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[people/ms/u-boot.git] / drivers / video / ipu_common.c
CommitLineData
575001e4
SB		 1/*
2 * Porting to u-boot:
3 *
4 * (C) Copyright 2010
5 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
6 *
7 * Linux IPU driver for MX51:
8 *
9 * (C) Copyright 2005-2010 Freescale Semiconductor, Inc.
10 *
1a459660 11 * SPDX-License-Identifier: GPL-2.0+
575001e4
SB		 12 */
13
14/* #define DEBUG */
15#include <common.h>
16#include <linux/types.h>
17#include <linux/err.h>
18#include <asm/io.h>
19#include <asm/errno.h>
20#include <asm/arch/imx-regs.h>
21#include <asm/arch/crm_regs.h>
22#include "ipu.h"
23#include "ipu_regs.h"
24
25extern struct mxc_ccm_reg *mxc_ccm;
26extern u32 *ipu_cpmem_base;
27
28struct ipu_ch_param_word {
29 uint32_t data[5];
30 uint32_t res[3];
31};
32
33struct ipu_ch_param {
34 struct ipu_ch_param_word word[2];
35};
36
37#define ipu_ch_param_addr(ch) (((struct ipu_ch_param *)ipu_cpmem_base) + (ch))
38
39#define _param_word(base, w) \
40 (((struct ipu_ch_param *)(base))->word[(w)].data)
41
42#define ipu_ch_param_set_field(base, w, bit, size, v) { \
43 int i = (bit) / 32; \
44 int off = (bit) % 32; \
45 _param_word(base, w)[i] |= (v) << off; \
46 if (((bit) + (size) - 1) / 32 > i) { \
47 _param_word(base, w)[i + 1] |= (v) >> (off ? (32 - off) : 0); \
48 } \
49}
50
51#define ipu_ch_param_mod_field(base, w, bit, size, v) { \
52 int i = (bit) / 32; \
53 int off = (bit) % 32; \
54 u32 mask = (1UL << size) - 1; \
55 u32 temp = _param_word(base, w)[i]; \
56 temp &= ~(mask << off); \
57 _param_word(base, w)[i] = temp | (v) << off; \
58 if (((bit) + (size) - 1) / 32 > i) { \
59 temp = _param_word(base, w)[i + 1]; \
60 temp &= ~(mask >> (32 - off)); \
61 _param_word(base, w)[i + 1] = \
62 temp | ((v) >> (off ? (32 - off) : 0)); \
63 } \
64}
65
66#define ipu_ch_param_read_field(base, w, bit, size) ({ \
67 u32 temp2; \
68 int i = (bit) / 32; \
69 int off = (bit) % 32; \
70 u32 mask = (1UL << size) - 1; \
71 u32 temp1 = _param_word(base, w)[i]; \
72 temp1 = mask & (temp1 >> off); \
73 if (((bit)+(size) - 1) / 32 > i) { \
74 temp2 = _param_word(base, w)[i + 1]; \
75 temp2 &= mask >> (off ? (32 - off) : 0); \
76 temp1 |= temp2 << (off ? (32 - off) : 0); \
77 } \
78 temp1; \
79})
80
945d069f 81#define IPU_SW_RST_TOUT_USEC (10000)
575001e4
SB		 82
83void clk_enable(struct clk *clk)
84{
85 if (clk) {
86 if (clk->usecount++ == 0) {
87 clk->enable(clk);
88 }
89 }
90}
91
92void clk_disable(struct clk *clk)
93{
94 if (clk) {
95 if (!(--clk->usecount)) {
96 if (clk->disable)
97 clk->disable(clk);
98 }
99 }
100}
101
102int clk_get_usecount(struct clk *clk)
103{
104 if (clk == NULL)
105 return 0;
106
107 return clk->usecount;
108}
109
110u32 clk_get_rate(struct clk *clk)
111{
112 if (!clk)
113 return 0;
114
115 return clk->rate;
116}
117
118struct clk *clk_get_parent(struct clk *clk)
119{
120 if (!clk)
121 return 0;
122
123 return clk->parent;
124}
125
126int clk_set_rate(struct clk *clk, unsigned long rate)
127{
128 if (clk && clk->set_rate)
129 clk->set_rate(clk, rate);
130 return clk->rate;
131}
132
133long clk_round_rate(struct clk *clk, unsigned long rate)
134{
135 if (clk == NULL || !clk->round_rate)
136 return 0;
137
138 return clk->round_rate(clk, rate);
139}
140
141int clk_set_parent(struct clk *clk, struct clk *parent)
142{
143 clk->parent = parent;
144 if (clk->set_parent)
145 return clk->set_parent(clk, parent);
146 return 0;
147}
148
149static int clk_ipu_enable(struct clk *clk)
150{
151 u32 reg;
152
153 reg = __raw_readl(clk->enable_reg);
154 reg |= MXC_CCM_CCGR_CG_MASK << clk->enable_shift;
155 __raw_writel(reg, clk->enable_reg);
156
0bb7e316 157#if defined(CONFIG_MX51) || defined(CONFIG_MX53)
575001e4
SB		 158 /* Handshake with IPU when certain clock rates are changed. */
159 reg = __raw_readl(&mxc_ccm->ccdr);
160 reg &= ~MXC_CCM_CCDR_IPU_HS_MASK;
161 __raw_writel(reg, &mxc_ccm->ccdr);
162
163 /* Handshake with IPU when LPM is entered as its enabled. */
164 reg = __raw_readl(&mxc_ccm->clpcr);
165 reg &= ~MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS;
166 __raw_writel(reg, &mxc_ccm->clpcr);
e4942ad7 167#endif
575001e4
SB		 168 return 0;
169}
170
171static void clk_ipu_disable(struct clk *clk)
172{
173 u32 reg;
174
175 reg = __raw_readl(clk->enable_reg);
176 reg &= ~(MXC_CCM_CCGR_CG_MASK << clk->enable_shift);
177 __raw_writel(reg, clk->enable_reg);
178
0bb7e316 179#if defined(CONFIG_MX51) || defined(CONFIG_MX53)
575001e4
SB		 180 /*
181 * No handshake with IPU whe dividers are changed
182 * as its not enabled.
183 */
184 reg = __raw_readl(&mxc_ccm->ccdr);
185 reg |= MXC_CCM_CCDR_IPU_HS_MASK;
186 __raw_writel(reg, &mxc_ccm->ccdr);
187
188 /* No handshake with IPU when LPM is entered as its not enabled. */
189 reg = __raw_readl(&mxc_ccm->clpcr);
190 reg |= MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS;
191 __raw_writel(reg, &mxc_ccm->clpcr);
e4942ad7 192#endif
575001e4
SB		 193}
194
195
196static struct clk ipu_clk = {
197 .name = "ipu_clk",
9fbdb1aa 198 .rate = CONFIG_IPUV3_CLK,
0bb7e316 199#if defined(CONFIG_MX51) || defined(CONFIG_MX53)
477bca22 200 .enable_reg = (u32 *)(CCM_BASE_ADDR +
575001e4 201 offsetof(struct mxc_ccm_reg, CCGR5)),
1f5e4ee0 202 .enable_shift = MXC_CCM_CCGR5_IPU_OFFSET,
0bb7e316
EN		 203#else
204 .enable_reg = (u32 *)(CCM_BASE_ADDR +
205 offsetof(struct mxc_ccm_reg, CCGR3)),
206 .enable_shift = MXC_CCM_CCGR3_IPU1_IPU_DI0_OFFSET,
207#endif
575001e4
SB		 208 .enable = clk_ipu_enable,
209 .disable = clk_ipu_disable,
210 .usecount = 0,
211};
212
cf65d478
EN		 213static struct clk ldb_clk = {
214 .name = "ldb_clk",
215 .rate = 65000000,
216 .usecount = 0,
217};
218
575001e4
SB		 219/* Globals */
220struct clk *g_ipu_clk;
cf65d478 221struct clk *g_ldb_clk;
575001e4
SB		 222unsigned char g_ipu_clk_enabled;
223struct clk *g_di_clk[2];
224struct clk *g_pixel_clk[2];
225unsigned char g_dc_di_assignment[10];
226uint32_t g_channel_init_mask;
227uint32_t g_channel_enable_mask;
228
229static int ipu_dc_use_count;
230static int ipu_dp_use_count;
231static int ipu_dmfc_use_count;
232static int ipu_di_use_count[2];
233
234u32 *ipu_cpmem_base;
235u32 *ipu_dc_tmpl_reg;
236
237/* Static functions */
238
239static inline void ipu_ch_param_set_high_priority(uint32_t ch)
240{
241 ipu_ch_param_mod_field(ipu_ch_param_addr(ch), 1, 93, 2, 1);
242};
243
244static inline uint32_t channel_2_dma(ipu_channel_t ch, ipu_buffer_t type)
245{
246 return ((uint32_t) ch >> (6 * type)) & 0x3F;
247};
248
249/* Either DP BG or DP FG can be graphic window */
250static inline int ipu_is_dp_graphic_chan(uint32_t dma_chan)
251{
252 return (dma_chan == 23 || dma_chan == 27);
253}
254
255static inline int ipu_is_dmfc_chan(uint32_t dma_chan)
256{
257 return ((dma_chan >= 23) && (dma_chan <= 29));
258}
259
260
261static inline void ipu_ch_param_set_buffer(uint32_t ch, int bufNum,
262 dma_addr_t phyaddr)
263{
264 ipu_ch_param_mod_field(ipu_ch_param_addr(ch), 1, 29 * bufNum, 29,
265 phyaddr / 8);
266};
267
268#define idma_is_valid(ch) (ch != NO_DMA)
269#define idma_mask(ch) (idma_is_valid(ch) ? (1UL << (ch & 0x1F)) : 0)
270#define idma_is_set(reg, dma) (__raw_readl(reg(dma)) & idma_mask(dma))
271
272static void ipu_pixel_clk_recalc(struct clk *clk)
273{
274 u32 div = __raw_readl(DI_BS_CLKGEN0(clk->id));
275 if (div == 0)
276 clk->rate = 0;
277 else
278 clk->rate = (clk->parent->rate * 16) / div;
279}
280
281static unsigned long ipu_pixel_clk_round_rate(struct clk *clk,
282 unsigned long rate)
283{
284 u32 div, div1;
285 u32 tmp;
286 /*
287 * Calculate divider
288 * Fractional part is 4 bits,
289 * so simply multiply by 2^4 to get fractional part.
290 */
291 tmp = (clk->parent->rate * 16);
292 div = tmp / rate;
293
294 if (div < 0x10) /* Min DI disp clock divider is 1 */
295 div = 0x10;
296 if (div & ~0xFEF)
297 div &= 0xFF8;
298 else {
299 div1 = div & 0xFE0;
300 if ((tmp/div1 - tmp/div) < rate / 4)
301 div = div1;
302 else
303 div &= 0xFF8;
304 }
305 return (clk->parent->rate * 16) / div;
306}
307
308static int ipu_pixel_clk_set_rate(struct clk *clk, unsigned long rate)
309{
310 u32 div = (clk->parent->rate * 16) / rate;
311
312 __raw_writel(div, DI_BS_CLKGEN0(clk->id));
313
314 /* Setup pixel clock timing */
315 __raw_writel((div / 16) << 16, DI_BS_CLKGEN1(clk->id));
316
317 clk->rate = (clk->parent->rate * 16) / div;
318 return 0;
319}
320
321static int ipu_pixel_clk_enable(struct clk *clk)
322{
323 u32 disp_gen = __raw_readl(IPU_DISP_GEN);
324 disp_gen |= clk->id ? DI1_COUNTER_RELEASE : DI0_COUNTER_RELEASE;
325 __raw_writel(disp_gen, IPU_DISP_GEN);
326
327 return 0;
328}
329
330static void ipu_pixel_clk_disable(struct clk *clk)
331{
332 u32 disp_gen = __raw_readl(IPU_DISP_GEN);
333 disp_gen &= clk->id ? ~DI1_COUNTER_RELEASE : ~DI0_COUNTER_RELEASE;
334 __raw_writel(disp_gen, IPU_DISP_GEN);
335
336}
337
338static int ipu_pixel_clk_set_parent(struct clk *clk, struct clk *parent)
339{
340 u32 di_gen = __raw_readl(DI_GENERAL(clk->id));
341
342 if (parent == g_ipu_clk)
343 di_gen &= ~DI_GEN_DI_CLK_EXT;
cf65d478 344 else if (!IS_ERR(g_di_clk[clk->id]) && parent == g_ldb_clk)
575001e4
SB		 345 di_gen |= DI_GEN_DI_CLK_EXT;
346 else
347 return -EINVAL;
348
349 __raw_writel(di_gen, DI_GENERAL(clk->id));
350 ipu_pixel_clk_recalc(clk);
351 return 0;
352}
353
354static struct clk pixel_clk[] = {
355 {
356 .name = "pixel_clk",
357 .id = 0,
358 .recalc = ipu_pixel_clk_recalc,
359 .set_rate = ipu_pixel_clk_set_rate,
360 .round_rate = ipu_pixel_clk_round_rate,
361 .set_parent = ipu_pixel_clk_set_parent,
362 .enable = ipu_pixel_clk_enable,
363 .disable = ipu_pixel_clk_disable,
364 .usecount = 0,
365 },
366 {
367 .name = "pixel_clk",
368 .id = 1,
369 .recalc = ipu_pixel_clk_recalc,
370 .set_rate = ipu_pixel_clk_set_rate,
371 .round_rate = ipu_pixel_clk_round_rate,
372 .set_parent = ipu_pixel_clk_set_parent,
373 .enable = ipu_pixel_clk_enable,
374 .disable = ipu_pixel_clk_disable,
375 .usecount = 0,
376 },
377};
378
379/*
380 * This function resets IPU
381 */
c5fe2532 382static void ipu_reset(void)
575001e4
SB		 383{
384 u32 *reg;
385 u32 value;
945d069f 386 int timeout = IPU_SW_RST_TOUT_USEC;
575001e4
SB		 387
388 reg = (u32 *)SRC_BASE_ADDR;
389 value = __raw_readl(reg);
390 value = value | SW_IPU_RST;
391 __raw_writel(value, reg);
945d069f
LY		 392
393 while (__raw_readl(reg) & SW_IPU_RST) {
394 udelay(1);
395 if (!(timeout--)) {
396 printf("ipu software reset timeout\n");
397 break;
398 }
399 };
575001e4
SB		 400}
401
402/*
403 * This function is called by the driver framework to initialize the IPU
404 * hardware.
405 *
406 * @param dev The device structure for the IPU passed in by the
407 * driver framework.
408 *
409 * @return Returns 0 on success or negative error code on error
410 */
411int ipu_probe(void)
412{
413 unsigned long ipu_base;
913db794 414#if defined CONFIG_MX51
575001e4
SB		 415 u32 temp;
416
417 u32 *reg_hsc_mcd = (u32 *)MIPI_HSC_BASE_ADDR;
418 u32 *reg_hsc_mxt_conf = (u32 *)(MIPI_HSC_BASE_ADDR + 0x800);
419
420 __raw_writel(0xF00, reg_hsc_mcd);
421
422 /* CSI mode reserved*/
423 temp = __raw_readl(reg_hsc_mxt_conf);
424 __raw_writel(temp | 0x0FF, reg_hsc_mxt_conf);
425
426 temp = __raw_readl(reg_hsc_mxt_conf);
427 __raw_writel(temp | 0x10000, reg_hsc_mxt_conf);
913db794 428#endif
575001e4
SB		 429
430 ipu_base = IPU_CTRL_BASE_ADDR;
431 ipu_cpmem_base = (u32 *)(ipu_base + IPU_CPMEM_REG_BASE);
432 ipu_dc_tmpl_reg = (u32 *)(ipu_base + IPU_DC_TMPL_REG_BASE);
433
434 g_pixel_clk[0] = &pixel_clk[0];
435 g_pixel_clk[1] = &pixel_clk[1];
436
437 g_ipu_clk = &ipu_clk;
438 debug("ipu_clk = %u\n", clk_get_rate(g_ipu_clk));
cf65d478
EN		 439 g_ldb_clk = &ldb_clk;
440 debug("ldb_clk = %u\n", clk_get_rate(g_ldb_clk));
575001e4
SB		 441 ipu_reset();
442
443 clk_set_parent(g_pixel_clk[0], g_ipu_clk);
444 clk_set_parent(g_pixel_clk[1], g_ipu_clk);
445 clk_enable(g_ipu_clk);
446
447 g_di_clk[0] = NULL;
448 g_di_clk[1] = NULL;
449
450 __raw_writel(0x807FFFFF, IPU_MEM_RST);
451 while (__raw_readl(IPU_MEM_RST) & 0x80000000)
452 ;
453
454 ipu_init_dc_mappings();
455
456 __raw_writel(0, IPU_INT_CTRL(5));
457 __raw_writel(0, IPU_INT_CTRL(6));
458 __raw_writel(0, IPU_INT_CTRL(9));
459 __raw_writel(0, IPU_INT_CTRL(10));
460
461 /* DMFC Init */
462 ipu_dmfc_init(DMFC_NORMAL, 1);
463
464 /* Set sync refresh channels as high priority */
465 __raw_writel(0x18800000L, IDMAC_CHA_PRI(0));
466
467 /* Set MCU_T to divide MCU access window into 2 */
468 __raw_writel(0x00400000L | (IPU_MCU_T_DEFAULT << 18), IPU_DISP_GEN);
469
470 clk_disable(g_ipu_clk);
471
472 return 0;
473}
474
475void ipu_dump_registers(void)
476{
477 debug("IPU_CONF = \t0x%08X\n", __raw_readl(IPU_CONF));
478 debug("IDMAC_CONF = \t0x%08X\n", __raw_readl(IDMAC_CONF));
479 debug("IDMAC_CHA_EN1 = \t0x%08X\n",
480 __raw_readl(IDMAC_CHA_EN(0)));
481 debug("IDMAC_CHA_EN2 = \t0x%08X\n",
482 __raw_readl(IDMAC_CHA_EN(32)));
483 debug("IDMAC_CHA_PRI1 = \t0x%08X\n",
484 __raw_readl(IDMAC_CHA_PRI(0)));
485 debug("IDMAC_CHA_PRI2 = \t0x%08X\n",
486 __raw_readl(IDMAC_CHA_PRI(32)));
487 debug("IPU_CHA_DB_MODE_SEL0 = \t0x%08X\n",
488 __raw_readl(IPU_CHA_DB_MODE_SEL(0)));
489 debug("IPU_CHA_DB_MODE_SEL1 = \t0x%08X\n",
490 __raw_readl(IPU_CHA_DB_MODE_SEL(32)));
491 debug("DMFC_WR_CHAN = \t0x%08X\n",
492 __raw_readl(DMFC_WR_CHAN));
493 debug("DMFC_WR_CHAN_DEF = \t0x%08X\n",
494 __raw_readl(DMFC_WR_CHAN_DEF));
495 debug("DMFC_DP_CHAN = \t0x%08X\n",
496 __raw_readl(DMFC_DP_CHAN));
497 debug("DMFC_DP_CHAN_DEF = \t0x%08X\n",
498 __raw_readl(DMFC_DP_CHAN_DEF));
499 debug("DMFC_IC_CTRL = \t0x%08X\n",
500 __raw_readl(DMFC_IC_CTRL));
501 debug("IPU_FS_PROC_FLOW1 = \t0x%08X\n",
502 __raw_readl(IPU_FS_PROC_FLOW1));
503 debug("IPU_FS_PROC_FLOW2 = \t0x%08X\n",
504 __raw_readl(IPU_FS_PROC_FLOW2));
505 debug("IPU_FS_PROC_FLOW3 = \t0x%08X\n",
506 __raw_readl(IPU_FS_PROC_FLOW3));
507 debug("IPU_FS_DISP_FLOW1 = \t0x%08X\n",
508 __raw_readl(IPU_FS_DISP_FLOW1));
509}
510
511/*
512 * This function is called to initialize a logical IPU channel.
513 *
514 * @param channel Input parameter for the logical channel ID to init.
515 *
516 * @param params Input parameter containing union of channel
517 * initialization parameters.
518 *
519 * @return Returns 0 on success or negative error code on fail
520 */
521int32_t ipu_init_channel(ipu_channel_t channel, ipu_channel_params_t *params)
522{
523 int ret = 0;
524 uint32_t ipu_conf;
525
526 debug("init channel = %d\n", IPU_CHAN_ID(channel));
527
528 if (g_ipu_clk_enabled == 0) {
529 g_ipu_clk_enabled = 1;
530 clk_enable(g_ipu_clk);
531 }
532
533
534 if (g_channel_init_mask & (1L << IPU_CHAN_ID(channel))) {
535 printf("Warning: channel already initialized %d\n",
536 IPU_CHAN_ID(channel));
537 }
538
539 ipu_conf = __raw_readl(IPU_CONF);
540
541 switch (channel) {
542 case MEM_DC_SYNC:
543 if (params->mem_dc_sync.di > 1) {
544 ret = -EINVAL;
545 goto err;
546 }
547
548 g_dc_di_assignment[1] = params->mem_dc_sync.di;
549 ipu_dc_init(1, params->mem_dc_sync.di,
550 params->mem_dc_sync.interlaced);
551 ipu_di_use_count[params->mem_dc_sync.di]++;
552 ipu_dc_use_count++;
553 ipu_dmfc_use_count++;
554 break;
555 case MEM_BG_SYNC:
556 if (params->mem_dp_bg_sync.di > 1) {
557 ret = -EINVAL;
558 goto err;
559 }
560
561 g_dc_di_assignment[5] = params->mem_dp_bg_sync.di;
562 ipu_dp_init(channel, params->mem_dp_bg_sync.in_pixel_fmt,
563 params->mem_dp_bg_sync.out_pixel_fmt);
564 ipu_dc_init(5, params->mem_dp_bg_sync.di,
565 params->mem_dp_bg_sync.interlaced);
566 ipu_di_use_count[params->mem_dp_bg_sync.di]++;
567 ipu_dc_use_count++;
568 ipu_dp_use_count++;
569 ipu_dmfc_use_count++;
570 break;
571 case MEM_FG_SYNC:
572 ipu_dp_init(channel, params->mem_dp_fg_sync.in_pixel_fmt,
573 params->mem_dp_fg_sync.out_pixel_fmt);
574
575 ipu_dc_use_count++;
576 ipu_dp_use_count++;
577 ipu_dmfc_use_count++;
578 break;
579 default:
580 printf("Missing channel initialization\n");
581 break;
582 }
583
584 /* Enable IPU sub module */
585 g_channel_init_mask |= 1L << IPU_CHAN_ID(channel);
586 if (ipu_dc_use_count == 1)
587 ipu_conf |= IPU_CONF_DC_EN;
588 if (ipu_dp_use_count == 1)
589 ipu_conf |= IPU_CONF_DP_EN;
590 if (ipu_dmfc_use_count == 1)
591 ipu_conf |= IPU_CONF_DMFC_EN;
592 if (ipu_di_use_count[0] == 1) {
593 ipu_conf |= IPU_CONF_DI0_EN;
594 }
595 if (ipu_di_use_count[1] == 1) {
596 ipu_conf |= IPU_CONF_DI1_EN;
597 }
598
599 __raw_writel(ipu_conf, IPU_CONF);
600
601err:
602 return ret;
603}
604
605/*
606 * This function is called to uninitialize a logical IPU channel.
607 *
608 * @param channel Input parameter for the logical channel ID to uninit.
609 */
610void ipu_uninit_channel(ipu_channel_t channel)
611{
612 uint32_t reg;
613 uint32_t in_dma, out_dma = 0;
614 uint32_t ipu_conf;
615
616 if ((g_channel_init_mask & (1L << IPU_CHAN_ID(channel))) == 0) {
617 debug("Channel already uninitialized %d\n",
618 IPU_CHAN_ID(channel));
619 return;
620 }
621
622 /*
623 * Make sure channel is disabled
624 * Get input and output dma channels
625 */
626 in_dma = channel_2_dma(channel, IPU_OUTPUT_BUFFER);
627 out_dma = channel_2_dma(channel, IPU_VIDEO_IN_BUFFER);
628
629 if (idma_is_set(IDMAC_CHA_EN, in_dma) ||
630 idma_is_set(IDMAC_CHA_EN, out_dma)) {
631 printf(
632 "Channel %d is not disabled, disable first\n",
633 IPU_CHAN_ID(channel));
634 return;
635 }
636
637 ipu_conf = __raw_readl(IPU_CONF);
638
639 /* Reset the double buffer */
640 reg = __raw_readl(IPU_CHA_DB_MODE_SEL(in_dma));
641 __raw_writel(reg & ~idma_mask(in_dma), IPU_CHA_DB_MODE_SEL(in_dma));
642 reg = __raw_readl(IPU_CHA_DB_MODE_SEL(out_dma));
643 __raw_writel(reg & ~idma_mask(out_dma), IPU_CHA_DB_MODE_SEL(out_dma));
644
645 switch (channel) {
646 case MEM_DC_SYNC:
647 ipu_dc_uninit(1);
648 ipu_di_use_count[g_dc_di_assignment[1]]--;
649 ipu_dc_use_count--;
650 ipu_dmfc_use_count--;
651 break;
652 case MEM_BG_SYNC:
653 ipu_dp_uninit(channel);
654 ipu_dc_uninit(5);
655 ipu_di_use_count[g_dc_di_assignment[5]]--;
656 ipu_dc_use_count--;
657 ipu_dp_use_count--;
658 ipu_dmfc_use_count--;
659 break;
660 case MEM_FG_SYNC:
661 ipu_dp_uninit(channel);
662 ipu_dc_use_count--;
663 ipu_dp_use_count--;
664 ipu_dmfc_use_count--;
665 break;
666 default:
667 break;
668 }
669
670 g_channel_init_mask &= ~(1L << IPU_CHAN_ID(channel));
671
672 if (ipu_dc_use_count == 0)
673 ipu_conf &= ~IPU_CONF_DC_EN;
674 if (ipu_dp_use_count == 0)
675 ipu_conf &= ~IPU_CONF_DP_EN;
676 if (ipu_dmfc_use_count == 0)
677 ipu_conf &= ~IPU_CONF_DMFC_EN;
678 if (ipu_di_use_count[0] == 0) {
679 ipu_conf &= ~IPU_CONF_DI0_EN;
680 }
681 if (ipu_di_use_count[1] == 0) {
682 ipu_conf &= ~IPU_CONF_DI1_EN;
683 }
684
685 __raw_writel(ipu_conf, IPU_CONF);
686
687 if (ipu_conf == 0) {
688 clk_disable(g_ipu_clk);
689 g_ipu_clk_enabled = 0;
690 }
691
692}
693
694static inline void ipu_ch_param_dump(int ch)
695{
696#ifdef DEBUG
697 struct ipu_ch_param *p = ipu_ch_param_addr(ch);
698 debug("ch %d word 0 - %08X %08X %08X %08X %08X\n", ch,
699 p->word[0].data[0], p->word[0].data[1], p->word[0].data[2],
700 p->word[0].data[3], p->word[0].data[4]);
701 debug("ch %d word 1 - %08X %08X %08X %08X %08X\n", ch,
702 p->word[1].data[0], p->word[1].data[1], p->word[1].data[2],
703 p->word[1].data[3], p->word[1].data[4]);
704 debug("PFS 0x%x, ",
705 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 85, 4));
706 debug("BPP 0x%x, ",
707 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 0, 107, 3));
708 debug("NPB 0x%x\n",
709 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 78, 7));
710
711 debug("FW %d, ",
712 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 0, 125, 13));
713 debug("FH %d, ",
714 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 0, 138, 12));
715 debug("Stride %d\n",
716 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 102, 14));
717
718 debug("Width0 %d+1, ",
719 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 116, 3));
720 debug("Width1 %d+1, ",
721 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 119, 3));
722 debug("Width2 %d+1, ",
723 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 122, 3));
724 debug("Width3 %d+1, ",
725 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 125, 3));
726 debug("Offset0 %d, ",
727 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 128, 5));
728 debug("Offset1 %d, ",
729 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 133, 5));
730 debug("Offset2 %d, ",
731 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 138, 5));
732 debug("Offset3 %d\n",
733 ipu_ch_param_read_field(ipu_ch_param_addr(ch), 1, 143, 5));
734#endif
735}
736
737static inline void ipu_ch_params_set_packing(struct ipu_ch_param *p,
738 int red_width, int red_offset,
739 int green_width, int green_offset,
740 int blue_width, int blue_offset,
741 int alpha_width, int alpha_offset)
742{
743 /* Setup red width and offset */
744 ipu_ch_param_set_field(p, 1, 116, 3, red_width - 1);
745 ipu_ch_param_set_field(p, 1, 128, 5, red_offset);
746 /* Setup green width and offset */
747 ipu_ch_param_set_field(p, 1, 119, 3, green_width - 1);
748 ipu_ch_param_set_field(p, 1, 133, 5, green_offset);
749 /* Setup blue width and offset */
750 ipu_ch_param_set_field(p, 1, 122, 3, blue_width - 1);
751 ipu_ch_param_set_field(p, 1, 138, 5, blue_offset);
752 /* Setup alpha width and offset */
753 ipu_ch_param_set_field(p, 1, 125, 3, alpha_width - 1);
754 ipu_ch_param_set_field(p, 1, 143, 5, alpha_offset);
755}
756
757static void ipu_ch_param_init(int ch,
758 uint32_t pixel_fmt, uint32_t width,
759 uint32_t height, uint32_t stride,
760 uint32_t u, uint32_t v,
761 uint32_t uv_stride, dma_addr_t addr0,
762 dma_addr_t addr1)
763{
764 uint32_t u_offset = 0;
765 uint32_t v_offset = 0;
766 struct ipu_ch_param params;
767
768 memset(&params, 0, sizeof(params));
769
770 ipu_ch_param_set_field(&params, 0, 125, 13, width - 1);
771
772 if ((ch == 8) || (ch == 9) || (ch == 10)) {
773 ipu_ch_param_set_field(&params, 0, 138, 12, (height / 2) - 1);
774 ipu_ch_param_set_field(&params, 1, 102, 14, (stride * 2) - 1);
775 } else {
776 ipu_ch_param_set_field(&params, 0, 138, 12, height - 1);
777 ipu_ch_param_set_field(&params, 1, 102, 14, stride - 1);
778 }
779
780 ipu_ch_param_set_field(&params, 1, 0, 29, addr0 >> 3);
781 ipu_ch_param_set_field(&params, 1, 29, 29, addr1 >> 3);
782
783 switch (pixel_fmt) {
784 case IPU_PIX_FMT_GENERIC:
785 /*Represents 8-bit Generic data */
786 ipu_ch_param_set_field(&params, 0, 107, 3, 5); /* bits/pixel */
787 ipu_ch_param_set_field(&params, 1, 85, 4, 6); /* pix format */
788 ipu_ch_param_set_field(&params, 1, 78, 7, 63); /* burst size */
789
790 break;
791 case IPU_PIX_FMT_GENERIC_32:
792 /*Represents 32-bit Generic data */
793 break;
794 case IPU_PIX_FMT_RGB565:
795 ipu_ch_param_set_field(&params, 0, 107, 3, 3); /* bits/pixel */
796 ipu_ch_param_set_field(&params, 1, 85, 4, 7); /* pix format */
797 ipu_ch_param_set_field(&params, 1, 78, 7, 15); /* burst size */
798
799 ipu_ch_params_set_packing(&params, 5, 0, 6, 5, 5, 11, 8, 16);
800 break;
801 case IPU_PIX_FMT_BGR24:
802 ipu_ch_param_set_field(&params, 0, 107, 3, 1); /* bits/pixel */
803 ipu_ch_param_set_field(&params, 1, 85, 4, 7); /* pix format */
804 ipu_ch_param_set_field(&params, 1, 78, 7, 19); /* burst size */
805
806 ipu_ch_params_set_packing(&params, 8, 0, 8, 8, 8, 16, 8, 24);
807 break;
808 case IPU_PIX_FMT_RGB24:
809 case IPU_PIX_FMT_YUV444:
810 ipu_ch_param_set_field(&params, 0, 107, 3, 1); /* bits/pixel */
811 ipu_ch_param_set_field(&params, 1, 85, 4, 7); /* pix format */
812 ipu_ch_param_set_field(&params, 1, 78, 7, 19); /* burst size */
813
814 ipu_ch_params_set_packing(&params, 8, 16, 8, 8, 8, 0, 8, 24);
815 break;
816 case IPU_PIX_FMT_BGRA32:
817 case IPU_PIX_FMT_BGR32:
818 ipu_ch_param_set_field(&params, 0, 107, 3, 0); /* bits/pixel */
819 ipu_ch_param_set_field(&params, 1, 85, 4, 7); /* pix format */
820 ipu_ch_param_set_field(&params, 1, 78, 7, 15); /* burst size */
821
822 ipu_ch_params_set_packing(&params, 8, 8, 8, 16, 8, 24, 8, 0);
823 break;
824 case IPU_PIX_FMT_RGBA32:
825 case IPU_PIX_FMT_RGB32:
826 ipu_ch_param_set_field(&params, 0, 107, 3, 0); /* bits/pixel */
827 ipu_ch_param_set_field(&params, 1, 85, 4, 7); /* pix format */
828 ipu_ch_param_set_field(&params, 1, 78, 7, 15); /* burst size */
829
830 ipu_ch_params_set_packing(&params, 8, 24, 8, 16, 8, 8, 8, 0);
831 break;
832 case IPU_PIX_FMT_ABGR32:
833 ipu_ch_param_set_field(&params, 0, 107, 3, 0); /* bits/pixel */
834 ipu_ch_param_set_field(&params, 1, 85, 4, 7); /* pix format */
835
836 ipu_ch_params_set_packing(&params, 8, 0, 8, 8, 8, 16, 8, 24);
837 break;
838 case IPU_PIX_FMT_UYVY:
839 ipu_ch_param_set_field(&params, 0, 107, 3, 3); /* bits/pixel */
840 ipu_ch_param_set_field(&params, 1, 85, 4, 0xA); /* pix format */
841 ipu_ch_param_set_field(&params, 1, 78, 7, 15); /* burst size */
842 break;
843 case IPU_PIX_FMT_YUYV:
844 ipu_ch_param_set_field(&params, 0, 107, 3, 3); /* bits/pixel */
845 ipu_ch_param_set_field(&params, 1, 85, 4, 0x8); /* pix format */
846 ipu_ch_param_set_field(&params, 1, 78, 7, 31); /* burst size */
847 break;
848 case IPU_PIX_FMT_YUV420P2:
849 case IPU_PIX_FMT_YUV420P:
850 ipu_ch_param_set_field(&params, 1, 85, 4, 2); /* pix format */
851
852 if (uv_stride < stride / 2)
853 uv_stride = stride / 2;
854
855 u_offset = stride * height;
856 v_offset = u_offset + (uv_stride * height / 2);
857 /* burst size */
858 if ((ch == 8) || (ch == 9) || (ch == 10)) {
859 ipu_ch_param_set_field(&params, 1, 78, 7, 15);
860 uv_stride = uv_stride*2;
861 } else {
862 ipu_ch_param_set_field(&params, 1, 78, 7, 31);
863 }
864 break;
865 case IPU_PIX_FMT_YVU422P:
866 /* BPP & pixel format */
867 ipu_ch_param_set_field(&params, 1, 85, 4, 1); /* pix format */
868 ipu_ch_param_set_field(&params, 1, 78, 7, 31); /* burst size */
869
870 if (uv_stride < stride / 2)
871 uv_stride = stride / 2;
872
873 v_offset = (v == 0) ? stride * height : v;
874 u_offset = (u == 0) ? v_offset + v_offset / 2 : u;
875 break;
876 case IPU_PIX_FMT_YUV422P:
877 /* BPP & pixel format */
878 ipu_ch_param_set_field(&params, 1, 85, 4, 1); /* pix format */
879 ipu_ch_param_set_field(&params, 1, 78, 7, 31); /* burst size */
880
881 if (uv_stride < stride / 2)
882 uv_stride = stride / 2;
883
884 u_offset = (u == 0) ? stride * height : u;
885 v_offset = (v == 0) ? u_offset + u_offset / 2 : v;
886 break;
887 case IPU_PIX_FMT_NV12:
888 /* BPP & pixel format */
889 ipu_ch_param_set_field(&params, 1, 85, 4, 4); /* pix format */
890 ipu_ch_param_set_field(&params, 1, 78, 7, 31); /* burst size */
891 uv_stride = stride;
892 u_offset = (u == 0) ? stride * height : u;
893 break;
894 default:
895 puts("mxc ipu: unimplemented pixel format\n");
896 break;
897 }
898
899
900 if (uv_stride)
901 ipu_ch_param_set_field(&params, 1, 128, 14, uv_stride - 1);
902
903 /* Get the uv offset from user when need cropping */
904 if (u || v) {
905 u_offset = u;
906 v_offset = v;
907 }
908
909 /* UBO and VBO are 22-bit */
910 if (u_offset/8 > 0x3fffff)
911 puts("The value of U offset exceeds IPU limitation\n");
912 if (v_offset/8 > 0x3fffff)
913 puts("The value of V offset exceeds IPU limitation\n");
914
915 ipu_ch_param_set_field(&params, 0, 46, 22, u_offset / 8);
916 ipu_ch_param_set_field(&params, 0, 68, 22, v_offset / 8);
917
918 debug("initializing idma ch %d @ %p\n", ch, ipu_ch_param_addr(ch));
919 memcpy(ipu_ch_param_addr(ch), &params, sizeof(params));
920};
921
922/*
923 * This function is called to initialize a buffer for logical IPU channel.
924 *
925 * @param channel Input parameter for the logical channel ID.
926 *
927 * @param type Input parameter which buffer to initialize.
928 *
929 * @param pixel_fmt Input parameter for pixel format of buffer.
930 * Pixel format is a FOURCC ASCII code.
931 *
932 * @param width Input parameter for width of buffer in pixels.
933 *
934 * @param height Input parameter for height of buffer in pixels.
935 *
936 * @param stride Input parameter for stride length of buffer
937 * in pixels.
938 *
939 * @param phyaddr_0 Input parameter buffer 0 physical address.
940 *
941 * @param phyaddr_1 Input parameter buffer 1 physical address.
942 * Setting this to a value other than NULL enables
943 * double buffering mode.
944 *
945 * @param u private u offset for additional cropping,
946 * zero if not used.
947 *
948 * @param v private v offset for additional cropping,
949 * zero if not used.
950 *
951 * @return Returns 0 on success or negative error code on fail
952 */
953int32_t ipu_init_channel_buffer(ipu_channel_t channel, ipu_buffer_t type,
954 uint32_t pixel_fmt,
955 uint16_t width, uint16_t height,
956 uint32_t stride,
957 dma_addr_t phyaddr_0, dma_addr_t phyaddr_1,
958 uint32_t u, uint32_t v)
959{
960 uint32_t reg;
961 uint32_t dma_chan;
962
963 dma_chan = channel_2_dma(channel, type);
964 if (!idma_is_valid(dma_chan))
965 return -EINVAL;
966
967 if (stride < width * bytes_per_pixel(pixel_fmt))
968 stride = width * bytes_per_pixel(pixel_fmt);
969
970 if (stride % 4) {
971 printf(
972 "Stride not 32-bit aligned, stride = %d\n", stride);
973 return -EINVAL;
974 }
975 /* Build parameter memory data for DMA channel */
976 ipu_ch_param_init(dma_chan, pixel_fmt, width, height, stride, u, v, 0,
977 phyaddr_0, phyaddr_1);
978
979 if (ipu_is_dmfc_chan(dma_chan)) {
980 ipu_dmfc_set_wait4eot(dma_chan, width);
981 }
982
983 if (idma_is_set(IDMAC_CHA_PRI, dma_chan))
984 ipu_ch_param_set_high_priority(dma_chan);
985
986 ipu_ch_param_dump(dma_chan);
987
988 reg = __raw_readl(IPU_CHA_DB_MODE_SEL(dma_chan));
989 if (phyaddr_1)
990 reg |= idma_mask(dma_chan);
991 else
992 reg &= ~idma_mask(dma_chan);
993 __raw_writel(reg, IPU_CHA_DB_MODE_SEL(dma_chan));
994
995 /* Reset to buffer 0 */
996 __raw_writel(idma_mask(dma_chan), IPU_CHA_CUR_BUF(dma_chan));
997
998 return 0;
999}
1000
1001/*
1002 * This function enables a logical channel.
1003 *
1004 * @param channel Input parameter for the logical channel ID.
1005 *
1006 * @return This function returns 0 on success or negative error code on
1007 * fail.
1008 */
1009int32_t ipu_enable_channel(ipu_channel_t channel)
1010{
1011 uint32_t reg;
1012 uint32_t in_dma;
1013 uint32_t out_dma;
1014
1015 if (g_channel_enable_mask & (1L << IPU_CHAN_ID(channel))) {
1016 printf("Warning: channel already enabled %d\n",
1017 IPU_CHAN_ID(channel));
1018 }
1019
1020 /* Get input and output dma channels */
1021 out_dma = channel_2_dma(channel, IPU_OUTPUT_BUFFER);
1022 in_dma = channel_2_dma(channel, IPU_VIDEO_IN_BUFFER);
1023
1024 if (idma_is_valid(in_dma)) {
1025 reg = __raw_readl(IDMAC_CHA_EN(in_dma));
1026 __raw_writel(reg | idma_mask(in_dma), IDMAC_CHA_EN(in_dma));
1027 }
1028 if (idma_is_valid(out_dma)) {
1029 reg = __raw_readl(IDMAC_CHA_EN(out_dma));
1030 __raw_writel(reg | idma_mask(out_dma), IDMAC_CHA_EN(out_dma));
1031 }
1032
1033 if ((channel == MEM_DC_SYNC) || (channel == MEM_BG_SYNC) ||
1034 (channel == MEM_FG_SYNC))
1035 ipu_dp_dc_enable(channel);
1036
1037 g_channel_enable_mask |= 1L << IPU_CHAN_ID(channel);
1038
1039 return 0;
1040}
1041
1042/*
1043 * This function clear buffer ready for a logical channel.
1044 *
1045 * @param channel Input parameter for the logical channel ID.
1046 *
1047 * @param type Input parameter which buffer to clear.
1048 *
1049 * @param bufNum Input parameter for which buffer number clear
1050 * ready state.
1051 *
1052 */
1053void ipu_clear_buffer_ready(ipu_channel_t channel, ipu_buffer_t type,
1054 uint32_t bufNum)
1055{
1056 uint32_t dma_ch = channel_2_dma(channel, type);
1057
1058 if (!idma_is_valid(dma_ch))
1059 return;
1060
1061 __raw_writel(0xF0000000, IPU_GPR); /* write one to clear */
1062 if (bufNum == 0) {
1063 if (idma_is_set(IPU_CHA_BUF0_RDY, dma_ch)) {
1064 __raw_writel(idma_mask(dma_ch),
1065 IPU_CHA_BUF0_RDY(dma_ch));
1066 }
1067 } else {
1068 if (idma_is_set(IPU_CHA_BUF1_RDY, dma_ch)) {
1069 __raw_writel(idma_mask(dma_ch),
1070 IPU_CHA_BUF1_RDY(dma_ch));
1071 }
1072 }
1073 __raw_writel(0x0, IPU_GPR); /* write one to set */
1074}
1075
1076/*
1077 * This function disables a logical channel.
1078 *
1079 * @param channel Input parameter for the logical channel ID.
1080 *
1081 * @param wait_for_stop Flag to set whether to wait for channel end
1082 * of frame or return immediately.
1083 *
1084 * @return This function returns 0 on success or negative error code on
1085 * fail.
1086 */
1087int32_t ipu_disable_channel(ipu_channel_t channel)
1088{
1089 uint32_t reg;
1090 uint32_t in_dma;
1091 uint32_t out_dma;
1092
1093 if ((g_channel_enable_mask & (1L << IPU_CHAN_ID(channel))) == 0) {
1094 debug("Channel already disabled %d\n",
1095 IPU_CHAN_ID(channel));
1096 return 0;
1097 }
1098
1099 /* Get input and output dma channels */
1100 out_dma = channel_2_dma(channel, IPU_OUTPUT_BUFFER);
1101 in_dma = channel_2_dma(channel, IPU_VIDEO_IN_BUFFER);
1102
1103 if ((idma_is_valid(in_dma) &&
1104 !idma_is_set(IDMAC_CHA_EN, in_dma))
1105 && (idma_is_valid(out_dma) &&
1106 !idma_is_set(IDMAC_CHA_EN, out_dma)))
1107 return -EINVAL;
1108
1109 if ((channel == MEM_BG_SYNC) || (channel == MEM_FG_SYNC) ||
1110 (channel == MEM_DC_SYNC)) {
1111 ipu_dp_dc_disable(channel, 0);
1112 }
1113
1114 /* Disable DMA channel(s) */
1115 if (idma_is_valid(in_dma)) {
1116 reg = __raw_readl(IDMAC_CHA_EN(in_dma));
1117 __raw_writel(reg & ~idma_mask(in_dma), IDMAC_CHA_EN(in_dma));
1118 __raw_writel(idma_mask(in_dma), IPU_CHA_CUR_BUF(in_dma));
1119 }
1120 if (idma_is_valid(out_dma)) {
1121 reg = __raw_readl(IDMAC_CHA_EN(out_dma));
1122 __raw_writel(reg & ~idma_mask(out_dma), IDMAC_CHA_EN(out_dma));
1123 __raw_writel(idma_mask(out_dma), IPU_CHA_CUR_BUF(out_dma));
1124 }
1125
1126 g_channel_enable_mask &= ~(1L << IPU_CHAN_ID(channel));
1127
1128 /* Set channel buffers NOT to be ready */
1129 if (idma_is_valid(in_dma)) {
1130 ipu_clear_buffer_ready(channel, IPU_VIDEO_IN_BUFFER, 0);
1131 ipu_clear_buffer_ready(channel, IPU_VIDEO_IN_BUFFER, 1);
1132 }
1133 if (idma_is_valid(out_dma)) {
1134 ipu_clear_buffer_ready(channel, IPU_OUTPUT_BUFFER, 0);
1135 ipu_clear_buffer_ready(channel, IPU_OUTPUT_BUFFER, 1);
1136 }
1137
1138 return 0;
1139}
1140
1141uint32_t bytes_per_pixel(uint32_t fmt)
1142{
1143 switch (fmt) {
1144 case IPU_PIX_FMT_GENERIC: /*generic data */
1145 case IPU_PIX_FMT_RGB332:
1146 case IPU_PIX_FMT_YUV420P:
1147 case IPU_PIX_FMT_YUV422P:
1148 return 1;
1149 break;
1150 case IPU_PIX_FMT_RGB565:
1151 case IPU_PIX_FMT_YUYV:
1152 case IPU_PIX_FMT_UYVY:
1153 return 2;
1154 break;
1155 case IPU_PIX_FMT_BGR24:
1156 case IPU_PIX_FMT_RGB24:
1157 return 3;
1158 break;
1159 case IPU_PIX_FMT_GENERIC_32: /*generic data */
1160 case IPU_PIX_FMT_BGR32:
1161 case IPU_PIX_FMT_BGRA32:
1162 case IPU_PIX_FMT_RGB32:
1163 case IPU_PIX_FMT_RGBA32:
1164 case IPU_PIX_FMT_ABGR32:
1165 return 4;
1166 break;
1167 default:
1168 return 1;
1169 break;
1170 }
1171 return 0;
1172}
1173
1174ipu_color_space_t format_to_colorspace(uint32_t fmt)
1175{
1176 switch (fmt) {
1177 case IPU_PIX_FMT_RGB666:
1178 case IPU_PIX_FMT_RGB565:
1179 case IPU_PIX_FMT_BGR24:
1180 case IPU_PIX_FMT_RGB24:
1181 case IPU_PIX_FMT_BGR32:
1182 case IPU_PIX_FMT_BGRA32:
1183 case IPU_PIX_FMT_RGB32:
1184 case IPU_PIX_FMT_RGBA32:
1185 case IPU_PIX_FMT_ABGR32:
1186 case IPU_PIX_FMT_LVDS666:
1187 case IPU_PIX_FMT_LVDS888:
1188 return RGB;
1189 break;
1190
1191 default:
1192 return YCbCr;
1193 break;
1194 }
1195 return RGB;
1196}
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