3 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 #include <linux/export.h>
16 #include <linux/module.h>
17 #include <linux/types.h>
18 #include <linux/errno.h>
20 #include <linux/err.h>
21 #include <linux/platform_device.h>
23 #include <video/imx-ipu-v3.h>
30 struct clk *clk_di; /* display input clock */
31 struct clk *clk_ipu; /* IPU bus clock */
32 struct clk *clk_di_pixel; /* resulting pixel clock */
37 static DEFINE_MUTEX(di_mutex);
39 struct di_sync_config {
46 int cnt_polarity_gen_en;
47 int cnt_polarity_clr_src;
48 int cnt_polarity_trigger_src;
70 DI_SYNC_INT_HSYNC = 2,
75 DI_SYNC_CNT1 = 2, /* counter >= 2 only */
76 DI_SYNC_CNT4 = 5, /* counter >= 5 only */
77 DI_SYNC_CNT5 = 6, /* counter >= 6 only */
82 #define DI_GENERAL 0x0000
83 #define DI_BS_CLKGEN0 0x0004
84 #define DI_BS_CLKGEN1 0x0008
85 #define DI_SW_GEN0(gen) (0x000c + 4 * ((gen) - 1))
86 #define DI_SW_GEN1(gen) (0x0030 + 4 * ((gen) - 1))
87 #define DI_STP_REP(gen) (0x0148 + 4 * (((gen) - 1)/2))
88 #define DI_SYNC_AS_GEN 0x0054
89 #define DI_DW_GEN(gen) (0x0058 + 4 * (gen))
90 #define DI_DW_SET(gen, set) (0x0088 + 4 * ((gen) + 0xc * (set)))
91 #define DI_SER_CONF 0x015c
96 #define DI_SCR_CONF 0x0170
97 #define DI_STAT 0x0174
99 #define DI_SW_GEN0_RUN_COUNT(x) ((x) << 19)
100 #define DI_SW_GEN0_RUN_SRC(x) ((x) << 16)
101 #define DI_SW_GEN0_OFFSET_COUNT(x) ((x) << 3)
102 #define DI_SW_GEN0_OFFSET_SRC(x) ((x) << 0)
104 #define DI_SW_GEN1_CNT_POL_GEN_EN(x) ((x) << 29)
105 #define DI_SW_GEN1_CNT_CLR_SRC(x) ((x) << 25)
106 #define DI_SW_GEN1_CNT_POL_TRIGGER_SRC(x) ((x) << 12)
107 #define DI_SW_GEN1_CNT_POL_CLR_SRC(x) ((x) << 9)
108 #define DI_SW_GEN1_CNT_DOWN(x) ((x) << 16)
109 #define DI_SW_GEN1_CNT_UP(x) (x)
110 #define DI_SW_GEN1_AUTO_RELOAD (0x10000000)
112 #define DI_DW_GEN_ACCESS_SIZE_OFFSET 24
113 #define DI_DW_GEN_COMPONENT_SIZE_OFFSET 16
115 #define DI_GEN_POLARITY_1 (1 << 0)
116 #define DI_GEN_POLARITY_2 (1 << 1)
117 #define DI_GEN_POLARITY_3 (1 << 2)
118 #define DI_GEN_POLARITY_4 (1 << 3)
119 #define DI_GEN_POLARITY_5 (1 << 4)
120 #define DI_GEN_POLARITY_6 (1 << 5)
121 #define DI_GEN_POLARITY_7 (1 << 6)
122 #define DI_GEN_POLARITY_8 (1 << 7)
123 #define DI_GEN_POLARITY_DISP_CLK (1 << 17)
124 #define DI_GEN_DI_CLK_EXT (1 << 20)
125 #define DI_GEN_DI_VSYNC_EXT (1 << 21)
127 #define DI_POL_DRDY_DATA_POLARITY (1 << 7)
128 #define DI_POL_DRDY_POLARITY_15 (1 << 4)
130 #define DI_VSYNC_SEL_OFFSET 13
132 static inline u32 ipu_di_read(struct ipu_di *di, unsigned offset)
134 return readl(di->base + offset);
137 static inline void ipu_di_write(struct ipu_di *di, u32 value, unsigned offset)
139 writel(value, di->base + offset);
142 static void ipu_di_data_wave_config(struct ipu_di *di,
144 int access_size, int component_size)
147 reg = (access_size << DI_DW_GEN_ACCESS_SIZE_OFFSET) |
148 (component_size << DI_DW_GEN_COMPONENT_SIZE_OFFSET);
149 ipu_di_write(di, reg, DI_DW_GEN(wave_gen));
152 static void ipu_di_data_pin_config(struct ipu_di *di, int wave_gen, int di_pin,
153 int set, int up, int down)
157 reg = ipu_di_read(di, DI_DW_GEN(wave_gen));
158 reg &= ~(0x3 << (di_pin * 2));
159 reg |= set << (di_pin * 2);
160 ipu_di_write(di, reg, DI_DW_GEN(wave_gen));
162 ipu_di_write(di, (down << 16) | up, DI_DW_SET(wave_gen, set));
165 static void ipu_di_sync_config(struct ipu_di *di, struct di_sync_config *config,
166 int start, int count)
171 for (i = 0; i < count; i++) {
172 struct di_sync_config *c = &config[i];
173 int wave_gen = start + i + 1;
175 if ((c->run_count >= 0x1000) || (c->offset_count >= 0x1000) ||
176 (c->repeat_count >= 0x1000) ||
177 (c->cnt_up >= 0x400) ||
178 (c->cnt_down >= 0x400)) {
179 dev_err(di->ipu->dev, "DI%d counters out of range.\n",
184 reg = DI_SW_GEN0_RUN_COUNT(c->run_count) |
185 DI_SW_GEN0_RUN_SRC(c->run_src) |
186 DI_SW_GEN0_OFFSET_COUNT(c->offset_count) |
187 DI_SW_GEN0_OFFSET_SRC(c->offset_src);
188 ipu_di_write(di, reg, DI_SW_GEN0(wave_gen));
190 reg = DI_SW_GEN1_CNT_POL_GEN_EN(c->cnt_polarity_gen_en) |
191 DI_SW_GEN1_CNT_CLR_SRC(c->cnt_clr_src) |
192 DI_SW_GEN1_CNT_POL_TRIGGER_SRC(
193 c->cnt_polarity_trigger_src) |
194 DI_SW_GEN1_CNT_POL_CLR_SRC(c->cnt_polarity_clr_src) |
195 DI_SW_GEN1_CNT_DOWN(c->cnt_down) |
196 DI_SW_GEN1_CNT_UP(c->cnt_up);
198 /* Enable auto reload */
199 if (c->repeat_count == 0)
200 reg |= DI_SW_GEN1_AUTO_RELOAD;
202 ipu_di_write(di, reg, DI_SW_GEN1(wave_gen));
204 reg = ipu_di_read(di, DI_STP_REP(wave_gen));
205 reg &= ~(0xffff << (16 * ((wave_gen - 1) & 0x1)));
206 reg |= c->repeat_count << (16 * ((wave_gen - 1) & 0x1));
207 ipu_di_write(di, reg, DI_STP_REP(wave_gen));
211 static void ipu_di_sync_config_interlaced(struct ipu_di *di,
212 struct ipu_di_signal_cfg *sig)
214 u32 h_total = sig->mode.hactive + sig->mode.hsync_len +
215 sig->mode.hback_porch + sig->mode.hfront_porch;
216 u32 v_total = sig->mode.vactive + sig->mode.vsync_len +
217 sig->mode.vback_porch + sig->mode.vfront_porch;
218 struct di_sync_config cfg[] = {
220 /* 1: internal VSYNC for each frame */
221 .run_count = v_total * 2 - 1,
222 .run_src = 3, /* == counter 7 */
224 /* PIN2: HSYNC waveform */
225 .run_count = h_total - 1,
226 .run_src = DI_SYNC_CLK,
227 .cnt_polarity_gen_en = 1,
228 .cnt_polarity_trigger_src = DI_SYNC_CLK,
229 .cnt_down = sig->mode.hsync_len * 2,
231 /* PIN3: VSYNC waveform */
232 .run_count = v_total - 1,
233 .run_src = 4, /* == counter 7 */
234 .cnt_polarity_gen_en = 1,
235 .cnt_polarity_trigger_src = 4, /* == counter 7 */
236 .cnt_down = sig->mode.vsync_len * 2,
237 .cnt_clr_src = DI_SYNC_CNT1,
240 .run_count = v_total / 2,
241 .run_src = DI_SYNC_HSYNC,
242 .offset_count = h_total / 2,
243 .offset_src = DI_SYNC_CLK,
245 .cnt_clr_src = DI_SYNC_CNT1,
247 /* 5: Active lines */
248 .run_src = DI_SYNC_HSYNC,
249 .offset_count = (sig->mode.vsync_len +
250 sig->mode.vback_porch) / 2,
251 .offset_src = DI_SYNC_HSYNC,
252 .repeat_count = sig->mode.vactive / 2,
253 .cnt_clr_src = DI_SYNC_CNT4,
255 /* 6: Active pixel, referenced by DC */
256 .run_src = DI_SYNC_CLK,
257 .offset_count = sig->mode.hsync_len +
258 sig->mode.hback_porch,
259 .offset_src = DI_SYNC_CLK,
260 .repeat_count = sig->mode.hactive,
261 .cnt_clr_src = DI_SYNC_CNT5,
263 /* 7: Half line HSYNC */
264 .run_count = h_total / 2 - 1,
265 .run_src = DI_SYNC_CLK,
269 ipu_di_sync_config(di, cfg, 0, ARRAY_SIZE(cfg));
271 ipu_di_write(di, v_total / 2 - 1, DI_SCR_CONF);
274 static void ipu_di_sync_config_noninterlaced(struct ipu_di *di,
275 struct ipu_di_signal_cfg *sig, int div)
277 u32 h_total = sig->mode.hactive + sig->mode.hsync_len +
278 sig->mode.hback_porch + sig->mode.hfront_porch;
279 u32 v_total = sig->mode.vactive + sig->mode.vsync_len +
280 sig->mode.vback_porch + sig->mode.vfront_porch;
281 struct di_sync_config cfg[] = {
284 .run_count = h_total - 1,
285 .run_src = DI_SYNC_CLK,
288 .run_count = h_total - 1,
289 .run_src = DI_SYNC_CLK,
290 .offset_count = div * sig->v_to_h_sync,
291 .offset_src = DI_SYNC_CLK,
292 .cnt_polarity_gen_en = 1,
293 .cnt_polarity_trigger_src = DI_SYNC_CLK,
294 .cnt_down = sig->mode.hsync_len * 2,
297 .run_count = v_total - 1,
298 .run_src = DI_SYNC_INT_HSYNC,
299 .cnt_polarity_gen_en = 1,
300 .cnt_polarity_trigger_src = DI_SYNC_INT_HSYNC,
301 .cnt_down = sig->mode.vsync_len * 2,
304 .run_src = DI_SYNC_HSYNC,
305 .offset_count = sig->mode.vsync_len +
306 sig->mode.vback_porch,
307 .offset_src = DI_SYNC_HSYNC,
308 .repeat_count = sig->mode.vactive,
309 .cnt_clr_src = DI_SYNC_VSYNC,
311 /* 5: Pixel Active, referenced by DC */
312 .run_src = DI_SYNC_CLK,
313 .offset_count = sig->mode.hsync_len +
314 sig->mode.hback_porch,
315 .offset_src = DI_SYNC_CLK,
316 .repeat_count = sig->mode.hactive,
317 .cnt_clr_src = 5, /* Line Active */
328 /* can't use #7 and #8 for line active and pixel active counters */
329 struct di_sync_config cfg_vga[] = {
332 .run_count = h_total - 1,
333 .run_src = DI_SYNC_CLK,
336 .run_count = v_total - 1,
337 .run_src = DI_SYNC_INT_HSYNC,
340 .run_src = DI_SYNC_INT_HSYNC,
341 .offset_count = sig->mode.vsync_len +
342 sig->mode.vback_porch,
343 .offset_src = DI_SYNC_INT_HSYNC,
344 .repeat_count = sig->mode.vactive,
345 .cnt_clr_src = 3 /* VSYNC */,
347 /* PIN4: HSYNC for VGA via TVEv2 on TQ MBa53 */
348 .run_count = h_total - 1,
349 .run_src = DI_SYNC_CLK,
350 .offset_count = div * sig->v_to_h_sync + 18, /* magic value from Freescale TVE driver */
351 .offset_src = DI_SYNC_CLK,
352 .cnt_polarity_gen_en = 1,
353 .cnt_polarity_trigger_src = DI_SYNC_CLK,
354 .cnt_down = sig->mode.hsync_len * 2,
356 /* 5: Pixel Active signal to DC */
357 .run_src = DI_SYNC_CLK,
358 .offset_count = sig->mode.hsync_len +
359 sig->mode.hback_porch,
360 .offset_src = DI_SYNC_CLK,
361 .repeat_count = sig->mode.hactive,
362 .cnt_clr_src = 4, /* Line Active */
364 /* PIN6: VSYNC for VGA via TVEv2 on TQ MBa53 */
365 .run_count = v_total - 1,
366 .run_src = DI_SYNC_INT_HSYNC,
367 .offset_count = 1, /* magic value from Freescale TVE driver */
368 .offset_src = DI_SYNC_INT_HSYNC,
369 .cnt_polarity_gen_en = 1,
370 .cnt_polarity_trigger_src = DI_SYNC_INT_HSYNC,
371 .cnt_down = sig->mode.vsync_len * 2,
373 /* PIN4: HSYNC for VGA via TVEv2 on i.MX53-QSB */
374 .run_count = h_total - 1,
375 .run_src = DI_SYNC_CLK,
376 .offset_count = div * sig->v_to_h_sync + 18, /* magic value from Freescale TVE driver */
377 .offset_src = DI_SYNC_CLK,
378 .cnt_polarity_gen_en = 1,
379 .cnt_polarity_trigger_src = DI_SYNC_CLK,
380 .cnt_down = sig->mode.hsync_len * 2,
382 /* PIN6: VSYNC for VGA via TVEv2 on i.MX53-QSB */
383 .run_count = v_total - 1,
384 .run_src = DI_SYNC_INT_HSYNC,
385 .offset_count = 1, /* magic value from Freescale TVE driver */
386 .offset_src = DI_SYNC_INT_HSYNC,
387 .cnt_polarity_gen_en = 1,
388 .cnt_polarity_trigger_src = DI_SYNC_INT_HSYNC,
389 .cnt_down = sig->mode.vsync_len * 2,
395 ipu_di_write(di, v_total - 1, DI_SCR_CONF);
396 if (sig->hsync_pin == 2 && sig->vsync_pin == 3)
397 ipu_di_sync_config(di, cfg, 0, ARRAY_SIZE(cfg));
399 ipu_di_sync_config(di, cfg_vga, 0, ARRAY_SIZE(cfg_vga));
402 static void ipu_di_config_clock(struct ipu_di *di,
403 const struct ipu_di_signal_cfg *sig)
409 if (sig->clkflags & IPU_DI_CLKMODE_EXT) {
411 * CLKMODE_EXT means we must use the DI clock: this is
412 * needed for things like LVDS which needs to feed the
413 * DI and LDB with the same pixel clock.
417 if (sig->clkflags & IPU_DI_CLKMODE_SYNC) {
419 * CLKMODE_SYNC means that we want the DI to be
420 * clocked at the same rate as the parent clock.
421 * This is needed (eg) for LDB which needs to be
422 * fed with the same pixel clock. We assume that
423 * the LDB clock has already been set correctly.
428 * We can use the divider. We should really have
429 * a flag here indicating whether the bridge can
430 * cope with a fractional divider or not. For the
431 * time being, let's go for simplicitly and
434 unsigned long in_rate;
437 clk_set_rate(clk, sig->mode.pixelclock);
439 in_rate = clk_get_rate(clk);
440 div = DIV_ROUND_CLOSEST(in_rate, sig->mode.pixelclock);
441 div = clamp(div, 1U, 255U);
447 * For other interfaces, we can arbitarily select between
448 * the DI specific clock and the internal IPU clock. See
449 * DI_GENERAL bit 20. We select the IPU clock if it can
450 * give us a clock rate within 1% of the requested frequency,
451 * otherwise we use the DI clock.
453 unsigned long rate, clkrate;
456 clkrate = clk_get_rate(di->clk_ipu);
457 div = DIV_ROUND_CLOSEST(clkrate, sig->mode.pixelclock);
458 div = clamp(div, 1U, 255U);
459 rate = clkrate / div;
461 error = rate / (sig->mode.pixelclock / 1000);
463 dev_dbg(di->ipu->dev, " IPU clock can give %lu with divider %u, error %d.%u%%\n",
464 rate, div, (signed)(error - 1000) / 10, error % 10);
466 /* Allow a 1% error */
467 if (error < 1010 && error >= 990) {
472 unsigned long in_rate;
477 clk_set_rate(clk, sig->mode.pixelclock);
479 in_rate = clk_get_rate(clk);
480 div = DIV_ROUND_CLOSEST(in_rate, sig->mode.pixelclock);
481 div = clamp(div, 1U, 255U);
487 di->clk_di_pixel = clk;
489 /* Set the divider */
490 ipu_di_write(di, clkgen0, DI_BS_CLKGEN0);
493 * Set the high/low periods. Bits 24:16 give us the falling edge,
494 * and bits 8:0 give the rising edge. LSB is fraction, and is
495 * based on the divider above. We want a 50% duty cycle, so set
496 * the falling edge to be half the divider.
498 ipu_di_write(di, (clkgen0 >> 4) << 16, DI_BS_CLKGEN1);
500 /* Finally select the input clock */
501 val = ipu_di_read(di, DI_GENERAL) & ~DI_GEN_DI_CLK_EXT;
502 if (clk == di->clk_di)
503 val |= DI_GEN_DI_CLK_EXT;
504 ipu_di_write(di, val, DI_GENERAL);
506 dev_dbg(di->ipu->dev, "Want %luHz IPU %luHz DI %luHz using %s, %luHz\n",
507 sig->mode.pixelclock,
508 clk_get_rate(di->clk_ipu),
509 clk_get_rate(di->clk_di),
510 clk == di->clk_di ? "DI" : "IPU",
511 clk_get_rate(di->clk_di_pixel) / (clkgen0 >> 4));
515 * This function is called to adjust a video mode to IPU restrictions.
516 * It is meant to be called from drm crtc mode_fixup() methods.
518 int ipu_di_adjust_videomode(struct ipu_di *di, struct videomode *mode)
522 if (mode->vfront_porch >= 2)
525 diff = 2 - mode->vfront_porch;
527 if (mode->vback_porch >= diff) {
528 mode->vfront_porch = 2;
529 mode->vback_porch -= diff;
530 } else if (mode->vsync_len > diff) {
531 mode->vfront_porch = 2;
532 mode->vsync_len = mode->vsync_len - diff;
534 dev_warn(di->ipu->dev, "failed to adjust videomode\n");
538 dev_warn(di->ipu->dev, "videomode adapted for IPU restrictions\n");
541 EXPORT_SYMBOL_GPL(ipu_di_adjust_videomode);
543 static u32 ipu_di_gen_polarity(int pin)
547 return DI_GEN_POLARITY_1;
549 return DI_GEN_POLARITY_2;
551 return DI_GEN_POLARITY_3;
553 return DI_GEN_POLARITY_4;
555 return DI_GEN_POLARITY_5;
557 return DI_GEN_POLARITY_6;
559 return DI_GEN_POLARITY_7;
561 return DI_GEN_POLARITY_8;
566 int ipu_di_init_sync_panel(struct ipu_di *di, struct ipu_di_signal_cfg *sig)
569 u32 di_gen, vsync_cnt;
572 dev_dbg(di->ipu->dev, "disp %d: panel size = %d x %d\n",
573 di->id, sig->mode.hactive, sig->mode.vactive);
575 if ((sig->mode.vsync_len == 0) || (sig->mode.hsync_len == 0))
578 dev_dbg(di->ipu->dev, "Clocks: IPU %luHz DI %luHz Needed %luHz\n",
579 clk_get_rate(di->clk_ipu),
580 clk_get_rate(di->clk_di),
581 sig->mode.pixelclock);
583 mutex_lock(&di_mutex);
585 ipu_di_config_clock(di, sig);
587 div = ipu_di_read(di, DI_BS_CLKGEN0) & 0xfff;
588 div = div / 16; /* Now divider is integer portion */
590 /* Setup pixel clock timing */
591 /* Down time is half of period */
592 ipu_di_write(di, (div << 16), DI_BS_CLKGEN1);
594 ipu_di_data_wave_config(di, SYNC_WAVE, div - 1, div - 1);
595 ipu_di_data_pin_config(di, SYNC_WAVE, DI_PIN15, 3, 0, div * 2);
597 di_gen = ipu_di_read(di, DI_GENERAL) & DI_GEN_DI_CLK_EXT;
598 di_gen |= DI_GEN_DI_VSYNC_EXT;
600 if (sig->mode.flags & DISPLAY_FLAGS_INTERLACED) {
601 ipu_di_sync_config_interlaced(di, sig);
604 di_gen |= 0x10000000;
608 ipu_di_sync_config_noninterlaced(di, sig, div);
613 * TODO: change only for TVEv2, parallel display
616 if (!(sig->hsync_pin == 2 && sig->vsync_pin == 3))
620 if (sig->mode.flags & DISPLAY_FLAGS_HSYNC_HIGH)
621 di_gen |= ipu_di_gen_polarity(sig->hsync_pin);
622 if (sig->mode.flags & DISPLAY_FLAGS_VSYNC_HIGH)
623 di_gen |= ipu_di_gen_polarity(sig->vsync_pin);
626 di_gen |= DI_GEN_POLARITY_DISP_CLK;
628 ipu_di_write(di, di_gen, DI_GENERAL);
630 ipu_di_write(di, (--vsync_cnt << DI_VSYNC_SEL_OFFSET) | 0x00000002,
633 reg = ipu_di_read(di, DI_POL);
634 reg &= ~(DI_POL_DRDY_DATA_POLARITY | DI_POL_DRDY_POLARITY_15);
637 reg |= DI_POL_DRDY_POLARITY_15;
639 reg |= DI_POL_DRDY_DATA_POLARITY;
641 ipu_di_write(di, reg, DI_POL);
643 mutex_unlock(&di_mutex);
647 EXPORT_SYMBOL_GPL(ipu_di_init_sync_panel);
649 int ipu_di_enable(struct ipu_di *di)
653 WARN_ON(IS_ERR(di->clk_di_pixel));
655 ret = clk_prepare_enable(di->clk_di_pixel);
659 ipu_module_enable(di->ipu, di->module);
663 EXPORT_SYMBOL_GPL(ipu_di_enable);
665 int ipu_di_disable(struct ipu_di *di)
667 WARN_ON(IS_ERR(di->clk_di_pixel));
669 ipu_module_disable(di->ipu, di->module);
671 clk_disable_unprepare(di->clk_di_pixel);
675 EXPORT_SYMBOL_GPL(ipu_di_disable);
677 int ipu_di_get_num(struct ipu_di *di)
681 EXPORT_SYMBOL_GPL(ipu_di_get_num);
683 static DEFINE_MUTEX(ipu_di_lock);
685 struct ipu_di *ipu_di_get(struct ipu_soc *ipu, int disp)
690 return ERR_PTR(-EINVAL);
692 di = ipu->di_priv[disp];
694 mutex_lock(&ipu_di_lock);
697 di = ERR_PTR(-EBUSY);
703 mutex_unlock(&ipu_di_lock);
707 EXPORT_SYMBOL_GPL(ipu_di_get);
709 void ipu_di_put(struct ipu_di *di)
711 mutex_lock(&ipu_di_lock);
715 mutex_unlock(&ipu_di_lock);
717 EXPORT_SYMBOL_GPL(ipu_di_put);
719 int ipu_di_init(struct ipu_soc *ipu, struct device *dev, int id,
721 u32 module, struct clk *clk_ipu)
728 di = devm_kzalloc(dev, sizeof(*di), GFP_KERNEL);
732 ipu->di_priv[id] = di;
734 di->clk_di = devm_clk_get(dev, id ? "di1" : "di0");
735 if (IS_ERR(di->clk_di))
736 return PTR_ERR(di->clk_di);
740 di->clk_ipu = clk_ipu;
741 di->base = devm_ioremap(dev, base, PAGE_SIZE);
745 ipu_di_write(di, 0x10, DI_BS_CLKGEN0);
747 dev_dbg(dev, "DI%d base: 0x%08lx remapped to %p\n",
755 void ipu_di_exit(struct ipu_soc *ipu, int id)