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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / video / davinci / isif.c
blob5278fe7d6d0c3638cd1eba5d6860fb0f94066361
1 /*
2 * Copyright (C) 2008-2009 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Image Sensor Interface (ISIF) driver
19 *
20 * This driver is for configuring the ISIF IP available on DM365 or any other
21 * TI SoCs. This is used for capturing yuv or bayer video or image data
22 * from a decoder or sensor. This IP is similar to the CCDC IP on DM355
23 * and DM6446, but with enhanced or additional ip blocks. The driver
24 * configures the ISIF upon commands from the vpfe bridge driver through
25 * ccdc_hw_device interface.
26 *
27 * TODO: 1) Raw bayer parameter settings and bayer capture
28 * 2) Add support for control ioctl
29 */
30 #include <linux/delay.h>
31 #include <linux/platform_device.h>
32 #include <linux/uaccess.h>
33 #include <linux/io.h>
34 #include <linux/videodev2.h>
35 #include <linux/clk.h>
36 #include <linux/err.h>
37 #include <linux/module.h>
38
39 #include <mach/mux.h>
40
41 #include <media/davinci/isif.h>
42 #include <media/davinci/vpss.h>
43
44 #include "isif_regs.h"
45 #include "ccdc_hw_device.h"
46
47 /* Defaults for module configuration parameters */
48 static struct isif_config_params_raw isif_config_defaults = {
49 .linearize = {
50 .en = 0,
51 .corr_shft = ISIF_NO_SHIFT,
52 .scale_fact = {1, 0},
53 },
54 .df_csc = {
55 .df_or_csc = 0,
56 .csc = {
57 .en = 0,
58 },
59 },
60 .dfc = {
61 .en = 0,
62 },
63 .bclamp = {
64 .en = 0,
65 },
66 .gain_offset = {
67 .gain = {
68 .r_ye = {1, 0},
69 .gr_cy = {1, 0},
70 .gb_g = {1, 0},
71 .b_mg = {1, 0},
72 },
73 },
74 .culling = {
75 .hcpat_odd = 0xff,
76 .hcpat_even = 0xff,
77 .vcpat = 0xff,
78 },
79 .compress = {
80 .alg = ISIF_ALAW,
81 },
82 };
83
84 /* ISIF operation configuration */
85 static struct isif_oper_config {
86 struct device *dev;
87 enum vpfe_hw_if_type if_type;
88 struct isif_ycbcr_config ycbcr;
89 struct isif_params_raw bayer;
90 enum isif_data_pack data_pack;
91 /* Master clock */
92 struct clk *mclk;
93 /* ISIF base address */
94 void __iomem *base_addr;
95 /* ISIF Linear Table 0 */
96 void __iomem *linear_tbl0_addr;
97 /* ISIF Linear Table 1 */
98 void __iomem *linear_tbl1_addr;
99 } isif_cfg = {
100 .ycbcr = {
101 .pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
102 .frm_fmt = CCDC_FRMFMT_INTERLACED,
103 .win = ISIF_WIN_NTSC,
104 .fid_pol = VPFE_PINPOL_POSITIVE,
105 .vd_pol = VPFE_PINPOL_POSITIVE,
106 .hd_pol = VPFE_PINPOL_POSITIVE,
107 .pix_order = CCDC_PIXORDER_CBYCRY,
108 .buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED,
109 },
110 .bayer = {
111 .pix_fmt = CCDC_PIXFMT_RAW,
112 .frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
113 .win = ISIF_WIN_VGA,
114 .fid_pol = VPFE_PINPOL_POSITIVE,
115 .vd_pol = VPFE_PINPOL_POSITIVE,
116 .hd_pol = VPFE_PINPOL_POSITIVE,
117 .gain = {
118 .r_ye = {1, 0},
119 .gr_cy = {1, 0},
120 .gb_g = {1, 0},
121 .b_mg = {1, 0},
122 },
123 .cfa_pat = ISIF_CFA_PAT_MOSAIC,
124 .data_msb = ISIF_BIT_MSB_11,
125 .config_params = {
126 .data_shift = ISIF_NO_SHIFT,
127 .col_pat_field0 = {
128 .olop = ISIF_GREEN_BLUE,
129 .olep = ISIF_BLUE,
130 .elop = ISIF_RED,
131 .elep = ISIF_GREEN_RED,
132 },
133 .col_pat_field1 = {
134 .olop = ISIF_GREEN_BLUE,
135 .olep = ISIF_BLUE,
136 .elop = ISIF_RED,
137 .elep = ISIF_GREEN_RED,
138 },
139 .test_pat_gen = 0,
140 },
141 },
142 .data_pack = ISIF_DATA_PACK8,
143 };
144
145 /* Raw Bayer formats */
146 static const u32 isif_raw_bayer_pix_formats[] = {
147 V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
148
149 /* Raw YUV formats */
150 static const u32 isif_raw_yuv_pix_formats[] = {
151 V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
152
153 /* register access routines */
154 static inline u32 regr(u32 offset)
155 {
156 return __raw_readl(isif_cfg.base_addr + offset);
157 }
158
159 static inline void regw(u32 val, u32 offset)
160 {
161 __raw_writel(val, isif_cfg.base_addr + offset);
162 }
163
164 /* reg_modify() - read, modify and write register */
165 static inline u32 reg_modify(u32 mask, u32 val, u32 offset)
166 {
167 u32 new_val = (regr(offset) & ~mask) | (val & mask);
168
169 regw(new_val, offset);
170 return new_val;
171 }
172
173 static inline void regw_lin_tbl(u32 val, u32 offset, int i)
174 {
175 if (!i)
176 __raw_writel(val, isif_cfg.linear_tbl0_addr + offset);
177 else
178 __raw_writel(val, isif_cfg.linear_tbl1_addr + offset);
179 }
180
181 static void isif_disable_all_modules(void)
182 {
183 /* disable BC */
184 regw(0, CLAMPCFG);
185 /* disable vdfc */
186 regw(0, DFCCTL);
187 /* disable CSC */
188 regw(0, CSCCTL);
189 /* disable linearization */
190 regw(0, LINCFG0);
191 /* disable other modules here as they are supported */
192 }
193
194 static void isif_enable(int en)
195 {
196 if (!en) {
197 /* Before disable isif, disable all ISIF modules */
198 isif_disable_all_modules();
199 /*
200 * wait for next VD. Assume lowest scan rate is 12 Hz. So
201 * 100 msec delay is good enough
202 */
203 msleep(100);
204 }
205 reg_modify(ISIF_SYNCEN_VDHDEN_MASK, en, SYNCEN);
206 }
207
208 static void isif_enable_output_to_sdram(int en)
209 {
210 reg_modify(ISIF_SYNCEN_WEN_MASK, en << ISIF_SYNCEN_WEN_SHIFT, SYNCEN);
211 }
212
213 static void isif_config_culling(struct isif_cul *cul)
214 {
215 u32 val;
216
217 /* Horizontal pattern */
218 val = (cul->hcpat_even << CULL_PAT_EVEN_LINE_SHIFT) | cul->hcpat_odd;
219 regw(val, CULH);
220
221 /* vertical pattern */
222 regw(cul->vcpat, CULV);
223
224 /* LPF */
225 reg_modify(ISIF_LPF_MASK << ISIF_LPF_SHIFT,
226 cul->en_lpf << ISIF_LPF_SHIFT, MODESET);
227 }
228
229 static void isif_config_gain_offset(void)
230 {
231 struct isif_gain_offsets_adj *gain_off_p =
232 &isif_cfg.bayer.config_params.gain_offset;
233 u32 val;
234
235 val = (!!gain_off_p->gain_sdram_en << GAIN_SDRAM_EN_SHIFT) |
236 (!!gain_off_p->gain_ipipe_en << GAIN_IPIPE_EN_SHIFT) |
237 (!!gain_off_p->gain_h3a_en << GAIN_H3A_EN_SHIFT) |
238 (!!gain_off_p->offset_sdram_en << OFST_SDRAM_EN_SHIFT) |
239 (!!gain_off_p->offset_ipipe_en << OFST_IPIPE_EN_SHIFT) |
240 (!!gain_off_p->offset_h3a_en << OFST_H3A_EN_SHIFT);
241
242 reg_modify(GAIN_OFFSET_EN_MASK, val, CGAMMAWD);
243
244 val = (gain_off_p->gain.r_ye.integer << GAIN_INTEGER_SHIFT) |
245 gain_off_p->gain.r_ye.decimal;
246 regw(val, CRGAIN);
247
248 val = (gain_off_p->gain.gr_cy.integer << GAIN_INTEGER_SHIFT) |
249 gain_off_p->gain.gr_cy.decimal;
250 regw(val, CGRGAIN);
251
252 val = (gain_off_p->gain.gb_g.integer << GAIN_INTEGER_SHIFT) |
253 gain_off_p->gain.gb_g.decimal;
254 regw(val, CGBGAIN);
255
256 val = (gain_off_p->gain.b_mg.integer << GAIN_INTEGER_SHIFT) |
257 gain_off_p->gain.b_mg.decimal;
258 regw(val, CBGAIN);
259
260 regw(gain_off_p->offset, COFSTA);
261 }
262
263 static void isif_restore_defaults(void)
264 {
265 enum vpss_ccdc_source_sel source = VPSS_CCDCIN;
266
267 dev_dbg(isif_cfg.dev, "\nstarting isif_restore_defaults...");
268 isif_cfg.bayer.config_params = isif_config_defaults;
269 /* Enable clock to ISIF, IPIPEIF and BL */
270 vpss_enable_clock(VPSS_CCDC_CLOCK, 1);
271 vpss_enable_clock(VPSS_IPIPEIF_CLOCK, 1);
272 vpss_enable_clock(VPSS_BL_CLOCK, 1);
273 /* Set default offset and gain */
274 isif_config_gain_offset();
275 vpss_select_ccdc_source(source);
276 dev_dbg(isif_cfg.dev, "\nEnd of isif_restore_defaults...");
277 }
278
279 static int isif_open(struct device *device)
280 {
281 isif_restore_defaults();
282 return 0;
283 }
284
285 /* This function will configure the window size to be capture in ISIF reg */
286 static void isif_setwin(struct v4l2_rect *image_win,
287 enum ccdc_frmfmt frm_fmt, int ppc)
288 {
289 int horz_start, horz_nr_pixels;
290 int vert_start, vert_nr_lines;
291 int mid_img = 0;
292
293 dev_dbg(isif_cfg.dev, "\nStarting isif_setwin...");
294 /*
295 * ppc - per pixel count. indicates how many pixels per cell
296 * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
297 * raw capture this is 1
298 */
299 horz_start = image_win->left << (ppc - 1);
300 horz_nr_pixels = ((image_win->width) << (ppc - 1)) - 1;
301
302 /* Writing the horizontal info into the registers */
303 regw(horz_start & START_PX_HOR_MASK, SPH);
304 regw(horz_nr_pixels & NUM_PX_HOR_MASK, LNH);
305 vert_start = image_win->top;
306
307 if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
308 vert_nr_lines = (image_win->height >> 1) - 1;
309 vert_start >>= 1;
310 /* To account for VD since line 0 doesn't have any data */
311 vert_start += 1;
312 } else {
313 /* To account for VD since line 0 doesn't have any data */
314 vert_start += 1;
315 vert_nr_lines = image_win->height - 1;
316 /* configure VDINT0 and VDINT1 */
317 mid_img = vert_start + (image_win->height / 2);
318 regw(mid_img, VDINT1);
319 }
320
321 regw(0, VDINT0);
322 regw(vert_start & START_VER_ONE_MASK, SLV0);
323 regw(vert_start & START_VER_TWO_MASK, SLV1);
324 regw(vert_nr_lines & NUM_LINES_VER, LNV);
325 }
326
327 static void isif_config_bclamp(struct isif_black_clamp *bc)
328 {
329 u32 val;
330
331 /*
332 * DC Offset is always added to image data irrespective of bc enable
333 * status
334 */
335 regw(bc->dc_offset, CLDCOFST);
336
337 if (bc->en) {
338 val = bc->bc_mode_color << ISIF_BC_MODE_COLOR_SHIFT;
339
340 /* Enable BC and horizontal clamp caculation paramaters */
341 val = val | 1 | (bc->horz.mode << ISIF_HORZ_BC_MODE_SHIFT);
342
343 regw(val, CLAMPCFG);
344
345 if (bc->horz.mode != ISIF_HORZ_BC_DISABLE) {
346 /*
347 * Window count for calculation
348 * Base window selection
349 * pixel limit
350 * Horizontal size of window
351 * vertical size of the window
352 * Horizontal start position of the window
353 * Vertical start position of the window
354 */
355 val = bc->horz.win_count_calc |
356 ((!!bc->horz.base_win_sel_calc) <<
357 ISIF_HORZ_BC_WIN_SEL_SHIFT) |
358 ((!!bc->horz.clamp_pix_limit) <<
359 ISIF_HORZ_BC_PIX_LIMIT_SHIFT) |
360 (bc->horz.win_h_sz_calc <<
361 ISIF_HORZ_BC_WIN_H_SIZE_SHIFT) |
362 (bc->horz.win_v_sz_calc <<
363 ISIF_HORZ_BC_WIN_V_SIZE_SHIFT);
364 regw(val, CLHWIN0);
365
366 regw(bc->horz.win_start_h_calc, CLHWIN1);
367 regw(bc->horz.win_start_v_calc, CLHWIN2);
368 }
369
370 /* vertical clamp caculation paramaters */
371
372 /* Reset clamp value sel for previous line */
373 val |=
374 (bc->vert.reset_val_sel << ISIF_VERT_BC_RST_VAL_SEL_SHIFT) |
375 (bc->vert.line_ave_coef << ISIF_VERT_BC_LINE_AVE_COEF_SHIFT);
376 regw(val, CLVWIN0);
377
378 /* Optical Black horizontal start position */
379 regw(bc->vert.ob_start_h, CLVWIN1);
380 /* Optical Black vertical start position */
381 regw(bc->vert.ob_start_v, CLVWIN2);
382 /* Optical Black vertical size for calculation */
383 regw(bc->vert.ob_v_sz_calc, CLVWIN3);
384 /* Vertical start position for BC subtraction */
385 regw(bc->vert_start_sub, CLSV);
386 }
387 }
388
389 static void isif_config_linearization(struct isif_linearize *linearize)
390 {
391 u32 val, i;
392
393 if (!linearize->en) {
394 regw(0, LINCFG0);
395 return;
396 }
397
398 /* shift value for correction & enable linearization (set lsb) */
399 val = (linearize->corr_shft << ISIF_LIN_CORRSFT_SHIFT) | 1;
400 regw(val, LINCFG0);
401
402 /* Scale factor */
403 val = ((!!linearize->scale_fact.integer) <<
404 ISIF_LIN_SCALE_FACT_INTEG_SHIFT) |
405 linearize->scale_fact.decimal;
406 regw(val, LINCFG1);
407
408 for (i = 0; i < ISIF_LINEAR_TAB_SIZE; i++) {
409 if (i % 2)
410 regw_lin_tbl(linearize->table[i], ((i >> 1) << 2), 1);
411 else
412 regw_lin_tbl(linearize->table[i], ((i >> 1) << 2), 0);
413 }
414 }
415
416 static int isif_config_dfc(struct isif_dfc *vdfc)
417 {
418 /* initialize retries to loop for max ~ 250 usec */
419 u32 val, count, retries = loops_per_jiffy / (4000/HZ);
420 int i;
421
422 if (!vdfc->en)
423 return 0;
424
425 /* Correction mode */
426 val = (vdfc->corr_mode << ISIF_VDFC_CORR_MOD_SHIFT);
427
428 /* Correct whole line or partial */
429 if (vdfc->corr_whole_line)
430 val |= 1 << ISIF_VDFC_CORR_WHOLE_LN_SHIFT;
431
432 /* level shift value */
433 val |= vdfc->def_level_shift << ISIF_VDFC_LEVEL_SHFT_SHIFT;
434
435 regw(val, DFCCTL);
436
437 /* Defect saturation level */
438 regw(vdfc->def_sat_level, VDFSATLV);
439
440 regw(vdfc->table[0].pos_vert, DFCMEM0);
441 regw(vdfc->table[0].pos_horz, DFCMEM1);
442 if (vdfc->corr_mode == ISIF_VDFC_NORMAL ||
443 vdfc->corr_mode == ISIF_VDFC_HORZ_INTERPOL_IF_SAT) {
444 regw(vdfc->table[0].level_at_pos, DFCMEM2);
445 regw(vdfc->table[0].level_up_pixels, DFCMEM3);
446 regw(vdfc->table[0].level_low_pixels, DFCMEM4);
447 }
448
449 /* set DFCMARST and set DFCMWR */
450 val = regr(DFCMEMCTL) | (1 << ISIF_DFCMEMCTL_DFCMARST_SHIFT) | 1;
451 regw(val, DFCMEMCTL);
452
453 count = retries;
454 while (count && (regr(DFCMEMCTL) & 0x1))
455 count--;
456
457 if (!count) {
458 dev_dbg(isif_cfg.dev, "defect table write timeout !!!\n");
459 return -1;
460 }
461
462 for (i = 1; i < vdfc->num_vdefects; i++) {
463 regw(vdfc->table[i].pos_vert, DFCMEM0);
464 regw(vdfc->table[i].pos_horz, DFCMEM1);
465 if (vdfc->corr_mode == ISIF_VDFC_NORMAL ||
466 vdfc->corr_mode == ISIF_VDFC_HORZ_INTERPOL_IF_SAT) {
467 regw(vdfc->table[i].level_at_pos, DFCMEM2);
468 regw(vdfc->table[i].level_up_pixels, DFCMEM3);
469 regw(vdfc->table[i].level_low_pixels, DFCMEM4);
470 }
471 val = regr(DFCMEMCTL);
472 /* clear DFCMARST and set DFCMWR */
473 val &= ~BIT(ISIF_DFCMEMCTL_DFCMARST_SHIFT);
474 val |= 1;
475 regw(val, DFCMEMCTL);
476
477 count = retries;
478 while (count && (regr(DFCMEMCTL) & 0x1))
479 count--;
480
481 if (!count) {
482 dev_err(isif_cfg.dev,
483 "defect table write timeout !!!\n");
484 return -1;
485 }
486 }
487 if (vdfc->num_vdefects < ISIF_VDFC_TABLE_SIZE) {
488 /* Extra cycle needed */
489 regw(0, DFCMEM0);
490 regw(0x1FFF, DFCMEM1);
491 regw(1, DFCMEMCTL);
492 }
493
494 /* enable VDFC */
495 reg_modify((1 << ISIF_VDFC_EN_SHIFT), (1 << ISIF_VDFC_EN_SHIFT),
496 DFCCTL);
497 return 0;
498 }
499
500 static void isif_config_csc(struct isif_df_csc *df_csc)
501 {
502 u32 val1 = 0, val2 = 0, i;
503
504 if (!df_csc->csc.en) {
505 regw(0, CSCCTL);
506 return;
507 }
508 for (i = 0; i < ISIF_CSC_NUM_COEFF; i++) {
509 if ((i % 2) == 0) {
510 /* CSCM - LSB */
511 val1 = (df_csc->csc.coeff[i].integer <<
512 ISIF_CSC_COEF_INTEG_SHIFT) |
513 df_csc->csc.coeff[i].decimal;
514 } else {
515
516 /* CSCM - MSB */
517 val2 = (df_csc->csc.coeff[i].integer <<
518 ISIF_CSC_COEF_INTEG_SHIFT) |
519 df_csc->csc.coeff[i].decimal;
520 val2 <<= ISIF_CSCM_MSB_SHIFT;
521 val2 |= val1;
522 regw(val2, (CSCM0 + ((i - 1) << 1)));
523 }
524 }
525
526 /* program the active area */
527 regw(df_csc->start_pix, FMTSPH);
528 /*
529 * one extra pixel as required for CSC. Actually number of
530 * pixel - 1 should be configured in this register. So we
531 * need to subtract 1 before writing to FMTSPH, but we will
532 * not do this since csc requires one extra pixel
533 */
534 regw(df_csc->num_pixels, FMTLNH);
535 regw(df_csc->start_line, FMTSLV);
536 /*
537 * one extra line as required for CSC. See reason documented for
538 * num_pixels
539 */
540 regw(df_csc->num_lines, FMTLNV);
541
542 /* Enable CSC */
543 regw(1, CSCCTL);
544 }
545
546 static int isif_config_raw(void)
547 {
548 struct isif_params_raw *params = &isif_cfg.bayer;
549 struct isif_config_params_raw *module_params =
550 &isif_cfg.bayer.config_params;
551 struct vpss_pg_frame_size frame_size;
552 struct vpss_sync_pol sync;
553 u32 val;
554
555 dev_dbg(isif_cfg.dev, "\nStarting isif_config_raw..\n");
556
557 /*
558 * Configure CCDCFG register:-
559 * Set CCD Not to swap input since input is RAW data
560 * Set FID detection function to Latch at V-Sync
561 * Set WENLOG - isif valid area
562 * Set TRGSEL
563 * Set EXTRG
564 * Packed to 8 or 16 bits
565 */
566
567 val = ISIF_YCINSWP_RAW | ISIF_CCDCFG_FIDMD_LATCH_VSYNC |
568 ISIF_CCDCFG_WENLOG_AND | ISIF_CCDCFG_TRGSEL_WEN |
569 ISIF_CCDCFG_EXTRG_DISABLE | isif_cfg.data_pack;
570
571 dev_dbg(isif_cfg.dev, "Writing 0x%x to ...CCDCFG \n", val);
572 regw(val, CCDCFG);
573
574 /*
575 * Configure the vertical sync polarity(MODESET.VDPOL)
576 * Configure the horizontal sync polarity (MODESET.HDPOL)
577 * Configure frame id polarity (MODESET.FLDPOL)
578 * Configure data polarity
579 * Configure External WEN Selection
580 * Configure frame format(progressive or interlace)
581 * Configure pixel format (Input mode)
582 * Configure the data shift
583 */
584
585 val = ISIF_VDHDOUT_INPUT | (params->vd_pol << ISIF_VD_POL_SHIFT) |
586 (params->hd_pol << ISIF_HD_POL_SHIFT) |
587 (params->fid_pol << ISIF_FID_POL_SHIFT) |
588 (ISIF_DATAPOL_NORMAL << ISIF_DATAPOL_SHIFT) |
589 (ISIF_EXWEN_DISABLE << ISIF_EXWEN_SHIFT) |
590 (params->frm_fmt << ISIF_FRM_FMT_SHIFT) |
591 (params->pix_fmt << ISIF_INPUT_SHIFT) |
592 (params->config_params.data_shift << ISIF_DATASFT_SHIFT);
593
594 regw(val, MODESET);
595 dev_dbg(isif_cfg.dev, "Writing 0x%x to MODESET...\n", val);
596
597 /*
598 * Configure GAMMAWD register
599 * CFA pattern setting
600 */
601 val = params->cfa_pat << ISIF_GAMMAWD_CFA_SHIFT;
602
603 /* Gamma msb */
604 if (module_params->compress.alg == ISIF_ALAW)
605 val |= ISIF_ALAW_ENABLE;
606
607 val |= (params->data_msb << ISIF_ALAW_GAMA_WD_SHIFT);
608 regw(val, CGAMMAWD);
609
610 /* Configure DPCM compression settings */
611 if (module_params->compress.alg == ISIF_DPCM) {
612 val = BIT(ISIF_DPCM_EN_SHIFT) |
613 (module_params->compress.pred <<
614 ISIF_DPCM_PREDICTOR_SHIFT);
615 }
616
617 regw(val, MISC);
618
619 /* Configure Gain & Offset */
620 isif_config_gain_offset();
621
622 /* Configure Color pattern */
623 val = (params->config_params.col_pat_field0.olop) |
624 (params->config_params.col_pat_field0.olep << 2) |
625 (params->config_params.col_pat_field0.elop << 4) |
626 (params->config_params.col_pat_field0.elep << 6) |
627 (params->config_params.col_pat_field1.olop << 8) |
628 (params->config_params.col_pat_field1.olep << 10) |
629 (params->config_params.col_pat_field1.elop << 12) |
630 (params->config_params.col_pat_field1.elep << 14);
631 regw(val, CCOLP);
632 dev_dbg(isif_cfg.dev, "Writing %x to CCOLP ...\n", val);
633
634 /* Configure HSIZE register */
635 val = (!!params->horz_flip_en) << ISIF_HSIZE_FLIP_SHIFT;
636
637 /* calculate line offset in 32 bytes based on pack value */
638 if (isif_cfg.data_pack == ISIF_PACK_8BIT)
639 val |= ((params->win.width + 31) >> 5);
640 else if (isif_cfg.data_pack == ISIF_PACK_12BIT)
641 val |= (((params->win.width +
642 (params->win.width >> 2)) + 31) >> 5);
643 else
644 val |= (((params->win.width * 2) + 31) >> 5);
645 regw(val, HSIZE);
646
647 /* Configure SDOFST register */
648 if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
649 if (params->image_invert_en) {
650 /* For interlace inverse mode */
651 regw(0x4B6D, SDOFST);
652 dev_dbg(isif_cfg.dev, "Writing 0x4B6D to SDOFST...\n");
653 } else {
654 /* For interlace non inverse mode */
655 regw(0x0B6D, SDOFST);
656 dev_dbg(isif_cfg.dev, "Writing 0x0B6D to SDOFST...\n");
657 }
658 } else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
659 if (params->image_invert_en) {
660 /* For progressive inverse mode */
661 regw(0x4000, SDOFST);
662 dev_dbg(isif_cfg.dev, "Writing 0x4000 to SDOFST...\n");
663 } else {
664 /* For progressive non inverse mode */
665 regw(0x0000, SDOFST);
666 dev_dbg(isif_cfg.dev, "Writing 0x0000 to SDOFST...\n");
667 }
668 }
669
670 /* Configure video window */
671 isif_setwin(&params->win, params->frm_fmt, 1);
672
673 /* Configure Black Clamp */
674 isif_config_bclamp(&module_params->bclamp);
675
676 /* Configure Vertical Defection Pixel Correction */
677 if (isif_config_dfc(&module_params->dfc) < 0)
678 return -EFAULT;
679
680 if (!module_params->df_csc.df_or_csc)
681 /* Configure Color Space Conversion */
682 isif_config_csc(&module_params->df_csc);
683
684 isif_config_linearization(&module_params->linearize);
685
686 /* Configure Culling */
687 isif_config_culling(&module_params->culling);
688
689 /* Configure horizontal and vertical offsets(DFC,LSC,Gain) */
690 regw(module_params->horz_offset, DATAHOFST);
691 regw(module_params->vert_offset, DATAVOFST);
692
693 /* Setup test pattern if enabled */
694 if (params->config_params.test_pat_gen) {
695 /* Use the HD/VD pol settings from user */
696 sync.ccdpg_hdpol = params->hd_pol;
697 sync.ccdpg_vdpol = params->vd_pol;
698 dm365_vpss_set_sync_pol(sync);
699 frame_size.hlpfr = isif_cfg.bayer.win.width;
700 frame_size.pplen = isif_cfg.bayer.win.height;
701 dm365_vpss_set_pg_frame_size(frame_size);
702 vpss_select_ccdc_source(VPSS_PGLPBK);
703 }
704
705 dev_dbg(isif_cfg.dev, "\nEnd of isif_config_ycbcr...\n");
706 return 0;
707 }
708
709 static int isif_set_buftype(enum ccdc_buftype buf_type)
710 {
711 if (isif_cfg.if_type == VPFE_RAW_BAYER)
712 isif_cfg.bayer.buf_type = buf_type;
713 else
714 isif_cfg.ycbcr.buf_type = buf_type;
715
716 return 0;
717
718 }
719 static enum ccdc_buftype isif_get_buftype(void)
720 {
721 if (isif_cfg.if_type == VPFE_RAW_BAYER)
722 return isif_cfg.bayer.buf_type;
723
724 return isif_cfg.ycbcr.buf_type;
725 }
726
727 static int isif_enum_pix(u32 *pix, int i)
728 {
729 int ret = -EINVAL;
730
731 if (isif_cfg.if_type == VPFE_RAW_BAYER) {
732 if (i < ARRAY_SIZE(isif_raw_bayer_pix_formats)) {
733 *pix = isif_raw_bayer_pix_formats[i];
734 ret = 0;
735 }
736 } else {
737 if (i < ARRAY_SIZE(isif_raw_yuv_pix_formats)) {
738 *pix = isif_raw_yuv_pix_formats[i];
739 ret = 0;
740 }
741 }
742
743 return ret;
744 }
745
746 static int isif_set_pixel_format(unsigned int pixfmt)
747 {
748 if (isif_cfg.if_type == VPFE_RAW_BAYER) {
749 if (pixfmt == V4L2_PIX_FMT_SBGGR8) {
750 if ((isif_cfg.bayer.config_params.compress.alg !=
751 ISIF_ALAW) &&
752 (isif_cfg.bayer.config_params.compress.alg !=
753 ISIF_DPCM)) {
754 dev_dbg(isif_cfg.dev,
755 "Either configure A-Law or DPCM\n");
756 return -EINVAL;
757 }
758 isif_cfg.data_pack = ISIF_PACK_8BIT;
759 } else if (pixfmt == V4L2_PIX_FMT_SBGGR16) {
760 isif_cfg.bayer.config_params.compress.alg =
761 ISIF_NO_COMPRESSION;
762 isif_cfg.data_pack = ISIF_PACK_16BIT;
763 } else
764 return -EINVAL;
765 isif_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
766 } else {
767 if (pixfmt == V4L2_PIX_FMT_YUYV)
768 isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
769 else if (pixfmt == V4L2_PIX_FMT_UYVY)
770 isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
771 else
772 return -EINVAL;
773 isif_cfg.data_pack = ISIF_PACK_8BIT;
774 }
775 return 0;
776 }
777
778 static u32 isif_get_pixel_format(void)
779 {
780 u32 pixfmt;
781
782 if (isif_cfg.if_type == VPFE_RAW_BAYER)
783 if (isif_cfg.bayer.config_params.compress.alg == ISIF_ALAW ||
784 isif_cfg.bayer.config_params.compress.alg == ISIF_DPCM)
785 pixfmt = V4L2_PIX_FMT_SBGGR8;
786 else
787 pixfmt = V4L2_PIX_FMT_SBGGR16;
788 else {
789 if (isif_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
790 pixfmt = V4L2_PIX_FMT_YUYV;
791 else
792 pixfmt = V4L2_PIX_FMT_UYVY;
793 }
794 return pixfmt;
795 }
796
797 static int isif_set_image_window(struct v4l2_rect *win)
798 {
799 if (isif_cfg.if_type == VPFE_RAW_BAYER) {
800 isif_cfg.bayer.win.top = win->top;
801 isif_cfg.bayer.win.left = win->left;
802 isif_cfg.bayer.win.width = win->width;
803 isif_cfg.bayer.win.height = win->height;
804 } else {
805 isif_cfg.ycbcr.win.top = win->top;
806 isif_cfg.ycbcr.win.left = win->left;
807 isif_cfg.ycbcr.win.width = win->width;
808 isif_cfg.ycbcr.win.height = win->height;
809 }
810 return 0;
811 }
812
813 static void isif_get_image_window(struct v4l2_rect *win)
814 {
815 if (isif_cfg.if_type == VPFE_RAW_BAYER)
816 *win = isif_cfg.bayer.win;
817 else
818 *win = isif_cfg.ycbcr.win;
819 }
820
821 static unsigned int isif_get_line_length(void)
822 {
823 unsigned int len;
824
825 if (isif_cfg.if_type == VPFE_RAW_BAYER) {
826 if (isif_cfg.data_pack == ISIF_PACK_8BIT)
827 len = ((isif_cfg.bayer.win.width));
828 else if (isif_cfg.data_pack == ISIF_PACK_12BIT)
829 len = (((isif_cfg.bayer.win.width * 2) +
830 (isif_cfg.bayer.win.width >> 2)));
831 else
832 len = (((isif_cfg.bayer.win.width * 2)));
833 } else
834 len = (((isif_cfg.ycbcr.win.width * 2)));
835 return ALIGN(len, 32);
836 }
837
838 static int isif_set_frame_format(enum ccdc_frmfmt frm_fmt)
839 {
840 if (isif_cfg.if_type == VPFE_RAW_BAYER)
841 isif_cfg.bayer.frm_fmt = frm_fmt;
842 else
843 isif_cfg.ycbcr.frm_fmt = frm_fmt;
844 return 0;
845 }
846 static enum ccdc_frmfmt isif_get_frame_format(void)
847 {
848 if (isif_cfg.if_type == VPFE_RAW_BAYER)
849 return isif_cfg.bayer.frm_fmt;
850 return isif_cfg.ycbcr.frm_fmt;
851 }
852
853 static int isif_getfid(void)
854 {
855 return (regr(MODESET) >> 15) & 0x1;
856 }
857
858 /* misc operations */
859 static void isif_setfbaddr(unsigned long addr)
860 {
861 regw((addr >> 21) & 0x07ff, CADU);
862 regw((addr >> 5) & 0x0ffff, CADL);
863 }
864
865 static int isif_set_hw_if_params(struct vpfe_hw_if_param *params)
866 {
867 isif_cfg.if_type = params->if_type;
868
869 switch (params->if_type) {
870 case VPFE_BT656:
871 case VPFE_BT656_10BIT:
872 case VPFE_YCBCR_SYNC_8:
873 isif_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;
874 isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
875 break;
876 case VPFE_BT1120:
877 case VPFE_YCBCR_SYNC_16:
878 isif_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_16BIT;
879 isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
880 break;
881 case VPFE_RAW_BAYER:
882 isif_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
883 break;
884 default:
885 dev_dbg(isif_cfg.dev, "Invalid interface type\n");
886 return -EINVAL;
887 }
888
889 return 0;
890 }
891
892 /* This function will configure ISIF for YCbCr parameters. */
893 static int isif_config_ycbcr(void)
894 {
895 struct isif_ycbcr_config *params = &isif_cfg.ycbcr;
896 struct vpss_pg_frame_size frame_size;
897 u32 modeset = 0, ccdcfg = 0;
898 struct vpss_sync_pol sync;
899
900 dev_dbg(isif_cfg.dev, "\nStarting isif_config_ycbcr...");
901
902 /* configure pixel format or input mode */
903 modeset = modeset | (params->pix_fmt << ISIF_INPUT_SHIFT) |
904 (params->frm_fmt << ISIF_FRM_FMT_SHIFT) |
905 (params->fid_pol << ISIF_FID_POL_SHIFT) |
906 (params->hd_pol << ISIF_HD_POL_SHIFT) |
907 (params->vd_pol << ISIF_VD_POL_SHIFT);
908
909 /* pack the data to 8-bit ISIFCFG */
910 switch (isif_cfg.if_type) {
911 case VPFE_BT656:
912 if (params->pix_fmt != CCDC_PIXFMT_YCBCR_8BIT) {
913 dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
914 return -EINVAL;
915 }
916 modeset |= (VPFE_PINPOL_NEGATIVE << ISIF_VD_POL_SHIFT);
917 regw(3, REC656IF);
918 ccdcfg = ccdcfg | ISIF_DATA_PACK8 | ISIF_YCINSWP_YCBCR;
919 break;
920 case VPFE_BT656_10BIT:
921 if (params->pix_fmt != CCDC_PIXFMT_YCBCR_8BIT) {
922 dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
923 return -EINVAL;
924 }
925 /* setup BT.656, embedded sync */
926 regw(3, REC656IF);
927 /* enable 10 bit mode in ccdcfg */
928 ccdcfg = ccdcfg | ISIF_DATA_PACK8 | ISIF_YCINSWP_YCBCR |
929 ISIF_BW656_ENABLE;
930 break;
931 case VPFE_BT1120:
932 if (params->pix_fmt != CCDC_PIXFMT_YCBCR_16BIT) {
933 dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
934 return -EINVAL;
935 }
936 regw(3, REC656IF);
937 break;
938
939 case VPFE_YCBCR_SYNC_8:
940 ccdcfg |= ISIF_DATA_PACK8;
941 ccdcfg |= ISIF_YCINSWP_YCBCR;
942 if (params->pix_fmt != CCDC_PIXFMT_YCBCR_8BIT) {
943 dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
944 return -EINVAL;
945 }
946 break;
947 case VPFE_YCBCR_SYNC_16:
948 if (params->pix_fmt != CCDC_PIXFMT_YCBCR_16BIT) {
949 dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
950 return -EINVAL;
951 }
952 break;
953 default:
954 /* should never come here */
955 dev_dbg(isif_cfg.dev, "Invalid interface type\n");
956 return -EINVAL;
957 }
958
959 regw(modeset, MODESET);
960
961 /* Set up pix order */
962 ccdcfg |= params->pix_order << ISIF_PIX_ORDER_SHIFT;
963
964 regw(ccdcfg, CCDCFG);
965
966 /* configure video window */
967 if ((isif_cfg.if_type == VPFE_BT1120) ||
968 (isif_cfg.if_type == VPFE_YCBCR_SYNC_16))
969 isif_setwin(&params->win, params->frm_fmt, 1);
970 else
971 isif_setwin(&params->win, params->frm_fmt, 2);
972
973 /*
974 * configure the horizontal line offset
975 * this is done by rounding up width to a multiple of 16 pixels
976 * and multiply by two to account for y:cb:cr 4:2:2 data
977 */
978 regw(((((params->win.width * 2) + 31) & 0xffffffe0) >> 5), HSIZE);
979
980 /* configure the memory line offset */
981 if ((params->frm_fmt == CCDC_FRMFMT_INTERLACED) &&
982 (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED))
983 /* two fields are interleaved in memory */
984 regw(0x00000249, SDOFST);
985
986 /* Setup test pattern if enabled */
987 if (isif_cfg.bayer.config_params.test_pat_gen) {
988 sync.ccdpg_hdpol = params->hd_pol;
989 sync.ccdpg_vdpol = params->vd_pol;
990 dm365_vpss_set_sync_pol(sync);
991 dm365_vpss_set_pg_frame_size(frame_size);
992 }
993 return 0;
994 }
995
996 static int isif_configure(void)
997 {
998 if (isif_cfg.if_type == VPFE_RAW_BAYER)
999 return isif_config_raw();
1000 return isif_config_ycbcr();
1001 }
1002
1003 static int isif_close(struct device *device)
1004 {
1005 /* copy defaults to module params */
1006 isif_cfg.bayer.config_params = isif_config_defaults;
1007 return 0;
1008 }
1009
1010 static struct ccdc_hw_device isif_hw_dev = {
1011 .name = "ISIF",
1012 .owner = THIS_MODULE,
1013 .hw_ops = {
1014 .open = isif_open,
1015 .close = isif_close,
1016 .enable = isif_enable,
1017 .enable_out_to_sdram = isif_enable_output_to_sdram,
1018 .set_hw_if_params = isif_set_hw_if_params,
1019 .configure = isif_configure,
1020 .set_buftype = isif_set_buftype,
1021 .get_buftype = isif_get_buftype,
1022 .enum_pix = isif_enum_pix,
1023 .set_pixel_format = isif_set_pixel_format,
1024 .get_pixel_format = isif_get_pixel_format,
1025 .set_frame_format = isif_set_frame_format,
1026 .get_frame_format = isif_get_frame_format,
1027 .set_image_window = isif_set_image_window,
1028 .get_image_window = isif_get_image_window,
1029 .get_line_length = isif_get_line_length,
1030 .setfbaddr = isif_setfbaddr,
1031 .getfid = isif_getfid,
1032 },
1033 };
1034
1035 static int __init isif_probe(struct platform_device *pdev)
1036 {
1037 void (*setup_pinmux)(void);
1038 struct resource *res;
1039 void *__iomem addr;
1040 int status = 0, i;
1041
1042 /*
1043 * first try to register with vpfe. If not correct platform, then we
1044 * don't have to iomap
1045 */
1046 status = vpfe_register_ccdc_device(&isif_hw_dev);
1047 if (status < 0)
1048 return status;
1049
1050 /* Get and enable Master clock */
1051 isif_cfg.mclk = clk_get(&pdev->dev, "master");
1052 if (IS_ERR(isif_cfg.mclk)) {
1053 status = PTR_ERR(isif_cfg.mclk);
1054 goto fail_mclk;
1055 }
1056 if (clk_enable(isif_cfg.mclk)) {
1057 status = -ENODEV;
1058 goto fail_mclk;
1059 }
1060
1061 /* Platform data holds setup_pinmux function ptr */
1062 if (NULL == pdev->dev.platform_data) {
1063 status = -ENODEV;
1064 goto fail_mclk;
1065 }
1066 setup_pinmux = pdev->dev.platform_data;
1067 /*
1068 * setup Mux configuration for ccdc which may be different for
1069 * different SoCs using this CCDC
1070 */
1071 setup_pinmux();
1072
1073 i = 0;
1074 /* Get the ISIF base address, linearization table0 and table1 addr. */
1075 while (i < 3) {
1076 res = platform_get_resource(pdev, IORESOURCE_MEM, i);
1077 if (!res) {
1078 status = -ENODEV;
1079 goto fail_nobase_res;
1080 }
1081 res = request_mem_region(res->start, resource_size(res),
1082 res->name);
1083 if (!res) {
1084 status = -EBUSY;
1085 goto fail_nobase_res;
1086 }
1087 addr = ioremap_nocache(res->start, resource_size(res));
1088 if (!addr) {
1089 status = -ENOMEM;
1090 goto fail_base_iomap;
1091 }
1092 switch (i) {
1093 case 0:
1094 /* ISIF base address */
1095 isif_cfg.base_addr = addr;
1096 break;
1097 case 1:
1098 /* ISIF linear tbl0 address */
1099 isif_cfg.linear_tbl0_addr = addr;
1100 break;
1101 default:
1102 /* ISIF linear tbl0 address */
1103 isif_cfg.linear_tbl1_addr = addr;
1104 break;
1105 }
1106 i++;
1107 }
1108 isif_cfg.dev = &pdev->dev;
1109
1110 printk(KERN_NOTICE "%s is registered with vpfe.\n",
1111 isif_hw_dev.name);
1112 return 0;
1113 fail_base_iomap:
1114 release_mem_region(res->start, resource_size(res));
1115 i--;
1116 fail_nobase_res:
1117 if (isif_cfg.base_addr)
1118 iounmap(isif_cfg.base_addr);
1119 if (isif_cfg.linear_tbl0_addr)
1120 iounmap(isif_cfg.linear_tbl0_addr);
1121
1122 while (i >= 0) {
1123 res = platform_get_resource(pdev, IORESOURCE_MEM, i);
1124 release_mem_region(res->start, resource_size(res));
1125 i--;
1126 }
1127 fail_mclk:
1128 clk_put(isif_cfg.mclk);
1129 vpfe_unregister_ccdc_device(&isif_hw_dev);
1130 return status;
1131 }
1132
1133 static int isif_remove(struct platform_device *pdev)
1134 {
1135 struct resource *res;
1136 int i = 0;
1137
1138 iounmap(isif_cfg.base_addr);
1139 iounmap(isif_cfg.linear_tbl0_addr);
1140 iounmap(isif_cfg.linear_tbl1_addr);
1141 while (i < 3) {
1142 res = platform_get_resource(pdev, IORESOURCE_MEM, i);
1143 if (res)
1144 release_mem_region(res->start, resource_size(res));
1145 i++;
1146 }
1147 vpfe_unregister_ccdc_device(&isif_hw_dev);
1148 return 0;
1149 }
1150
1151 static struct platform_driver isif_driver = {
1152 .driver = {
1153 .name = "isif",
1154 .owner = THIS_MODULE,
1155 },
1156 .remove = __devexit_p(isif_remove),
1157 .probe = isif_probe,
1158 };
1159
1160 module_platform_driver(isif_driver);
1161
1162 MODULE_LICENSE("GPL");