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-rw-r--r--drivers/media/video/omap3isp/ispccp2.c1173
-rw-r--r--drivers/media/video/omap3isp/ispccp2.h98
-rw-r--r--drivers/media/video/omap3isp/ispcsi2.c1317
-rw-r--r--drivers/media/video/omap3isp/ispcsi2.h166
-rw-r--r--drivers/media/video/omap3isp/ispcsiphy.c247
-rw-r--r--drivers/media/video/omap3isp/ispcsiphy.h74
6 files changed, 3075 insertions, 0 deletions
diff --git a/drivers/media/video/omap3isp/ispccp2.c b/drivers/media/video/omap3isp/ispccp2.c
new file mode 100644
index 000000000000..0efef2e78d93
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispccp2.c
@@ -0,0 +1,1173 @@
1/*
2 * ispccp2.c
3 *
4 * TI OMAP3 ISP - CCP2 module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2010 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#include <linux/delay.h>
28#include <linux/device.h>
29#include <linux/mm.h>
30#include <linux/module.h>
31#include <linux/mutex.h>
32#include <linux/uaccess.h>
33
34#include "isp.h"
35#include "ispreg.h"
36#include "ispccp2.h"
37
38/* Number of LCX channels */
39#define CCP2_LCx_CHANS_NUM 3
40/* Max/Min size for CCP2 video port */
41#define ISPCCP2_DAT_START_MIN 0
42#define ISPCCP2_DAT_START_MAX 4095
43#define ISPCCP2_DAT_SIZE_MIN 0
44#define ISPCCP2_DAT_SIZE_MAX 4095
45#define ISPCCP2_VPCLK_FRACDIV 65536
46#define ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP 0x12
47#define ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP 0x16
48/* Max/Min size for CCP2 memory channel */
49#define ISPCCP2_LCM_HSIZE_COUNT_MIN 16
50#define ISPCCP2_LCM_HSIZE_COUNT_MAX 8191
51#define ISPCCP2_LCM_HSIZE_SKIP_MIN 0
52#define ISPCCP2_LCM_HSIZE_SKIP_MAX 8191
53#define ISPCCP2_LCM_VSIZE_MIN 1
54#define ISPCCP2_LCM_VSIZE_MAX 8191
55#define ISPCCP2_LCM_HWORDS_MIN 1
56#define ISPCCP2_LCM_HWORDS_MAX 4095
57#define ISPCCP2_LCM_CTRL_BURST_SIZE_32X 5
58#define ISPCCP2_LCM_CTRL_READ_THROTTLE_FULL 0
59#define ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 2
60#define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 2
61#define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 3
62#define ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 3
63#define ISPCCP2_LCM_CTRL_DST_PORT_VP 0
64#define ISPCCP2_LCM_CTRL_DST_PORT_MEM 1
65
66/* Set only the required bits */
67#define BIT_SET(var, shift, mask, val) \
68 do { \
69 var = ((var) & ~((mask) << (shift))) \
70 | ((val) << (shift)); \
71 } while (0)
72
73/*
74 * ccp2_print_status - Print current CCP2 module register values.
75 */
76#define CCP2_PRINT_REGISTER(isp, name)\
77 dev_dbg(isp->dev, "###CCP2 " #name "=0x%08x\n", \
78 isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_##name))
79
80static void ccp2_print_status(struct isp_ccp2_device *ccp2)
81{
82 struct isp_device *isp = to_isp_device(ccp2);
83
84 dev_dbg(isp->dev, "-------------CCP2 Register dump-------------\n");
85
86 CCP2_PRINT_REGISTER(isp, SYSCONFIG);
87 CCP2_PRINT_REGISTER(isp, SYSSTATUS);
88 CCP2_PRINT_REGISTER(isp, LC01_IRQENABLE);
89 CCP2_PRINT_REGISTER(isp, LC01_IRQSTATUS);
90 CCP2_PRINT_REGISTER(isp, LC23_IRQENABLE);
91 CCP2_PRINT_REGISTER(isp, LC23_IRQSTATUS);
92 CCP2_PRINT_REGISTER(isp, LCM_IRQENABLE);
93 CCP2_PRINT_REGISTER(isp, LCM_IRQSTATUS);
94 CCP2_PRINT_REGISTER(isp, CTRL);
95 CCP2_PRINT_REGISTER(isp, LCx_CTRL(0));
96 CCP2_PRINT_REGISTER(isp, LCx_CODE(0));
97 CCP2_PRINT_REGISTER(isp, LCx_STAT_START(0));
98 CCP2_PRINT_REGISTER(isp, LCx_STAT_SIZE(0));
99 CCP2_PRINT_REGISTER(isp, LCx_SOF_ADDR(0));
100 CCP2_PRINT_REGISTER(isp, LCx_EOF_ADDR(0));
101 CCP2_PRINT_REGISTER(isp, LCx_DAT_START(0));
102 CCP2_PRINT_REGISTER(isp, LCx_DAT_SIZE(0));
103 CCP2_PRINT_REGISTER(isp, LCx_DAT_PING_ADDR(0));
104 CCP2_PRINT_REGISTER(isp, LCx_DAT_PONG_ADDR(0));
105 CCP2_PRINT_REGISTER(isp, LCx_DAT_OFST(0));
106 CCP2_PRINT_REGISTER(isp, LCM_CTRL);
107 CCP2_PRINT_REGISTER(isp, LCM_VSIZE);
108 CCP2_PRINT_REGISTER(isp, LCM_HSIZE);
109 CCP2_PRINT_REGISTER(isp, LCM_PREFETCH);
110 CCP2_PRINT_REGISTER(isp, LCM_SRC_ADDR);
111 CCP2_PRINT_REGISTER(isp, LCM_SRC_OFST);
112 CCP2_PRINT_REGISTER(isp, LCM_DST_ADDR);
113 CCP2_PRINT_REGISTER(isp, LCM_DST_OFST);
114
115 dev_dbg(isp->dev, "--------------------------------------------\n");
116}
117
118/*
119 * ccp2_reset - Reset the CCP2
120 * @ccp2: pointer to ISP CCP2 device
121 */
122static void ccp2_reset(struct isp_ccp2_device *ccp2)
123{
124 struct isp_device *isp = to_isp_device(ccp2);
125 int i = 0;
126
127 /* Reset the CSI1/CCP2B and wait for reset to complete */
128 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG,
129 ISPCCP2_SYSCONFIG_SOFT_RESET);
130 while (!(isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSSTATUS) &
131 ISPCCP2_SYSSTATUS_RESET_DONE)) {
132 udelay(10);
133 if (i++ > 10) { /* try read 10 times */
134 dev_warn(isp->dev,
135 "omap3_isp: timeout waiting for ccp2 reset\n");
136 break;
137 }
138 }
139}
140
141/*
142 * ccp2_pwr_cfg - Configure the power mode settings
143 * @ccp2: pointer to ISP CCP2 device
144 */
145static void ccp2_pwr_cfg(struct isp_ccp2_device *ccp2)
146{
147 struct isp_device *isp = to_isp_device(ccp2);
148
149 isp_reg_writel(isp, ISPCCP2_SYSCONFIG_MSTANDBY_MODE_SMART |
150 ((isp->revision == ISP_REVISION_15_0 && isp->autoidle) ?
151 ISPCCP2_SYSCONFIG_AUTO_IDLE : 0),
152 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG);
153}
154
155/*
156 * ccp2_if_enable - Enable CCP2 interface.
157 * @ccp2: pointer to ISP CCP2 device
158 * @enable: enable/disable flag
159 */
160static void ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable)
161{
162 struct isp_device *isp = to_isp_device(ccp2);
163 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
164 int i;
165
166 /* Enable/Disable all the LCx channels */
167 for (i = 0; i < CCP2_LCx_CHANS_NUM; i++)
168 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(i),
169 ISPCCP2_LCx_CTRL_CHAN_EN,
170 enable ? ISPCCP2_LCx_CTRL_CHAN_EN : 0);
171
172 /* Enable/Disable ccp2 interface in ccp2 mode */
173 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL,
174 ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN,
175 enable ? (ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN) : 0);
176
177 /* For frame count propagation */
178 if (pipe->do_propagation) {
179 /* We may want the Frame Start IRQ from LC0 */
180 if (enable)
181 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2,
182 ISPCCP2_LC01_IRQENABLE,
183 ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ);
184 else
185 isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCP2,
186 ISPCCP2_LC01_IRQENABLE,
187 ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ);
188 }
189}
190
191/*
192 * ccp2_mem_enable - Enable CCP2 memory interface.
193 * @ccp2: pointer to ISP CCP2 device
194 * @enable: enable/disable flag
195 */
196static void ccp2_mem_enable(struct isp_ccp2_device *ccp2, u8 enable)
197{
198 struct isp_device *isp = to_isp_device(ccp2);
199
200 if (enable)
201 ccp2_if_enable(ccp2, 0);
202
203 /* Enable/Disable ccp2 interface in ccp2 mode */
204 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL,
205 ISPCCP2_CTRL_MODE, enable ? ISPCCP2_CTRL_MODE : 0);
206
207 isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL,
208 ISPCCP2_LCM_CTRL_CHAN_EN,
209 enable ? ISPCCP2_LCM_CTRL_CHAN_EN : 0);
210}
211
212/*
213 * ccp2_phyif_config - Initialize CCP2 phy interface config
214 * @ccp2: Pointer to ISP CCP2 device
215 * @config: CCP2 platform data
216 *
217 * Configure the CCP2 physical interface module from platform data.
218 *
219 * Returns -EIO if strobe is chosen in CSI1 mode, or 0 on success.
220 */
221static int ccp2_phyif_config(struct isp_ccp2_device *ccp2,
222 const struct isp_ccp2_platform_data *pdata)
223{
224 struct isp_device *isp = to_isp_device(ccp2);
225 u32 val;
226
227 /* CCP2B mode */
228 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL) |
229 ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE;
230 /* Data/strobe physical layer */
231 BIT_SET(val, ISPCCP2_CTRL_PHY_SEL_SHIFT, ISPCCP2_CTRL_PHY_SEL_MASK,
232 pdata->phy_layer);
233 BIT_SET(val, ISPCCP2_CTRL_INV_SHIFT, ISPCCP2_CTRL_INV_MASK,
234 pdata->strobe_clk_pol);
235 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
236
237 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
238 if (!(val & ISPCCP2_CTRL_MODE)) {
239 if (pdata->ccp2_mode)
240 dev_warn(isp->dev, "OMAP3 CCP2 bus not available\n");
241 if (pdata->phy_layer == ISPCCP2_CTRL_PHY_SEL_STROBE)
242 /* Strobe mode requires CCP2 */
243 return -EIO;
244 }
245
246 return 0;
247}
248
249/*
250 * ccp2_vp_config - Initialize CCP2 video port interface.
251 * @ccp2: Pointer to ISP CCP2 device
252 * @vpclk_div: Video port divisor
253 *
254 * Configure the CCP2 video port with the given clock divisor. The valid divisor
255 * values depend on the ISP revision:
256 *
257 * - revision 1.0 and 2.0 1 to 4
258 * - revision 15.0 1 to 65536
259 *
260 * The exact divisor value used might differ from the requested value, as ISP
261 * revision 15.0 represent the divisor by 65536 divided by an integer.
262 */
263static void ccp2_vp_config(struct isp_ccp2_device *ccp2,
264 unsigned int vpclk_div)
265{
266 struct isp_device *isp = to_isp_device(ccp2);
267 u32 val;
268
269 /* ISPCCP2_CTRL Video port */
270 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
271 val |= ISPCCP2_CTRL_VP_ONLY_EN; /* Disable the memory write port */
272
273 if (isp->revision == ISP_REVISION_15_0) {
274 vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 65536);
275 vpclk_div = min(ISPCCP2_VPCLK_FRACDIV / vpclk_div, 65535U);
276 BIT_SET(val, ISPCCP2_CTRL_VPCLK_DIV_SHIFT,
277 ISPCCP2_CTRL_VPCLK_DIV_MASK, vpclk_div);
278 } else {
279 vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 4);
280 BIT_SET(val, ISPCCP2_CTRL_VP_OUT_CTRL_SHIFT,
281 ISPCCP2_CTRL_VP_OUT_CTRL_MASK, vpclk_div - 1);
282 }
283
284 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
285}
286
287/*
288 * ccp2_lcx_config - Initialize CCP2 logical channel interface.
289 * @ccp2: Pointer to ISP CCP2 device
290 * @config: Pointer to ISP LCx config structure.
291 *
292 * This will analyze the parameters passed by the interface config
293 * and configure CSI1/CCP2 logical channel
294 *
295 */
296static void ccp2_lcx_config(struct isp_ccp2_device *ccp2,
297 struct isp_interface_lcx_config *config)
298{
299 struct isp_device *isp = to_isp_device(ccp2);
300 u32 val, format;
301
302 switch (config->format) {
303 case V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8:
304 format = ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP;
305 break;
306 case V4L2_MBUS_FMT_SGRBG10_1X10:
307 default:
308 format = ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP; /* RAW10+VP */
309 break;
310 }
311 /* ISPCCP2_LCx_CTRL logical channel #0 */
312 val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0))
313 | (ISPCCP2_LCx_CTRL_REGION_EN); /* Region */
314
315 if (isp->revision == ISP_REVISION_15_0) {
316 /* CRC */
317 BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT_15_0,
318 ISPCCP2_LCx_CTRL_CRC_MASK,
319 config->crc);
320 /* Format = RAW10+VP or RAW8+DPCM10+VP*/
321 BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT_15_0,
322 ISPCCP2_LCx_CTRL_FORMAT_MASK_15_0, format);
323 } else {
324 BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT,
325 ISPCCP2_LCx_CTRL_CRC_MASK,
326 config->crc);
327
328 BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT,
329 ISPCCP2_LCx_CTRL_FORMAT_MASK, format);
330 }
331 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0));
332
333 /* ISPCCP2_DAT_START for logical channel #0 */
334 isp_reg_writel(isp, config->data_start << ISPCCP2_LCx_DAT_SHIFT,
335 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_START(0));
336
337 /* ISPCCP2_DAT_SIZE for logical channel #0 */
338 isp_reg_writel(isp, config->data_size << ISPCCP2_LCx_DAT_SHIFT,
339 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_SIZE(0));
340
341 /* Enable error IRQs for logical channel #0 */
342 val = ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ |
343 ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ |
344 ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ |
345 ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ |
346 ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ |
347 ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ |
348 ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ;
349
350 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQSTATUS);
351 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, val);
352}
353
354/*
355 * ccp2_if_configure - Configure ccp2 with data from sensor
356 * @ccp2: Pointer to ISP CCP2 device
357 *
358 * Return 0 on success or a negative error code
359 */
360static int ccp2_if_configure(struct isp_ccp2_device *ccp2)
361{
362 const struct isp_v4l2_subdevs_group *pdata;
363 struct v4l2_mbus_framefmt *format;
364 struct media_pad *pad;
365 struct v4l2_subdev *sensor;
366 u32 lines = 0;
367 int ret;
368
369 ccp2_pwr_cfg(ccp2);
370
371 pad = media_entity_remote_source(&ccp2->pads[CCP2_PAD_SINK]);
372 sensor = media_entity_to_v4l2_subdev(pad->entity);
373 pdata = sensor->host_priv;
374
375 ret = ccp2_phyif_config(ccp2, &pdata->bus.ccp2);
376 if (ret < 0)
377 return ret;
378
379 ccp2_vp_config(ccp2, pdata->bus.ccp2.vpclk_div + 1);
380
381 v4l2_subdev_call(sensor, sensor, g_skip_top_lines, &lines);
382
383 format = &ccp2->formats[CCP2_PAD_SINK];
384
385 ccp2->if_cfg.data_start = lines;
386 ccp2->if_cfg.crc = pdata->bus.ccp2.crc;
387 ccp2->if_cfg.format = format->code;
388 ccp2->if_cfg.data_size = format->height;
389
390 ccp2_lcx_config(ccp2, &ccp2->if_cfg);
391
392 return 0;
393}
394
395static int ccp2_adjust_bandwidth(struct isp_ccp2_device *ccp2)
396{
397 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
398 struct isp_device *isp = to_isp_device(ccp2);
399 const struct v4l2_mbus_framefmt *ofmt = &ccp2->formats[CCP2_PAD_SOURCE];
400 unsigned long l3_ick = pipe->l3_ick;
401 struct v4l2_fract *timeperframe;
402 unsigned int vpclk_div = 2;
403 unsigned int value;
404 u64 bound;
405 u64 area;
406
407 /* Compute the minimum clock divisor, based on the pipeline maximum
408 * data rate. This is an absolute lower bound if we don't want SBL
409 * overflows, so round the value up.
410 */
411 vpclk_div = max_t(unsigned int, DIV_ROUND_UP(l3_ick, pipe->max_rate),
412 vpclk_div);
413
414 /* Compute the maximum clock divisor, based on the requested frame rate.
415 * This is a soft lower bound to achieve a frame rate equal or higher
416 * than the requested value, so round the value down.
417 */
418 timeperframe = &pipe->max_timeperframe;
419
420 if (timeperframe->numerator) {
421 area = ofmt->width * ofmt->height;
422 bound = div_u64(area * timeperframe->denominator,
423 timeperframe->numerator);
424 value = min_t(u64, bound, l3_ick);
425 vpclk_div = max_t(unsigned int, l3_ick / value, vpclk_div);
426 }
427
428 dev_dbg(isp->dev, "%s: minimum clock divisor = %u\n", __func__,
429 vpclk_div);
430
431 return vpclk_div;
432}
433
434/*
435 * ccp2_mem_configure - Initialize CCP2 memory input/output interface
436 * @ccp2: Pointer to ISP CCP2 device
437 * @config: Pointer to ISP mem interface config structure
438 *
439 * This will analyze the parameters passed by the interface config
440 * structure, and configure the respective registers for proper
441 * CSI1/CCP2 memory input.
442 */
443static void ccp2_mem_configure(struct isp_ccp2_device *ccp2,
444 struct isp_interface_mem_config *config)
445{
446 struct isp_device *isp = to_isp_device(ccp2);
447 u32 sink_pixcode = ccp2->formats[CCP2_PAD_SINK].code;
448 u32 source_pixcode = ccp2->formats[CCP2_PAD_SOURCE].code;
449 unsigned int dpcm_decompress = 0;
450 u32 val, hwords;
451
452 if (sink_pixcode != source_pixcode &&
453 sink_pixcode == V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8)
454 dpcm_decompress = 1;
455
456 ccp2_pwr_cfg(ccp2);
457
458 /* Hsize, Skip */
459 isp_reg_writel(isp, ISPCCP2_LCM_HSIZE_SKIP_MIN |
460 (config->hsize_count << ISPCCP2_LCM_HSIZE_SHIFT),
461 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_HSIZE);
462
463 /* Vsize, no. of lines */
464 isp_reg_writel(isp, config->vsize_count << ISPCCP2_LCM_VSIZE_SHIFT,
465 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_VSIZE);
466
467 if (ccp2->video_in.bpl_padding == 0)
468 config->src_ofst = 0;
469 else
470 config->src_ofst = ccp2->video_in.bpl_value;
471
472 isp_reg_writel(isp, config->src_ofst, OMAP3_ISP_IOMEM_CCP2,
473 ISPCCP2_LCM_SRC_OFST);
474
475 /* Source and Destination formats */
476 val = ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 <<
477 ISPCCP2_LCM_CTRL_DST_FORMAT_SHIFT;
478
479 if (dpcm_decompress) {
480 /* source format is RAW8 */
481 val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 <<
482 ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT;
483
484 /* RAW8 + DPCM10 - simple predictor */
485 val |= ISPCCP2_LCM_CTRL_SRC_DPCM_PRED;
486
487 /* enable source DPCM decompression */
488 val |= ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 <<
489 ISPCCP2_LCM_CTRL_SRC_DECOMPR_SHIFT;
490 } else {
491 /* source format is RAW10 */
492 val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 <<
493 ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT;
494 }
495
496 /* Burst size to 32x64 */
497 val |= ISPCCP2_LCM_CTRL_BURST_SIZE_32X <<
498 ISPCCP2_LCM_CTRL_BURST_SIZE_SHIFT;
499
500 isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL);
501
502 /* Prefetch setup */
503 if (dpcm_decompress)
504 hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN +
505 config->hsize_count) >> 3;
506 else
507 hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN +
508 config->hsize_count) >> 2;
509
510 isp_reg_writel(isp, hwords << ISPCCP2_LCM_PREFETCH_SHIFT,
511 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_PREFETCH);
512
513 /* Video port */
514 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL,
515 ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE);
516 ccp2_vp_config(ccp2, ccp2_adjust_bandwidth(ccp2));
517
518 /* Clear LCM interrupts */
519 isp_reg_writel(isp, ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ |
520 ISPCCP2_LCM_IRQSTATUS_EOF_IRQ,
521 OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQSTATUS);
522
523 /* Enable LCM interupts */
524 isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQENABLE,
525 ISPCCP2_LCM_IRQSTATUS_EOF_IRQ |
526 ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ);
527}
528
529/*
530 * ccp2_set_inaddr - Sets memory address of input frame.
531 * @ccp2: Pointer to ISP CCP2 device
532 * @addr: 32bit memory address aligned on 32byte boundary.
533 *
534 * Configures the memory address from which the input frame is to be read.
535 */
536static void ccp2_set_inaddr(struct isp_ccp2_device *ccp2, u32 addr)
537{
538 struct isp_device *isp = to_isp_device(ccp2);
539
540 isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_SRC_ADDR);
541}
542
543/* -----------------------------------------------------------------------------
544 * Interrupt handling
545 */
546
547static void ccp2_isr_buffer(struct isp_ccp2_device *ccp2)
548{
549 struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
550 struct isp_buffer *buffer;
551
552 buffer = omap3isp_video_buffer_next(&ccp2->video_in, ccp2->error);
553 if (buffer != NULL)
554 ccp2_set_inaddr(ccp2, buffer->isp_addr);
555
556 pipe->state |= ISP_PIPELINE_IDLE_INPUT;
557
558 if (ccp2->state == ISP_PIPELINE_STREAM_SINGLESHOT) {
559 if (isp_pipeline_ready(pipe))
560 omap3isp_pipeline_set_stream(pipe,
561 ISP_PIPELINE_STREAM_SINGLESHOT);
562 }
563
564 ccp2->error = 0;
565}
566
567/*
568 * omap3isp_ccp2_isr - Handle ISP CCP2 interrupts
569 * @ccp2: Pointer to ISP CCP2 device
570 *
571 * This will handle the CCP2 interrupts
572 *
573 * Returns -EIO in case of error, or 0 on success.
574 */
575int omap3isp_ccp2_isr(struct isp_ccp2_device *ccp2)
576{
577 struct isp_device *isp = to_isp_device(ccp2);
578 int ret = 0;
579 static const u32 ISPCCP2_LC01_ERROR =
580 ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ |
581 ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ |
582 ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ |
583 ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ |
584 ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ |
585 ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ;
586 u32 lcx_irqstatus, lcm_irqstatus;
587
588 /* First clear the interrupts */
589 lcx_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2,
590 ISPCCP2_LC01_IRQSTATUS);
591 isp_reg_writel(isp, lcx_irqstatus, OMAP3_ISP_IOMEM_CCP2,
592 ISPCCP2_LC01_IRQSTATUS);
593
594 lcm_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2,
595 ISPCCP2_LCM_IRQSTATUS);
596 isp_reg_writel(isp, lcm_irqstatus, OMAP3_ISP_IOMEM_CCP2,
597 ISPCCP2_LCM_IRQSTATUS);
598 /* Errors */
599 if (lcx_irqstatus & ISPCCP2_LC01_ERROR) {
600 ccp2->error = 1;
601 dev_dbg(isp->dev, "CCP2 err:%x\n", lcx_irqstatus);
602 return -EIO;
603 }
604
605 if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ) {
606 ccp2->error = 1;
607 dev_dbg(isp->dev, "CCP2 OCP err:%x\n", lcm_irqstatus);
608 ret = -EIO;
609 }
610
611 if (omap3isp_module_sync_is_stopping(&ccp2->wait, &ccp2->stopping))
612 return 0;
613
614 /* Frame number propagation */
615 if (lcx_irqstatus & ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ) {
616 struct isp_pipeline *pipe =
617 to_isp_pipeline(&ccp2->subdev.entity);
618 if (pipe->do_propagation)
619 atomic_inc(&pipe->frame_number);
620 }
621
622 /* Handle queued buffers on frame end interrupts */
623 if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_EOF_IRQ)
624 ccp2_isr_buffer(ccp2);
625
626 return ret;
627}
628
629/* -----------------------------------------------------------------------------
630 * V4L2 subdev operations
631 */
632
633static const unsigned int ccp2_fmts[] = {
634 V4L2_MBUS_FMT_SGRBG10_1X10,
635 V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
636};
637
638/*
639 * __ccp2_get_format - helper function for getting ccp2 format
640 * @ccp2 : Pointer to ISP CCP2 device
641 * @fh : V4L2 subdev file handle
642 * @pad : pad number
643 * @which : wanted subdev format
644 * return format structure or NULL on error
645 */
646static struct v4l2_mbus_framefmt *
647__ccp2_get_format(struct isp_ccp2_device *ccp2, struct v4l2_subdev_fh *fh,
648 unsigned int pad, enum v4l2_subdev_format_whence which)
649{
650 if (which == V4L2_SUBDEV_FORMAT_TRY)
651 return v4l2_subdev_get_try_format(fh, pad);
652 else
653 return &ccp2->formats[pad];
654}
655
656/*
657 * ccp2_try_format - Handle try format by pad subdev method
658 * @ccp2 : Pointer to ISP CCP2 device
659 * @fh : V4L2 subdev file handle
660 * @pad : pad num
661 * @fmt : pointer to v4l2 mbus format structure
662 * @which : wanted subdev format
663 */
664static void ccp2_try_format(struct isp_ccp2_device *ccp2,
665 struct v4l2_subdev_fh *fh, unsigned int pad,
666 struct v4l2_mbus_framefmt *fmt,
667 enum v4l2_subdev_format_whence which)
668{
669 struct v4l2_mbus_framefmt *format;
670
671 switch (pad) {
672 case CCP2_PAD_SINK:
673 if (fmt->code != V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8)
674 fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
675
676 if (ccp2->input == CCP2_INPUT_SENSOR) {
677 fmt->width = clamp_t(u32, fmt->width,
678 ISPCCP2_DAT_START_MIN,
679 ISPCCP2_DAT_START_MAX);
680 fmt->height = clamp_t(u32, fmt->height,
681 ISPCCP2_DAT_SIZE_MIN,
682 ISPCCP2_DAT_SIZE_MAX);
683 } else if (ccp2->input == CCP2_INPUT_MEMORY) {
684 fmt->width = clamp_t(u32, fmt->width,
685 ISPCCP2_LCM_HSIZE_COUNT_MIN,
686 ISPCCP2_LCM_HSIZE_COUNT_MAX);
687 fmt->height = clamp_t(u32, fmt->height,
688 ISPCCP2_LCM_VSIZE_MIN,
689 ISPCCP2_LCM_VSIZE_MAX);
690 }
691 break;
692
693 case CCP2_PAD_SOURCE:
694 /* Source format - copy sink format and change pixel code
695 * to SGRBG10_1X10 as we don't support CCP2 write to memory.
696 * When CCP2 write to memory feature will be added this
697 * should be changed properly.
698 */
699 format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SINK, which);
700 memcpy(fmt, format, sizeof(*fmt));
701 fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
702 break;
703 }
704
705 fmt->field = V4L2_FIELD_NONE;
706 fmt->colorspace = V4L2_COLORSPACE_SRGB;
707}
708
709/*
710 * ccp2_enum_mbus_code - Handle pixel format enumeration
711 * @sd : pointer to v4l2 subdev structure
712 * @fh : V4L2 subdev file handle
713 * @code : pointer to v4l2_subdev_mbus_code_enum structure
714 * return -EINVAL or zero on success
715 */
716static int ccp2_enum_mbus_code(struct v4l2_subdev *sd,
717 struct v4l2_subdev_fh *fh,
718 struct v4l2_subdev_mbus_code_enum *code)
719{
720 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
721 struct v4l2_mbus_framefmt *format;
722
723 if (code->pad == CCP2_PAD_SINK) {
724 if (code->index >= ARRAY_SIZE(ccp2_fmts))
725 return -EINVAL;
726
727 code->code = ccp2_fmts[code->index];
728 } else {
729 if (code->index != 0)
730 return -EINVAL;
731
732 format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SINK,
733 V4L2_SUBDEV_FORMAT_TRY);
734 code->code = format->code;
735 }
736
737 return 0;
738}
739
740static int ccp2_enum_frame_size(struct v4l2_subdev *sd,
741 struct v4l2_subdev_fh *fh,
742 struct v4l2_subdev_frame_size_enum *fse)
743{
744 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
745 struct v4l2_mbus_framefmt format;
746
747 if (fse->index != 0)
748 return -EINVAL;
749
750 format.code = fse->code;
751 format.width = 1;
752 format.height = 1;
753 ccp2_try_format(ccp2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
754 fse->min_width = format.width;
755 fse->min_height = format.height;
756
757 if (format.code != fse->code)
758 return -EINVAL;
759
760 format.code = fse->code;
761 format.width = -1;
762 format.height = -1;
763 ccp2_try_format(ccp2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
764 fse->max_width = format.width;
765 fse->max_height = format.height;
766
767 return 0;
768}
769
770/*
771 * ccp2_get_format - Handle get format by pads subdev method
772 * @sd : pointer to v4l2 subdev structure
773 * @fh : V4L2 subdev file handle
774 * @fmt : pointer to v4l2 subdev format structure
775 * return -EINVAL or zero on sucess
776 */
777static int ccp2_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
778 struct v4l2_subdev_format *fmt)
779{
780 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
781 struct v4l2_mbus_framefmt *format;
782
783 format = __ccp2_get_format(ccp2, fh, fmt->pad, fmt->which);
784 if (format == NULL)
785 return -EINVAL;
786
787 fmt->format = *format;
788 return 0;
789}
790
791/*
792 * ccp2_set_format - Handle set format by pads subdev method
793 * @sd : pointer to v4l2 subdev structure
794 * @fh : V4L2 subdev file handle
795 * @fmt : pointer to v4l2 subdev format structure
796 * returns zero
797 */
798static int ccp2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
799 struct v4l2_subdev_format *fmt)
800{
801 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
802 struct v4l2_mbus_framefmt *format;
803
804 format = __ccp2_get_format(ccp2, fh, fmt->pad, fmt->which);
805 if (format == NULL)
806 return -EINVAL;
807
808 ccp2_try_format(ccp2, fh, fmt->pad, &fmt->format, fmt->which);
809 *format = fmt->format;
810
811 /* Propagate the format from sink to source */
812 if (fmt->pad == CCP2_PAD_SINK) {
813 format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SOURCE,
814 fmt->which);
815 *format = fmt->format;
816 ccp2_try_format(ccp2, fh, CCP2_PAD_SOURCE, format, fmt->which);
817 }
818
819 return 0;
820}
821
822/*
823 * ccp2_init_formats - Initialize formats on all pads
824 * @sd: ISP CCP2 V4L2 subdevice
825 * @fh: V4L2 subdev file handle
826 *
827 * Initialize all pad formats with default values. If fh is not NULL, try
828 * formats are initialized on the file handle. Otherwise active formats are
829 * initialized on the device.
830 */
831static int ccp2_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
832{
833 struct v4l2_subdev_format format;
834
835 memset(&format, 0, sizeof(format));
836 format.pad = CCP2_PAD_SINK;
837 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
838 format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
839 format.format.width = 4096;
840 format.format.height = 4096;
841 ccp2_set_format(sd, fh, &format);
842
843 return 0;
844}
845
846/*
847 * ccp2_s_stream - Enable/Disable streaming on ccp2 subdev
848 * @sd : pointer to v4l2 subdev structure
849 * @enable: 1 == Enable, 0 == Disable
850 * return zero
851 */
852static int ccp2_s_stream(struct v4l2_subdev *sd, int enable)
853{
854 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
855 struct isp_device *isp = to_isp_device(ccp2);
856 struct device *dev = to_device(ccp2);
857 int ret;
858
859 if (ccp2->state == ISP_PIPELINE_STREAM_STOPPED) {
860 if (enable == ISP_PIPELINE_STREAM_STOPPED)
861 return 0;
862 atomic_set(&ccp2->stopping, 0);
863 ccp2->error = 0;
864 }
865
866 switch (enable) {
867 case ISP_PIPELINE_STREAM_CONTINUOUS:
868 if (ccp2->phy) {
869 ret = omap3isp_csiphy_acquire(ccp2->phy);
870 if (ret < 0)
871 return ret;
872 }
873
874 ccp2_if_configure(ccp2);
875 ccp2_print_status(ccp2);
876
877 /* Enable CSI1/CCP2 interface */
878 ccp2_if_enable(ccp2, 1);
879 break;
880
881 case ISP_PIPELINE_STREAM_SINGLESHOT:
882 if (ccp2->state != ISP_PIPELINE_STREAM_SINGLESHOT) {
883 struct v4l2_mbus_framefmt *format;
884
885 format = &ccp2->formats[CCP2_PAD_SINK];
886
887 ccp2->mem_cfg.hsize_count = format->width;
888 ccp2->mem_cfg.vsize_count = format->height;
889 ccp2->mem_cfg.src_ofst = 0;
890
891 ccp2_mem_configure(ccp2, &ccp2->mem_cfg);
892 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI1_READ);
893 ccp2_print_status(ccp2);
894 }
895 ccp2_mem_enable(ccp2, 1);
896 break;
897
898 case ISP_PIPELINE_STREAM_STOPPED:
899 if (omap3isp_module_sync_idle(&sd->entity, &ccp2->wait,
900 &ccp2->stopping))
901 dev_dbg(dev, "%s: module stop timeout.\n", sd->name);
902 if (ccp2->input == CCP2_INPUT_MEMORY) {
903 ccp2_mem_enable(ccp2, 0);
904 omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CSI1_READ);
905 } else if (ccp2->input == CCP2_INPUT_SENSOR) {
906 /* Disable CSI1/CCP2 interface */
907 ccp2_if_enable(ccp2, 0);
908 if (ccp2->phy)
909 omap3isp_csiphy_release(ccp2->phy);
910 }
911 break;
912 }
913
914 ccp2->state = enable;
915 return 0;
916}
917
918/* subdev video operations */
919static const struct v4l2_subdev_video_ops ccp2_sd_video_ops = {
920 .s_stream = ccp2_s_stream,
921};
922
923/* subdev pad operations */
924static const struct v4l2_subdev_pad_ops ccp2_sd_pad_ops = {
925 .enum_mbus_code = ccp2_enum_mbus_code,
926 .enum_frame_size = ccp2_enum_frame_size,
927 .get_fmt = ccp2_get_format,
928 .set_fmt = ccp2_set_format,
929};
930
931/* subdev operations */
932static const struct v4l2_subdev_ops ccp2_sd_ops = {
933 .video = &ccp2_sd_video_ops,
934 .pad = &ccp2_sd_pad_ops,
935};
936
937/* subdev internal operations */
938static const struct v4l2_subdev_internal_ops ccp2_sd_internal_ops = {
939 .open = ccp2_init_formats,
940};
941
942/* --------------------------------------------------------------------------
943 * ISP ccp2 video device node
944 */
945
946/*
947 * ccp2_video_queue - Queue video buffer.
948 * @video : Pointer to isp video structure
949 * @buffer: Pointer to isp_buffer structure
950 * return -EIO or zero on success
951 */
952static int ccp2_video_queue(struct isp_video *video, struct isp_buffer *buffer)
953{
954 struct isp_ccp2_device *ccp2 = &video->isp->isp_ccp2;
955
956 ccp2_set_inaddr(ccp2, buffer->isp_addr);
957 return 0;
958}
959
960static const struct isp_video_operations ccp2_video_ops = {
961 .queue = ccp2_video_queue,
962};
963
964/* -----------------------------------------------------------------------------
965 * Media entity operations
966 */
967
968/*
969 * ccp2_link_setup - Setup ccp2 connections.
970 * @entity : Pointer to media entity structure
971 * @local : Pointer to local pad array
972 * @remote : Pointer to remote pad array
973 * @flags : Link flags
974 * return -EINVAL on error or zero on success
975 */
976static int ccp2_link_setup(struct media_entity *entity,
977 const struct media_pad *local,
978 const struct media_pad *remote, u32 flags)
979{
980 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
981 struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
982
983 switch (local->index | media_entity_type(remote->entity)) {
984 case CCP2_PAD_SINK | MEDIA_ENT_T_DEVNODE:
985 /* read from memory */
986 if (flags & MEDIA_LNK_FL_ENABLED) {
987 if (ccp2->input == CCP2_INPUT_SENSOR)
988 return -EBUSY;
989 ccp2->input = CCP2_INPUT_MEMORY;
990 } else {
991 if (ccp2->input == CCP2_INPUT_MEMORY)
992 ccp2->input = CCP2_INPUT_NONE;
993 }
994 break;
995
996 case CCP2_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
997 /* read from sensor/phy */
998 if (flags & MEDIA_LNK_FL_ENABLED) {
999 if (ccp2->input == CCP2_INPUT_MEMORY)
1000 return -EBUSY;
1001 ccp2->input = CCP2_INPUT_SENSOR;
1002 } else {
1003 if (ccp2->input == CCP2_INPUT_SENSOR)
1004 ccp2->input = CCP2_INPUT_NONE;
1005 } break;
1006
1007 case CCP2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
1008 /* write to video port/ccdc */
1009 if (flags & MEDIA_LNK_FL_ENABLED)
1010 ccp2->output = CCP2_OUTPUT_CCDC;
1011 else
1012 ccp2->output = CCP2_OUTPUT_NONE;
1013 break;
1014
1015 default:
1016 return -EINVAL;
1017 }
1018
1019 return 0;
1020}
1021
1022/* media operations */
1023static const struct media_entity_operations ccp2_media_ops = {
1024 .link_setup = ccp2_link_setup,
1025};
1026
1027/*
1028 * ccp2_init_entities - Initialize ccp2 subdev and media entity.
1029 * @ccp2: Pointer to ISP CCP2 device
1030 * return negative error code or zero on success
1031 */
1032static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
1033{
1034 struct v4l2_subdev *sd = &ccp2->subdev;
1035 struct media_pad *pads = ccp2->pads;
1036 struct media_entity *me = &sd->entity;
1037 int ret;
1038
1039 ccp2->input = CCP2_INPUT_NONE;
1040 ccp2->output = CCP2_OUTPUT_NONE;
1041
1042 v4l2_subdev_init(sd, &ccp2_sd_ops);
1043 sd->internal_ops = &ccp2_sd_internal_ops;
1044 strlcpy(sd->name, "OMAP3 ISP CCP2", sizeof(sd->name));
1045 sd->grp_id = 1 << 16; /* group ID for isp subdevs */
1046 v4l2_set_subdevdata(sd, ccp2);
1047 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1048
1049 pads[CCP2_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1050 pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1051
1052 me->ops = &ccp2_media_ops;
1053 ret = media_entity_init(me, CCP2_PADS_NUM, pads, 0);
1054 if (ret < 0)
1055 return ret;
1056
1057 ccp2_init_formats(sd, NULL);
1058
1059 /*
1060 * The CCP2 has weird line alignment requirements, possibly caused by
1061 * DPCM8 decompression. Line length for data read from memory must be a
1062 * multiple of 128 bits (16 bytes) in continuous mode (when no padding
1063 * is present at end of lines). Additionally, if padding is used, the
1064 * padded line length must be a multiple of 32 bytes. To simplify the
1065 * implementation we use a fixed 32 bytes alignment regardless of the
1066 * input format and width. If strict 128 bits alignment support is
1067 * required ispvideo will need to be made aware of this special dual
1068 * alignement requirements.
1069 */
1070 ccp2->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1071 ccp2->video_in.bpl_alignment = 32;
1072 ccp2->video_in.bpl_max = 0xffffffe0;
1073 ccp2->video_in.isp = to_isp_device(ccp2);
1074 ccp2->video_in.ops = &ccp2_video_ops;
1075 ccp2->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
1076
1077 ret = omap3isp_video_init(&ccp2->video_in, "CCP2");
1078 if (ret < 0)
1079 return ret;
1080
1081 /* Connect the video node to the ccp2 subdev. */
1082 ret = media_entity_create_link(&ccp2->video_in.video.entity, 0,
1083 &ccp2->subdev.entity, CCP2_PAD_SINK, 0);
1084 if (ret < 0)
1085 return ret;
1086
1087 return 0;
1088}
1089
1090/*
1091 * omap3isp_ccp2_unregister_entities - Unregister media entities: subdev
1092 * @ccp2: Pointer to ISP CCP2 device
1093 */
1094void omap3isp_ccp2_unregister_entities(struct isp_ccp2_device *ccp2)
1095{
1096 media_entity_cleanup(&ccp2->subdev.entity);
1097
1098 v4l2_device_unregister_subdev(&ccp2->subdev);
1099 omap3isp_video_unregister(&ccp2->video_in);
1100}
1101
1102/*
1103 * omap3isp_ccp2_register_entities - Register the subdev media entity
1104 * @ccp2: Pointer to ISP CCP2 device
1105 * @vdev: Pointer to v4l device
1106 * return negative error code or zero on success
1107 */
1108
1109int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2,
1110 struct v4l2_device *vdev)
1111{
1112 int ret;
1113
1114 /* Register the subdev and video nodes. */
1115 ret = v4l2_device_register_subdev(vdev, &ccp2->subdev);
1116 if (ret < 0)
1117 goto error;
1118
1119 ret = omap3isp_video_register(&ccp2->video_in, vdev);
1120 if (ret < 0)
1121 goto error;
1122
1123 return 0;
1124
1125error:
1126 omap3isp_ccp2_unregister_entities(ccp2);
1127 return ret;
1128}
1129
1130/* -----------------------------------------------------------------------------
1131 * ISP ccp2 initialisation and cleanup
1132 */
1133
1134/*
1135 * omap3isp_ccp2_cleanup - CCP2 un-initialization
1136 * @isp : Pointer to ISP device
1137 */
1138void omap3isp_ccp2_cleanup(struct isp_device *isp)
1139{
1140}
1141
1142/*
1143 * omap3isp_ccp2_init - CCP2 initialization.
1144 * @isp : Pointer to ISP device
1145 * return negative error code or zero on success
1146 */
1147int omap3isp_ccp2_init(struct isp_device *isp)
1148{
1149 struct isp_ccp2_device *ccp2 = &isp->isp_ccp2;
1150 int ret;
1151
1152 init_waitqueue_head(&ccp2->wait);
1153
1154 /* On the OMAP36xx, the CCP2 uses the CSI PHY1 or PHY2, shared with
1155 * the CSI2c or CSI2a receivers. The PHY then needs to be explicitly
1156 * configured.
1157 *
1158 * TODO: Don't hardcode the usage of PHY1 (shared with CSI2c).
1159 */
1160 if (isp->revision == ISP_REVISION_15_0)
1161 ccp2->phy = &isp->isp_csiphy1;
1162
1163 ret = ccp2_init_entities(ccp2);
1164 if (ret < 0)
1165 goto out;
1166
1167 ccp2_reset(ccp2);
1168out:
1169 if (ret)
1170 omap3isp_ccp2_cleanup(isp);
1171
1172 return ret;
1173}
diff --git a/drivers/media/video/omap3isp/ispccp2.h b/drivers/media/video/omap3isp/ispccp2.h
new file mode 100644
index 000000000000..5505a86a9a74
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispccp2.h
@@ -0,0 +1,98 @@
1/*
2 * ispccp2.h
3 *
4 * TI OMAP3 ISP - CCP2 module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2010 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#ifndef OMAP3_ISP_CCP2_H
28#define OMAP3_ISP_CCP2_H
29
30#include <linux/videodev2.h>
31
32struct isp_device;
33struct isp_csiphy;
34
35/* Sink and source ccp2 pads */
36#define CCP2_PAD_SINK 0
37#define CCP2_PAD_SOURCE 1
38#define CCP2_PADS_NUM 2
39
40/* CCP2 input media entity */
41enum ccp2_input_entity {
42 CCP2_INPUT_NONE,
43 CCP2_INPUT_SENSOR,
44 CCP2_INPUT_MEMORY,
45};
46
47/* CCP2 output media entity */
48enum ccp2_output_entity {
49 CCP2_OUTPUT_NONE,
50 CCP2_OUTPUT_CCDC,
51 CCP2_OUTPUT_MEMORY,
52};
53
54
55/* Logical channel configuration */
56struct isp_interface_lcx_config {
57 int crc;
58 u32 data_start;
59 u32 data_size;
60 u32 format;
61};
62
63/* Memory channel configuration */
64struct isp_interface_mem_config {
65 u32 dst_port;
66 u32 vsize_count;
67 u32 hsize_count;
68 u32 src_ofst;
69 u32 dst_ofst;
70};
71
72/* CCP2 device */
73struct isp_ccp2_device {
74 struct v4l2_subdev subdev;
75 struct v4l2_mbus_framefmt formats[CCP2_PADS_NUM];
76 struct media_pad pads[CCP2_PADS_NUM];
77
78 enum ccp2_input_entity input;
79 enum ccp2_output_entity output;
80 struct isp_interface_lcx_config if_cfg;
81 struct isp_interface_mem_config mem_cfg;
82 struct isp_video video_in;
83 struct isp_csiphy *phy;
84 unsigned int error;
85 enum isp_pipeline_stream_state state;
86 wait_queue_head_t wait;
87 atomic_t stopping;
88};
89
90/* Function declarations */
91int omap3isp_ccp2_init(struct isp_device *isp);
92void omap3isp_ccp2_cleanup(struct isp_device *isp);
93int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2,
94 struct v4l2_device *vdev);
95void omap3isp_ccp2_unregister_entities(struct isp_ccp2_device *ccp2);
96int omap3isp_ccp2_isr(struct isp_ccp2_device *ccp2);
97
98#endif /* OMAP3_ISP_CCP2_H */
diff --git a/drivers/media/video/omap3isp/ispcsi2.c b/drivers/media/video/omap3isp/ispcsi2.c
new file mode 100644
index 000000000000..fb503f3db3be
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispcsi2.c
@@ -0,0 +1,1317 @@
1/*
2 * ispcsi2.c
3 *
4 * TI OMAP3 ISP - CSI2 module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26#include <linux/delay.h>
27#include <media/v4l2-common.h>
28#include <linux/v4l2-mediabus.h>
29#include <linux/mm.h>
30
31#include "isp.h"
32#include "ispreg.h"
33#include "ispcsi2.h"
34
35/*
36 * csi2_if_enable - Enable CSI2 Receiver interface.
37 * @enable: enable flag
38 *
39 */
40static void csi2_if_enable(struct isp_device *isp,
41 struct isp_csi2_device *csi2, u8 enable)
42{
43 struct isp_csi2_ctrl_cfg *currctrl = &csi2->ctrl;
44
45 isp_reg_clr_set(isp, csi2->regs1, ISPCSI2_CTRL, ISPCSI2_CTRL_IF_EN,
46 enable ? ISPCSI2_CTRL_IF_EN : 0);
47
48 currctrl->if_enable = enable;
49}
50
51/*
52 * csi2_recv_config - CSI2 receiver module configuration.
53 * @currctrl: isp_csi2_ctrl_cfg structure
54 *
55 */
56static void csi2_recv_config(struct isp_device *isp,
57 struct isp_csi2_device *csi2,
58 struct isp_csi2_ctrl_cfg *currctrl)
59{
60 u32 reg;
61
62 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_CTRL);
63
64 if (currctrl->frame_mode)
65 reg |= ISPCSI2_CTRL_FRAME;
66 else
67 reg &= ~ISPCSI2_CTRL_FRAME;
68
69 if (currctrl->vp_clk_enable)
70 reg |= ISPCSI2_CTRL_VP_CLK_EN;
71 else
72 reg &= ~ISPCSI2_CTRL_VP_CLK_EN;
73
74 if (currctrl->vp_only_enable)
75 reg |= ISPCSI2_CTRL_VP_ONLY_EN;
76 else
77 reg &= ~ISPCSI2_CTRL_VP_ONLY_EN;
78
79 reg &= ~ISPCSI2_CTRL_VP_OUT_CTRL_MASK;
80 reg |= currctrl->vp_out_ctrl << ISPCSI2_CTRL_VP_OUT_CTRL_SHIFT;
81
82 if (currctrl->ecc_enable)
83 reg |= ISPCSI2_CTRL_ECC_EN;
84 else
85 reg &= ~ISPCSI2_CTRL_ECC_EN;
86
87 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_CTRL);
88}
89
90static const unsigned int csi2_input_fmts[] = {
91 V4L2_MBUS_FMT_SGRBG10_1X10,
92 V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
93 V4L2_MBUS_FMT_SRGGB10_1X10,
94 V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8,
95 V4L2_MBUS_FMT_SBGGR10_1X10,
96 V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8,
97 V4L2_MBUS_FMT_SGBRG10_1X10,
98 V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8,
99};
100
101/* To set the format on the CSI2 requires a mapping function that takes
102 * the following inputs:
103 * - 2 different formats (at this time)
104 * - 2 destinations (mem, vp+mem) (vp only handled separately)
105 * - 2 decompression options (on, off)
106 * - 2 isp revisions (certain format must be handled differently on OMAP3630)
107 * Output should be CSI2 frame format code
108 * Array indices as follows: [format][dest][decompr][is_3630]
109 * Not all combinations are valid. 0 means invalid.
110 */
111static const u16 __csi2_fmt_map[2][2][2][2] = {
112 /* RAW10 formats */
113 {
114 /* Output to memory */
115 {
116 /* No DPCM decompression */
117 { CSI2_PIX_FMT_RAW10_EXP16, CSI2_PIX_FMT_RAW10_EXP16 },
118 /* DPCM decompression */
119 { 0, 0 },
120 },
121 /* Output to both */
122 {
123 /* No DPCM decompression */
124 { CSI2_PIX_FMT_RAW10_EXP16_VP,
125 CSI2_PIX_FMT_RAW10_EXP16_VP },
126 /* DPCM decompression */
127 { 0, 0 },
128 },
129 },
130 /* RAW10 DPCM8 formats */
131 {
132 /* Output to memory */
133 {
134 /* No DPCM decompression */
135 { CSI2_PIX_FMT_RAW8, CSI2_USERDEF_8BIT_DATA1 },
136 /* DPCM decompression */
137 { CSI2_PIX_FMT_RAW8_DPCM10_EXP16,
138 CSI2_USERDEF_8BIT_DATA1_DPCM10 },
139 },
140 /* Output to both */
141 {
142 /* No DPCM decompression */
143 { CSI2_PIX_FMT_RAW8_VP,
144 CSI2_PIX_FMT_RAW8_VP },
145 /* DPCM decompression */
146 { CSI2_PIX_FMT_RAW8_DPCM10_VP,
147 CSI2_USERDEF_8BIT_DATA1_DPCM10_VP },
148 },
149 },
150};
151
152/*
153 * csi2_ctx_map_format - Map CSI2 sink media bus format to CSI2 format ID
154 * @csi2: ISP CSI2 device
155 *
156 * Returns CSI2 physical format id
157 */
158static u16 csi2_ctx_map_format(struct isp_csi2_device *csi2)
159{
160 const struct v4l2_mbus_framefmt *fmt = &csi2->formats[CSI2_PAD_SINK];
161 int fmtidx, destidx, is_3630;
162
163 switch (fmt->code) {
164 case V4L2_MBUS_FMT_SGRBG10_1X10:
165 case V4L2_MBUS_FMT_SRGGB10_1X10:
166 case V4L2_MBUS_FMT_SBGGR10_1X10:
167 case V4L2_MBUS_FMT_SGBRG10_1X10:
168 fmtidx = 0;
169 break;
170 case V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8:
171 case V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8:
172 case V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8:
173 case V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8:
174 fmtidx = 1;
175 break;
176 default:
177 WARN(1, KERN_ERR "CSI2: pixel format %08x unsupported!\n",
178 fmt->code);
179 return 0;
180 }
181
182 if (!(csi2->output & CSI2_OUTPUT_CCDC) &&
183 !(csi2->output & CSI2_OUTPUT_MEMORY)) {
184 /* Neither output enabled is a valid combination */
185 return CSI2_PIX_FMT_OTHERS;
186 }
187
188 /* If we need to skip frames at the beginning of the stream disable the
189 * video port to avoid sending the skipped frames to the CCDC.
190 */
191 destidx = csi2->frame_skip ? 0 : !!(csi2->output & CSI2_OUTPUT_CCDC);
192 is_3630 = csi2->isp->revision == ISP_REVISION_15_0;
193
194 return __csi2_fmt_map[fmtidx][destidx][csi2->dpcm_decompress][is_3630];
195}
196
197/*
198 * csi2_set_outaddr - Set memory address to save output image
199 * @csi2: Pointer to ISP CSI2a device.
200 * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary.
201 *
202 * Sets the memory address where the output will be saved.
203 *
204 * Returns 0 if successful, or -EINVAL if the address is not in the 32 byte
205 * boundary.
206 */
207static void csi2_set_outaddr(struct isp_csi2_device *csi2, u32 addr)
208{
209 struct isp_device *isp = csi2->isp;
210 struct isp_csi2_ctx_cfg *ctx = &csi2->contexts[0];
211
212 ctx->ping_addr = addr;
213 ctx->pong_addr = addr;
214 isp_reg_writel(isp, ctx->ping_addr,
215 csi2->regs1, ISPCSI2_CTX_DAT_PING_ADDR(ctx->ctxnum));
216 isp_reg_writel(isp, ctx->pong_addr,
217 csi2->regs1, ISPCSI2_CTX_DAT_PONG_ADDR(ctx->ctxnum));
218}
219
220/*
221 * is_usr_def_mapping - Checks whether USER_DEF_MAPPING should
222 * be enabled by CSI2.
223 * @format_id: mapped format id
224 *
225 */
226static inline int is_usr_def_mapping(u32 format_id)
227{
228 return (format_id & 0x40) ? 1 : 0;
229}
230
231/*
232 * csi2_ctx_enable - Enable specified CSI2 context
233 * @ctxnum: Context number, valid between 0 and 7 values.
234 * @enable: enable
235 *
236 */
237static void csi2_ctx_enable(struct isp_device *isp,
238 struct isp_csi2_device *csi2, u8 ctxnum, u8 enable)
239{
240 struct isp_csi2_ctx_cfg *ctx = &csi2->contexts[ctxnum];
241 unsigned int skip = 0;
242 u32 reg;
243
244 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_CTX_CTRL1(ctxnum));
245
246 if (enable) {
247 if (csi2->frame_skip)
248 skip = csi2->frame_skip;
249 else if (csi2->output & CSI2_OUTPUT_MEMORY)
250 skip = 1;
251
252 reg &= ~ISPCSI2_CTX_CTRL1_COUNT_MASK;
253 reg |= ISPCSI2_CTX_CTRL1_COUNT_UNLOCK
254 | (skip << ISPCSI2_CTX_CTRL1_COUNT_SHIFT)
255 | ISPCSI2_CTX_CTRL1_CTX_EN;
256 } else {
257 reg &= ~ISPCSI2_CTX_CTRL1_CTX_EN;
258 }
259
260 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_CTX_CTRL1(ctxnum));
261 ctx->enabled = enable;
262}
263
264/*
265 * csi2_ctx_config - CSI2 context configuration.
266 * @ctx: context configuration
267 *
268 */
269static void csi2_ctx_config(struct isp_device *isp,
270 struct isp_csi2_device *csi2,
271 struct isp_csi2_ctx_cfg *ctx)
272{
273 u32 reg;
274
275 /* Set up CSI2_CTx_CTRL1 */
276 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_CTX_CTRL1(ctx->ctxnum));
277
278 if (ctx->eof_enabled)
279 reg |= ISPCSI2_CTX_CTRL1_EOF_EN;
280 else
281 reg &= ~ISPCSI2_CTX_CTRL1_EOF_EN;
282
283 if (ctx->eol_enabled)
284 reg |= ISPCSI2_CTX_CTRL1_EOL_EN;
285 else
286 reg &= ~ISPCSI2_CTX_CTRL1_EOL_EN;
287
288 if (ctx->checksum_enabled)
289 reg |= ISPCSI2_CTX_CTRL1_CS_EN;
290 else
291 reg &= ~ISPCSI2_CTX_CTRL1_CS_EN;
292
293 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_CTX_CTRL1(ctx->ctxnum));
294
295 /* Set up CSI2_CTx_CTRL2 */
296 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_CTX_CTRL2(ctx->ctxnum));
297
298 reg &= ~(ISPCSI2_CTX_CTRL2_VIRTUAL_ID_MASK);
299 reg |= ctx->virtual_id << ISPCSI2_CTX_CTRL2_VIRTUAL_ID_SHIFT;
300
301 reg &= ~(ISPCSI2_CTX_CTRL2_FORMAT_MASK);
302 reg |= ctx->format_id << ISPCSI2_CTX_CTRL2_FORMAT_SHIFT;
303
304 if (ctx->dpcm_decompress) {
305 if (ctx->dpcm_predictor)
306 reg |= ISPCSI2_CTX_CTRL2_DPCM_PRED;
307 else
308 reg &= ~ISPCSI2_CTX_CTRL2_DPCM_PRED;
309 }
310
311 if (is_usr_def_mapping(ctx->format_id)) {
312 reg &= ~ISPCSI2_CTX_CTRL2_USER_DEF_MAP_MASK;
313 reg |= 2 << ISPCSI2_CTX_CTRL2_USER_DEF_MAP_SHIFT;
314 }
315
316 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_CTX_CTRL2(ctx->ctxnum));
317
318 /* Set up CSI2_CTx_CTRL3 */
319 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_CTX_CTRL3(ctx->ctxnum));
320 reg &= ~(ISPCSI2_CTX_CTRL3_ALPHA_MASK);
321 reg |= (ctx->alpha << ISPCSI2_CTX_CTRL3_ALPHA_SHIFT);
322
323 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_CTX_CTRL3(ctx->ctxnum));
324
325 /* Set up CSI2_CTx_DAT_OFST */
326 reg = isp_reg_readl(isp, csi2->regs1,
327 ISPCSI2_CTX_DAT_OFST(ctx->ctxnum));
328 reg &= ~ISPCSI2_CTX_DAT_OFST_OFST_MASK;
329 reg |= ctx->data_offset << ISPCSI2_CTX_DAT_OFST_OFST_SHIFT;
330 isp_reg_writel(isp, reg, csi2->regs1,
331 ISPCSI2_CTX_DAT_OFST(ctx->ctxnum));
332
333 isp_reg_writel(isp, ctx->ping_addr,
334 csi2->regs1, ISPCSI2_CTX_DAT_PING_ADDR(ctx->ctxnum));
335
336 isp_reg_writel(isp, ctx->pong_addr,
337 csi2->regs1, ISPCSI2_CTX_DAT_PONG_ADDR(ctx->ctxnum));
338}
339
340/*
341 * csi2_timing_config - CSI2 timing configuration.
342 * @timing: csi2_timing_cfg structure
343 */
344static void csi2_timing_config(struct isp_device *isp,
345 struct isp_csi2_device *csi2,
346 struct isp_csi2_timing_cfg *timing)
347{
348 u32 reg;
349
350 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_TIMING);
351
352 if (timing->force_rx_mode)
353 reg |= ISPCSI2_TIMING_FORCE_RX_MODE_IO(timing->ionum);
354 else
355 reg &= ~ISPCSI2_TIMING_FORCE_RX_MODE_IO(timing->ionum);
356
357 if (timing->stop_state_16x)
358 reg |= ISPCSI2_TIMING_STOP_STATE_X16_IO(timing->ionum);
359 else
360 reg &= ~ISPCSI2_TIMING_STOP_STATE_X16_IO(timing->ionum);
361
362 if (timing->stop_state_4x)
363 reg |= ISPCSI2_TIMING_STOP_STATE_X4_IO(timing->ionum);
364 else
365 reg &= ~ISPCSI2_TIMING_STOP_STATE_X4_IO(timing->ionum);
366
367 reg &= ~ISPCSI2_TIMING_STOP_STATE_COUNTER_IO_MASK(timing->ionum);
368 reg |= timing->stop_state_counter <<
369 ISPCSI2_TIMING_STOP_STATE_COUNTER_IO_SHIFT(timing->ionum);
370
371 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_TIMING);
372}
373
374/*
375 * csi2_irq_ctx_set - Enables CSI2 Context IRQs.
376 * @enable: Enable/disable CSI2 Context interrupts
377 */
378static void csi2_irq_ctx_set(struct isp_device *isp,
379 struct isp_csi2_device *csi2, int enable)
380{
381 u32 reg = ISPCSI2_CTX_IRQSTATUS_FE_IRQ;
382 int i;
383
384 if (csi2->use_fs_irq)
385 reg |= ISPCSI2_CTX_IRQSTATUS_FS_IRQ;
386
387 for (i = 0; i < 8; i++) {
388 isp_reg_writel(isp, reg, csi2->regs1,
389 ISPCSI2_CTX_IRQSTATUS(i));
390 if (enable)
391 isp_reg_set(isp, csi2->regs1, ISPCSI2_CTX_IRQENABLE(i),
392 reg);
393 else
394 isp_reg_clr(isp, csi2->regs1, ISPCSI2_CTX_IRQENABLE(i),
395 reg);
396 }
397}
398
399/*
400 * csi2_irq_complexio1_set - Enables CSI2 ComplexIO IRQs.
401 * @enable: Enable/disable CSI2 ComplexIO #1 interrupts
402 */
403static void csi2_irq_complexio1_set(struct isp_device *isp,
404 struct isp_csi2_device *csi2, int enable)
405{
406 u32 reg;
407 reg = ISPCSI2_PHY_IRQENABLE_STATEALLULPMEXIT |
408 ISPCSI2_PHY_IRQENABLE_STATEALLULPMENTER |
409 ISPCSI2_PHY_IRQENABLE_STATEULPM5 |
410 ISPCSI2_PHY_IRQENABLE_ERRCONTROL5 |
411 ISPCSI2_PHY_IRQENABLE_ERRESC5 |
412 ISPCSI2_PHY_IRQENABLE_ERRSOTSYNCHS5 |
413 ISPCSI2_PHY_IRQENABLE_ERRSOTHS5 |
414 ISPCSI2_PHY_IRQENABLE_STATEULPM4 |
415 ISPCSI2_PHY_IRQENABLE_ERRCONTROL4 |
416 ISPCSI2_PHY_IRQENABLE_ERRESC4 |
417 ISPCSI2_PHY_IRQENABLE_ERRSOTSYNCHS4 |
418 ISPCSI2_PHY_IRQENABLE_ERRSOTHS4 |
419 ISPCSI2_PHY_IRQENABLE_STATEULPM3 |
420 ISPCSI2_PHY_IRQENABLE_ERRCONTROL3 |
421 ISPCSI2_PHY_IRQENABLE_ERRESC3 |
422 ISPCSI2_PHY_IRQENABLE_ERRSOTSYNCHS3 |
423 ISPCSI2_PHY_IRQENABLE_ERRSOTHS3 |
424 ISPCSI2_PHY_IRQENABLE_STATEULPM2 |
425 ISPCSI2_PHY_IRQENABLE_ERRCONTROL2 |
426 ISPCSI2_PHY_IRQENABLE_ERRESC2 |
427 ISPCSI2_PHY_IRQENABLE_ERRSOTSYNCHS2 |
428 ISPCSI2_PHY_IRQENABLE_ERRSOTHS2 |
429 ISPCSI2_PHY_IRQENABLE_STATEULPM1 |
430 ISPCSI2_PHY_IRQENABLE_ERRCONTROL1 |
431 ISPCSI2_PHY_IRQENABLE_ERRESC1 |
432 ISPCSI2_PHY_IRQENABLE_ERRSOTSYNCHS1 |
433 ISPCSI2_PHY_IRQENABLE_ERRSOTHS1;
434 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_PHY_IRQSTATUS);
435 if (enable)
436 reg |= isp_reg_readl(isp, csi2->regs1, ISPCSI2_PHY_IRQENABLE);
437 else
438 reg = 0;
439 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_PHY_IRQENABLE);
440}
441
442/*
443 * csi2_irq_status_set - Enables CSI2 Status IRQs.
444 * @enable: Enable/disable CSI2 Status interrupts
445 */
446static void csi2_irq_status_set(struct isp_device *isp,
447 struct isp_csi2_device *csi2, int enable)
448{
449 u32 reg;
450 reg = ISPCSI2_IRQSTATUS_OCP_ERR_IRQ |
451 ISPCSI2_IRQSTATUS_SHORT_PACKET_IRQ |
452 ISPCSI2_IRQSTATUS_ECC_CORRECTION_IRQ |
453 ISPCSI2_IRQSTATUS_ECC_NO_CORRECTION_IRQ |
454 ISPCSI2_IRQSTATUS_COMPLEXIO2_ERR_IRQ |
455 ISPCSI2_IRQSTATUS_COMPLEXIO1_ERR_IRQ |
456 ISPCSI2_IRQSTATUS_FIFO_OVF_IRQ |
457 ISPCSI2_IRQSTATUS_CONTEXT(0);
458 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_IRQSTATUS);
459 if (enable)
460 reg |= isp_reg_readl(isp, csi2->regs1, ISPCSI2_IRQENABLE);
461 else
462 reg = 0;
463
464 isp_reg_writel(isp, reg, csi2->regs1, ISPCSI2_IRQENABLE);
465}
466
467/*
468 * omap3isp_csi2_reset - Resets the CSI2 module.
469 *
470 * Must be called with the phy lock held.
471 *
472 * Returns 0 if successful, or -EBUSY if power command didn't respond.
473 */
474int omap3isp_csi2_reset(struct isp_csi2_device *csi2)
475{
476 struct isp_device *isp = csi2->isp;
477 u8 soft_reset_retries = 0;
478 u32 reg;
479 int i;
480
481 if (!csi2->available)
482 return -ENODEV;
483
484 if (csi2->phy->phy_in_use)
485 return -EBUSY;
486
487 isp_reg_set(isp, csi2->regs1, ISPCSI2_SYSCONFIG,
488 ISPCSI2_SYSCONFIG_SOFT_RESET);
489
490 do {
491 reg = isp_reg_readl(isp, csi2->regs1, ISPCSI2_SYSSTATUS) &
492 ISPCSI2_SYSSTATUS_RESET_DONE;
493 if (reg == ISPCSI2_SYSSTATUS_RESET_DONE)
494 break;
495 soft_reset_retries++;
496 if (soft_reset_retries < 5)
497 udelay(100);
498 } while (soft_reset_retries < 5);
499
500 if (soft_reset_retries == 5) {
501 printk(KERN_ERR "CSI2: Soft reset try count exceeded!\n");
502 return -EBUSY;
503 }
504
505 if (isp->revision == ISP_REVISION_15_0)
506 isp_reg_set(isp, csi2->regs1, ISPCSI2_PHY_CFG,
507 ISPCSI2_PHY_CFG_RESET_CTRL);
508
509 i = 100;
510 do {
511 reg = isp_reg_readl(isp, csi2->phy->phy_regs, ISPCSIPHY_REG1)
512 & ISPCSIPHY_REG1_RESET_DONE_CTRLCLK;
513 if (reg == ISPCSIPHY_REG1_RESET_DONE_CTRLCLK)
514 break;
515 udelay(100);
516 } while (--i > 0);
517
518 if (i == 0) {
519 printk(KERN_ERR
520 "CSI2: Reset for CSI2_96M_FCLK domain Failed!\n");
521 return -EBUSY;
522 }
523
524 if (isp->autoidle)
525 isp_reg_clr_set(isp, csi2->regs1, ISPCSI2_SYSCONFIG,
526 ISPCSI2_SYSCONFIG_MSTANDBY_MODE_MASK |
527 ISPCSI2_SYSCONFIG_AUTO_IDLE,
528 ISPCSI2_SYSCONFIG_MSTANDBY_MODE_SMART |
529 ((isp->revision == ISP_REVISION_15_0) ?
530 ISPCSI2_SYSCONFIG_AUTO_IDLE : 0));
531 else
532 isp_reg_clr_set(isp, csi2->regs1, ISPCSI2_SYSCONFIG,
533 ISPCSI2_SYSCONFIG_MSTANDBY_MODE_MASK |
534 ISPCSI2_SYSCONFIG_AUTO_IDLE,
535 ISPCSI2_SYSCONFIG_MSTANDBY_MODE_NO);
536
537 return 0;
538}
539
540static int csi2_configure(struct isp_csi2_device *csi2)
541{
542 const struct isp_v4l2_subdevs_group *pdata;
543 struct isp_device *isp = csi2->isp;
544 struct isp_csi2_timing_cfg *timing = &csi2->timing[0];
545 struct v4l2_subdev *sensor;
546 struct media_pad *pad;
547
548 /*
549 * CSI2 fields that can be updated while the context has
550 * been enabled or the interface has been enabled are not
551 * updated dynamically currently. So we do not allow to
552 * reconfigure if either has been enabled
553 */
554 if (csi2->contexts[0].enabled || csi2->ctrl.if_enable)
555 return -EBUSY;
556
557 pad = media_entity_remote_source(&csi2->pads[CSI2_PAD_SINK]);
558 sensor = media_entity_to_v4l2_subdev(pad->entity);
559 pdata = sensor->host_priv;
560
561 csi2->frame_skip = 0;
562 v4l2_subdev_call(sensor, sensor, g_skip_frames, &csi2->frame_skip);
563
564 csi2->ctrl.vp_out_ctrl = pdata->bus.csi2.vpclk_div;
565 csi2->ctrl.frame_mode = ISP_CSI2_FRAME_IMMEDIATE;
566 csi2->ctrl.ecc_enable = pdata->bus.csi2.crc;
567
568 timing->ionum = 1;
569 timing->force_rx_mode = 1;
570 timing->stop_state_16x = 1;
571 timing->stop_state_4x = 1;
572 timing->stop_state_counter = 0x1FF;
573
574 /*
575 * The CSI2 receiver can't do any format conversion except DPCM
576 * decompression, so every set_format call configures both pads
577 * and enables DPCM decompression as a special case:
578 */
579 if (csi2->formats[CSI2_PAD_SINK].code !=
580 csi2->formats[CSI2_PAD_SOURCE].code)
581 csi2->dpcm_decompress = true;
582 else
583 csi2->dpcm_decompress = false;
584
585 csi2->contexts[0].format_id = csi2_ctx_map_format(csi2);
586
587 if (csi2->video_out.bpl_padding == 0)
588 csi2->contexts[0].data_offset = 0;
589 else
590 csi2->contexts[0].data_offset = csi2->video_out.bpl_value;
591
592 /*
593 * Enable end of frame and end of line signals generation for
594 * context 0. These signals are generated from CSI2 receiver to
595 * qualify the last pixel of a frame and the last pixel of a line.
596 * Without enabling the signals CSI2 receiver writes data to memory
597 * beyond buffer size and/or data line offset is not handled correctly.
598 */
599 csi2->contexts[0].eof_enabled = 1;
600 csi2->contexts[0].eol_enabled = 1;
601
602 csi2_irq_complexio1_set(isp, csi2, 1);
603 csi2_irq_ctx_set(isp, csi2, 1);
604 csi2_irq_status_set(isp, csi2, 1);
605
606 /* Set configuration (timings, format and links) */
607 csi2_timing_config(isp, csi2, timing);
608 csi2_recv_config(isp, csi2, &csi2->ctrl);
609 csi2_ctx_config(isp, csi2, &csi2->contexts[0]);
610
611 return 0;
612}
613
614/*
615 * csi2_print_status - Prints CSI2 debug information.
616 */
617#define CSI2_PRINT_REGISTER(isp, regs, name)\
618 dev_dbg(isp->dev, "###CSI2 " #name "=0x%08x\n", \
619 isp_reg_readl(isp, regs, ISPCSI2_##name))
620
621static void csi2_print_status(struct isp_csi2_device *csi2)
622{
623 struct isp_device *isp = csi2->isp;
624
625 if (!csi2->available)
626 return;
627
628 dev_dbg(isp->dev, "-------------CSI2 Register dump-------------\n");
629
630 CSI2_PRINT_REGISTER(isp, csi2->regs1, SYSCONFIG);
631 CSI2_PRINT_REGISTER(isp, csi2->regs1, SYSSTATUS);
632 CSI2_PRINT_REGISTER(isp, csi2->regs1, IRQENABLE);
633 CSI2_PRINT_REGISTER(isp, csi2->regs1, IRQSTATUS);
634 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTRL);
635 CSI2_PRINT_REGISTER(isp, csi2->regs1, DBG_H);
636 CSI2_PRINT_REGISTER(isp, csi2->regs1, GNQ);
637 CSI2_PRINT_REGISTER(isp, csi2->regs1, PHY_CFG);
638 CSI2_PRINT_REGISTER(isp, csi2->regs1, PHY_IRQSTATUS);
639 CSI2_PRINT_REGISTER(isp, csi2->regs1, SHORT_PACKET);
640 CSI2_PRINT_REGISTER(isp, csi2->regs1, PHY_IRQENABLE);
641 CSI2_PRINT_REGISTER(isp, csi2->regs1, DBG_P);
642 CSI2_PRINT_REGISTER(isp, csi2->regs1, TIMING);
643 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_CTRL1(0));
644 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_CTRL2(0));
645 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_DAT_OFST(0));
646 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_DAT_PING_ADDR(0));
647 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_DAT_PONG_ADDR(0));
648 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_IRQENABLE(0));
649 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_IRQSTATUS(0));
650 CSI2_PRINT_REGISTER(isp, csi2->regs1, CTX_CTRL3(0));
651
652 dev_dbg(isp->dev, "--------------------------------------------\n");
653}
654
655/* -----------------------------------------------------------------------------
656 * Interrupt handling
657 */
658
659/*
660 * csi2_isr_buffer - Does buffer handling at end-of-frame
661 * when writing to memory.
662 */
663static void csi2_isr_buffer(struct isp_csi2_device *csi2)
664{
665 struct isp_device *isp = csi2->isp;
666 struct isp_buffer *buffer;
667
668 csi2_ctx_enable(isp, csi2, 0, 0);
669
670 buffer = omap3isp_video_buffer_next(&csi2->video_out, 0);
671
672 /*
673 * Let video queue operation restart engine if there is an underrun
674 * condition.
675 */
676 if (buffer == NULL)
677 return;
678
679 csi2_set_outaddr(csi2, buffer->isp_addr);
680 csi2_ctx_enable(isp, csi2, 0, 1);
681}
682
683static void csi2_isr_ctx(struct isp_csi2_device *csi2,
684 struct isp_csi2_ctx_cfg *ctx)
685{
686 struct isp_device *isp = csi2->isp;
687 unsigned int n = ctx->ctxnum;
688 u32 status;
689
690 status = isp_reg_readl(isp, csi2->regs1, ISPCSI2_CTX_IRQSTATUS(n));
691 isp_reg_writel(isp, status, csi2->regs1, ISPCSI2_CTX_IRQSTATUS(n));
692
693 /* Propagate frame number */
694 if (status & ISPCSI2_CTX_IRQSTATUS_FS_IRQ) {
695 struct isp_pipeline *pipe =
696 to_isp_pipeline(&csi2->subdev.entity);
697 if (pipe->do_propagation)
698 atomic_inc(&pipe->frame_number);
699 }
700
701 if (!(status & ISPCSI2_CTX_IRQSTATUS_FE_IRQ))
702 return;
703
704 /* Skip interrupts until we reach the frame skip count. The CSI2 will be
705 * automatically disabled, as the frame skip count has been programmed
706 * in the CSI2_CTx_CTRL1::COUNT field, so reenable it.
707 *
708 * It would have been nice to rely on the FRAME_NUMBER interrupt instead
709 * but it turned out that the interrupt is only generated when the CSI2
710 * writes to memory (the CSI2_CTx_CTRL1::COUNT field is decreased
711 * correctly and reaches 0 when data is forwarded to the video port only
712 * but no interrupt arrives). Maybe a CSI2 hardware bug.
713 */
714 if (csi2->frame_skip) {
715 csi2->frame_skip--;
716 if (csi2->frame_skip == 0) {
717 ctx->format_id = csi2_ctx_map_format(csi2);
718 csi2_ctx_config(isp, csi2, ctx);
719 csi2_ctx_enable(isp, csi2, n, 1);
720 }
721 return;
722 }
723
724 if (csi2->output & CSI2_OUTPUT_MEMORY)
725 csi2_isr_buffer(csi2);
726}
727
728/*
729 * omap3isp_csi2_isr - CSI2 interrupt handling.
730 *
731 * Return -EIO on Transmission error
732 */
733int omap3isp_csi2_isr(struct isp_csi2_device *csi2)
734{
735 u32 csi2_irqstatus, cpxio1_irqstatus;
736 struct isp_device *isp = csi2->isp;
737 int retval = 0;
738
739 if (!csi2->available)
740 return -ENODEV;
741
742 csi2_irqstatus = isp_reg_readl(isp, csi2->regs1, ISPCSI2_IRQSTATUS);
743 isp_reg_writel(isp, csi2_irqstatus, csi2->regs1, ISPCSI2_IRQSTATUS);
744
745 /* Failure Cases */
746 if (csi2_irqstatus & ISPCSI2_IRQSTATUS_COMPLEXIO1_ERR_IRQ) {
747 cpxio1_irqstatus = isp_reg_readl(isp, csi2->regs1,
748 ISPCSI2_PHY_IRQSTATUS);
749 isp_reg_writel(isp, cpxio1_irqstatus,
750 csi2->regs1, ISPCSI2_PHY_IRQSTATUS);
751 dev_dbg(isp->dev, "CSI2: ComplexIO Error IRQ "
752 "%x\n", cpxio1_irqstatus);
753 retval = -EIO;
754 }
755
756 if (csi2_irqstatus & (ISPCSI2_IRQSTATUS_OCP_ERR_IRQ |
757 ISPCSI2_IRQSTATUS_SHORT_PACKET_IRQ |
758 ISPCSI2_IRQSTATUS_ECC_NO_CORRECTION_IRQ |
759 ISPCSI2_IRQSTATUS_COMPLEXIO2_ERR_IRQ |
760 ISPCSI2_IRQSTATUS_FIFO_OVF_IRQ)) {
761 dev_dbg(isp->dev, "CSI2 Err:"
762 " OCP:%d,"
763 " Short_pack:%d,"
764 " ECC:%d,"
765 " CPXIO2:%d,"
766 " FIFO_OVF:%d,"
767 "\n",
768 (csi2_irqstatus &
769 ISPCSI2_IRQSTATUS_OCP_ERR_IRQ) ? 1 : 0,
770 (csi2_irqstatus &
771 ISPCSI2_IRQSTATUS_SHORT_PACKET_IRQ) ? 1 : 0,
772 (csi2_irqstatus &
773 ISPCSI2_IRQSTATUS_ECC_NO_CORRECTION_IRQ) ? 1 : 0,
774 (csi2_irqstatus &
775 ISPCSI2_IRQSTATUS_COMPLEXIO2_ERR_IRQ) ? 1 : 0,
776 (csi2_irqstatus &
777 ISPCSI2_IRQSTATUS_FIFO_OVF_IRQ) ? 1 : 0);
778 retval = -EIO;
779 }
780
781 if (omap3isp_module_sync_is_stopping(&csi2->wait, &csi2->stopping))
782 return 0;
783
784 /* Successful cases */
785 if (csi2_irqstatus & ISPCSI2_IRQSTATUS_CONTEXT(0))
786 csi2_isr_ctx(csi2, &csi2->contexts[0]);
787
788 if (csi2_irqstatus & ISPCSI2_IRQSTATUS_ECC_CORRECTION_IRQ)
789 dev_dbg(isp->dev, "CSI2: ECC correction done\n");
790
791 return retval;
792}
793
794/* -----------------------------------------------------------------------------
795 * ISP video operations
796 */
797
798/*
799 * csi2_queue - Queues the first buffer when using memory output
800 * @video: The video node
801 * @buffer: buffer to queue
802 */
803static int csi2_queue(struct isp_video *video, struct isp_buffer *buffer)
804{
805 struct isp_device *isp = video->isp;
806 struct isp_csi2_device *csi2 = &isp->isp_csi2a;
807
808 csi2_set_outaddr(csi2, buffer->isp_addr);
809
810 /*
811 * If streaming was enabled before there was a buffer queued
812 * or underrun happened in the ISR, the hardware was not enabled
813 * and DMA queue flag ISP_VIDEO_DMAQUEUE_UNDERRUN is still set.
814 * Enable it now.
815 */
816 if (csi2->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_UNDERRUN) {
817 /* Enable / disable context 0 and IRQs */
818 csi2_if_enable(isp, csi2, 1);
819 csi2_ctx_enable(isp, csi2, 0, 1);
820 isp_video_dmaqueue_flags_clr(&csi2->video_out);
821 }
822
823 return 0;
824}
825
826static const struct isp_video_operations csi2_ispvideo_ops = {
827 .queue = csi2_queue,
828};
829
830/* -----------------------------------------------------------------------------
831 * V4L2 subdev operations
832 */
833
834static struct v4l2_mbus_framefmt *
835__csi2_get_format(struct isp_csi2_device *csi2, struct v4l2_subdev_fh *fh,
836 unsigned int pad, enum v4l2_subdev_format_whence which)
837{
838 if (which == V4L2_SUBDEV_FORMAT_TRY)
839 return v4l2_subdev_get_try_format(fh, pad);
840 else
841 return &csi2->formats[pad];
842}
843
844static void
845csi2_try_format(struct isp_csi2_device *csi2, struct v4l2_subdev_fh *fh,
846 unsigned int pad, struct v4l2_mbus_framefmt *fmt,
847 enum v4l2_subdev_format_whence which)
848{
849 enum v4l2_mbus_pixelcode pixelcode;
850 struct v4l2_mbus_framefmt *format;
851 const struct isp_format_info *info;
852 unsigned int i;
853
854 switch (pad) {
855 case CSI2_PAD_SINK:
856 /* Clamp the width and height to valid range (1-8191). */
857 for (i = 0; i < ARRAY_SIZE(csi2_input_fmts); i++) {
858 if (fmt->code == csi2_input_fmts[i])
859 break;
860 }
861
862 /* If not found, use SGRBG10 as default */
863 if (i >= ARRAY_SIZE(csi2_input_fmts))
864 fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
865
866 fmt->width = clamp_t(u32, fmt->width, 1, 8191);
867 fmt->height = clamp_t(u32, fmt->height, 1, 8191);
868 break;
869
870 case CSI2_PAD_SOURCE:
871 /* Source format same as sink format, except for DPCM
872 * compression.
873 */
874 pixelcode = fmt->code;
875 format = __csi2_get_format(csi2, fh, CSI2_PAD_SINK, which);
876 memcpy(fmt, format, sizeof(*fmt));
877
878 /*
879 * Only Allow DPCM decompression, and check that the
880 * pattern is preserved
881 */
882 info = omap3isp_video_format_info(fmt->code);
883 if (info->uncompressed == pixelcode)
884 fmt->code = pixelcode;
885 break;
886 }
887
888 /* RGB, non-interlaced */
889 fmt->colorspace = V4L2_COLORSPACE_SRGB;
890 fmt->field = V4L2_FIELD_NONE;
891}
892
893/*
894 * csi2_enum_mbus_code - Handle pixel format enumeration
895 * @sd : pointer to v4l2 subdev structure
896 * @fh : V4L2 subdev file handle
897 * @code : pointer to v4l2_subdev_mbus_code_enum structure
898 * return -EINVAL or zero on success
899 */
900static int csi2_enum_mbus_code(struct v4l2_subdev *sd,
901 struct v4l2_subdev_fh *fh,
902 struct v4l2_subdev_mbus_code_enum *code)
903{
904 struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
905 struct v4l2_mbus_framefmt *format;
906 const struct isp_format_info *info;
907
908 if (code->pad == CSI2_PAD_SINK) {
909 if (code->index >= ARRAY_SIZE(csi2_input_fmts))
910 return -EINVAL;
911
912 code->code = csi2_input_fmts[code->index];
913 } else {
914 format = __csi2_get_format(csi2, fh, CSI2_PAD_SINK,
915 V4L2_SUBDEV_FORMAT_TRY);
916 switch (code->index) {
917 case 0:
918 /* Passthrough sink pad code */
919 code->code = format->code;
920 break;
921 case 1:
922 /* Uncompressed code */
923 info = omap3isp_video_format_info(format->code);
924 if (info->uncompressed == format->code)
925 return -EINVAL;
926
927 code->code = info->uncompressed;
928 break;
929 default:
930 return -EINVAL;
931 }
932 }
933
934 return 0;
935}
936
937static int csi2_enum_frame_size(struct v4l2_subdev *sd,
938 struct v4l2_subdev_fh *fh,
939 struct v4l2_subdev_frame_size_enum *fse)
940{
941 struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
942 struct v4l2_mbus_framefmt format;
943
944 if (fse->index != 0)
945 return -EINVAL;
946
947 format.code = fse->code;
948 format.width = 1;
949 format.height = 1;
950 csi2_try_format(csi2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
951 fse->min_width = format.width;
952 fse->min_height = format.height;
953
954 if (format.code != fse->code)
955 return -EINVAL;
956
957 format.code = fse->code;
958 format.width = -1;
959 format.height = -1;
960 csi2_try_format(csi2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
961 fse->max_width = format.width;
962 fse->max_height = format.height;
963
964 return 0;
965}
966
967/*
968 * csi2_get_format - Handle get format by pads subdev method
969 * @sd : pointer to v4l2 subdev structure
970 * @fh : V4L2 subdev file handle
971 * @fmt: pointer to v4l2 subdev format structure
972 * return -EINVAL or zero on sucess
973 */
974static int csi2_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
975 struct v4l2_subdev_format *fmt)
976{
977 struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
978 struct v4l2_mbus_framefmt *format;
979
980 format = __csi2_get_format(csi2, fh, fmt->pad, fmt->which);
981 if (format == NULL)
982 return -EINVAL;
983
984 fmt->format = *format;
985 return 0;
986}
987
988/*
989 * csi2_set_format - Handle set format by pads subdev method
990 * @sd : pointer to v4l2 subdev structure
991 * @fh : V4L2 subdev file handle
992 * @fmt: pointer to v4l2 subdev format structure
993 * return -EINVAL or zero on success
994 */
995static int csi2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
996 struct v4l2_subdev_format *fmt)
997{
998 struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
999 struct v4l2_mbus_framefmt *format;
1000
1001 format = __csi2_get_format(csi2, fh, fmt->pad, fmt->which);
1002 if (format == NULL)
1003 return -EINVAL;
1004
1005 csi2_try_format(csi2, fh, fmt->pad, &fmt->format, fmt->which);
1006 *format = fmt->format;
1007
1008 /* Propagate the format from sink to source */
1009 if (fmt->pad == CSI2_PAD_SINK) {
1010 format = __csi2_get_format(csi2, fh, CSI2_PAD_SOURCE,
1011 fmt->which);
1012 *format = fmt->format;
1013 csi2_try_format(csi2, fh, CSI2_PAD_SOURCE, format, fmt->which);
1014 }
1015
1016 return 0;
1017}
1018
1019/*
1020 * csi2_init_formats - Initialize formats on all pads
1021 * @sd: ISP CSI2 V4L2 subdevice
1022 * @fh: V4L2 subdev file handle
1023 *
1024 * Initialize all pad formats with default values. If fh is not NULL, try
1025 * formats are initialized on the file handle. Otherwise active formats are
1026 * initialized on the device.
1027 */
1028static int csi2_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1029{
1030 struct v4l2_subdev_format format;
1031
1032 memset(&format, 0, sizeof(format));
1033 format.pad = CSI2_PAD_SINK;
1034 format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
1035 format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
1036 format.format.width = 4096;
1037 format.format.height = 4096;
1038 csi2_set_format(sd, fh, &format);
1039
1040 return 0;
1041}
1042
1043/*
1044 * csi2_set_stream - Enable/Disable streaming on the CSI2 module
1045 * @sd: ISP CSI2 V4L2 subdevice
1046 * @enable: ISP pipeline stream state
1047 *
1048 * Return 0 on success or a negative error code otherwise.
1049 */
1050static int csi2_set_stream(struct v4l2_subdev *sd, int enable)
1051{
1052 struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
1053 struct isp_device *isp = csi2->isp;
1054 struct isp_pipeline *pipe = to_isp_pipeline(&csi2->subdev.entity);
1055 struct isp_video *video_out = &csi2->video_out;
1056
1057 switch (enable) {
1058 case ISP_PIPELINE_STREAM_CONTINUOUS:
1059 if (omap3isp_csiphy_acquire(csi2->phy) < 0)
1060 return -ENODEV;
1061 csi2->use_fs_irq = pipe->do_propagation;
1062 if (csi2->output & CSI2_OUTPUT_MEMORY)
1063 omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI2A_WRITE);
1064 csi2_configure(csi2);
1065 csi2_print_status(csi2);
1066
1067 /*
1068 * When outputting to memory with no buffer available, let the
1069 * buffer queue handler start the hardware. A DMA queue flag
1070 * ISP_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
1071 * a buffer available.
1072 */
1073 if (csi2->output & CSI2_OUTPUT_MEMORY &&
1074 !(video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED))
1075 break;
1076 /* Enable context 0 and IRQs */
1077 atomic_set(&csi2->stopping, 0);
1078 csi2_ctx_enable(isp, csi2, 0, 1);
1079 csi2_if_enable(isp, csi2, 1);
1080 isp_video_dmaqueue_flags_clr(video_out);
1081 break;
1082
1083 case ISP_PIPELINE_STREAM_STOPPED:
1084 if (csi2->state == ISP_PIPELINE_STREAM_STOPPED)
1085 return 0;
1086 if (omap3isp_module_sync_idle(&sd->entity, &csi2->wait,
1087 &csi2->stopping))
1088 dev_dbg(isp->dev, "%s: module stop timeout.\n",
1089 sd->name);
1090 csi2_ctx_enable(isp, csi2, 0, 0);
1091 csi2_if_enable(isp, csi2, 0);
1092 csi2_irq_ctx_set(isp, csi2, 0);
1093 omap3isp_csiphy_release(csi2->phy);
1094 isp_video_dmaqueue_flags_clr(video_out);
1095 omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CSI2A_WRITE);
1096 break;
1097 }
1098
1099 csi2->state = enable;
1100 return 0;
1101}
1102
1103/* subdev video operations */
1104static const struct v4l2_subdev_video_ops csi2_video_ops = {
1105 .s_stream = csi2_set_stream,
1106};
1107
1108/* subdev pad operations */
1109static const struct v4l2_subdev_pad_ops csi2_pad_ops = {
1110 .enum_mbus_code = csi2_enum_mbus_code,
1111 .enum_frame_size = csi2_enum_frame_size,
1112 .get_fmt = csi2_get_format,
1113 .set_fmt = csi2_set_format,
1114};
1115
1116/* subdev operations */
1117static const struct v4l2_subdev_ops csi2_ops = {
1118 .video = &csi2_video_ops,
1119 .pad = &csi2_pad_ops,
1120};
1121
1122/* subdev internal operations */
1123static const struct v4l2_subdev_internal_ops csi2_internal_ops = {
1124 .open = csi2_init_formats,
1125};
1126
1127/* -----------------------------------------------------------------------------
1128 * Media entity operations
1129 */
1130
1131/*
1132 * csi2_link_setup - Setup CSI2 connections.
1133 * @entity : Pointer to media entity structure
1134 * @local : Pointer to local pad array
1135 * @remote : Pointer to remote pad array
1136 * @flags : Link flags
1137 * return -EINVAL or zero on success
1138 */
1139static int csi2_link_setup(struct media_entity *entity,
1140 const struct media_pad *local,
1141 const struct media_pad *remote, u32 flags)
1142{
1143 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
1144 struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
1145 struct isp_csi2_ctrl_cfg *ctrl = &csi2->ctrl;
1146
1147 /*
1148 * The ISP core doesn't support pipelines with multiple video outputs.
1149 * Revisit this when it will be implemented, and return -EBUSY for now.
1150 */
1151
1152 switch (local->index | media_entity_type(remote->entity)) {
1153 case CSI2_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
1154 if (flags & MEDIA_LNK_FL_ENABLED) {
1155 if (csi2->output & ~CSI2_OUTPUT_MEMORY)
1156 return -EBUSY;
1157 csi2->output |= CSI2_OUTPUT_MEMORY;
1158 } else {
1159 csi2->output &= ~CSI2_OUTPUT_MEMORY;
1160 }
1161 break;
1162
1163 case CSI2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
1164 if (flags & MEDIA_LNK_FL_ENABLED) {
1165 if (csi2->output & ~CSI2_OUTPUT_CCDC)
1166 return -EBUSY;
1167 csi2->output |= CSI2_OUTPUT_CCDC;
1168 } else {
1169 csi2->output &= ~CSI2_OUTPUT_CCDC;
1170 }
1171 break;
1172
1173 default:
1174 /* Link from camera to CSI2 is fixed... */
1175 return -EINVAL;
1176 }
1177
1178 ctrl->vp_only_enable =
1179 (csi2->output & CSI2_OUTPUT_MEMORY) ? false : true;
1180 ctrl->vp_clk_enable = !!(csi2->output & CSI2_OUTPUT_CCDC);
1181
1182 return 0;
1183}
1184
1185/* media operations */
1186static const struct media_entity_operations csi2_media_ops = {
1187 .link_setup = csi2_link_setup,
1188};
1189
1190/*
1191 * csi2_init_entities - Initialize subdev and media entity.
1192 * @csi2: Pointer to csi2 structure.
1193 * return -ENOMEM or zero on success
1194 */
1195static int csi2_init_entities(struct isp_csi2_device *csi2)
1196{
1197 struct v4l2_subdev *sd = &csi2->subdev;
1198 struct media_pad *pads = csi2->pads;
1199 struct media_entity *me = &sd->entity;
1200 int ret;
1201
1202 v4l2_subdev_init(sd, &csi2_ops);
1203 sd->internal_ops = &csi2_internal_ops;
1204 strlcpy(sd->name, "OMAP3 ISP CSI2a", sizeof(sd->name));
1205
1206 sd->grp_id = 1 << 16; /* group ID for isp subdevs */
1207 v4l2_set_subdevdata(sd, csi2);
1208 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1209
1210 pads[CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
1211 pads[CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
1212
1213 me->ops = &csi2_media_ops;
1214 ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0);
1215 if (ret < 0)
1216 return ret;
1217
1218 csi2_init_formats(sd, NULL);
1219
1220 /* Video device node */
1221 csi2->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1222 csi2->video_out.ops = &csi2_ispvideo_ops;
1223 csi2->video_out.bpl_alignment = 32;
1224 csi2->video_out.bpl_zero_padding = 1;
1225 csi2->video_out.bpl_max = 0x1ffe0;
1226 csi2->video_out.isp = csi2->isp;
1227 csi2->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
1228
1229 ret = omap3isp_video_init(&csi2->video_out, "CSI2a");
1230 if (ret < 0)
1231 return ret;
1232
1233 /* Connect the CSI2 subdev to the video node. */
1234 ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
1235 &csi2->video_out.video.entity, 0, 0);
1236 if (ret < 0)
1237 return ret;
1238
1239 return 0;
1240}
1241
1242void omap3isp_csi2_unregister_entities(struct isp_csi2_device *csi2)
1243{
1244 media_entity_cleanup(&csi2->subdev.entity);
1245
1246 v4l2_device_unregister_subdev(&csi2->subdev);
1247 omap3isp_video_unregister(&csi2->video_out);
1248}
1249
1250int omap3isp_csi2_register_entities(struct isp_csi2_device *csi2,
1251 struct v4l2_device *vdev)
1252{
1253 int ret;
1254
1255 /* Register the subdev and video nodes. */
1256 ret = v4l2_device_register_subdev(vdev, &csi2->subdev);
1257 if (ret < 0)
1258 goto error;
1259
1260 ret = omap3isp_video_register(&csi2->video_out, vdev);
1261 if (ret < 0)
1262 goto error;
1263
1264 return 0;
1265
1266error:
1267 omap3isp_csi2_unregister_entities(csi2);
1268 return ret;
1269}
1270
1271/* -----------------------------------------------------------------------------
1272 * ISP CSI2 initialisation and cleanup
1273 */
1274
1275/*
1276 * omap3isp_csi2_cleanup - Routine for module driver cleanup
1277 */
1278void omap3isp_csi2_cleanup(struct isp_device *isp)
1279{
1280}
1281
1282/*
1283 * omap3isp_csi2_init - Routine for module driver init
1284 */
1285int omap3isp_csi2_init(struct isp_device *isp)
1286{
1287 struct isp_csi2_device *csi2a = &isp->isp_csi2a;
1288 struct isp_csi2_device *csi2c = &isp->isp_csi2c;
1289 int ret;
1290
1291 csi2a->isp = isp;
1292 csi2a->available = 1;
1293 csi2a->regs1 = OMAP3_ISP_IOMEM_CSI2A_REGS1;
1294 csi2a->regs2 = OMAP3_ISP_IOMEM_CSI2A_REGS2;
1295 csi2a->phy = &isp->isp_csiphy2;
1296 csi2a->state = ISP_PIPELINE_STREAM_STOPPED;
1297 init_waitqueue_head(&csi2a->wait);
1298
1299 ret = csi2_init_entities(csi2a);
1300 if (ret < 0)
1301 goto fail;
1302
1303 if (isp->revision == ISP_REVISION_15_0) {
1304 csi2c->isp = isp;
1305 csi2c->available = 1;
1306 csi2c->regs1 = OMAP3_ISP_IOMEM_CSI2C_REGS1;
1307 csi2c->regs2 = OMAP3_ISP_IOMEM_CSI2C_REGS2;
1308 csi2c->phy = &isp->isp_csiphy1;
1309 csi2c->state = ISP_PIPELINE_STREAM_STOPPED;
1310 init_waitqueue_head(&csi2c->wait);
1311 }
1312
1313 return 0;
1314fail:
1315 omap3isp_csi2_cleanup(isp);
1316 return ret;
1317}
diff --git a/drivers/media/video/omap3isp/ispcsi2.h b/drivers/media/video/omap3isp/ispcsi2.h
new file mode 100644
index 000000000000..456fb7fb8a0f
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispcsi2.h
@@ -0,0 +1,166 @@
1/*
2 * ispcsi2.h
3 *
4 * TI OMAP3 ISP - CSI2 module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#ifndef OMAP3_ISP_CSI2_H
28#define OMAP3_ISP_CSI2_H
29
30#include <linux/types.h>
31#include <linux/videodev2.h>
32
33struct isp_csiphy;
34
35/* This is not an exhaustive list */
36enum isp_csi2_pix_formats {
37 CSI2_PIX_FMT_OTHERS = 0,
38 CSI2_PIX_FMT_YUV422_8BIT = 0x1e,
39 CSI2_PIX_FMT_YUV422_8BIT_VP = 0x9e,
40 CSI2_PIX_FMT_RAW10_EXP16 = 0xab,
41 CSI2_PIX_FMT_RAW10_EXP16_VP = 0x12f,
42 CSI2_PIX_FMT_RAW8 = 0x2a,
43 CSI2_PIX_FMT_RAW8_DPCM10_EXP16 = 0x2aa,
44 CSI2_PIX_FMT_RAW8_DPCM10_VP = 0x32a,
45 CSI2_PIX_FMT_RAW8_VP = 0x12a,
46 CSI2_USERDEF_8BIT_DATA1_DPCM10_VP = 0x340,
47 CSI2_USERDEF_8BIT_DATA1_DPCM10 = 0x2c0,
48 CSI2_USERDEF_8BIT_DATA1 = 0x40,
49};
50
51enum isp_csi2_irqevents {
52 OCP_ERR_IRQ = 0x4000,
53 SHORT_PACKET_IRQ = 0x2000,
54 ECC_CORRECTION_IRQ = 0x1000,
55 ECC_NO_CORRECTION_IRQ = 0x800,
56 COMPLEXIO2_ERR_IRQ = 0x400,
57 COMPLEXIO1_ERR_IRQ = 0x200,
58 FIFO_OVF_IRQ = 0x100,
59 CONTEXT7 = 0x80,
60 CONTEXT6 = 0x40,
61 CONTEXT5 = 0x20,
62 CONTEXT4 = 0x10,
63 CONTEXT3 = 0x8,
64 CONTEXT2 = 0x4,
65 CONTEXT1 = 0x2,
66 CONTEXT0 = 0x1,
67};
68
69enum isp_csi2_ctx_irqevents {
70 CTX_ECC_CORRECTION = 0x100,
71 CTX_LINE_NUMBER = 0x80,
72 CTX_FRAME_NUMBER = 0x40,
73 CTX_CS = 0x20,
74 CTX_LE = 0x8,
75 CTX_LS = 0x4,
76 CTX_FE = 0x2,
77 CTX_FS = 0x1,
78};
79
80enum isp_csi2_frame_mode {
81 ISP_CSI2_FRAME_IMMEDIATE,
82 ISP_CSI2_FRAME_AFTERFEC,
83};
84
85#define ISP_CSI2_MAX_CTX_NUM 7
86
87struct isp_csi2_ctx_cfg {
88 u8 ctxnum; /* context number 0 - 7 */
89 u8 dpcm_decompress;
90
91 /* Fields in CSI2_CTx_CTRL2 - locked by CSI2_CTx_CTRL1.CTX_EN */
92 u8 virtual_id;
93 u16 format_id; /* as in CSI2_CTx_CTRL2[9:0] */
94 u8 dpcm_predictor; /* 1: simple, 0: advanced */
95
96 /* Fields in CSI2_CTx_CTRL1/3 - Shadowed */
97 u16 alpha;
98 u16 data_offset;
99 u32 ping_addr;
100 u32 pong_addr;
101 u8 eof_enabled;
102 u8 eol_enabled;
103 u8 checksum_enabled;
104 u8 enabled;
105};
106
107struct isp_csi2_timing_cfg {
108 u8 ionum; /* IO1 or IO2 as in CSI2_TIMING */
109 unsigned force_rx_mode:1;
110 unsigned stop_state_16x:1;
111 unsigned stop_state_4x:1;
112 u16 stop_state_counter;
113};
114
115struct isp_csi2_ctrl_cfg {
116 bool vp_clk_enable;
117 bool vp_only_enable;
118 u8 vp_out_ctrl;
119 enum isp_csi2_frame_mode frame_mode;
120 bool ecc_enable;
121 bool if_enable;
122};
123
124#define CSI2_PAD_SINK 0
125#define CSI2_PAD_SOURCE 1
126#define CSI2_PADS_NUM 2
127
128#define CSI2_OUTPUT_CCDC (1 << 0)
129#define CSI2_OUTPUT_MEMORY (1 << 1)
130
131struct isp_csi2_device {
132 struct v4l2_subdev subdev;
133 struct media_pad pads[CSI2_PADS_NUM];
134 struct v4l2_mbus_framefmt formats[CSI2_PADS_NUM];
135
136 struct isp_video video_out;
137 struct isp_device *isp;
138
139 u8 available; /* Is the IP present on the silicon? */
140
141 /* mem resources - enums as defined in enum isp_mem_resources */
142 u8 regs1;
143 u8 regs2;
144
145 u32 output; /* output to CCDC, memory or both? */
146 bool dpcm_decompress;
147 unsigned int frame_skip;
148 bool use_fs_irq;
149
150 struct isp_csiphy *phy;
151 struct isp_csi2_ctx_cfg contexts[ISP_CSI2_MAX_CTX_NUM + 1];
152 struct isp_csi2_timing_cfg timing[2];
153 struct isp_csi2_ctrl_cfg ctrl;
154 enum isp_pipeline_stream_state state;
155 wait_queue_head_t wait;
156 atomic_t stopping;
157};
158
159int omap3isp_csi2_isr(struct isp_csi2_device *csi2);
160int omap3isp_csi2_reset(struct isp_csi2_device *csi2);
161int omap3isp_csi2_init(struct isp_device *isp);
162void omap3isp_csi2_cleanup(struct isp_device *isp);
163void omap3isp_csi2_unregister_entities(struct isp_csi2_device *csi2);
164int omap3isp_csi2_register_entities(struct isp_csi2_device *csi2,
165 struct v4l2_device *vdev);
166#endif /* OMAP3_ISP_CSI2_H */
diff --git a/drivers/media/video/omap3isp/ispcsiphy.c b/drivers/media/video/omap3isp/ispcsiphy.c
new file mode 100644
index 000000000000..5be37ce7d0c2
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispcsiphy.c
@@ -0,0 +1,247 @@
1/*
2 * ispcsiphy.c
3 *
4 * TI OMAP3 ISP - CSI PHY module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#include <linux/delay.h>
28#include <linux/device.h>
29#include <linux/regulator/consumer.h>
30
31#include "isp.h"
32#include "ispreg.h"
33#include "ispcsiphy.h"
34
35/*
36 * csiphy_lanes_config - Configuration of CSIPHY lanes.
37 *
38 * Updates HW configuration.
39 * Called with phy->mutex taken.
40 */
41static void csiphy_lanes_config(struct isp_csiphy *phy)
42{
43 unsigned int i;
44 u32 reg;
45
46 reg = isp_reg_readl(phy->isp, phy->cfg_regs, ISPCSI2_PHY_CFG);
47
48 for (i = 0; i < phy->num_data_lanes; i++) {
49 reg &= ~(ISPCSI2_PHY_CFG_DATA_POL_MASK(i + 1) |
50 ISPCSI2_PHY_CFG_DATA_POSITION_MASK(i + 1));
51 reg |= (phy->lanes.data[i].pol <<
52 ISPCSI2_PHY_CFG_DATA_POL_SHIFT(i + 1));
53 reg |= (phy->lanes.data[i].pos <<
54 ISPCSI2_PHY_CFG_DATA_POSITION_SHIFT(i + 1));
55 }
56
57 reg &= ~(ISPCSI2_PHY_CFG_CLOCK_POL_MASK |
58 ISPCSI2_PHY_CFG_CLOCK_POSITION_MASK);
59 reg |= phy->lanes.clk.pol << ISPCSI2_PHY_CFG_CLOCK_POL_SHIFT;
60 reg |= phy->lanes.clk.pos << ISPCSI2_PHY_CFG_CLOCK_POSITION_SHIFT;
61
62 isp_reg_writel(phy->isp, reg, phy->cfg_regs, ISPCSI2_PHY_CFG);
63}
64
65/*
66 * csiphy_power_autoswitch_enable
67 * @enable: Sets or clears the autoswitch function enable flag.
68 */
69static void csiphy_power_autoswitch_enable(struct isp_csiphy *phy, bool enable)
70{
71 isp_reg_clr_set(phy->isp, phy->cfg_regs, ISPCSI2_PHY_CFG,
72 ISPCSI2_PHY_CFG_PWR_AUTO,
73 enable ? ISPCSI2_PHY_CFG_PWR_AUTO : 0);
74}
75
76/*
77 * csiphy_set_power
78 * @power: Power state to be set.
79 *
80 * Returns 0 if successful, or -EBUSY if the retry count is exceeded.
81 */
82static int csiphy_set_power(struct isp_csiphy *phy, u32 power)
83{
84 u32 reg;
85 u8 retry_count;
86
87 isp_reg_clr_set(phy->isp, phy->cfg_regs, ISPCSI2_PHY_CFG,
88 ISPCSI2_PHY_CFG_PWR_CMD_MASK, power);
89
90 retry_count = 0;
91 do {
92 udelay(50);
93 reg = isp_reg_readl(phy->isp, phy->cfg_regs, ISPCSI2_PHY_CFG) &
94 ISPCSI2_PHY_CFG_PWR_STATUS_MASK;
95
96 if (reg != power >> 2)
97 retry_count++;
98
99 } while ((reg != power >> 2) && (retry_count < 100));
100
101 if (retry_count == 100) {
102 printk(KERN_ERR "CSI2 CIO set power failed!\n");
103 return -EBUSY;
104 }
105
106 return 0;
107}
108
109/*
110 * csiphy_dphy_config - Configure CSI2 D-PHY parameters.
111 *
112 * Called with phy->mutex taken.
113 */
114static void csiphy_dphy_config(struct isp_csiphy *phy)
115{
116 u32 reg;
117
118 /* Set up ISPCSIPHY_REG0 */
119 reg = isp_reg_readl(phy->isp, phy->phy_regs, ISPCSIPHY_REG0);
120
121 reg &= ~(ISPCSIPHY_REG0_THS_TERM_MASK |
122 ISPCSIPHY_REG0_THS_SETTLE_MASK);
123 reg |= phy->dphy.ths_term << ISPCSIPHY_REG0_THS_TERM_SHIFT;
124 reg |= phy->dphy.ths_settle << ISPCSIPHY_REG0_THS_SETTLE_SHIFT;
125
126 isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG0);
127
128 /* Set up ISPCSIPHY_REG1 */
129 reg = isp_reg_readl(phy->isp, phy->phy_regs, ISPCSIPHY_REG1);
130
131 reg &= ~(ISPCSIPHY_REG1_TCLK_TERM_MASK |
132 ISPCSIPHY_REG1_TCLK_MISS_MASK |
133 ISPCSIPHY_REG1_TCLK_SETTLE_MASK);
134 reg |= phy->dphy.tclk_term << ISPCSIPHY_REG1_TCLK_TERM_SHIFT;
135 reg |= phy->dphy.tclk_miss << ISPCSIPHY_REG1_TCLK_MISS_SHIFT;
136 reg |= phy->dphy.tclk_settle << ISPCSIPHY_REG1_TCLK_SETTLE_SHIFT;
137
138 isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG1);
139}
140
141static int csiphy_config(struct isp_csiphy *phy,
142 struct isp_csiphy_dphy_cfg *dphy,
143 struct isp_csiphy_lanes_cfg *lanes)
144{
145 unsigned int used_lanes = 0;
146 unsigned int i;
147
148 /* Clock and data lanes verification */
149 for (i = 0; i < phy->num_data_lanes; i++) {
150 if (lanes->data[i].pol > 1 || lanes->data[i].pos > 3)
151 return -EINVAL;
152
153 if (used_lanes & (1 << lanes->data[i].pos))
154 return -EINVAL;
155
156 used_lanes |= 1 << lanes->data[i].pos;
157 }
158
159 if (lanes->clk.pol > 1 || lanes->clk.pos > 3)
160 return -EINVAL;
161
162 if (lanes->clk.pos == 0 || used_lanes & (1 << lanes->clk.pos))
163 return -EINVAL;
164
165 mutex_lock(&phy->mutex);
166 phy->dphy = *dphy;
167 phy->lanes = *lanes;
168 mutex_unlock(&phy->mutex);
169
170 return 0;
171}
172
173int omap3isp_csiphy_acquire(struct isp_csiphy *phy)
174{
175 int rval;
176
177 if (phy->vdd == NULL) {
178 dev_err(phy->isp->dev, "Power regulator for CSI PHY not "
179 "available\n");
180 return -ENODEV;
181 }
182
183 mutex_lock(&phy->mutex);
184
185 rval = regulator_enable(phy->vdd);
186 if (rval < 0)
187 goto done;
188
189 omap3isp_csi2_reset(phy->csi2);
190
191 csiphy_dphy_config(phy);
192 csiphy_lanes_config(phy);
193
194 rval = csiphy_set_power(phy, ISPCSI2_PHY_CFG_PWR_CMD_ON);
195 if (rval) {
196 regulator_disable(phy->vdd);
197 goto done;
198 }
199
200 csiphy_power_autoswitch_enable(phy, true);
201 phy->phy_in_use = 1;
202
203done:
204 mutex_unlock(&phy->mutex);
205 return rval;
206}
207
208void omap3isp_csiphy_release(struct isp_csiphy *phy)
209{
210 mutex_lock(&phy->mutex);
211 if (phy->phy_in_use) {
212 csiphy_power_autoswitch_enable(phy, false);
213 csiphy_set_power(phy, ISPCSI2_PHY_CFG_PWR_CMD_OFF);
214 regulator_disable(phy->vdd);
215 phy->phy_in_use = 0;
216 }
217 mutex_unlock(&phy->mutex);
218}
219
220/*
221 * omap3isp_csiphy_init - Initialize the CSI PHY frontends
222 */
223int omap3isp_csiphy_init(struct isp_device *isp)
224{
225 struct isp_csiphy *phy1 = &isp->isp_csiphy1;
226 struct isp_csiphy *phy2 = &isp->isp_csiphy2;
227
228 isp->platform_cb.csiphy_config = csiphy_config;
229
230 phy2->isp = isp;
231 phy2->csi2 = &isp->isp_csi2a;
232 phy2->num_data_lanes = ISP_CSIPHY2_NUM_DATA_LANES;
233 phy2->cfg_regs = OMAP3_ISP_IOMEM_CSI2A_REGS1;
234 phy2->phy_regs = OMAP3_ISP_IOMEM_CSIPHY2;
235 mutex_init(&phy2->mutex);
236
237 if (isp->revision == ISP_REVISION_15_0) {
238 phy1->isp = isp;
239 phy1->csi2 = &isp->isp_csi2c;
240 phy1->num_data_lanes = ISP_CSIPHY1_NUM_DATA_LANES;
241 phy1->cfg_regs = OMAP3_ISP_IOMEM_CSI2C_REGS1;
242 phy1->phy_regs = OMAP3_ISP_IOMEM_CSIPHY1;
243 mutex_init(&phy1->mutex);
244 }
245
246 return 0;
247}
diff --git a/drivers/media/video/omap3isp/ispcsiphy.h b/drivers/media/video/omap3isp/ispcsiphy.h
new file mode 100644
index 000000000000..9596dc6830a6
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispcsiphy.h
@@ -0,0 +1,74 @@
1/*
2 * ispcsiphy.h
3 *
4 * TI OMAP3 ISP - CSI PHY module
5 *
6 * Copyright (C) 2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
8 *
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#ifndef OMAP3_ISP_CSI_PHY_H
28#define OMAP3_ISP_CSI_PHY_H
29
30struct isp_csi2_device;
31struct regulator;
32
33struct csiphy_lane {
34 u8 pos;
35 u8 pol;
36};
37
38#define ISP_CSIPHY2_NUM_DATA_LANES 2
39#define ISP_CSIPHY1_NUM_DATA_LANES 1
40
41struct isp_csiphy_lanes_cfg {
42 struct csiphy_lane data[ISP_CSIPHY2_NUM_DATA_LANES];
43 struct csiphy_lane clk;
44};
45
46struct isp_csiphy_dphy_cfg {
47 u8 ths_term;
48 u8 ths_settle;
49 u8 tclk_term;
50 unsigned tclk_miss:1;
51 u8 tclk_settle;
52};
53
54struct isp_csiphy {
55 struct isp_device *isp;
56 struct mutex mutex; /* serialize csiphy configuration */
57 u8 phy_in_use;
58 struct isp_csi2_device *csi2;
59 struct regulator *vdd;
60
61 /* mem resources - enums as defined in enum isp_mem_resources */
62 unsigned int cfg_regs;
63 unsigned int phy_regs;
64
65 u8 num_data_lanes; /* number of CSI2 Data Lanes supported */
66 struct isp_csiphy_lanes_cfg lanes;
67 struct isp_csiphy_dphy_cfg dphy;
68};
69
70int omap3isp_csiphy_acquire(struct isp_csiphy *phy);
71void omap3isp_csiphy_release(struct isp_csiphy *phy);
72int omap3isp_csiphy_init(struct isp_device *isp);
73
74#endif /* OMAP3_ISP_CSI_PHY_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-13 11:36:50 -0500