1102 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
1103 | const struct soc_camera_format_xlate *xlate; | |
1104 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
1105 | struct v4l2_mbus_framefmt mf; | |
1106 | __u32 pixfmt = pix->pixelformat; | |
1107 | unsigned int width_limit; | |
1108 | int ret; | |
1109 | ||
1110 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); | |
1111 | if (pixfmt && !xlate) { | |
7dfff953 | 1112 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
2066930d BS |
1113 | return -EINVAL; |
1114 | } | |
1115 | ||
1116 | /* FIXME: implement MX27 limits */ | |
1117 | ||
2066930d BS |
1118 | /* limit to MX25 hardware capabilities */ |
1119 | if (cpu_is_mx25()) { | |
1120 | if (xlate->host_fmt->bits_per_sample <= 8) | |
1121 | width_limit = 0xffff * 4; | |
1122 | else | |
1123 | width_limit = 0xffff * 2; | |
1124 | /* CSIIMAG_PARA limit */ | |
1125 | if (pix->width > width_limit) | |
1126 | pix->width = width_limit; | |
1127 | if (pix->height > 0xffff) | |
1128 | pix->height = 0xffff; | |
1129 | ||
1130 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, | |
1131 | xlate->host_fmt); | |
1132 | if (pix->bytesperline < 0) | |
1133 | return pix->bytesperline; | |
1134 | pix->sizeimage = pix->height * pix->bytesperline; | |
28281a71 GL |
1135 | /* Check against the CSIRXCNT limit */ |
1136 | if (pix->sizeimage > 4 * 0x3ffff) { | |
1137 | /* Adjust geometry, preserve aspect ratio */ | |
1138 | unsigned int new_height = int_sqrt(4 * 0x3ffff * | |
1139 | pix->height / pix->bytesperline); | |
1140 | pix->width = new_height * pix->width / pix->height; | |
1141 | pix->height = new_height; | |
1142 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, | |
1143 | xlate->host_fmt); | |
1144 | BUG_ON(pix->bytesperline < 0); | |
2066930d BS |
1145 | } |
1146 | } | |
1147 | ||
1148 | /* limit to sensor capabilities */ | |
1149 | mf.width = pix->width; | |
1150 | mf.height = pix->height; | |
1151 | mf.field = pix->field; | |
1152 | mf.colorspace = pix->colorspace; | |
1153 | mf.code = xlate->code; | |
1154 | ||
1155 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); | |
1156 | if (ret < 0) | |
1157 | return ret; | |
1158 | ||
1159 | if (mf.field == V4L2_FIELD_ANY) | |
1160 | mf.field = V4L2_FIELD_NONE; | |
f410991d JM |
1161 | /* |
1162 | * Driver supports interlaced images provided they have | |
1163 | * both fields so that they can be processed as if they | |
1164 | * were progressive. | |
1165 | */ | |
1166 | if (mf.field != V4L2_FIELD_NONE && !V4L2_FIELD_HAS_BOTH(mf.field)) { | |
7dfff953 | 1167 | dev_err(icd->parent, "Field type %d unsupported.\n", |
2066930d BS |
1168 | mf.field); |
1169 | return -EINVAL; | |
1170 | } | |
1171 | ||
1172 | pix->width = mf.width; | |
1173 | pix->height = mf.height; | |
1174 | pix->field = mf.field; | |
1175 | pix->colorspace = mf.colorspace; | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | static int mx2_camera_querycap(struct soc_camera_host *ici, | |
1181 | struct v4l2_capability *cap) | |
1182 | { | |
1183 | /* cap->name is set by the friendly caller:-> */ | |
1184 | strlcpy(cap->card, MX2_CAM_DRIVER_DESCRIPTION, sizeof(cap->card)); | |
2066930d BS |
1185 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
6b101926 | 1190 | static int mx2_camera_reqbufs(struct soc_camera_device *icd, |
2066930d BS |
1191 | struct v4l2_requestbuffers *p) |
1192 | { | |
1193 | int i; | |
1194 | ||
1195 | for (i = 0; i < p->count; i++) { | |
6b101926 | 1196 | struct mx2_buffer *buf = container_of(icd->vb_vidq.bufs[i], |
2066930d BS |
1197 | struct mx2_buffer, vb); |
1198 | INIT_LIST_HEAD(&buf->vb.queue); | |
1199 | } | |
1200 | ||
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | #ifdef CONFIG_MACH_MX27 | |
1205 | static void mx27_camera_frame_done(struct mx2_camera_dev *pcdev, int state) | |
1206 | { | |
1207 | struct videobuf_buffer *vb; | |
1208 | struct mx2_buffer *buf; | |
1209 | unsigned long flags; | |
1210 | int ret; | |
1211 | ||
1212 | spin_lock_irqsave(&pcdev->lock, flags); | |
1213 | ||
1214 | if (!pcdev->active) { | |
1215 | dev_err(pcdev->dev, "%s called with no active buffer!\n", | |
1216 | __func__); | |
1217 | goto out; | |
1218 | } | |
1219 | ||
1220 | vb = &pcdev->active->vb; | |
1221 | buf = container_of(vb, struct mx2_buffer, vb); | |
1222 | WARN_ON(list_empty(&vb->queue)); | |
1223 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, | |
1224 | vb, vb->baddr, vb->bsize); | |
1225 | ||
1226 | /* _init is used to debug races, see comment in pxa_camera_reqbufs() */ | |
1227 | list_del_init(&vb->queue); | |
1228 | vb->state = state; | |
1229 | do_gettimeofday(&vb->ts); | |
1230 | vb->field_count++; | |
1231 | ||
1232 | wake_up(&vb->done); | |
1233 | ||
1234 | if (list_empty(&pcdev->capture)) { | |
1235 | pcdev->active = NULL; | |
1236 | goto out; | |
1237 | } | |
1238 | ||
1239 | pcdev->active = list_entry(pcdev->capture.next, | |
1240 | struct mx2_buffer, vb.queue); | |
1241 | ||
1242 | vb = &pcdev->active->vb; | |
1243 | vb->state = VIDEOBUF_ACTIVE; | |
1244 | ||
1245 | ret = imx_dma_setup_single(pcdev->dma, videobuf_to_dma_contig(vb), | |
1246 | vb->size, (u32)pcdev->base_dma + 0x10, DMA_MODE_READ); | |
1247 | ||
1248 | if (ret) { | |
1249 | vb->state = VIDEOBUF_ERROR; | |
1250 | pcdev->active = NULL; | |
1251 | wake_up(&vb->done); | |
1252 | } | |
1253 | ||
1254 | out: | |
1255 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
1256 | } | |
1257 | ||
1258 | static void mx27_camera_dma_err_callback(int channel, void *data, int err) | |
1259 | { | |
1260 | struct mx2_camera_dev *pcdev = data; | |
1261 | ||
1262 | mx27_camera_frame_done(pcdev, VIDEOBUF_ERROR); | |
1263 | } | |
1264 | ||
1265 | static void mx27_camera_dma_callback(int channel, void *data) | |
1266 | { | |
1267 | struct mx2_camera_dev *pcdev = data; | |
1268 | ||
1269 | mx27_camera_frame_done(pcdev, VIDEOBUF_DONE); | |
1270 | } | |
1271 | ||
1272 | #define DMA_REQ_CSI_RX 31 /* FIXME: Add this to a resource */ | |
1273 | ||
1274 | static int __devinit mx27_camera_dma_init(struct platform_device *pdev, | |
1275 | struct mx2_camera_dev *pcdev) | |
1276 | { | |
1277 | int err; | |
1278 | ||
1279 | pcdev->dma = imx_dma_request_by_prio("CSI RX DMA", DMA_PRIO_HIGH); | |
1280 | if (pcdev->dma < 0) { | |
1281 | dev_err(&pdev->dev, "%s failed to request DMA channel\n", | |
1282 | __func__); | |
1283 | return pcdev->dma; | |
1284 | } | |
1285 | ||
1286 | err = imx_dma_setup_handlers(pcdev->dma, mx27_camera_dma_callback, | |
1287 | mx27_camera_dma_err_callback, pcdev); | |
1288 | if (err) { | |
1289 | dev_err(&pdev->dev, "%s failed to set DMA callback\n", | |
1290 | __func__); | |
1291 | goto err_out; | |
1292 | } | |
1293 | ||
1294 | err = imx_dma_config_channel(pcdev->dma, | |
1295 | IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_FIFO, | |
1296 | IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR, | |
1297 | DMA_REQ_CSI_RX, 1); | |
1298 | if (err) { | |
1299 | dev_err(&pdev->dev, "%s failed to config DMA channel\n", | |
1300 | __func__); | |
1301 | goto err_out; | |
1302 | } | |
1303 | ||
1304 | imx_dma_config_burstlen(pcdev->dma, 64); | |
1305 | ||
1306 | return 0; | |
1307 | ||
1308 | err_out: | |
1309 | imx_dma_free(pcdev->dma); | |
1310 | ||
1311 | return err; | |
1312 | } | |
1313 | #endif /* CONFIG_MACH_MX27 */ | |
1314 | ||
1315 | static unsigned int mx2_camera_poll(struct file *file, poll_table *pt) | |
1316 | { | |
6b101926 | 1317 | struct soc_camera_device *icd = file->private_data; |
2066930d | 1318 | |
6b101926 | 1319 | return videobuf_poll_stream(file, &icd->vb_vidq, pt); |
2066930d BS |
1320 | } |
1321 | ||
1322 | static struct soc_camera_host_ops mx2_soc_camera_host_ops = { | |
1323 | .owner = THIS_MODULE, | |
1324 | .add = mx2_camera_add_device, | |
1325 | .remove = mx2_camera_remove_device, | |
1326 | .set_fmt = mx2_camera_set_fmt, | |
1327 | .set_crop = mx2_camera_set_crop, | |
f410991d | 1328 | .get_formats = mx2_camera_get_formats, |
2066930d BS |
1329 | .try_fmt = mx2_camera_try_fmt, |
1330 | .init_videobuf = mx2_camera_init_videobuf, | |
1331 | .reqbufs = mx2_camera_reqbufs, | |
1332 | .poll = mx2_camera_poll, | |
1333 | .querycap = mx2_camera_querycap, | |
1334 | .set_bus_param = mx2_camera_set_bus_param, | |
1335 | }; | |
1336 | ||
1337 | static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev, | |
1338 | int bufnum, int state) | |
1339 | { | |
f410991d JM |
1340 | u32 imgsize = pcdev->icd->user_height * pcdev->icd->user_width; |
1341 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; | |
2066930d BS |
1342 | struct mx2_buffer *buf; |
1343 | struct videobuf_buffer *vb; | |
1344 | unsigned long phys; | |
1345 | ||
1346 | if (!list_empty(&pcdev->active_bufs)) { | |
1347 | buf = list_entry(pcdev->active_bufs.next, | |
1348 | struct mx2_buffer, vb.queue); | |
1349 | ||
1350 | BUG_ON(buf->bufnum != bufnum); | |
1351 | ||
1352 | vb = &buf->vb; | |
1353 | #ifdef DEBUG | |
1354 | phys = videobuf_to_dma_contig(vb); | |
f410991d JM |
1355 | if (prp->cfg.channel == 1) { |
1356 | if (readl(pcdev->base_emma + PRP_DEST_RGB1_PTR + | |
1357 | 4 * bufnum) != phys) { | |
1358 | dev_err(pcdev->dev, "%p != %p\n", phys, | |
1359 | readl(pcdev->base_emma + | |
1360 | PRP_DEST_RGB1_PTR + | |
1361 | 4 * bufnum)); | |
1362 | } | |
1363 | } else { | |
1364 | if (readl(pcdev->base_emma + PRP_DEST_Y_PTR - | |
1365 | 0x14 * bufnum) != phys) { | |
1366 | dev_err(pcdev->dev, "%p != %p\n", phys, | |
1367 | readl(pcdev->base_emma + | |
1368 | PRP_DEST_Y_PTR - | |
1369 | 0x14 * bufnum)); | |
1370 | } | |
2066930d BS |
1371 | } |
1372 | #endif | |
1373 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, vb, | |
1374 | vb->baddr, vb->bsize); | |
1375 | ||
1376 | list_del(&vb->queue); | |
1377 | vb->state = state; | |
1378 | do_gettimeofday(&vb->ts); | |
ccd1a499 JM |
1379 | vb->field_count = pcdev->frame_count * 2; |
1380 | pcdev->frame_count++; | |
2066930d BS |
1381 | |
1382 | wake_up(&vb->done); | |
1383 | } | |
1384 | ||
1385 | if (list_empty(&pcdev->capture)) { | |
f410991d JM |
1386 | if (prp->cfg.channel == 1) { |
1387 | writel(pcdev->discard_buffer_dma, pcdev->base_emma + | |
1388 | PRP_DEST_RGB1_PTR + 4 * bufnum); | |
1389 | } else { | |
1390 | writel(pcdev->discard_buffer_dma, pcdev->base_emma + | |
1391 | PRP_DEST_Y_PTR - | |
1392 | 0x14 * bufnum); | |
1393 | if (prp->out_fmt == V4L2_PIX_FMT_YUV420) { | |
1394 | writel(pcdev->discard_buffer_dma + imgsize, | |
1395 | pcdev->base_emma + PRP_DEST_CB_PTR - | |
1396 | 0x14 * bufnum); | |
1397 | writel(pcdev->discard_buffer_dma + | |
1398 | ((5 * imgsize) / 4), pcdev->base_emma + | |
1399 | PRP_DEST_CR_PTR - 0x14 * bufnum); | |
1400 | } | |
1401 | } | |
2066930d BS |
1402 | return; |
1403 | } | |
1404 | ||
1405 | buf = list_entry(pcdev->capture.next, | |
1406 | struct mx2_buffer, vb.queue); | |
1407 | ||
cd9ebdbc | 1408 | buf->bufnum = !bufnum; |
2066930d BS |
1409 | |
1410 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); | |
1411 | ||
1412 | vb = &buf->vb; | |
1413 | vb->state = VIDEOBUF_ACTIVE; | |
1414 | ||
1415 | phys = videobuf_to_dma_contig(vb); | |
f410991d JM |
1416 | if (prp->cfg.channel == 1) { |
1417 | writel(phys, pcdev->base_emma + PRP_DEST_RGB1_PTR + 4 * bufnum); | |
1418 | } else { | |
1419 | writel(phys, pcdev->base_emma + | |
1420 | PRP_DEST_Y_PTR - 0x14 * bufnum); | |
1421 | if (prp->cfg.out_fmt == PRP_CNTL_CH2_OUT_YUV420) { | |
1422 | writel(phys + imgsize, pcdev->base_emma + | |
1423 | PRP_DEST_CB_PTR - 0x14 * bufnum); | |
1424 | writel(phys + ((5 * imgsize) / 4), pcdev->base_emma + | |
1425 | PRP_DEST_CR_PTR - 0x14 * bufnum); | |
1426 | } | |
1427 | } | |
2066930d BS |
1428 | } |
1429 | ||
1430 | static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data) | |
1431 | { | |
1432 | struct mx2_camera_dev *pcdev = data; | |
1433 | unsigned int status = readl(pcdev->base_emma + PRP_INTRSTATUS); | |
1434 | struct mx2_buffer *buf; | |
1435 | ||
1436 | if (status & (1 << 7)) { /* overflow */ | |
1437 | u32 cntl; | |
1438 | /* | |
1439 | * We only disable channel 1 here since this is the only | |
1440 | * enabled channel | |
1441 | * | |
1442 | * FIXME: the correct DMA overflow handling should be resetting | |
1443 | * the buffer, returning an error frame, and continuing with | |
1444 | * the next one. | |
1445 | */ | |
1446 | cntl = readl(pcdev->base_emma + PRP_CNTL); | |
f410991d JM |
1447 | writel(cntl & ~(PRP_CNTL_CH1EN | PRP_CNTL_CH2EN), |
1448 | pcdev->base_emma + PRP_CNTL); | |
2066930d BS |
1449 | writel(cntl, pcdev->base_emma + PRP_CNTL); |
1450 | } | |
f410991d JM |
1451 | if ((((status & (3 << 5)) == (3 << 5)) || |
1452 | ((status & (3 << 3)) == (3 << 3))) | |
2066930d BS |
1453 | && !list_empty(&pcdev->active_bufs)) { |
1454 | /* | |
1455 | * Both buffers have triggered, process the one we're expecting | |
1456 | * to first | |
1457 | */ | |
1458 | buf = list_entry(pcdev->active_bufs.next, | |
1459 | struct mx2_buffer, vb.queue); | |
1460 | mx27_camera_frame_done_emma(pcdev, buf->bufnum, VIDEOBUF_DONE); | |
1461 | status &= ~(1 << (6 - buf->bufnum)); /* mark processed */ | |
1462 | } | |
f410991d | 1463 | if ((status & (1 << 6)) || (status & (1 << 4))) |
2066930d | 1464 | mx27_camera_frame_done_emma(pcdev, 0, VIDEOBUF_DONE); |
f410991d | 1465 | if ((status & (1 << 5)) || (status & (1 << 3))) |
2066930d BS |
1466 | mx27_camera_frame_done_emma(pcdev, 1, VIDEOBUF_DONE); |
1467 | ||
1468 | writel(status, pcdev->base_emma + PRP_INTRSTATUS); | |
1469 | ||
1470 | return IRQ_HANDLED; | |
1471 | } | |
1472 | ||
1473 | static int __devinit mx27_camera_emma_init(struct mx2_camera_dev *pcdev) | |
1474 | { | |
1475 | struct resource *res_emma = pcdev->res_emma; | |
1476 | int err = 0; | |
1477 | ||
1478 | if (!request_mem_region(res_emma->start, resource_size(res_emma), | |
1479 | MX2_CAM_DRV_NAME)) { | |
1480 | err = -EBUSY; | |
1481 | goto out; | |
1482 | } | |
1483 | ||
1484 | pcdev->base_emma = ioremap(res_emma->start, resource_size(res_emma)); | |
1485 | if (!pcdev->base_emma) { | |
1486 | err = -ENOMEM; | |
1487 | goto exit_release; | |
1488 | } | |
1489 | ||
1490 | err = request_irq(pcdev->irq_emma, mx27_camera_emma_irq, 0, | |
1491 | MX2_CAM_DRV_NAME, pcdev); | |
1492 | if (err) { | |
1493 | dev_err(pcdev->dev, "Camera EMMA interrupt register failed \n"); | |
1494 | goto exit_iounmap; | |
1495 | } | |
1496 | ||
1497 | pcdev->clk_emma = clk_get(NULL, "emma"); | |
1498 | if (IS_ERR(pcdev->clk_emma)) { | |
1499 | err = PTR_ERR(pcdev->clk_emma); | |
1500 | goto exit_free_irq; | |
1501 | } | |
1502 | ||
1503 | clk_enable(pcdev->clk_emma); | |
1504 | ||
1505 | err = mx27_camera_emma_prp_reset(pcdev); | |
1506 | if (err) | |
1507 | goto exit_clk_emma_put; | |
1508 | ||
1509 | return err; | |
1510 | ||
1511 | exit_clk_emma_put: | |
1512 | clk_disable(pcdev->clk_emma); | |
1513 | clk_put(pcdev->clk_emma); | |
1514 | exit_free_irq: | |
1515 | free_irq(pcdev->irq_emma, pcdev); | |
1516 | exit_iounmap: | |
1517 | iounmap(pcdev->base_emma); | |
1518 | exit_release: | |
1519 | release_mem_region(res_emma->start, resource_size(res_emma)); | |
1520 | out: | |
1521 | return err; | |
1522 | } | |
1523 | ||
1524 | static int __devinit mx2_camera_probe(struct platform_device *pdev) | |
1525 | { | |
1526 | struct mx2_camera_dev *pcdev; | |
1527 | struct resource *res_csi, *res_emma; | |
1528 | void __iomem *base_csi; | |
1529 | int irq_csi, irq_emma; | |
1530 | irq_handler_t mx2_cam_irq_handler = cpu_is_mx25() ? mx25_camera_irq | |
1531 | : mx27_camera_irq; | |
1532 | int err = 0; | |
1533 | ||
1534 | dev_dbg(&pdev->dev, "initialising\n"); | |
1535 | ||
1536 | res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1537 | irq_csi = platform_get_irq(pdev, 0); | |
1538 | if (res_csi == NULL || irq_csi < 0) { | |
1539 | dev_err(&pdev->dev, "Missing platform resources data\n"); | |
1540 | err = -ENODEV; | |
1541 | goto exit; | |
1542 | } | |
1543 | ||
1544 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
1545 | if (!pcdev) { | |
1546 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
1547 | err = -ENOMEM; | |
1548 | goto exit; | |
1549 | } | |
1550 | ||
1551 | pcdev->clk_csi = clk_get(&pdev->dev, NULL); | |
1552 | if (IS_ERR(pcdev->clk_csi)) { | |
1553 | err = PTR_ERR(pcdev->clk_csi); | |
1554 | goto exit_kfree; | |
1555 | } | |
1556 | ||
1557 | dev_dbg(&pdev->dev, "Camera clock frequency: %ld\n", | |
1558 | clk_get_rate(pcdev->clk_csi)); | |
1559 | ||
1560 | /* Initialize DMA */ | |
1561 | #ifdef CONFIG_MACH_MX27 | |
1562 | if (cpu_is_mx27()) { | |
1563 | err = mx27_camera_dma_init(pdev, pcdev); | |
1564 | if (err) | |
1565 | goto exit_clk_put; | |
1566 | } | |
1567 | #endif /* CONFIG_MACH_MX27 */ | |
1568 | ||
1569 | pcdev->res_csi = res_csi; | |
1570 | pcdev->pdata = pdev->dev.platform_data; | |
1571 | if (pcdev->pdata) { | |
1572 | long rate; | |
1573 | ||
1574 | pcdev->platform_flags = pcdev->pdata->flags; | |
1575 | ||
1576 | rate = clk_round_rate(pcdev->clk_csi, pcdev->pdata->clk * 2); | |
1577 | if (rate <= 0) { | |
1578 | err = -ENODEV; | |
1579 | goto exit_dma_free; | |
1580 | } | |
1581 | err = clk_set_rate(pcdev->clk_csi, rate); | |
1582 | if (err < 0) | |
1583 | goto exit_dma_free; | |
1584 | } | |
1585 | ||
1586 | INIT_LIST_HEAD(&pcdev->capture); | |
1587 | INIT_LIST_HEAD(&pcdev->active_bufs); | |
1588 | spin_lock_init(&pcdev->lock); | |
1589 | ||
1590 | /* | |
1591 | * Request the regions. | |
1592 | */ | |
1593 | if (!request_mem_region(res_csi->start, resource_size(res_csi), | |
1594 | MX2_CAM_DRV_NAME)) { | |
1595 | err = -EBUSY; | |
1596 | goto exit_dma_free; | |
1597 | } | |
1598 | ||
1599 | base_csi = ioremap(res_csi->start, resource_size(res_csi)); | |
1600 | if (!base_csi) { | |
1601 | err = -ENOMEM; | |
1602 | goto exit_release; | |
1603 | } | |
1604 | pcdev->irq_csi = irq_csi; | |
1605 | pcdev->base_csi = base_csi; | |
1606 | pcdev->base_dma = res_csi->start; | |
1607 | pcdev->dev = &pdev->dev; | |
1608 | ||
1609 | err = request_irq(pcdev->irq_csi, mx2_cam_irq_handler, 0, | |
1610 | MX2_CAM_DRV_NAME, pcdev); | |
1611 | if (err) { | |
1612 | dev_err(pcdev->dev, "Camera interrupt register failed \n"); | |
1613 | goto exit_iounmap; | |
1614 | } | |
1615 | ||
1616 | if (cpu_is_mx27()) { | |
1617 | /* EMMA support */ | |
1618 | res_emma = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1619 | irq_emma = platform_get_irq(pdev, 1); | |
1620 | ||
1621 | if (res_emma && irq_emma >= 0) { | |
1622 | dev_info(&pdev->dev, "Using EMMA\n"); | |
1623 | pcdev->use_emma = 1; | |
1624 | pcdev->res_emma = res_emma; | |
1625 | pcdev->irq_emma = irq_emma; | |
1626 | if (mx27_camera_emma_init(pcdev)) | |
1627 | goto exit_free_irq; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | pcdev->soc_host.drv_name = MX2_CAM_DRV_NAME, | |
1632 | pcdev->soc_host.ops = &mx2_soc_camera_host_ops, | |
1633 | pcdev->soc_host.priv = pcdev; | |
1634 | pcdev->soc_host.v4l2_dev.dev = &pdev->dev; | |
1635 | pcdev->soc_host.nr = pdev->id; | |
1636 | err = soc_camera_host_register(&pcdev->soc_host); | |
1637 | if (err) | |
1638 | goto exit_free_emma; | |
1639 | ||
45f4d4e8 MG |
1640 | dev_info(&pdev->dev, "MX2 Camera (CSI) driver probed, clock frequency: %ld\n", |
1641 | clk_get_rate(pcdev->clk_csi)); | |
1642 | ||
2066930d BS |
1643 | return 0; |
1644 | ||
1645 | exit_free_emma: | |
1646 | if (mx27_camera_emma(pcdev)) { | |
1647 | free_irq(pcdev->irq_emma, pcdev); | |
1648 | clk_disable(pcdev->clk_emma); | |
1649 | clk_put(pcdev->clk_emma); | |
1650 | iounmap(pcdev->base_emma); | |
1651 | release_mem_region(res_emma->start, resource_size(res_emma)); | |
1652 | } | |
1653 | exit_free_irq: | |
1654 | free_irq(pcdev->irq_csi, pcdev); | |
1655 | exit_iounmap: | |
1656 | iounmap(base_csi); | |
1657 | exit_release: | |
1658 | release_mem_region(res_csi->start, resource_size(res_csi)); | |
1659 | exit_dma_free: | |
1660 | #ifdef CONFIG_MACH_MX27 | |
1661 | if (cpu_is_mx27()) | |
1662 | imx_dma_free(pcdev->dma); | |
1663 | exit_clk_put: | |
1664 | clk_put(pcdev->clk_csi); | |
1665 | #endif /* CONFIG_MACH_MX27 */ | |
1666 | exit_kfree: | |
1667 | kfree(pcdev); | |
1668 | exit: | |
1669 | return err; | |
1670 | } | |
1671 | ||
1672 | static int __devexit mx2_camera_remove(struct platform_device *pdev) | |
1673 | { | |
1674 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); | |
1675 | struct mx2_camera_dev *pcdev = container_of(soc_host, | |
1676 | struct mx2_camera_dev, soc_host); | |
1677 | struct resource *res; | |
1678 | ||
1679 | clk_put(pcdev->clk_csi); | |
1680 | #ifdef CONFIG_MACH_MX27 | |
1681 | if (cpu_is_mx27()) | |
1682 | imx_dma_free(pcdev->dma); | |
1683 | #endif /* CONFIG_MACH_MX27 */ | |
1684 | free_irq(pcdev->irq_csi, pcdev); | |
1685 | if (mx27_camera_emma(pcdev)) | |
1686 | free_irq(pcdev->irq_emma, pcdev); | |
1687 | ||
1688 | soc_camera_host_unregister(&pcdev->soc_host); | |
1689 | ||
1690 | iounmap(pcdev->base_csi); | |
1691 | ||
1692 | if (mx27_camera_emma(pcdev)) { | |
1693 | clk_disable(pcdev->clk_emma); | |
1694 | clk_put(pcdev->clk_emma); | |
1695 | iounmap(pcdev->base_emma); | |
1696 | res = pcdev->res_emma; | |
1697 | release_mem_region(res->start, resource_size(res)); | |
1698 | } | |
1699 | ||
1700 | res = pcdev->res_csi; | |
1701 | release_mem_region(res->start, resource_size(res)); | |
1702 | ||
1703 | kfree(pcdev); | |
1704 | ||
1705 | dev_info(&pdev->dev, "MX2 Camera driver unloaded\n"); | |
1706 | ||
1707 | return 0; | |
1708 | } | |
1709 | ||
1710 | static struct platform_driver mx2_camera_driver = { | |
1711 | .driver = { | |
1712 | .name = MX2_CAM_DRV_NAME, | |
1713 | }, | |
1714 | .remove = __devexit_p(mx2_camera_remove), | |
1715 | }; | |
1716 | ||
1717 | ||
1718 | static int __init mx2_camera_init(void) | |
1719 | { | |
1720 | return platform_driver_probe(&mx2_camera_driver, &mx2_camera_probe); | |
1721 | } | |
1722 | ||
1723 | static void __exit mx2_camera_exit(void) | |
1724 | { | |
1725 | return platform_driver_unregister(&mx2_camera_driver); | |
1726 | } | |
1727 | ||
1728 | module_init(mx2_camera_init); | |
1729 | module_exit(mx2_camera_exit); | |
1730 | ||
1731 | MODULE_DESCRIPTION("i.MX27/i.MX25 SoC Camera Host driver"); | |
1732 | MODULE_AUTHOR("Sascha Hauer <sha@pengutronix.de>"); | |
1733 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 1734 | MODULE_VERSION(MX2_CAM_VERSION); |