2 * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>
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/module.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/reset.h>
19 #include <linux/platform_device.h>
20 #include <linux/err.h>
21 #include <linux/spinlock.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
25 #include <linux/clk.h>
26 #include <linux/list.h>
27 #include <linux/irq.h>
28 #include <linux/irqchip/chained_irq.h>
29 #include <linux/irqdomain.h>
30 #include <linux/of_device.h>
31 #include <linux/of_graph.h>
33 #include <drm/drm_fourcc.h>
35 #include <video/imx-ipu-v3.h>
38 static inline u32 ipu_cm_read(struct ipu_soc *ipu, unsigned offset)
40 return readl(ipu->cm_reg + offset);
43 static inline void ipu_cm_write(struct ipu_soc *ipu, u32 value, unsigned offset)
45 writel(value, ipu->cm_reg + offset);
48 int ipu_get_num(struct ipu_soc *ipu)
52 EXPORT_SYMBOL_GPL(ipu_get_num);
54 void ipu_srm_dp_update(struct ipu_soc *ipu, bool sync)
58 val = ipu_cm_read(ipu, IPU_SRM_PRI2);
59 val &= ~DP_S_SRM_MODE_MASK;
60 val |= sync ? DP_S_SRM_MODE_NEXT_FRAME :
62 ipu_cm_write(ipu, val, IPU_SRM_PRI2);
64 EXPORT_SYMBOL_GPL(ipu_srm_dp_update);
66 enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
69 case DRM_FORMAT_ARGB1555:
70 case DRM_FORMAT_ABGR1555:
71 case DRM_FORMAT_RGBA5551:
72 case DRM_FORMAT_BGRA5551:
73 case DRM_FORMAT_RGB565:
74 case DRM_FORMAT_BGR565:
75 case DRM_FORMAT_RGB888:
76 case DRM_FORMAT_BGR888:
77 case DRM_FORMAT_ARGB4444:
78 case DRM_FORMAT_XRGB8888:
79 case DRM_FORMAT_XBGR8888:
80 case DRM_FORMAT_RGBX8888:
81 case DRM_FORMAT_BGRX8888:
82 case DRM_FORMAT_ARGB8888:
83 case DRM_FORMAT_ABGR8888:
84 case DRM_FORMAT_RGBA8888:
85 case DRM_FORMAT_BGRA8888:
86 case DRM_FORMAT_RGB565_A8:
87 case DRM_FORMAT_BGR565_A8:
88 case DRM_FORMAT_RGB888_A8:
89 case DRM_FORMAT_BGR888_A8:
90 case DRM_FORMAT_RGBX8888_A8:
91 case DRM_FORMAT_BGRX8888_A8:
92 return IPUV3_COLORSPACE_RGB;
95 case DRM_FORMAT_YUV420:
96 case DRM_FORMAT_YVU420:
97 case DRM_FORMAT_YUV422:
98 case DRM_FORMAT_YVU422:
99 case DRM_FORMAT_YUV444:
100 case DRM_FORMAT_YVU444:
101 case DRM_FORMAT_NV12:
102 case DRM_FORMAT_NV21:
103 case DRM_FORMAT_NV16:
104 case DRM_FORMAT_NV61:
105 return IPUV3_COLORSPACE_YUV;
107 return IPUV3_COLORSPACE_UNKNOWN;
110 EXPORT_SYMBOL_GPL(ipu_drm_fourcc_to_colorspace);
112 enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
114 switch (pixelformat) {
115 case V4L2_PIX_FMT_YUV420:
116 case V4L2_PIX_FMT_YVU420:
117 case V4L2_PIX_FMT_YUV422P:
118 case V4L2_PIX_FMT_UYVY:
119 case V4L2_PIX_FMT_YUYV:
120 case V4L2_PIX_FMT_NV12:
121 case V4L2_PIX_FMT_NV21:
122 case V4L2_PIX_FMT_NV16:
123 case V4L2_PIX_FMT_NV61:
124 return IPUV3_COLORSPACE_YUV;
125 case V4L2_PIX_FMT_RGB32:
126 case V4L2_PIX_FMT_BGR32:
127 case V4L2_PIX_FMT_RGB24:
128 case V4L2_PIX_FMT_BGR24:
129 case V4L2_PIX_FMT_RGB565:
130 return IPUV3_COLORSPACE_RGB;
132 return IPUV3_COLORSPACE_UNKNOWN;
135 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace);
137 bool ipu_pixelformat_is_planar(u32 pixelformat)
139 switch (pixelformat) {
140 case V4L2_PIX_FMT_YUV420:
141 case V4L2_PIX_FMT_YVU420:
142 case V4L2_PIX_FMT_YUV422P:
143 case V4L2_PIX_FMT_NV12:
144 case V4L2_PIX_FMT_NV21:
145 case V4L2_PIX_FMT_NV16:
146 case V4L2_PIX_FMT_NV61:
152 EXPORT_SYMBOL_GPL(ipu_pixelformat_is_planar);
154 enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code)
156 switch (mbus_code & 0xf000) {
158 return IPUV3_COLORSPACE_RGB;
160 return IPUV3_COLORSPACE_YUV;
162 return IPUV3_COLORSPACE_UNKNOWN;
165 EXPORT_SYMBOL_GPL(ipu_mbus_code_to_colorspace);
167 int ipu_stride_to_bytes(u32 pixel_stride, u32 pixelformat)
169 switch (pixelformat) {
170 case V4L2_PIX_FMT_YUV420:
171 case V4L2_PIX_FMT_YVU420:
172 case V4L2_PIX_FMT_YUV422P:
173 case V4L2_PIX_FMT_NV12:
174 case V4L2_PIX_FMT_NV21:
175 case V4L2_PIX_FMT_NV16:
176 case V4L2_PIX_FMT_NV61:
178 * for the planar YUV formats, the stride passed to
179 * cpmem must be the stride in bytes of the Y plane.
180 * And all the planar YUV formats have an 8-bit
183 return (8 * pixel_stride) >> 3;
184 case V4L2_PIX_FMT_RGB565:
185 case V4L2_PIX_FMT_YUYV:
186 case V4L2_PIX_FMT_UYVY:
187 return (16 * pixel_stride) >> 3;
188 case V4L2_PIX_FMT_BGR24:
189 case V4L2_PIX_FMT_RGB24:
190 return (24 * pixel_stride) >> 3;
191 case V4L2_PIX_FMT_BGR32:
192 case V4L2_PIX_FMT_RGB32:
193 return (32 * pixel_stride) >> 3;
200 EXPORT_SYMBOL_GPL(ipu_stride_to_bytes);
202 int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,
203 bool hflip, bool vflip)
229 *mode = (enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf);
232 EXPORT_SYMBOL_GPL(ipu_degrees_to_rot_mode);
234 int ipu_rot_mode_to_degrees(int *degrees, enum ipu_rotate_mode mode,
235 bool hflip, bool vflip)
239 r90 = ((u32)mode >> 2) & 0x1;
240 hf = ((u32)mode >> 1) & 0x1;
241 vf = ((u32)mode >> 0) & 0x1;
245 switch ((enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf)) {
246 case IPU_ROTATE_NONE:
249 case IPU_ROTATE_90_RIGHT:
255 case IPU_ROTATE_90_LEFT:
264 EXPORT_SYMBOL_GPL(ipu_rot_mode_to_degrees);
266 struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num)
268 struct ipuv3_channel *channel;
270 dev_dbg(ipu->dev, "%s %d\n", __func__, num);
273 return ERR_PTR(-ENODEV);
275 mutex_lock(&ipu->channel_lock);
277 channel = &ipu->channel[num];
280 channel = ERR_PTR(-EBUSY);
284 channel->busy = true;
288 mutex_unlock(&ipu->channel_lock);
292 EXPORT_SYMBOL_GPL(ipu_idmac_get);
294 void ipu_idmac_put(struct ipuv3_channel *channel)
296 struct ipu_soc *ipu = channel->ipu;
298 dev_dbg(ipu->dev, "%s %d\n", __func__, channel->num);
300 mutex_lock(&ipu->channel_lock);
302 channel->busy = false;
304 mutex_unlock(&ipu->channel_lock);
306 EXPORT_SYMBOL_GPL(ipu_idmac_put);
308 #define idma_mask(ch) (1 << ((ch) & 0x1f))
311 * This is an undocumented feature, a write one to a channel bit in
312 * IPU_CHA_CUR_BUF and IPU_CHA_TRIPLE_CUR_BUF will reset the channel's
313 * internal current buffer pointer so that transfers start from buffer
314 * 0 on the next channel enable (that's the theory anyway, the imx6 TRM
315 * only says these are read-only registers). This operation is required
316 * for channel linking to work correctly, for instance video capture
317 * pipelines that carry out image rotations will fail after the first
318 * streaming unless this function is called for each channel before
319 * re-enabling the channels.
321 static void __ipu_idmac_reset_current_buffer(struct ipuv3_channel *channel)
323 struct ipu_soc *ipu = channel->ipu;
324 unsigned int chno = channel->num;
326 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_CUR_BUF(chno));
329 void ipu_idmac_set_double_buffer(struct ipuv3_channel *channel,
332 struct ipu_soc *ipu = channel->ipu;
336 spin_lock_irqsave(&ipu->lock, flags);
338 reg = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
340 reg |= idma_mask(channel->num);
342 reg &= ~idma_mask(channel->num);
343 ipu_cm_write(ipu, reg, IPU_CHA_DB_MODE_SEL(channel->num));
345 __ipu_idmac_reset_current_buffer(channel);
347 spin_unlock_irqrestore(&ipu->lock, flags);
349 EXPORT_SYMBOL_GPL(ipu_idmac_set_double_buffer);
351 static const struct {
355 } idmac_lock_en_info[] = {
356 { .chnum = 5, .reg = IDMAC_CH_LOCK_EN_1, .shift = 0, },
357 { .chnum = 11, .reg = IDMAC_CH_LOCK_EN_1, .shift = 2, },
358 { .chnum = 12, .reg = IDMAC_CH_LOCK_EN_1, .shift = 4, },
359 { .chnum = 14, .reg = IDMAC_CH_LOCK_EN_1, .shift = 6, },
360 { .chnum = 15, .reg = IDMAC_CH_LOCK_EN_1, .shift = 8, },
361 { .chnum = 20, .reg = IDMAC_CH_LOCK_EN_1, .shift = 10, },
362 { .chnum = 21, .reg = IDMAC_CH_LOCK_EN_1, .shift = 12, },
363 { .chnum = 22, .reg = IDMAC_CH_LOCK_EN_1, .shift = 14, },
364 { .chnum = 23, .reg = IDMAC_CH_LOCK_EN_1, .shift = 16, },
365 { .chnum = 27, .reg = IDMAC_CH_LOCK_EN_1, .shift = 18, },
366 { .chnum = 28, .reg = IDMAC_CH_LOCK_EN_1, .shift = 20, },
367 { .chnum = 45, .reg = IDMAC_CH_LOCK_EN_2, .shift = 0, },
368 { .chnum = 46, .reg = IDMAC_CH_LOCK_EN_2, .shift = 2, },
369 { .chnum = 47, .reg = IDMAC_CH_LOCK_EN_2, .shift = 4, },
370 { .chnum = 48, .reg = IDMAC_CH_LOCK_EN_2, .shift = 6, },
371 { .chnum = 49, .reg = IDMAC_CH_LOCK_EN_2, .shift = 8, },
372 { .chnum = 50, .reg = IDMAC_CH_LOCK_EN_2, .shift = 10, },
375 int ipu_idmac_lock_enable(struct ipuv3_channel *channel, int num_bursts)
377 struct ipu_soc *ipu = channel->ipu;
382 switch (num_bursts) {
385 bursts = 0x00; /* locking disabled */
400 for (i = 0; i < ARRAY_SIZE(idmac_lock_en_info); i++) {
401 if (channel->num == idmac_lock_en_info[i].chnum)
404 if (i >= ARRAY_SIZE(idmac_lock_en_info))
407 spin_lock_irqsave(&ipu->lock, flags);
409 regval = ipu_idmac_read(ipu, idmac_lock_en_info[i].reg);
410 regval &= ~(0x03 << idmac_lock_en_info[i].shift);
411 regval |= (bursts << idmac_lock_en_info[i].shift);
412 ipu_idmac_write(ipu, regval, idmac_lock_en_info[i].reg);
414 spin_unlock_irqrestore(&ipu->lock, flags);
418 EXPORT_SYMBOL_GPL(ipu_idmac_lock_enable);
420 int ipu_module_enable(struct ipu_soc *ipu, u32 mask)
422 unsigned long lock_flags;
425 spin_lock_irqsave(&ipu->lock, lock_flags);
427 val = ipu_cm_read(ipu, IPU_DISP_GEN);
429 if (mask & IPU_CONF_DI0_EN)
430 val |= IPU_DI0_COUNTER_RELEASE;
431 if (mask & IPU_CONF_DI1_EN)
432 val |= IPU_DI1_COUNTER_RELEASE;
434 ipu_cm_write(ipu, val, IPU_DISP_GEN);
436 val = ipu_cm_read(ipu, IPU_CONF);
438 ipu_cm_write(ipu, val, IPU_CONF);
440 spin_unlock_irqrestore(&ipu->lock, lock_flags);
444 EXPORT_SYMBOL_GPL(ipu_module_enable);
446 int ipu_module_disable(struct ipu_soc *ipu, u32 mask)
448 unsigned long lock_flags;
451 spin_lock_irqsave(&ipu->lock, lock_flags);
453 val = ipu_cm_read(ipu, IPU_CONF);
455 ipu_cm_write(ipu, val, IPU_CONF);
457 val = ipu_cm_read(ipu, IPU_DISP_GEN);
459 if (mask & IPU_CONF_DI0_EN)
460 val &= ~IPU_DI0_COUNTER_RELEASE;
461 if (mask & IPU_CONF_DI1_EN)
462 val &= ~IPU_DI1_COUNTER_RELEASE;
464 ipu_cm_write(ipu, val, IPU_DISP_GEN);
466 spin_unlock_irqrestore(&ipu->lock, lock_flags);
470 EXPORT_SYMBOL_GPL(ipu_module_disable);
472 int ipu_idmac_get_current_buffer(struct ipuv3_channel *channel)
474 struct ipu_soc *ipu = channel->ipu;
475 unsigned int chno = channel->num;
477 return (ipu_cm_read(ipu, IPU_CHA_CUR_BUF(chno)) & idma_mask(chno)) ? 1 : 0;
479 EXPORT_SYMBOL_GPL(ipu_idmac_get_current_buffer);
481 bool ipu_idmac_buffer_is_ready(struct ipuv3_channel *channel, u32 buf_num)
483 struct ipu_soc *ipu = channel->ipu;
487 spin_lock_irqsave(&ipu->lock, flags);
490 reg = ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num));
493 reg = ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num));
496 reg = ipu_cm_read(ipu, IPU_CHA_BUF2_RDY(channel->num));
499 spin_unlock_irqrestore(&ipu->lock, flags);
501 return ((reg & idma_mask(channel->num)) != 0);
503 EXPORT_SYMBOL_GPL(ipu_idmac_buffer_is_ready);
505 void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num)
507 struct ipu_soc *ipu = channel->ipu;
508 unsigned int chno = channel->num;
511 spin_lock_irqsave(&ipu->lock, flags);
513 /* Mark buffer as ready. */
515 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno));
517 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno));
519 spin_unlock_irqrestore(&ipu->lock, flags);
521 EXPORT_SYMBOL_GPL(ipu_idmac_select_buffer);
523 void ipu_idmac_clear_buffer(struct ipuv3_channel *channel, u32 buf_num)
525 struct ipu_soc *ipu = channel->ipu;
526 unsigned int chno = channel->num;
529 spin_lock_irqsave(&ipu->lock, flags);
531 ipu_cm_write(ipu, 0xF0300000, IPU_GPR); /* write one to clear */
534 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno));
537 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno));
540 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF2_RDY(chno));
545 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */
547 spin_unlock_irqrestore(&ipu->lock, flags);
549 EXPORT_SYMBOL_GPL(ipu_idmac_clear_buffer);
551 int ipu_idmac_enable_channel(struct ipuv3_channel *channel)
553 struct ipu_soc *ipu = channel->ipu;
557 spin_lock_irqsave(&ipu->lock, flags);
559 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
560 val |= idma_mask(channel->num);
561 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
563 spin_unlock_irqrestore(&ipu->lock, flags);
567 EXPORT_SYMBOL_GPL(ipu_idmac_enable_channel);
569 bool ipu_idmac_channel_busy(struct ipu_soc *ipu, unsigned int chno)
571 return (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(chno)) & idma_mask(chno));
573 EXPORT_SYMBOL_GPL(ipu_idmac_channel_busy);
575 int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms)
577 struct ipu_soc *ipu = channel->ipu;
578 unsigned long timeout;
580 timeout = jiffies + msecs_to_jiffies(ms);
581 while (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(channel->num)) &
582 idma_mask(channel->num)) {
583 if (time_after(jiffies, timeout))
590 EXPORT_SYMBOL_GPL(ipu_idmac_wait_busy);
592 int ipu_wait_interrupt(struct ipu_soc *ipu, int irq, int ms)
594 unsigned long timeout;
596 timeout = jiffies + msecs_to_jiffies(ms);
597 ipu_cm_write(ipu, BIT(irq % 32), IPU_INT_STAT(irq / 32));
598 while (!(ipu_cm_read(ipu, IPU_INT_STAT(irq / 32) & BIT(irq % 32)))) {
599 if (time_after(jiffies, timeout))
606 EXPORT_SYMBOL_GPL(ipu_wait_interrupt);
608 int ipu_idmac_disable_channel(struct ipuv3_channel *channel)
610 struct ipu_soc *ipu = channel->ipu;
614 spin_lock_irqsave(&ipu->lock, flags);
616 /* Disable DMA channel(s) */
617 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
618 val &= ~idma_mask(channel->num);
619 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
621 __ipu_idmac_reset_current_buffer(channel);
623 /* Set channel buffers NOT to be ready */
624 ipu_cm_write(ipu, 0xf0000000, IPU_GPR); /* write one to clear */
626 if (ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num)) &
627 idma_mask(channel->num)) {
628 ipu_cm_write(ipu, idma_mask(channel->num),
629 IPU_CHA_BUF0_RDY(channel->num));
632 if (ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num)) &
633 idma_mask(channel->num)) {
634 ipu_cm_write(ipu, idma_mask(channel->num),
635 IPU_CHA_BUF1_RDY(channel->num));
638 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */
640 /* Reset the double buffer */
641 val = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
642 val &= ~idma_mask(channel->num);
643 ipu_cm_write(ipu, val, IPU_CHA_DB_MODE_SEL(channel->num));
645 spin_unlock_irqrestore(&ipu->lock, flags);
649 EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel);
652 * The imx6 rev. D TRM says that enabling the WM feature will increase
653 * a channel's priority. Refer to Table 36-8 Calculated priority value.
654 * The sub-module that is the sink or source for the channel must enable
655 * watermark signal for this to take effect (SMFC_WM for instance).
657 void ipu_idmac_enable_watermark(struct ipuv3_channel *channel, bool enable)
659 struct ipu_soc *ipu = channel->ipu;
663 spin_lock_irqsave(&ipu->lock, flags);
665 val = ipu_idmac_read(ipu, IDMAC_WM_EN(channel->num));
667 val |= 1 << (channel->num % 32);
669 val &= ~(1 << (channel->num % 32));
670 ipu_idmac_write(ipu, val, IDMAC_WM_EN(channel->num));
672 spin_unlock_irqrestore(&ipu->lock, flags);
674 EXPORT_SYMBOL_GPL(ipu_idmac_enable_watermark);
676 static int ipu_memory_reset(struct ipu_soc *ipu)
678 unsigned long timeout;
680 ipu_cm_write(ipu, 0x807FFFFF, IPU_MEM_RST);
682 timeout = jiffies + msecs_to_jiffies(1000);
683 while (ipu_cm_read(ipu, IPU_MEM_RST) & 0x80000000) {
684 if (time_after(jiffies, timeout))
693 * Set the source mux for the given CSI. Selects either parallel or
696 void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2)
701 mask = (csi_id == 1) ? IPU_CONF_CSI1_DATA_SOURCE :
702 IPU_CONF_CSI0_DATA_SOURCE;
704 spin_lock_irqsave(&ipu->lock, flags);
706 val = ipu_cm_read(ipu, IPU_CONF);
711 ipu_cm_write(ipu, val, IPU_CONF);
713 spin_unlock_irqrestore(&ipu->lock, flags);
715 EXPORT_SYMBOL_GPL(ipu_set_csi_src_mux);
718 * Set the source mux for the IC. Selects either CSI[01] or the VDI.
720 void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi)
725 spin_lock_irqsave(&ipu->lock, flags);
727 val = ipu_cm_read(ipu, IPU_CONF);
729 val |= IPU_CONF_IC_INPUT;
731 val &= ~IPU_CONF_IC_INPUT;
734 val |= IPU_CONF_CSI_SEL;
736 val &= ~IPU_CONF_CSI_SEL;
738 ipu_cm_write(ipu, val, IPU_CONF);
740 spin_unlock_irqrestore(&ipu->lock, flags);
742 EXPORT_SYMBOL_GPL(ipu_set_ic_src_mux);
745 /* Frame Synchronization Unit Channel Linking */
747 struct fsu_link_reg_info {
754 struct fsu_link_info {
755 struct fsu_link_reg_info src;
756 struct fsu_link_reg_info sink;
759 static const struct fsu_link_info fsu_link_info[] = {
761 .src = { IPUV3_CHANNEL_IC_PRP_ENC_MEM, IPU_FS_PROC_FLOW2,
762 FS_PRP_ENC_DEST_SEL_MASK, FS_PRP_ENC_DEST_SEL_IRT_ENC },
763 .sink = { IPUV3_CHANNEL_MEM_ROT_ENC, IPU_FS_PROC_FLOW1,
764 FS_PRPENC_ROT_SRC_SEL_MASK, FS_PRPENC_ROT_SRC_SEL_ENC },
766 .src = { IPUV3_CHANNEL_IC_PRP_VF_MEM, IPU_FS_PROC_FLOW2,
767 FS_PRPVF_DEST_SEL_MASK, FS_PRPVF_DEST_SEL_IRT_VF },
768 .sink = { IPUV3_CHANNEL_MEM_ROT_VF, IPU_FS_PROC_FLOW1,
769 FS_PRPVF_ROT_SRC_SEL_MASK, FS_PRPVF_ROT_SRC_SEL_VF },
771 .src = { IPUV3_CHANNEL_IC_PP_MEM, IPU_FS_PROC_FLOW2,
772 FS_PP_DEST_SEL_MASK, FS_PP_DEST_SEL_IRT_PP },
773 .sink = { IPUV3_CHANNEL_MEM_ROT_PP, IPU_FS_PROC_FLOW1,
774 FS_PP_ROT_SRC_SEL_MASK, FS_PP_ROT_SRC_SEL_PP },
776 .src = { IPUV3_CHANNEL_CSI_DIRECT, 0 },
777 .sink = { IPUV3_CHANNEL_CSI_VDI_PREV, IPU_FS_PROC_FLOW1,
778 FS_VDI_SRC_SEL_MASK, FS_VDI_SRC_SEL_CSI_DIRECT },
782 static const struct fsu_link_info *find_fsu_link_info(int src, int sink)
786 for (i = 0; i < ARRAY_SIZE(fsu_link_info); i++) {
787 if (src == fsu_link_info[i].src.chno &&
788 sink == fsu_link_info[i].sink.chno)
789 return &fsu_link_info[i];
796 * Links a source channel to a sink channel in the FSU.
798 int ipu_fsu_link(struct ipu_soc *ipu, int src_ch, int sink_ch)
800 const struct fsu_link_info *link;
801 u32 src_reg, sink_reg;
804 link = find_fsu_link_info(src_ch, sink_ch);
808 spin_lock_irqsave(&ipu->lock, flags);
810 if (link->src.mask) {
811 src_reg = ipu_cm_read(ipu, link->src.reg);
812 src_reg &= ~link->src.mask;
813 src_reg |= link->src.val;
814 ipu_cm_write(ipu, src_reg, link->src.reg);
817 if (link->sink.mask) {
818 sink_reg = ipu_cm_read(ipu, link->sink.reg);
819 sink_reg &= ~link->sink.mask;
820 sink_reg |= link->sink.val;
821 ipu_cm_write(ipu, sink_reg, link->sink.reg);
824 spin_unlock_irqrestore(&ipu->lock, flags);
827 EXPORT_SYMBOL_GPL(ipu_fsu_link);
830 * Unlinks source and sink channels in the FSU.
832 int ipu_fsu_unlink(struct ipu_soc *ipu, int src_ch, int sink_ch)
834 const struct fsu_link_info *link;
835 u32 src_reg, sink_reg;
838 link = find_fsu_link_info(src_ch, sink_ch);
842 spin_lock_irqsave(&ipu->lock, flags);
844 if (link->src.mask) {
845 src_reg = ipu_cm_read(ipu, link->src.reg);
846 src_reg &= ~link->src.mask;
847 ipu_cm_write(ipu, src_reg, link->src.reg);
850 if (link->sink.mask) {
851 sink_reg = ipu_cm_read(ipu, link->sink.reg);
852 sink_reg &= ~link->sink.mask;
853 ipu_cm_write(ipu, sink_reg, link->sink.reg);
856 spin_unlock_irqrestore(&ipu->lock, flags);
859 EXPORT_SYMBOL_GPL(ipu_fsu_unlink);
861 /* Link IDMAC channels in the FSU */
862 int ipu_idmac_link(struct ipuv3_channel *src, struct ipuv3_channel *sink)
864 return ipu_fsu_link(src->ipu, src->num, sink->num);
866 EXPORT_SYMBOL_GPL(ipu_idmac_link);
868 /* Unlink IDMAC channels in the FSU */
869 int ipu_idmac_unlink(struct ipuv3_channel *src, struct ipuv3_channel *sink)
871 return ipu_fsu_unlink(src->ipu, src->num, sink->num);
873 EXPORT_SYMBOL_GPL(ipu_idmac_unlink);
877 unsigned long cm_ofs;
878 unsigned long cpmem_ofs;
879 unsigned long srm_ofs;
880 unsigned long tpm_ofs;
881 unsigned long csi0_ofs;
882 unsigned long csi1_ofs;
883 unsigned long ic_ofs;
884 unsigned long disp0_ofs;
885 unsigned long disp1_ofs;
886 unsigned long dc_tmpl_ofs;
887 unsigned long vdi_ofs;
888 enum ipuv3_type type;
891 static struct ipu_devtype ipu_type_imx51 = {
893 .cm_ofs = 0x1e000000,
894 .cpmem_ofs = 0x1f000000,
895 .srm_ofs = 0x1f040000,
896 .tpm_ofs = 0x1f060000,
897 .csi0_ofs = 0x1f030000,
898 .csi1_ofs = 0x1f038000,
899 .ic_ofs = 0x1e020000,
900 .disp0_ofs = 0x1e040000,
901 .disp1_ofs = 0x1e048000,
902 .dc_tmpl_ofs = 0x1f080000,
903 .vdi_ofs = 0x1e068000,
907 static struct ipu_devtype ipu_type_imx53 = {
909 .cm_ofs = 0x06000000,
910 .cpmem_ofs = 0x07000000,
911 .srm_ofs = 0x07040000,
912 .tpm_ofs = 0x07060000,
913 .csi0_ofs = 0x07030000,
914 .csi1_ofs = 0x07038000,
915 .ic_ofs = 0x06020000,
916 .disp0_ofs = 0x06040000,
917 .disp1_ofs = 0x06048000,
918 .dc_tmpl_ofs = 0x07080000,
919 .vdi_ofs = 0x06068000,
923 static struct ipu_devtype ipu_type_imx6q = {
925 .cm_ofs = 0x00200000,
926 .cpmem_ofs = 0x00300000,
927 .srm_ofs = 0x00340000,
928 .tpm_ofs = 0x00360000,
929 .csi0_ofs = 0x00230000,
930 .csi1_ofs = 0x00238000,
931 .ic_ofs = 0x00220000,
932 .disp0_ofs = 0x00240000,
933 .disp1_ofs = 0x00248000,
934 .dc_tmpl_ofs = 0x00380000,
935 .vdi_ofs = 0x00268000,
939 static const struct of_device_id imx_ipu_dt_ids[] = {
940 { .compatible = "fsl,imx51-ipu", .data = &ipu_type_imx51, },
941 { .compatible = "fsl,imx53-ipu", .data = &ipu_type_imx53, },
942 { .compatible = "fsl,imx6q-ipu", .data = &ipu_type_imx6q, },
943 { .compatible = "fsl,imx6qp-ipu", .data = &ipu_type_imx6q, },
946 MODULE_DEVICE_TABLE(of, imx_ipu_dt_ids);
948 static int ipu_submodules_init(struct ipu_soc *ipu,
949 struct platform_device *pdev, unsigned long ipu_base,
954 struct device *dev = &pdev->dev;
955 const struct ipu_devtype *devtype = ipu->devtype;
957 ret = ipu_cpmem_init(ipu, dev, ipu_base + devtype->cpmem_ofs);
963 ret = ipu_csi_init(ipu, dev, 0, ipu_base + devtype->csi0_ofs,
964 IPU_CONF_CSI0_EN, ipu_clk);
970 ret = ipu_csi_init(ipu, dev, 1, ipu_base + devtype->csi1_ofs,
971 IPU_CONF_CSI1_EN, ipu_clk);
977 ret = ipu_ic_init(ipu, dev,
978 ipu_base + devtype->ic_ofs,
979 ipu_base + devtype->tpm_ofs);
985 ret = ipu_vdi_init(ipu, dev, ipu_base + devtype->vdi_ofs,
986 IPU_CONF_VDI_EN | IPU_CONF_ISP_EN |
993 ret = ipu_image_convert_init(ipu, dev);
995 unit = "image_convert";
996 goto err_image_convert;
999 ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs,
1000 IPU_CONF_DI0_EN, ipu_clk);
1006 ret = ipu_di_init(ipu, dev, 1, ipu_base + devtype->disp1_ofs,
1007 IPU_CONF_DI1_EN, ipu_clk);
1013 ret = ipu_dc_init(ipu, dev, ipu_base + devtype->cm_ofs +
1014 IPU_CM_DC_REG_OFS, ipu_base + devtype->dc_tmpl_ofs);
1016 unit = "dc_template";
1020 ret = ipu_dmfc_init(ipu, dev, ipu_base +
1021 devtype->cm_ofs + IPU_CM_DMFC_REG_OFS, ipu_clk);
1027 ret = ipu_dp_init(ipu, dev, ipu_base + devtype->srm_ofs);
1033 ret = ipu_smfc_init(ipu, dev, ipu_base +
1034 devtype->cm_ofs + IPU_CM_SMFC_REG_OFS);
1049 ipu_di_exit(ipu, 1);
1051 ipu_di_exit(ipu, 0);
1053 ipu_image_convert_exit(ipu);
1059 ipu_csi_exit(ipu, 1);
1061 ipu_csi_exit(ipu, 0);
1063 ipu_cpmem_exit(ipu);
1065 dev_err(&pdev->dev, "init %s failed with %d\n", unit, ret);
1069 static void ipu_irq_handle(struct ipu_soc *ipu, const int *regs, int num_regs)
1071 unsigned long status;
1074 for (i = 0; i < num_regs; i++) {
1076 status = ipu_cm_read(ipu, IPU_INT_STAT(regs[i]));
1077 status &= ipu_cm_read(ipu, IPU_INT_CTRL(regs[i]));
1079 for_each_set_bit(bit, &status, 32) {
1080 irq = irq_linear_revmap(ipu->domain,
1081 regs[i] * 32 + bit);
1083 generic_handle_irq(irq);
1088 static void ipu_irq_handler(struct irq_desc *desc)
1090 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
1091 struct irq_chip *chip = irq_desc_get_chip(desc);
1092 const int int_reg[] = { 0, 1, 2, 3, 10, 11, 12, 13, 14};
1094 chained_irq_enter(chip, desc);
1096 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
1098 chained_irq_exit(chip, desc);
1101 static void ipu_err_irq_handler(struct irq_desc *desc)
1103 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
1104 struct irq_chip *chip = irq_desc_get_chip(desc);
1105 const int int_reg[] = { 4, 5, 8, 9};
1107 chained_irq_enter(chip, desc);
1109 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
1111 chained_irq_exit(chip, desc);
1114 int ipu_map_irq(struct ipu_soc *ipu, int irq)
1118 virq = irq_linear_revmap(ipu->domain, irq);
1120 virq = irq_create_mapping(ipu->domain, irq);
1124 EXPORT_SYMBOL_GPL(ipu_map_irq);
1126 int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel,
1127 enum ipu_channel_irq irq_type)
1129 return ipu_map_irq(ipu, irq_type + channel->num);
1131 EXPORT_SYMBOL_GPL(ipu_idmac_channel_irq);
1133 static void ipu_submodules_exit(struct ipu_soc *ipu)
1139 ipu_di_exit(ipu, 1);
1140 ipu_di_exit(ipu, 0);
1141 ipu_image_convert_exit(ipu);
1144 ipu_csi_exit(ipu, 1);
1145 ipu_csi_exit(ipu, 0);
1146 ipu_cpmem_exit(ipu);
1149 static int platform_remove_devices_fn(struct device *dev, void *unused)
1151 struct platform_device *pdev = to_platform_device(dev);
1153 platform_device_unregister(pdev);
1158 static void platform_device_unregister_children(struct platform_device *pdev)
1160 device_for_each_child(&pdev->dev, NULL, platform_remove_devices_fn);
1163 struct ipu_platform_reg {
1164 struct ipu_client_platformdata pdata;
1168 /* These must be in the order of the corresponding device tree port nodes */
1169 static struct ipu_platform_reg client_reg[] = {
1173 .dma[0] = IPUV3_CHANNEL_CSI0,
1176 .name = "imx-ipuv3-csi",
1180 .dma[0] = IPUV3_CHANNEL_CSI1,
1183 .name = "imx-ipuv3-csi",
1188 .dp = IPU_DP_FLOW_SYNC_BG,
1189 .dma[0] = IPUV3_CHANNEL_MEM_BG_SYNC,
1190 .dma[1] = IPUV3_CHANNEL_MEM_FG_SYNC,
1192 .name = "imx-ipuv3-crtc",
1198 .dma[0] = IPUV3_CHANNEL_MEM_DC_SYNC,
1201 .name = "imx-ipuv3-crtc",
1205 static DEFINE_MUTEX(ipu_client_id_mutex);
1206 static int ipu_client_id;
1208 static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
1210 struct device *dev = ipu->dev;
1214 mutex_lock(&ipu_client_id_mutex);
1216 ipu_client_id += ARRAY_SIZE(client_reg);
1217 mutex_unlock(&ipu_client_id_mutex);
1219 for (i = 0; i < ARRAY_SIZE(client_reg); i++) {
1220 struct ipu_platform_reg *reg = &client_reg[i];
1221 struct platform_device *pdev;
1222 struct device_node *of_node;
1224 /* Associate subdevice with the corresponding port node */
1225 of_node = of_graph_get_port_by_id(dev->of_node, i);
1228 "no port@%d node in %s, not using %s%d\n",
1229 i, dev->of_node->full_name,
1230 (i / 2) ? "DI" : "CSI", i % 2);
1234 pdev = platform_device_alloc(reg->name, id++);
1240 pdev->dev.parent = dev;
1242 reg->pdata.of_node = of_node;
1243 ret = platform_device_add_data(pdev, ®->pdata,
1244 sizeof(reg->pdata));
1246 ret = platform_device_add(pdev);
1248 platform_device_put(pdev);
1256 platform_device_unregister_children(to_platform_device(dev));
1262 static int ipu_irq_init(struct ipu_soc *ipu)
1264 struct irq_chip_generic *gc;
1265 struct irq_chip_type *ct;
1266 unsigned long unused[IPU_NUM_IRQS / 32] = {
1267 0x400100d0, 0xffe000fd,
1268 0x400100d0, 0xffe000fd,
1269 0x400100d0, 0xffe000fd,
1270 0x4077ffff, 0xffe7e1fd,
1271 0x23fffffe, 0x8880fff0,
1272 0xf98fe7d0, 0xfff81fff,
1273 0x400100d0, 0xffe000fd,
1278 ipu->domain = irq_domain_add_linear(ipu->dev->of_node, IPU_NUM_IRQS,
1279 &irq_generic_chip_ops, ipu);
1281 dev_err(ipu->dev, "failed to add irq domain\n");
1285 ret = irq_alloc_domain_generic_chips(ipu->domain, 32, 1, "IPU",
1286 handle_level_irq, 0, 0, 0);
1288 dev_err(ipu->dev, "failed to alloc generic irq chips\n");
1289 irq_domain_remove(ipu->domain);
1293 /* Mask and clear all interrupts */
1294 for (i = 0; i < IPU_NUM_IRQS; i += 32) {
1295 ipu_cm_write(ipu, 0, IPU_INT_CTRL(i / 32));
1296 ipu_cm_write(ipu, ~unused[i / 32], IPU_INT_STAT(i / 32));
1299 for (i = 0; i < IPU_NUM_IRQS; i += 32) {
1300 gc = irq_get_domain_generic_chip(ipu->domain, i);
1301 gc->reg_base = ipu->cm_reg;
1302 gc->unused = unused[i / 32];
1303 ct = gc->chip_types;
1304 ct->chip.irq_ack = irq_gc_ack_set_bit;
1305 ct->chip.irq_mask = irq_gc_mask_clr_bit;
1306 ct->chip.irq_unmask = irq_gc_mask_set_bit;
1307 ct->regs.ack = IPU_INT_STAT(i / 32);
1308 ct->regs.mask = IPU_INT_CTRL(i / 32);
1311 irq_set_chained_handler_and_data(ipu->irq_sync, ipu_irq_handler, ipu);
1312 irq_set_chained_handler_and_data(ipu->irq_err, ipu_err_irq_handler,
1318 static void ipu_irq_exit(struct ipu_soc *ipu)
1322 irq_set_chained_handler_and_data(ipu->irq_err, NULL, NULL);
1323 irq_set_chained_handler_and_data(ipu->irq_sync, NULL, NULL);
1325 /* TODO: remove irq_domain_generic_chips */
1327 for (i = 0; i < IPU_NUM_IRQS; i++) {
1328 irq = irq_linear_revmap(ipu->domain, i);
1330 irq_dispose_mapping(irq);
1333 irq_domain_remove(ipu->domain);
1336 void ipu_dump(struct ipu_soc *ipu)
1340 dev_dbg(ipu->dev, "IPU_CONF = \t0x%08X\n",
1341 ipu_cm_read(ipu, IPU_CONF));
1342 dev_dbg(ipu->dev, "IDMAC_CONF = \t0x%08X\n",
1343 ipu_idmac_read(ipu, IDMAC_CONF));
1344 dev_dbg(ipu->dev, "IDMAC_CHA_EN1 = \t0x%08X\n",
1345 ipu_idmac_read(ipu, IDMAC_CHA_EN(0)));
1346 dev_dbg(ipu->dev, "IDMAC_CHA_EN2 = \t0x%08X\n",
1347 ipu_idmac_read(ipu, IDMAC_CHA_EN(32)));
1348 dev_dbg(ipu->dev, "IDMAC_CHA_PRI1 = \t0x%08X\n",
1349 ipu_idmac_read(ipu, IDMAC_CHA_PRI(0)));
1350 dev_dbg(ipu->dev, "IDMAC_CHA_PRI2 = \t0x%08X\n",
1351 ipu_idmac_read(ipu, IDMAC_CHA_PRI(32)));
1352 dev_dbg(ipu->dev, "IDMAC_BAND_EN1 = \t0x%08X\n",
1353 ipu_idmac_read(ipu, IDMAC_BAND_EN(0)));
1354 dev_dbg(ipu->dev, "IDMAC_BAND_EN2 = \t0x%08X\n",
1355 ipu_idmac_read(ipu, IDMAC_BAND_EN(32)));
1356 dev_dbg(ipu->dev, "IPU_CHA_DB_MODE_SEL0 = \t0x%08X\n",
1357 ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(0)));
1358 dev_dbg(ipu->dev, "IPU_CHA_DB_MODE_SEL1 = \t0x%08X\n",
1359 ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(32)));
1360 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW1 = \t0x%08X\n",
1361 ipu_cm_read(ipu, IPU_FS_PROC_FLOW1));
1362 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW2 = \t0x%08X\n",
1363 ipu_cm_read(ipu, IPU_FS_PROC_FLOW2));
1364 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW3 = \t0x%08X\n",
1365 ipu_cm_read(ipu, IPU_FS_PROC_FLOW3));
1366 dev_dbg(ipu->dev, "IPU_FS_DISP_FLOW1 = \t0x%08X\n",
1367 ipu_cm_read(ipu, IPU_FS_DISP_FLOW1));
1368 for (i = 0; i < 15; i++)
1369 dev_dbg(ipu->dev, "IPU_INT_CTRL(%d) = \t%08X\n", i,
1370 ipu_cm_read(ipu, IPU_INT_CTRL(i)));
1372 EXPORT_SYMBOL_GPL(ipu_dump);
1374 static int ipu_probe(struct platform_device *pdev)
1376 struct device_node *np = pdev->dev.of_node;
1377 struct ipu_soc *ipu;
1378 struct resource *res;
1379 unsigned long ipu_base;
1380 int i, ret, irq_sync, irq_err;
1381 const struct ipu_devtype *devtype;
1383 devtype = of_device_get_match_data(&pdev->dev);
1387 irq_sync = platform_get_irq(pdev, 0);
1388 irq_err = platform_get_irq(pdev, 1);
1389 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1391 dev_dbg(&pdev->dev, "irq_sync: %d irq_err: %d\n",
1394 if (!res || irq_sync < 0 || irq_err < 0)
1397 ipu_base = res->start;
1399 ipu = devm_kzalloc(&pdev->dev, sizeof(*ipu), GFP_KERNEL);
1403 ipu->id = of_alias_get_id(np, "ipu");
1405 if (of_device_is_compatible(np, "fsl,imx6qp-ipu") &&
1406 IS_ENABLED(CONFIG_DRM)) {
1407 ipu->prg_priv = ipu_prg_lookup_by_phandle(&pdev->dev,
1408 "fsl,prg", ipu->id);
1410 return -EPROBE_DEFER;
1413 for (i = 0; i < 64; i++)
1414 ipu->channel[i].ipu = ipu;
1415 ipu->devtype = devtype;
1416 ipu->ipu_type = devtype->type;
1418 spin_lock_init(&ipu->lock);
1419 mutex_init(&ipu->channel_lock);
1421 dev_dbg(&pdev->dev, "cm_reg: 0x%08lx\n",
1422 ipu_base + devtype->cm_ofs);
1423 dev_dbg(&pdev->dev, "idmac: 0x%08lx\n",
1424 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS);
1425 dev_dbg(&pdev->dev, "cpmem: 0x%08lx\n",
1426 ipu_base + devtype->cpmem_ofs);
1427 dev_dbg(&pdev->dev, "csi0: 0x%08lx\n",
1428 ipu_base + devtype->csi0_ofs);
1429 dev_dbg(&pdev->dev, "csi1: 0x%08lx\n",
1430 ipu_base + devtype->csi1_ofs);
1431 dev_dbg(&pdev->dev, "ic: 0x%08lx\n",
1432 ipu_base + devtype->ic_ofs);
1433 dev_dbg(&pdev->dev, "disp0: 0x%08lx\n",
1434 ipu_base + devtype->disp0_ofs);
1435 dev_dbg(&pdev->dev, "disp1: 0x%08lx\n",
1436 ipu_base + devtype->disp1_ofs);
1437 dev_dbg(&pdev->dev, "srm: 0x%08lx\n",
1438 ipu_base + devtype->srm_ofs);
1439 dev_dbg(&pdev->dev, "tpm: 0x%08lx\n",
1440 ipu_base + devtype->tpm_ofs);
1441 dev_dbg(&pdev->dev, "dc: 0x%08lx\n",
1442 ipu_base + devtype->cm_ofs + IPU_CM_DC_REG_OFS);
1443 dev_dbg(&pdev->dev, "ic: 0x%08lx\n",
1444 ipu_base + devtype->cm_ofs + IPU_CM_IC_REG_OFS);
1445 dev_dbg(&pdev->dev, "dmfc: 0x%08lx\n",
1446 ipu_base + devtype->cm_ofs + IPU_CM_DMFC_REG_OFS);
1447 dev_dbg(&pdev->dev, "vdi: 0x%08lx\n",
1448 ipu_base + devtype->vdi_ofs);
1450 ipu->cm_reg = devm_ioremap(&pdev->dev,
1451 ipu_base + devtype->cm_ofs, PAGE_SIZE);
1452 ipu->idmac_reg = devm_ioremap(&pdev->dev,
1453 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS,
1456 if (!ipu->cm_reg || !ipu->idmac_reg)
1459 ipu->clk = devm_clk_get(&pdev->dev, "bus");
1460 if (IS_ERR(ipu->clk)) {
1461 ret = PTR_ERR(ipu->clk);
1462 dev_err(&pdev->dev, "clk_get failed with %d", ret);
1466 platform_set_drvdata(pdev, ipu);
1468 ret = clk_prepare_enable(ipu->clk);
1470 dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret);
1474 ipu->dev = &pdev->dev;
1475 ipu->irq_sync = irq_sync;
1476 ipu->irq_err = irq_err;
1478 ret = device_reset(&pdev->dev);
1480 dev_err(&pdev->dev, "failed to reset: %d\n", ret);
1481 goto out_failed_reset;
1483 ret = ipu_memory_reset(ipu);
1485 goto out_failed_reset;
1487 ret = ipu_irq_init(ipu);
1489 goto out_failed_irq;
1491 /* Set MCU_T to divide MCU access window into 2 */
1492 ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
1495 ret = ipu_submodules_init(ipu, pdev, ipu_base, ipu->clk);
1497 goto failed_submodules_init;
1499 ret = ipu_add_client_devices(ipu, ipu_base);
1501 dev_err(&pdev->dev, "adding client devices failed with %d\n",
1503 goto failed_add_clients;
1506 dev_info(&pdev->dev, "%s probed\n", devtype->name);
1511 ipu_submodules_exit(ipu);
1512 failed_submodules_init:
1516 clk_disable_unprepare(ipu->clk);
1520 static int ipu_remove(struct platform_device *pdev)
1522 struct ipu_soc *ipu = platform_get_drvdata(pdev);
1524 platform_device_unregister_children(pdev);
1525 ipu_submodules_exit(ipu);
1528 clk_disable_unprepare(ipu->clk);
1533 static struct platform_driver imx_ipu_driver = {
1535 .name = "imx-ipuv3",
1536 .of_match_table = imx_ipu_dt_ids,
1539 .remove = ipu_remove,
1542 static struct platform_driver * const drivers[] = {
1543 #if IS_ENABLED(CONFIG_DRM)
1550 static int __init imx_ipu_init(void)
1552 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
1554 module_init(imx_ipu_init);
1556 static void __exit imx_ipu_exit(void)
1558 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
1560 module_exit(imx_ipu_exit);
1562 MODULE_ALIAS("platform:imx-ipuv3");
1563 MODULE_DESCRIPTION("i.MX IPU v3 driver");
1564 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
1565 MODULE_LICENSE("GPL");