2 * SuperH Mobile LCDC Framebuffer
4 * Copyright (c) 2008 Magnus Damm
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
11 #include <linux/atomic.h>
12 #include <linux/backlight.h>
13 #include <linux/clk.h>
14 #include <linux/console.h>
15 #include <linux/ctype.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/delay.h>
18 #include <linux/gpio.h>
19 #include <linux/init.h>
20 #include <linux/interrupt.h>
21 #include <linux/ioctl.h>
22 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/slab.h>
28 #include <linux/videodev2.h>
29 #include <linux/vmalloc.h>
31 #include <video/sh_mobile_lcdc.h>
32 #include <video/sh_mobile_meram.h>
34 #include "sh_mobile_lcdcfb.h"
36 /* ----------------------------------------------------------------------------
37 * Overlay register definitions
41 #define LDBCR_UPC(n) (1 << ((n) + 16))
42 #define LDBCR_UPF(n) (1 << ((n) + 8))
43 #define LDBCR_UPD(n) (1 << ((n) + 0))
44 #define LDBnBSIFR(n) (0xb20 + (n) * 0x20 + 0x00)
45 #define LDBBSIFR_EN (1 << 31)
46 #define LDBBSIFR_VS (1 << 29)
47 #define LDBBSIFR_BRSEL (1 << 28)
48 #define LDBBSIFR_MX (1 << 27)
49 #define LDBBSIFR_MY (1 << 26)
50 #define LDBBSIFR_CV3 (3 << 24)
51 #define LDBBSIFR_CV2 (2 << 24)
52 #define LDBBSIFR_CV1 (1 << 24)
53 #define LDBBSIFR_CV0 (0 << 24)
54 #define LDBBSIFR_CV_MASK (3 << 24)
55 #define LDBBSIFR_LAY_MASK (0xff << 16)
56 #define LDBBSIFR_LAY_SHIFT 16
57 #define LDBBSIFR_ROP3_MASK (0xff << 16)
58 #define LDBBSIFR_ROP3_SHIFT 16
59 #define LDBBSIFR_AL_PL8 (3 << 14)
60 #define LDBBSIFR_AL_PL1 (2 << 14)
61 #define LDBBSIFR_AL_PK (1 << 14)
62 #define LDBBSIFR_AL_1 (0 << 14)
63 #define LDBBSIFR_AL_MASK (3 << 14)
64 #define LDBBSIFR_SWPL (1 << 10)
65 #define LDBBSIFR_SWPW (1 << 9)
66 #define LDBBSIFR_SWPB (1 << 8)
67 #define LDBBSIFR_RY (1 << 7)
68 #define LDBBSIFR_CHRR_420 (2 << 0)
69 #define LDBBSIFR_CHRR_422 (1 << 0)
70 #define LDBBSIFR_CHRR_444 (0 << 0)
71 #define LDBBSIFR_RPKF_ARGB32 (0x00 << 0)
72 #define LDBBSIFR_RPKF_RGB16 (0x03 << 0)
73 #define LDBBSIFR_RPKF_RGB24 (0x0b << 0)
74 #define LDBBSIFR_RPKF_MASK (0x1f << 0)
75 #define LDBnBSSZR(n) (0xb20 + (n) * 0x20 + 0x04)
76 #define LDBBSSZR_BVSS_MASK (0xfff << 16)
77 #define LDBBSSZR_BVSS_SHIFT 16
78 #define LDBBSSZR_BHSS_MASK (0xfff << 0)
79 #define LDBBSSZR_BHSS_SHIFT 0
80 #define LDBnBLOCR(n) (0xb20 + (n) * 0x20 + 0x08)
81 #define LDBBLOCR_CVLC_MASK (0xfff << 16)
82 #define LDBBLOCR_CVLC_SHIFT 16
83 #define LDBBLOCR_CHLC_MASK (0xfff << 0)
84 #define LDBBLOCR_CHLC_SHIFT 0
85 #define LDBnBSMWR(n) (0xb20 + (n) * 0x20 + 0x0c)
86 #define LDBBSMWR_BSMWA_MASK (0xffff << 16)
87 #define LDBBSMWR_BSMWA_SHIFT 16
88 #define LDBBSMWR_BSMW_MASK (0xffff << 0)
89 #define LDBBSMWR_BSMW_SHIFT 0
90 #define LDBnBSAYR(n) (0xb20 + (n) * 0x20 + 0x10)
91 #define LDBBSAYR_FG1A_MASK (0xff << 24)
92 #define LDBBSAYR_FG1A_SHIFT 24
93 #define LDBBSAYR_FG1R_MASK (0xff << 16)
94 #define LDBBSAYR_FG1R_SHIFT 16
95 #define LDBBSAYR_FG1G_MASK (0xff << 8)
96 #define LDBBSAYR_FG1G_SHIFT 8
97 #define LDBBSAYR_FG1B_MASK (0xff << 0)
98 #define LDBBSAYR_FG1B_SHIFT 0
99 #define LDBnBSACR(n) (0xb20 + (n) * 0x20 + 0x14)
100 #define LDBBSACR_FG2A_MASK (0xff << 24)
101 #define LDBBSACR_FG2A_SHIFT 24
102 #define LDBBSACR_FG2R_MASK (0xff << 16)
103 #define LDBBSACR_FG2R_SHIFT 16
104 #define LDBBSACR_FG2G_MASK (0xff << 8)
105 #define LDBBSACR_FG2G_SHIFT 8
106 #define LDBBSACR_FG2B_MASK (0xff << 0)
107 #define LDBBSACR_FG2B_SHIFT 0
108 #define LDBnBSAAR(n) (0xb20 + (n) * 0x20 + 0x18)
109 #define LDBBSAAR_AP_MASK (0xff << 24)
110 #define LDBBSAAR_AP_SHIFT 24
111 #define LDBBSAAR_R_MASK (0xff << 16)
112 #define LDBBSAAR_R_SHIFT 16
113 #define LDBBSAAR_GY_MASK (0xff << 8)
114 #define LDBBSAAR_GY_SHIFT 8
115 #define LDBBSAAR_B_MASK (0xff << 0)
116 #define LDBBSAAR_B_SHIFT 0
117 #define LDBnBPPCR(n) (0xb20 + (n) * 0x20 + 0x1c)
118 #define LDBBPPCR_AP_MASK (0xff << 24)
119 #define LDBBPPCR_AP_SHIFT 24
120 #define LDBBPPCR_R_MASK (0xff << 16)
121 #define LDBBPPCR_R_SHIFT 16
122 #define LDBBPPCR_GY_MASK (0xff << 8)
123 #define LDBBPPCR_GY_SHIFT 8
124 #define LDBBPPCR_B_MASK (0xff << 0)
125 #define LDBBPPCR_B_SHIFT 0
126 #define LDBnBBGCL(n) (0xb10 + (n) * 0x04)
127 #define LDBBBGCL_BGA_MASK (0xff << 24)
128 #define LDBBBGCL_BGA_SHIFT 24
129 #define LDBBBGCL_BGR_MASK (0xff << 16)
130 #define LDBBBGCL_BGR_SHIFT 16
131 #define LDBBBGCL_BGG_MASK (0xff << 8)
132 #define LDBBBGCL_BGG_SHIFT 8
133 #define LDBBBGCL_BGB_MASK (0xff << 0)
134 #define LDBBBGCL_BGB_SHIFT 0
136 #define SIDE_B_OFFSET 0x1000
137 #define MIRROR_OFFSET 0x2000
139 #define MAX_XRES 1920
140 #define MAX_YRES 1080
142 enum sh_mobile_lcdc_overlay_mode {
148 * struct sh_mobile_lcdc_overlay - LCDC display overlay
150 * @channel: LCDC channel this overlay belongs to
151 * @cfg: Overlay configuration
152 * @info: Frame buffer device
153 * @index: Overlay index (0-3)
154 * @base: Overlay registers base address
155 * @enabled: True if the overlay is enabled
156 * @mode: Overlay blending mode (alpha blend or ROP3)
157 * @alpha: Global alpha blending value (0-255, for alpha blending mode)
158 * @rop3: Raster operation (for ROP3 mode)
159 * @fb_mem: Frame buffer virtual memory address
160 * @fb_size: Frame buffer size in bytes
161 * @dma_handle: Frame buffer DMA address
162 * @base_addr_y: Overlay base address (RGB or luma component)
163 * @base_addr_c: Overlay base address (chroma component)
164 * @pan_y_offset: Panning linear offset in bytes (luma component)
165 * @format: Current pixelf format
166 * @xres: Horizontal visible resolution
167 * @xres_virtual: Horizontal total resolution
168 * @yres: Vertical visible resolution
169 * @yres_virtual: Vertical total resolution
170 * @pitch: Overlay line pitch
171 * @pos_x: Horizontal overlay position
172 * @pos_y: Vertical overlay position
174 struct sh_mobile_lcdc_overlay {
175 struct sh_mobile_lcdc_chan *channel;
177 const struct sh_mobile_lcdc_overlay_cfg *cfg;
178 struct fb_info *info;
184 enum sh_mobile_lcdc_overlay_mode mode;
189 unsigned long fb_size;
191 dma_addr_t dma_handle;
192 unsigned long base_addr_y;
193 unsigned long base_addr_c;
194 unsigned long pan_y_offset;
196 const struct sh_mobile_lcdc_format_info *format;
198 unsigned int xres_virtual;
200 unsigned int yres_virtual;
206 struct sh_mobile_lcdc_priv {
212 unsigned long lddckr;
214 struct sh_mobile_lcdc_chan ch[2];
215 struct sh_mobile_lcdc_overlay overlays[4];
217 struct notifier_block notifier;
219 int forced_fourcc; /* 2 channel LCDC must share fourcc setting */
220 struct sh_mobile_meram_info *meram_dev;
223 /* -----------------------------------------------------------------------------
227 static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
228 [LDDCKPAT1R] = 0x400,
229 [LDDCKPAT2R] = 0x404,
247 static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = {
248 [LDDCKPAT1R] = 0x408,
249 [LDDCKPAT2R] = 0x40c,
265 static bool banked(int reg_nr)
285 static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan)
287 return chan->cfg->chan == LCDC_CHAN_SUBLCD;
290 static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan,
291 int reg_nr, unsigned long data)
293 iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]);
295 iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
299 static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan,
300 int reg_nr, unsigned long data)
302 iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] +
306 static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan,
309 return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]);
312 static void lcdc_write_overlay(struct sh_mobile_lcdc_overlay *ovl,
313 int reg, unsigned long data)
315 iowrite32(data, ovl->channel->lcdc->base + reg);
316 iowrite32(data, ovl->channel->lcdc->base + reg + SIDE_B_OFFSET);
319 static void lcdc_write(struct sh_mobile_lcdc_priv *priv,
320 unsigned long reg_offs, unsigned long data)
322 iowrite32(data, priv->base + reg_offs);
325 static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv,
326 unsigned long reg_offs)
328 return ioread32(priv->base + reg_offs);
331 static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv,
332 unsigned long reg_offs,
333 unsigned long mask, unsigned long until)
335 while ((lcdc_read(priv, reg_offs) & mask) != until)
339 /* -----------------------------------------------------------------------------
343 static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv)
345 if (atomic_inc_and_test(&priv->hw_usecnt)) {
347 clk_enable(priv->dot_clk);
348 pm_runtime_get_sync(priv->dev);
349 if (priv->meram_dev && priv->meram_dev->pdev)
350 pm_runtime_get_sync(&priv->meram_dev->pdev->dev);
354 static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv)
356 if (atomic_sub_return(1, &priv->hw_usecnt) == -1) {
357 if (priv->meram_dev && priv->meram_dev->pdev)
358 pm_runtime_put_sync(&priv->meram_dev->pdev->dev);
359 pm_runtime_put(priv->dev);
361 clk_disable(priv->dot_clk);
365 static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv,
371 switch (clock_source) {
374 priv->lddckr = LDDCKR_ICKSEL_BUS;
376 case LCDC_CLK_PERIPHERAL:
377 str = "peripheral_clk";
378 priv->lddckr = LDDCKR_ICKSEL_MIPI;
380 case LCDC_CLK_EXTERNAL:
382 priv->lddckr = LDDCKR_ICKSEL_HDMI;
391 clk = clk_get(priv->dev, str);
393 dev_err(priv->dev, "cannot get dot clock %s\n", str);
401 /* -----------------------------------------------------------------------------
402 * Display, panel and deferred I/O
405 static void lcdc_sys_write_index(void *handle, unsigned long data)
407 struct sh_mobile_lcdc_chan *ch = handle;
409 lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT);
410 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
411 lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
412 (lcdc_chan_is_sublcd(ch) ? 2 : 0));
413 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
416 static void lcdc_sys_write_data(void *handle, unsigned long data)
418 struct sh_mobile_lcdc_chan *ch = handle;
420 lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW);
421 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
422 lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA |
423 (lcdc_chan_is_sublcd(ch) ? 2 : 0));
424 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
427 static unsigned long lcdc_sys_read_data(void *handle)
429 struct sh_mobile_lcdc_chan *ch = handle;
431 lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR);
432 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
433 lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA |
434 (lcdc_chan_is_sublcd(ch) ? 2 : 0));
436 lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0);
438 return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK;
441 static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = {
442 lcdc_sys_write_index,
447 static int sh_mobile_lcdc_sginit(struct fb_info *info,
448 struct list_head *pagelist)
450 struct sh_mobile_lcdc_chan *ch = info->par;
451 unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT;
455 sg_init_table(ch->sglist, nr_pages_max);
457 list_for_each_entry(page, pagelist, lru)
458 sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0);
463 static void sh_mobile_lcdc_deferred_io(struct fb_info *info,
464 struct list_head *pagelist)
466 struct sh_mobile_lcdc_chan *ch = info->par;
467 const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
469 /* enable clocks before accessing hardware */
470 sh_mobile_lcdc_clk_on(ch->lcdc);
473 * It's possible to get here without anything on the pagelist via
474 * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync()
475 * invocation. In the former case, the acceleration routines are
476 * stepped in to when using the framebuffer console causing the
477 * workqueue to be scheduled without any dirty pages on the list.
479 * Despite this, a panel update is still needed given that the
480 * acceleration routines have their own methods for writing in
481 * that still need to be updated.
483 * The fsync() and empty pagelist case could be optimized for,
484 * but we don't bother, as any application exhibiting such
485 * behaviour is fundamentally broken anyways.
487 if (!list_empty(pagelist)) {
488 unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist);
490 /* trigger panel update */
491 dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE);
492 if (panel->start_transfer)
493 panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
494 lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
495 dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages,
498 if (panel->start_transfer)
499 panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops);
500 lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG);
504 static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info)
506 struct fb_deferred_io *fbdefio = info->fbdefio;
509 schedule_delayed_work(&info->deferred_work, fbdefio->delay);
512 static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch)
514 const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
519 ret = ch->tx_dev->ops->display_on(ch->tx_dev);
523 if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED)
524 ch->info->state = FBINFO_STATE_SUSPENDED;
527 /* HDMI must be enabled before LCDC configuration */
528 if (panel->display_on)
532 static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch)
534 const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg;
536 if (panel->display_off)
537 panel->display_off();
540 ch->tx_dev->ops->display_off(ch->tx_dev);
544 sh_mobile_lcdc_must_reconfigure(struct sh_mobile_lcdc_chan *ch,
545 const struct fb_videomode *new_mode)
547 dev_dbg(ch->info->dev, "Old %ux%u, new %ux%u\n",
548 ch->display.mode.xres, ch->display.mode.yres,
549 new_mode->xres, new_mode->yres);
551 /* It can be a different monitor with an equal video-mode */
552 if (fb_mode_is_equal(&ch->display.mode, new_mode))
555 dev_dbg(ch->info->dev, "Switching %u -> %u lines\n",
556 ch->display.mode.yres, new_mode->yres);
557 ch->display.mode = *new_mode;
562 static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
563 struct fb_info *info);
565 static int sh_mobile_lcdc_display_notify(struct sh_mobile_lcdc_chan *ch,
566 enum sh_mobile_lcdc_entity_event event,
567 const struct fb_videomode *mode,
568 const struct fb_monspecs *monspec)
570 struct fb_info *info = ch->info;
571 struct fb_var_screeninfo var;
575 case SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT:
577 if (lock_fb_info(info)) {
580 ch->display.width = monspec->max_x * 10;
581 ch->display.height = monspec->max_y * 10;
583 if (!sh_mobile_lcdc_must_reconfigure(ch, mode) &&
584 info->state == FBINFO_STATE_RUNNING) {
585 /* First activation with the default monitor.
586 * Just turn on, if we run a resume here, the
589 info->var.width = ch->display.width;
590 info->var.height = ch->display.height;
591 sh_mobile_lcdc_display_on(ch);
593 /* New monitor or have to wake up */
594 fb_set_suspend(info, 0);
598 unlock_fb_info(info);
602 case SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT:
603 /* HDMI disconnect */
604 if (lock_fb_info(info)) {
606 fb_set_suspend(info, 1);
608 unlock_fb_info(info);
612 case SH_MOBILE_LCDC_EVENT_DISPLAY_MODE:
613 /* Validate a proposed new mode */
614 fb_videomode_to_var(&var, mode);
615 var.bits_per_pixel = info->var.bits_per_pixel;
616 var.grayscale = info->var.grayscale;
617 ret = sh_mobile_lcdc_check_var(&var, info);
624 /* -----------------------------------------------------------------------------
628 struct sh_mobile_lcdc_format_info {
635 static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = {
637 .fourcc = V4L2_PIX_FMT_RGB565,
640 .lddfr = LDDFR_PKF_RGB16,
642 .fourcc = V4L2_PIX_FMT_BGR24,
645 .lddfr = LDDFR_PKF_RGB24,
647 .fourcc = V4L2_PIX_FMT_BGR32,
650 .lddfr = LDDFR_PKF_ARGB32,
652 .fourcc = V4L2_PIX_FMT_NV12,
655 .lddfr = LDDFR_CC | LDDFR_YF_420,
657 .fourcc = V4L2_PIX_FMT_NV21,
660 .lddfr = LDDFR_CC | LDDFR_YF_420,
662 .fourcc = V4L2_PIX_FMT_NV16,
665 .lddfr = LDDFR_CC | LDDFR_YF_422,
667 .fourcc = V4L2_PIX_FMT_NV61,
670 .lddfr = LDDFR_CC | LDDFR_YF_422,
672 .fourcc = V4L2_PIX_FMT_NV24,
675 .lddfr = LDDFR_CC | LDDFR_YF_444,
677 .fourcc = V4L2_PIX_FMT_NV42,
680 .lddfr = LDDFR_CC | LDDFR_YF_444,
684 static const struct sh_mobile_lcdc_format_info *
685 sh_mobile_format_info(u32 fourcc)
689 for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) {
690 if (sh_mobile_format_infos[i].fourcc == fourcc)
691 return &sh_mobile_format_infos[i];
697 static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var)
699 if (var->grayscale > 1)
700 return var->grayscale;
702 switch (var->bits_per_pixel) {
704 return V4L2_PIX_FMT_RGB565;
706 return V4L2_PIX_FMT_BGR24;
708 return V4L2_PIX_FMT_BGR32;
714 static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var)
716 return var->grayscale > 1;
719 /* -----------------------------------------------------------------------------
720 * Start, stop and IRQ
723 static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data)
725 struct sh_mobile_lcdc_priv *priv = data;
726 struct sh_mobile_lcdc_chan *ch;
727 unsigned long ldintr;
731 /* Acknowledge interrupts and disable further VSYNC End IRQs. */
732 ldintr = lcdc_read(priv, _LDINTR);
733 lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE);
735 /* figure out if this interrupt is for main or sub lcd */
736 is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0;
738 /* wake up channel and disable clocks */
739 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
746 if (ldintr & LDINTR_FS) {
747 if (is_sub == lcdc_chan_is_sublcd(ch)) {
749 wake_up(&ch->frame_end_wait);
751 sh_mobile_lcdc_clk_off(priv);
756 if (ldintr & LDINTR_VES)
757 complete(&ch->vsync_completion);
763 static int sh_mobile_lcdc_wait_for_vsync(struct sh_mobile_lcdc_chan *ch)
765 unsigned long ldintr;
768 /* Enable VSync End interrupt and be careful not to acknowledge any
771 ldintr = lcdc_read(ch->lcdc, _LDINTR);
772 ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK;
773 lcdc_write(ch->lcdc, _LDINTR, ldintr);
775 ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion,
776 msecs_to_jiffies(100));
783 static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
786 unsigned long tmp = lcdc_read(priv, _LDCNT2R);
789 /* start or stop the lcdc */
791 lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO);
793 lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO);
795 /* wait until power is applied/stopped on all channels */
796 for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
797 if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled)
799 tmp = lcdc_read_chan(&priv->ch[k], LDPMR)
801 if (start && tmp == LDPMR_LPS)
803 if (!start && tmp == 0)
809 lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */
812 static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
814 const struct fb_var_screeninfo *var = &ch->info->var;
815 const struct fb_videomode *mode = &ch->display.mode;
816 unsigned long h_total, hsync_pos, display_h_total;
819 tmp = ch->ldmt1r_value;
820 tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL;
821 tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL;
822 tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0;
823 tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0;
824 tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0;
825 tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0;
826 tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0;
827 lcdc_write_chan(ch, LDMT1R, tmp);
830 lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r);
831 lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r);
833 /* horizontal configuration */
834 h_total = mode->xres + mode->hsync_len + mode->left_margin
835 + mode->right_margin;
836 tmp = h_total / 8; /* HTCN */
837 tmp |= (min(mode->xres, ch->xres) / 8) << 16; /* HDCN */
838 lcdc_write_chan(ch, LDHCNR, tmp);
840 hsync_pos = mode->xres + mode->right_margin;
841 tmp = hsync_pos / 8; /* HSYNP */
842 tmp |= (mode->hsync_len / 8) << 16; /* HSYNW */
843 lcdc_write_chan(ch, LDHSYNR, tmp);
845 /* vertical configuration */
846 tmp = mode->yres + mode->vsync_len + mode->upper_margin
847 + mode->lower_margin; /* VTLN */
848 tmp |= min(mode->yres, ch->yres) << 16; /* VDLN */
849 lcdc_write_chan(ch, LDVLNR, tmp);
851 tmp = mode->yres + mode->lower_margin; /* VSYNP */
852 tmp |= mode->vsync_len << 16; /* VSYNW */
853 lcdc_write_chan(ch, LDVSYNR, tmp);
855 /* Adjust horizontal synchronisation for HDMI */
856 display_h_total = mode->xres + mode->hsync_len + mode->left_margin
857 + mode->right_margin;
858 tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16)
859 | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7);
860 lcdc_write_chan(ch, LDHAJR, tmp);
861 lcdc_write_chan_mirror(ch, LDHAJR, tmp);
864 static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl)
869 lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
870 lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), 0);
871 lcdc_write(ovl->channel->lcdc, LDBCR,
872 LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
876 ovl->base_addr_y = ovl->dma_handle;
877 ovl->base_addr_c = ovl->dma_handle
878 + ovl->xres_virtual * ovl->yres_virtual;
881 case LCDC_OVERLAY_BLEND:
882 format = LDBBSIFR_EN | (ovl->alpha << LDBBSIFR_LAY_SHIFT);
885 case LCDC_OVERLAY_ROP3:
886 format = LDBBSIFR_EN | LDBBSIFR_BRSEL
887 | (ovl->rop3 << LDBBSIFR_ROP3_SHIFT);
891 switch (ovl->format->fourcc) {
892 case V4L2_PIX_FMT_RGB565:
893 case V4L2_PIX_FMT_NV21:
894 case V4L2_PIX_FMT_NV61:
895 case V4L2_PIX_FMT_NV42:
896 format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW;
898 case V4L2_PIX_FMT_BGR24:
899 case V4L2_PIX_FMT_NV12:
900 case V4L2_PIX_FMT_NV16:
901 case V4L2_PIX_FMT_NV24:
902 format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB;
904 case V4L2_PIX_FMT_BGR32:
906 format |= LDBBSIFR_SWPL;
910 switch (ovl->format->fourcc) {
911 case V4L2_PIX_FMT_RGB565:
912 format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16;
914 case V4L2_PIX_FMT_BGR24:
915 format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24;
917 case V4L2_PIX_FMT_BGR32:
918 format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32;
920 case V4L2_PIX_FMT_NV12:
921 case V4L2_PIX_FMT_NV21:
922 format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420;
924 case V4L2_PIX_FMT_NV16:
925 case V4L2_PIX_FMT_NV61:
926 format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422;
928 case V4L2_PIX_FMT_NV24:
929 case V4L2_PIX_FMT_NV42:
930 format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444;
934 lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
936 lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), format);
938 lcdc_write_overlay(ovl, LDBnBSSZR(ovl->index),
939 (ovl->yres << LDBBSSZR_BVSS_SHIFT) |
940 (ovl->xres << LDBBSSZR_BHSS_SHIFT));
941 lcdc_write_overlay(ovl, LDBnBLOCR(ovl->index),
942 (ovl->pos_y << LDBBLOCR_CVLC_SHIFT) |
943 (ovl->pos_x << LDBBLOCR_CHLC_SHIFT));
944 lcdc_write_overlay(ovl, LDBnBSMWR(ovl->index),
945 ovl->pitch << LDBBSMWR_BSMW_SHIFT);
947 lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y);
948 lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c);
950 lcdc_write(ovl->channel->lcdc, LDBCR,
951 LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
955 * __sh_mobile_lcdc_start - Configure and start the LCDC
958 * Configure all enabled channels and start the LCDC device. All external
959 * devices (clocks, MERAM, panels, ...) are not touched by this function.
961 static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
963 struct sh_mobile_lcdc_chan *ch;
967 /* Enable LCDC channels. Read data from external memory, avoid using the
970 lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled);
972 /* Stop the LCDC first and disable all interrupts. */
973 sh_mobile_lcdc_start_stop(priv, 0);
974 lcdc_write(priv, _LDINTR, 0);
976 /* Configure power supply, dot clocks and start them. */
978 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
984 lcdc_write_chan(ch, LDPMR, 0);
986 m = ch->cfg->clock_divider;
990 /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
993 lcdc_write_chan(ch, LDDCKPAT1R, 0);
994 lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1);
998 tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
1001 lcdc_write(priv, _LDDCKR, tmp);
1002 lcdc_write(priv, _LDDCKSTPR, 0);
1003 lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0);
1005 /* Setup geometry, format, frame buffer memory and operation mode. */
1006 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1011 sh_mobile_lcdc_geometry(ch);
1013 tmp = ch->format->lddfr;
1015 if (ch->format->yuv) {
1016 switch (ch->colorspace) {
1017 case V4L2_COLORSPACE_REC709:
1020 case V4L2_COLORSPACE_JPEG:
1026 lcdc_write_chan(ch, LDDFR, tmp);
1027 lcdc_write_chan(ch, LDMLSR, ch->line_size);
1028 lcdc_write_chan(ch, LDSA1R, ch->base_addr_y);
1029 if (ch->format->yuv)
1030 lcdc_write_chan(ch, LDSA2R, ch->base_addr_c);
1032 /* When using deferred I/O mode, configure the LCDC for one-shot
1033 * operation and enable the frame end interrupt. Otherwise use
1034 * continuous read mode.
1036 if (ch->ldmt1r_value & LDMT1R_IFM &&
1037 ch->cfg->sys_bus_cfg.deferred_io_msec) {
1038 lcdc_write_chan(ch, LDSM1R, LDSM1R_OS);
1039 lcdc_write(priv, _LDINTR, LDINTR_FE);
1041 lcdc_write_chan(ch, LDSM1R, 0);
1045 /* Word and long word swap. */
1046 switch (priv->ch[0].format->fourcc) {
1047 case V4L2_PIX_FMT_RGB565:
1048 case V4L2_PIX_FMT_NV21:
1049 case V4L2_PIX_FMT_NV61:
1050 case V4L2_PIX_FMT_NV42:
1051 tmp = LDDDSR_LS | LDDDSR_WS;
1053 case V4L2_PIX_FMT_BGR24:
1054 case V4L2_PIX_FMT_NV12:
1055 case V4L2_PIX_FMT_NV16:
1056 case V4L2_PIX_FMT_NV24:
1057 tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS;
1059 case V4L2_PIX_FMT_BGR32:
1064 lcdc_write(priv, _LDDDSR, tmp);
1066 /* Enable the display output. */
1067 lcdc_write(priv, _LDCNT1R, LDCNT1R_DE);
1068 sh_mobile_lcdc_start_stop(priv, 1);
1072 static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
1074 struct sh_mobile_meram_info *mdev = priv->meram_dev;
1075 struct sh_mobile_lcdc_chan *ch;
1080 /* enable clocks before accessing the hardware */
1081 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1082 if (priv->ch[k].enabled)
1083 sh_mobile_lcdc_clk_on(priv);
1087 lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR);
1088 lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0);
1090 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1091 const struct sh_mobile_lcdc_panel_cfg *panel;
1097 panel = &ch->cfg->panel_cfg;
1098 if (panel->setup_sys) {
1099 ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops);
1105 /* Compute frame buffer base address and pitch for each channel. */
1106 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1114 ch->base_addr_y = ch->dma_handle;
1115 ch->base_addr_c = ch->dma_handle
1116 + ch->xres_virtual * ch->yres_virtual;
1117 ch->line_size = ch->pitch;
1119 /* Enable MERAM if possible. */
1120 if (mdev == NULL || ch->cfg->meram_cfg == NULL)
1123 /* Free the allocated MERAM cache. */
1125 sh_mobile_meram_cache_free(mdev, ch->cache);
1129 switch (ch->format->fourcc) {
1130 case V4L2_PIX_FMT_NV12:
1131 case V4L2_PIX_FMT_NV21:
1132 case V4L2_PIX_FMT_NV16:
1133 case V4L2_PIX_FMT_NV61:
1134 pixelformat = SH_MOBILE_MERAM_PF_NV;
1136 case V4L2_PIX_FMT_NV24:
1137 case V4L2_PIX_FMT_NV42:
1138 pixelformat = SH_MOBILE_MERAM_PF_NV24;
1140 case V4L2_PIX_FMT_RGB565:
1141 case V4L2_PIX_FMT_BGR24:
1142 case V4L2_PIX_FMT_BGR32:
1144 pixelformat = SH_MOBILE_MERAM_PF_RGB;
1148 cache = sh_mobile_meram_cache_alloc(mdev, ch->cfg->meram_cfg,
1149 ch->pitch, ch->yres, pixelformat,
1151 if (!IS_ERR(cache)) {
1152 sh_mobile_meram_cache_update(mdev, cache,
1153 ch->base_addr_y, ch->base_addr_c,
1154 &ch->base_addr_y, &ch->base_addr_c);
1159 for (k = 0; k < ARRAY_SIZE(priv->overlays); ++k) {
1160 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[k];
1161 sh_mobile_lcdc_overlay_setup(ovl);
1164 /* Start the LCDC. */
1165 __sh_mobile_lcdc_start(priv);
1167 /* Setup deferred I/O, tell the board code to enable the panels, and
1168 * turn backlight on.
1170 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1175 tmp = ch->cfg->sys_bus_cfg.deferred_io_msec;
1176 if (ch->ldmt1r_value & LDMT1R_IFM && tmp) {
1177 ch->defio.deferred_io = sh_mobile_lcdc_deferred_io;
1178 ch->defio.delay = msecs_to_jiffies(tmp);
1179 ch->info->fbdefio = &ch->defio;
1180 fb_deferred_io_init(ch->info);
1183 sh_mobile_lcdc_display_on(ch);
1186 ch->bl->props.power = FB_BLANK_UNBLANK;
1187 backlight_update_status(ch->bl);
1194 static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
1196 struct sh_mobile_lcdc_chan *ch;
1199 /* clean up deferred io and ask board code to disable panel */
1200 for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
1205 /* deferred io mode:
1206 * flush frame, and wait for frame end interrupt
1207 * clean up deferred io and enable clock
1209 if (ch->info && ch->info->fbdefio) {
1211 schedule_delayed_work(&ch->info->deferred_work, 0);
1212 wait_event(ch->frame_end_wait, ch->frame_end);
1213 fb_deferred_io_cleanup(ch->info);
1214 ch->info->fbdefio = NULL;
1215 sh_mobile_lcdc_clk_on(priv);
1219 ch->bl->props.power = FB_BLANK_POWERDOWN;
1220 backlight_update_status(ch->bl);
1223 sh_mobile_lcdc_display_off(ch);
1225 /* Free the MERAM cache. */
1227 sh_mobile_meram_cache_free(priv->meram_dev, ch->cache);
1234 if (priv->started) {
1235 sh_mobile_lcdc_start_stop(priv, 0);
1240 for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
1241 if (priv->ch[k].enabled)
1242 sh_mobile_lcdc_clk_off(priv);
1245 static int __sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
1246 struct fb_info *info)
1248 if (var->xres > MAX_XRES || var->yres > MAX_YRES)
1251 /* Make sure the virtual resolution is at least as big as the visible
1254 if (var->xres_virtual < var->xres)
1255 var->xres_virtual = var->xres;
1256 if (var->yres_virtual < var->yres)
1257 var->yres_virtual = var->yres;
1259 if (sh_mobile_format_is_fourcc(var)) {
1260 const struct sh_mobile_lcdc_format_info *format;
1262 format = sh_mobile_format_info(var->grayscale);
1265 var->bits_per_pixel = format->bpp;
1267 /* Default to RGB and JPEG color-spaces for RGB and YUV formats
1271 var->colorspace = V4L2_COLORSPACE_SRGB;
1272 else if (var->colorspace != V4L2_COLORSPACE_REC709)
1273 var->colorspace = V4L2_COLORSPACE_JPEG;
1275 if (var->bits_per_pixel <= 16) { /* RGB 565 */
1276 var->bits_per_pixel = 16;
1277 var->red.offset = 11;
1278 var->red.length = 5;
1279 var->green.offset = 5;
1280 var->green.length = 6;
1281 var->blue.offset = 0;
1282 var->blue.length = 5;
1283 var->transp.offset = 0;
1284 var->transp.length = 0;
1285 } else if (var->bits_per_pixel <= 24) { /* RGB 888 */
1286 var->bits_per_pixel = 24;
1287 var->red.offset = 16;
1288 var->red.length = 8;
1289 var->green.offset = 8;
1290 var->green.length = 8;
1291 var->blue.offset = 0;
1292 var->blue.length = 8;
1293 var->transp.offset = 0;
1294 var->transp.length = 0;
1295 } else if (var->bits_per_pixel <= 32) { /* RGBA 888 */
1296 var->bits_per_pixel = 32;
1297 var->red.offset = 16;
1298 var->red.length = 8;
1299 var->green.offset = 8;
1300 var->green.length = 8;
1301 var->blue.offset = 0;
1302 var->blue.length = 8;
1303 var->transp.offset = 24;
1304 var->transp.length = 8;
1308 var->red.msb_right = 0;
1309 var->green.msb_right = 0;
1310 var->blue.msb_right = 0;
1311 var->transp.msb_right = 0;
1314 /* Make sure we don't exceed our allocated memory. */
1315 if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 >
1322 /* -----------------------------------------------------------------------------
1323 * Frame buffer operations - Overlays
1327 overlay_alpha_show(struct device *dev, struct device_attribute *attr, char *buf)
1329 struct fb_info *info = dev_get_drvdata(dev);
1330 struct sh_mobile_lcdc_overlay *ovl = info->par;
1332 return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->alpha);
1336 overlay_alpha_store(struct device *dev, struct device_attribute *attr,
1337 const char *buf, size_t count)
1339 struct fb_info *info = dev_get_drvdata(dev);
1340 struct sh_mobile_lcdc_overlay *ovl = info->par;
1344 alpha = simple_strtoul(buf, &endp, 10);
1348 if (endp - buf != count)
1354 if (ovl->alpha != alpha) {
1357 if (ovl->mode == LCDC_OVERLAY_BLEND && ovl->enabled)
1358 sh_mobile_lcdc_overlay_setup(ovl);
1365 overlay_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
1367 struct fb_info *info = dev_get_drvdata(dev);
1368 struct sh_mobile_lcdc_overlay *ovl = info->par;
1370 return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->mode);
1374 overlay_mode_store(struct device *dev, struct device_attribute *attr,
1375 const char *buf, size_t count)
1377 struct fb_info *info = dev_get_drvdata(dev);
1378 struct sh_mobile_lcdc_overlay *ovl = info->par;
1382 mode = simple_strtoul(buf, &endp, 10);
1386 if (endp - buf != count)
1389 if (mode != LCDC_OVERLAY_BLEND && mode != LCDC_OVERLAY_ROP3)
1392 if (ovl->mode != mode) {
1396 sh_mobile_lcdc_overlay_setup(ovl);
1403 overlay_position_show(struct device *dev, struct device_attribute *attr,
1406 struct fb_info *info = dev_get_drvdata(dev);
1407 struct sh_mobile_lcdc_overlay *ovl = info->par;
1409 return scnprintf(buf, PAGE_SIZE, "%d,%d\n", ovl->pos_x, ovl->pos_y);
1413 overlay_position_store(struct device *dev, struct device_attribute *attr,
1414 const char *buf, size_t count)
1416 struct fb_info *info = dev_get_drvdata(dev);
1417 struct sh_mobile_lcdc_overlay *ovl = info->par;
1422 pos_x = simple_strtol(buf, &endp, 10);
1426 pos_y = simple_strtol(endp + 1, &endp, 10);
1430 if (endp - buf != count)
1433 if (ovl->pos_x != pos_x || ovl->pos_y != pos_y) {
1438 sh_mobile_lcdc_overlay_setup(ovl);
1445 overlay_rop3_show(struct device *dev, struct device_attribute *attr, char *buf)
1447 struct fb_info *info = dev_get_drvdata(dev);
1448 struct sh_mobile_lcdc_overlay *ovl = info->par;
1450 return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->rop3);
1454 overlay_rop3_store(struct device *dev, struct device_attribute *attr,
1455 const char *buf, size_t count)
1457 struct fb_info *info = dev_get_drvdata(dev);
1458 struct sh_mobile_lcdc_overlay *ovl = info->par;
1462 rop3 = !!simple_strtoul(buf, &endp, 10);
1466 if (endp - buf != count)
1472 if (ovl->rop3 != rop3) {
1475 if (ovl->mode == LCDC_OVERLAY_ROP3 && ovl->enabled)
1476 sh_mobile_lcdc_overlay_setup(ovl);
1482 static const struct device_attribute overlay_sysfs_attrs[] = {
1483 __ATTR(ovl_alpha, S_IRUGO|S_IWUSR,
1484 overlay_alpha_show, overlay_alpha_store),
1485 __ATTR(ovl_mode, S_IRUGO|S_IWUSR,
1486 overlay_mode_show, overlay_mode_store),
1487 __ATTR(ovl_position, S_IRUGO|S_IWUSR,
1488 overlay_position_show, overlay_position_store),
1489 __ATTR(ovl_rop3, S_IRUGO|S_IWUSR,
1490 overlay_rop3_show, overlay_rop3_store),
1493 static const struct fb_fix_screeninfo sh_mobile_lcdc_overlay_fix = {
1494 .id = "SH Mobile LCDC",
1495 .type = FB_TYPE_PACKED_PIXELS,
1496 .visual = FB_VISUAL_TRUECOLOR,
1497 .accel = FB_ACCEL_NONE,
1501 .capabilities = FB_CAP_FOURCC,
1504 static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var,
1505 struct fb_info *info)
1507 struct sh_mobile_lcdc_overlay *ovl = info->par;
1508 unsigned long base_addr_y;
1509 unsigned long base_addr_c;
1510 unsigned long y_offset;
1511 unsigned long c_offset;
1513 if (!ovl->format->yuv) {
1514 y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset)
1515 * ovl->format->bpp / 8;
1518 unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1;
1519 unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1;
1521 y_offset = var->yoffset * ovl->xres_virtual + var->xoffset;
1522 c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub
1523 + var->xoffset * 2 / xsub;
1526 /* If the Y offset hasn't changed, the C offset hasn't either. There's
1527 * nothing to do in that case.
1529 if (y_offset == ovl->pan_y_offset)
1532 /* Set the source address for the next refresh */
1533 base_addr_y = ovl->dma_handle + y_offset;
1534 base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual
1537 ovl->base_addr_y = base_addr_y;
1538 ovl->base_addr_c = base_addr_c;
1539 ovl->pan_y_offset = y_offset;
1541 lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index));
1543 lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y);
1544 lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c);
1546 lcdc_write(ovl->channel->lcdc, LDBCR,
1547 LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index));
1552 static int sh_mobile_lcdc_overlay_ioctl(struct fb_info *info, unsigned int cmd,
1555 struct sh_mobile_lcdc_overlay *ovl = info->par;
1558 case FBIO_WAITFORVSYNC:
1559 return sh_mobile_lcdc_wait_for_vsync(ovl->channel);
1562 return -ENOIOCTLCMD;
1566 static int sh_mobile_lcdc_overlay_check_var(struct fb_var_screeninfo *var,
1567 struct fb_info *info)
1569 return __sh_mobile_lcdc_check_var(var, info);
1572 static int sh_mobile_lcdc_overlay_set_par(struct fb_info *info)
1574 struct sh_mobile_lcdc_overlay *ovl = info->par;
1577 sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
1579 ovl->xres = info->var.xres;
1580 ovl->xres_virtual = info->var.xres_virtual;
1581 ovl->yres = info->var.yres;
1582 ovl->yres_virtual = info->var.yres_virtual;
1584 if (ovl->format->yuv)
1585 ovl->pitch = info->var.xres_virtual;
1587 ovl->pitch = info->var.xres_virtual * ovl->format->bpp / 8;
1589 sh_mobile_lcdc_overlay_setup(ovl);
1591 info->fix.line_length = ovl->pitch;
1593 if (sh_mobile_format_is_fourcc(&info->var)) {
1594 info->fix.type = FB_TYPE_FOURCC;
1595 info->fix.visual = FB_VISUAL_FOURCC;
1597 info->fix.type = FB_TYPE_PACKED_PIXELS;
1598 info->fix.visual = FB_VISUAL_TRUECOLOR;
1604 /* Overlay blanking. Disable the overlay when blanked. */
1605 static int sh_mobile_lcdc_overlay_blank(int blank, struct fb_info *info)
1607 struct sh_mobile_lcdc_overlay *ovl = info->par;
1609 ovl->enabled = !blank;
1610 sh_mobile_lcdc_overlay_setup(ovl);
1612 /* Prevent the backlight from receiving a blanking event by returning
1619 sh_mobile_lcdc_overlay_mmap(struct fb_info *info, struct vm_area_struct *vma)
1621 struct sh_mobile_lcdc_overlay *ovl = info->par;
1623 return dma_mmap_coherent(ovl->channel->lcdc->dev, vma, ovl->fb_mem,
1624 ovl->dma_handle, ovl->fb_size);
1627 static struct fb_ops sh_mobile_lcdc_overlay_ops = {
1628 .owner = THIS_MODULE,
1629 .fb_read = fb_sys_read,
1630 .fb_write = fb_sys_write,
1631 .fb_fillrect = sys_fillrect,
1632 .fb_copyarea = sys_copyarea,
1633 .fb_imageblit = sys_imageblit,
1634 .fb_blank = sh_mobile_lcdc_overlay_blank,
1635 .fb_pan_display = sh_mobile_lcdc_overlay_pan,
1636 .fb_ioctl = sh_mobile_lcdc_overlay_ioctl,
1637 .fb_check_var = sh_mobile_lcdc_overlay_check_var,
1638 .fb_set_par = sh_mobile_lcdc_overlay_set_par,
1639 .fb_mmap = sh_mobile_lcdc_overlay_mmap,
1643 sh_mobile_lcdc_overlay_fb_unregister(struct sh_mobile_lcdc_overlay *ovl)
1645 struct fb_info *info = ovl->info;
1647 if (info == NULL || info->dev == NULL)
1650 unregister_framebuffer(ovl->info);
1654 sh_mobile_lcdc_overlay_fb_register(struct sh_mobile_lcdc_overlay *ovl)
1656 struct sh_mobile_lcdc_priv *lcdc = ovl->channel->lcdc;
1657 struct fb_info *info = ovl->info;
1664 ret = register_framebuffer(info);
1668 dev_info(lcdc->dev, "registered %s/overlay %u as %dx%d %dbpp.\n",
1669 dev_name(lcdc->dev), ovl->index, info->var.xres,
1670 info->var.yres, info->var.bits_per_pixel);
1672 for (i = 0; i < ARRAY_SIZE(overlay_sysfs_attrs); ++i) {
1673 ret = device_create_file(info->dev, &overlay_sysfs_attrs[i]);
1682 sh_mobile_lcdc_overlay_fb_cleanup(struct sh_mobile_lcdc_overlay *ovl)
1684 struct fb_info *info = ovl->info;
1686 if (info == NULL || info->device == NULL)
1689 framebuffer_release(info);
1693 sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
1695 struct sh_mobile_lcdc_priv *priv = ovl->channel->lcdc;
1696 struct fb_var_screeninfo *var;
1697 struct fb_info *info;
1699 /* Allocate and initialize the frame buffer device. */
1700 info = framebuffer_alloc(0, priv->dev);
1702 dev_err(priv->dev, "unable to allocate fb_info\n");
1708 info->flags = FBINFO_FLAG_DEFAULT;
1709 info->fbops = &sh_mobile_lcdc_overlay_ops;
1710 info->device = priv->dev;
1711 info->screen_base = ovl->fb_mem;
1714 /* Initialize fixed screen information. Restrict pan to 2 lines steps
1715 * for NV12 and NV21.
1717 info->fix = sh_mobile_lcdc_overlay_fix;
1718 snprintf(info->fix.id, sizeof(info->fix.id),
1719 "SH Mobile LCDC Overlay %u", ovl->index);
1720 info->fix.smem_start = ovl->dma_handle;
1721 info->fix.smem_len = ovl->fb_size;
1722 info->fix.line_length = ovl->pitch;
1724 if (ovl->format->yuv)
1725 info->fix.visual = FB_VISUAL_FOURCC;
1727 info->fix.visual = FB_VISUAL_TRUECOLOR;
1729 switch (ovl->format->fourcc) {
1730 case V4L2_PIX_FMT_NV12:
1731 case V4L2_PIX_FMT_NV21:
1732 info->fix.ypanstep = 2;
1733 case V4L2_PIX_FMT_NV16:
1734 case V4L2_PIX_FMT_NV61:
1735 info->fix.xpanstep = 2;
1738 /* Initialize variable screen information. */
1740 memset(var, 0, sizeof(*var));
1741 var->xres = ovl->xres;
1742 var->yres = ovl->yres;
1743 var->xres_virtual = ovl->xres_virtual;
1744 var->yres_virtual = ovl->yres_virtual;
1745 var->activate = FB_ACTIVATE_NOW;
1747 /* Use the legacy API by default for RGB formats, and the FOURCC API
1750 if (!ovl->format->yuv)
1751 var->bits_per_pixel = ovl->format->bpp;
1753 var->grayscale = ovl->format->fourcc;
1755 return sh_mobile_lcdc_overlay_check_var(var, info);
1758 /* -----------------------------------------------------------------------------
1759 * Frame buffer operations - main frame buffer
1762 static int sh_mobile_lcdc_setcolreg(u_int regno,
1763 u_int red, u_int green, u_int blue,
1764 u_int transp, struct fb_info *info)
1766 u32 *palette = info->pseudo_palette;
1768 if (regno >= PALETTE_NR)
1771 /* only FB_VISUAL_TRUECOLOR supported */
1773 red >>= 16 - info->var.red.length;
1774 green >>= 16 - info->var.green.length;
1775 blue >>= 16 - info->var.blue.length;
1776 transp >>= 16 - info->var.transp.length;
1778 palette[regno] = (red << info->var.red.offset) |
1779 (green << info->var.green.offset) |
1780 (blue << info->var.blue.offset) |
1781 (transp << info->var.transp.offset);
1786 static const struct fb_fix_screeninfo sh_mobile_lcdc_fix = {
1787 .id = "SH Mobile LCDC",
1788 .type = FB_TYPE_PACKED_PIXELS,
1789 .visual = FB_VISUAL_TRUECOLOR,
1790 .accel = FB_ACCEL_NONE,
1794 .capabilities = FB_CAP_FOURCC,
1797 static void sh_mobile_lcdc_fillrect(struct fb_info *info,
1798 const struct fb_fillrect *rect)
1800 sys_fillrect(info, rect);
1801 sh_mobile_lcdc_deferred_io_touch(info);
1804 static void sh_mobile_lcdc_copyarea(struct fb_info *info,
1805 const struct fb_copyarea *area)
1807 sys_copyarea(info, area);
1808 sh_mobile_lcdc_deferred_io_touch(info);
1811 static void sh_mobile_lcdc_imageblit(struct fb_info *info,
1812 const struct fb_image *image)
1814 sys_imageblit(info, image);
1815 sh_mobile_lcdc_deferred_io_touch(info);
1818 static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var,
1819 struct fb_info *info)
1821 struct sh_mobile_lcdc_chan *ch = info->par;
1822 struct sh_mobile_lcdc_priv *priv = ch->lcdc;
1823 unsigned long ldrcntr;
1824 unsigned long base_addr_y, base_addr_c;
1825 unsigned long y_offset;
1826 unsigned long c_offset;
1828 if (!ch->format->yuv) {
1829 y_offset = (var->yoffset * ch->xres_virtual + var->xoffset)
1830 * ch->format->bpp / 8;
1833 unsigned int xsub = ch->format->bpp < 24 ? 2 : 1;
1834 unsigned int ysub = ch->format->bpp < 16 ? 2 : 1;
1836 y_offset = var->yoffset * ch->xres_virtual + var->xoffset;
1837 c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub
1838 + var->xoffset * 2 / xsub;
1841 /* If the Y offset hasn't changed, the C offset hasn't either. There's
1842 * nothing to do in that case.
1844 if (y_offset == ch->pan_y_offset)
1847 /* Set the source address for the next refresh */
1848 base_addr_y = ch->dma_handle + y_offset;
1849 base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual
1853 sh_mobile_meram_cache_update(priv->meram_dev, ch->cache,
1854 base_addr_y, base_addr_c,
1855 &base_addr_y, &base_addr_c);
1857 ch->base_addr_y = base_addr_y;
1858 ch->base_addr_c = base_addr_c;
1859 ch->pan_y_offset = y_offset;
1861 lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y);
1862 if (ch->format->yuv)
1863 lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c);
1865 ldrcntr = lcdc_read(priv, _LDRCNTR);
1866 if (lcdc_chan_is_sublcd(ch))
1867 lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS);
1869 lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS);
1872 sh_mobile_lcdc_deferred_io_touch(info);
1877 static int sh_mobile_lcdc_ioctl(struct fb_info *info, unsigned int cmd,
1880 struct sh_mobile_lcdc_chan *ch = info->par;
1884 case FBIO_WAITFORVSYNC:
1885 retval = sh_mobile_lcdc_wait_for_vsync(ch);
1889 retval = -ENOIOCTLCMD;
1895 static void sh_mobile_fb_reconfig(struct fb_info *info)
1897 struct sh_mobile_lcdc_chan *ch = info->par;
1898 struct fb_var_screeninfo var;
1899 struct fb_videomode mode;
1900 struct fb_event event;
1901 int evnt = FB_EVENT_MODE_CHANGE_ALL;
1903 if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par))
1904 /* More framebuffer users are active */
1907 fb_var_to_videomode(&mode, &info->var);
1909 if (fb_mode_is_equal(&ch->display.mode, &mode))
1912 /* Display has been re-plugged, framebuffer is free now, reconfigure */
1914 fb_videomode_to_var(&var, &ch->display.mode);
1915 var.width = ch->display.width;
1916 var.height = ch->display.height;
1917 var.activate = FB_ACTIVATE_NOW;
1919 if (fb_set_var(info, &var) < 0)
1920 /* Couldn't reconfigure, hopefully, can continue as before */
1924 * fb_set_var() calls the notifier change internally, only if
1925 * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a
1926 * user event, we have to call the chain ourselves.
1929 event.data = &ch->display.mode;
1930 fb_notifier_call_chain(evnt, &event);
1934 * Locking: both .fb_release() and .fb_open() are called with info->lock held if
1935 * user == 1, or with console sem held, if user == 0.
1937 static int sh_mobile_lcdc_release(struct fb_info *info, int user)
1939 struct sh_mobile_lcdc_chan *ch = info->par;
1941 mutex_lock(&ch->open_lock);
1942 dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
1946 /* Nothing to reconfigure, when called from fbcon */
1949 sh_mobile_fb_reconfig(info);
1953 mutex_unlock(&ch->open_lock);
1958 static int sh_mobile_lcdc_open(struct fb_info *info, int user)
1960 struct sh_mobile_lcdc_chan *ch = info->par;
1962 mutex_lock(&ch->open_lock);
1965 dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count);
1966 mutex_unlock(&ch->open_lock);
1971 static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
1972 struct fb_info *info)
1974 struct sh_mobile_lcdc_chan *ch = info->par;
1975 struct sh_mobile_lcdc_priv *p = ch->lcdc;
1976 unsigned int best_dist = (unsigned int)-1;
1977 unsigned int best_xres = 0;
1978 unsigned int best_yres = 0;
1982 /* If board code provides us with a list of available modes, make sure
1983 * we use one of them. Find the mode closest to the requested one. The
1984 * distance between two modes is defined as the size of the
1985 * non-overlapping parts of the two rectangles.
1987 for (i = 0; i < ch->cfg->num_modes; ++i) {
1988 const struct fb_videomode *mode = &ch->cfg->lcd_modes[i];
1991 /* We can only round up. */
1992 if (var->xres > mode->xres || var->yres > mode->yres)
1995 dist = var->xres * var->yres + mode->xres * mode->yres
1996 - 2 * min(var->xres, mode->xres)
1997 * min(var->yres, mode->yres);
1999 if (dist < best_dist) {
2000 best_xres = mode->xres;
2001 best_yres = mode->yres;
2006 /* If no available mode can be used, return an error. */
2007 if (ch->cfg->num_modes != 0) {
2008 if (best_dist == (unsigned int)-1)
2011 var->xres = best_xres;
2012 var->yres = best_yres;
2015 ret = __sh_mobile_lcdc_check_var(var, info);
2019 /* only accept the forced_fourcc for dual channel configurations */
2020 if (p->forced_fourcc &&
2021 p->forced_fourcc != sh_mobile_format_fourcc(var))
2027 static int sh_mobile_lcdc_set_par(struct fb_info *info)
2029 struct sh_mobile_lcdc_chan *ch = info->par;
2032 sh_mobile_lcdc_stop(ch->lcdc);
2034 ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var));
2035 ch->colorspace = info->var.colorspace;
2037 ch->xres = info->var.xres;
2038 ch->xres_virtual = info->var.xres_virtual;
2039 ch->yres = info->var.yres;
2040 ch->yres_virtual = info->var.yres_virtual;
2042 if (ch->format->yuv)
2043 ch->pitch = info->var.xres_virtual;
2045 ch->pitch = info->var.xres_virtual * ch->format->bpp / 8;
2047 ret = sh_mobile_lcdc_start(ch->lcdc);
2049 dev_err(info->dev, "%s: unable to restart LCDC\n", __func__);
2051 info->fix.line_length = ch->pitch;
2053 if (sh_mobile_format_is_fourcc(&info->var)) {
2054 info->fix.type = FB_TYPE_FOURCC;
2055 info->fix.visual = FB_VISUAL_FOURCC;
2057 info->fix.type = FB_TYPE_PACKED_PIXELS;
2058 info->fix.visual = FB_VISUAL_TRUECOLOR;
2065 * Screen blanking. Behavior is as follows:
2066 * FB_BLANK_UNBLANK: screen unblanked, clocks enabled
2067 * FB_BLANK_NORMAL: screen blanked, clocks enabled
2070 * FB_BLANK_POWEROFF: screen blanked, clocks disabled
2072 static int sh_mobile_lcdc_blank(int blank, struct fb_info *info)
2074 struct sh_mobile_lcdc_chan *ch = info->par;
2075 struct sh_mobile_lcdc_priv *p = ch->lcdc;
2077 /* blank the screen? */
2078 if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) {
2079 struct fb_fillrect rect = {
2083 sh_mobile_lcdc_fillrect(info, &rect);
2085 /* turn clocks on? */
2086 if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) {
2087 sh_mobile_lcdc_clk_on(p);
2089 /* turn clocks off? */
2090 if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) {
2091 /* make sure the screen is updated with the black fill before
2092 * switching the clocks off. one vsync is not enough since
2093 * blanking may occur in the middle of a refresh. deferred io
2094 * mode will reenable the clocks and update the screen in time,
2095 * so it does not need this. */
2096 if (!info->fbdefio) {
2097 sh_mobile_lcdc_wait_for_vsync(ch);
2098 sh_mobile_lcdc_wait_for_vsync(ch);
2100 sh_mobile_lcdc_clk_off(p);
2103 ch->blank_status = blank;
2108 sh_mobile_lcdc_mmap(struct fb_info *info, struct vm_area_struct *vma)
2110 struct sh_mobile_lcdc_chan *ch = info->par;
2112 return dma_mmap_coherent(ch->lcdc->dev, vma, ch->fb_mem,
2113 ch->dma_handle, ch->fb_size);
2116 static struct fb_ops sh_mobile_lcdc_ops = {
2117 .owner = THIS_MODULE,
2118 .fb_setcolreg = sh_mobile_lcdc_setcolreg,
2119 .fb_read = fb_sys_read,
2120 .fb_write = fb_sys_write,
2121 .fb_fillrect = sh_mobile_lcdc_fillrect,
2122 .fb_copyarea = sh_mobile_lcdc_copyarea,
2123 .fb_imageblit = sh_mobile_lcdc_imageblit,
2124 .fb_blank = sh_mobile_lcdc_blank,
2125 .fb_pan_display = sh_mobile_lcdc_pan,
2126 .fb_ioctl = sh_mobile_lcdc_ioctl,
2127 .fb_open = sh_mobile_lcdc_open,
2128 .fb_release = sh_mobile_lcdc_release,
2129 .fb_check_var = sh_mobile_lcdc_check_var,
2130 .fb_set_par = sh_mobile_lcdc_set_par,
2131 .fb_mmap = sh_mobile_lcdc_mmap,
2135 sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch)
2137 if (ch->info && ch->info->dev)
2138 unregister_framebuffer(ch->info);
2142 sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch)
2144 struct fb_info *info = ch->info;
2147 if (info->fbdefio) {
2148 ch->sglist = vmalloc(sizeof(struct scatterlist) *
2149 ch->fb_size >> PAGE_SHIFT);
2151 dev_err(ch->lcdc->dev, "cannot allocate sglist\n");
2156 info->bl_dev = ch->bl;
2158 ret = register_framebuffer(info);
2162 dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n",
2163 dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ?
2164 "mainlcd" : "sublcd", info->var.xres, info->var.yres,
2165 info->var.bits_per_pixel);
2167 /* deferred io mode: disable clock to save power */
2168 if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
2169 sh_mobile_lcdc_clk_off(ch->lcdc);
2175 sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch)
2177 struct fb_info *info = ch->info;
2179 if (!info || !info->device)
2185 fb_dealloc_cmap(&info->cmap);
2186 framebuffer_release(info);
2190 sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
2191 const struct fb_videomode *modes,
2192 unsigned int num_modes)
2194 struct sh_mobile_lcdc_priv *priv = ch->lcdc;
2195 struct fb_var_screeninfo *var;
2196 struct fb_info *info;
2199 /* Allocate and initialize the frame buffer device. Create the modes
2200 * list and allocate the color map.
2202 info = framebuffer_alloc(0, priv->dev);
2204 dev_err(priv->dev, "unable to allocate fb_info\n");
2210 info->flags = FBINFO_FLAG_DEFAULT;
2211 info->fbops = &sh_mobile_lcdc_ops;
2212 info->device = priv->dev;
2213 info->screen_base = ch->fb_mem;
2214 info->pseudo_palette = &ch->pseudo_palette;
2217 fb_videomode_to_modelist(modes, num_modes, &info->modelist);
2219 ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0);
2221 dev_err(priv->dev, "unable to allocate cmap\n");
2225 /* Initialize fixed screen information. Restrict pan to 2 lines steps
2226 * for NV12 and NV21.
2228 info->fix = sh_mobile_lcdc_fix;
2229 info->fix.smem_start = ch->dma_handle;
2230 info->fix.smem_len = ch->fb_size;
2231 info->fix.line_length = ch->pitch;
2233 if (ch->format->yuv)
2234 info->fix.visual = FB_VISUAL_FOURCC;
2236 info->fix.visual = FB_VISUAL_TRUECOLOR;
2238 switch (ch->format->fourcc) {
2239 case V4L2_PIX_FMT_NV12:
2240 case V4L2_PIX_FMT_NV21:
2241 info->fix.ypanstep = 2;
2242 case V4L2_PIX_FMT_NV16:
2243 case V4L2_PIX_FMT_NV61:
2244 info->fix.xpanstep = 2;
2247 /* Initialize variable screen information using the first mode as
2251 fb_videomode_to_var(var, modes);
2252 var->width = ch->display.width;
2253 var->height = ch->display.height;
2254 var->xres_virtual = ch->xres_virtual;
2255 var->yres_virtual = ch->yres_virtual;
2256 var->activate = FB_ACTIVATE_NOW;
2258 /* Use the legacy API by default for RGB formats, and the FOURCC API
2261 if (!ch->format->yuv)
2262 var->bits_per_pixel = ch->format->bpp;
2264 var->grayscale = ch->format->fourcc;
2266 ret = sh_mobile_lcdc_check_var(var, info);
2273 /* -----------------------------------------------------------------------------
2277 static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev)
2279 struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
2280 int brightness = bdev->props.brightness;
2282 if (bdev->props.power != FB_BLANK_UNBLANK ||
2283 bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
2286 ch->bl_brightness = brightness;
2287 return ch->cfg->bl_info.set_brightness(brightness);
2290 static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
2292 struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev);
2294 return ch->bl_brightness;
2297 static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,
2298 struct fb_info *info)
2300 return (info->bl_dev == bdev);
2303 static struct backlight_ops sh_mobile_lcdc_bl_ops = {
2304 .options = BL_CORE_SUSPENDRESUME,
2305 .update_status = sh_mobile_lcdc_update_bl,
2306 .get_brightness = sh_mobile_lcdc_get_brightness,
2307 .check_fb = sh_mobile_lcdc_check_fb,
2310 static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent,
2311 struct sh_mobile_lcdc_chan *ch)
2313 struct backlight_device *bl;
2315 bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch,
2316 &sh_mobile_lcdc_bl_ops, NULL);
2318 dev_err(parent, "unable to register backlight device: %ld\n",
2323 bl->props.max_brightness = ch->cfg->bl_info.max_brightness;
2324 bl->props.brightness = bl->props.max_brightness;
2325 backlight_update_status(bl);
2330 static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev)
2332 backlight_device_unregister(bdev);
2335 /* -----------------------------------------------------------------------------
2339 static int sh_mobile_lcdc_suspend(struct device *dev)
2341 struct platform_device *pdev = to_platform_device(dev);
2343 sh_mobile_lcdc_stop(platform_get_drvdata(pdev));
2347 static int sh_mobile_lcdc_resume(struct device *dev)
2349 struct platform_device *pdev = to_platform_device(dev);
2351 return sh_mobile_lcdc_start(platform_get_drvdata(pdev));
2354 static int sh_mobile_lcdc_runtime_suspend(struct device *dev)
2356 struct platform_device *pdev = to_platform_device(dev);
2357 struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
2359 /* turn off LCDC hardware */
2360 lcdc_write(priv, _LDCNT1R, 0);
2365 static int sh_mobile_lcdc_runtime_resume(struct device *dev)
2367 struct platform_device *pdev = to_platform_device(dev);
2368 struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
2370 __sh_mobile_lcdc_start(priv);
2375 static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = {
2376 .suspend = sh_mobile_lcdc_suspend,
2377 .resume = sh_mobile_lcdc_resume,
2378 .runtime_suspend = sh_mobile_lcdc_runtime_suspend,
2379 .runtime_resume = sh_mobile_lcdc_runtime_resume,
2382 /* -----------------------------------------------------------------------------
2383 * Framebuffer notifier
2386 /* locking: called with info->lock held */
2387 static int sh_mobile_lcdc_notify(struct notifier_block *nb,
2388 unsigned long action, void *data)
2390 struct fb_event *event = data;
2391 struct fb_info *info = event->info;
2392 struct sh_mobile_lcdc_chan *ch = info->par;
2394 if (&ch->lcdc->notifier != nb)
2397 dev_dbg(info->dev, "%s(): action = %lu, data = %p\n",
2398 __func__, action, event->data);
2401 case FB_EVENT_SUSPEND:
2402 sh_mobile_lcdc_display_off(ch);
2403 sh_mobile_lcdc_stop(ch->lcdc);
2405 case FB_EVENT_RESUME:
2406 mutex_lock(&ch->open_lock);
2407 sh_mobile_fb_reconfig(info);
2408 mutex_unlock(&ch->open_lock);
2410 sh_mobile_lcdc_display_on(ch);
2411 sh_mobile_lcdc_start(ch->lcdc);
2417 /* -----------------------------------------------------------------------------
2418 * Probe/remove and driver init/exit
2421 static const struct fb_videomode default_720p = {
2422 .name = "HDMI 720p",
2427 .right_margin = 110,
2436 .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
2439 static int sh_mobile_lcdc_remove(struct platform_device *pdev)
2441 struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev);
2444 fb_unregister_client(&priv->notifier);
2446 for (i = 0; i < ARRAY_SIZE(priv->overlays); i++)
2447 sh_mobile_lcdc_overlay_fb_unregister(&priv->overlays[i]);
2448 for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
2449 sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]);
2451 sh_mobile_lcdc_stop(priv);
2453 for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) {
2454 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
2456 sh_mobile_lcdc_overlay_fb_cleanup(ovl);
2459 dma_free_coherent(&pdev->dev, ovl->fb_size,
2460 ovl->fb_mem, ovl->dma_handle);
2463 for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
2464 struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
2467 ch->tx_dev->lcdc = NULL;
2468 module_put(ch->cfg->tx_dev->dev.driver->owner);
2471 sh_mobile_lcdc_channel_fb_cleanup(ch);
2474 dma_free_coherent(&pdev->dev, ch->fb_size,
2475 ch->fb_mem, ch->dma_handle);
2478 for (i = 0; i < ARRAY_SIZE(priv->ch); i++) {
2479 struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
2482 sh_mobile_lcdc_bl_remove(ch->bl);
2483 mutex_destroy(&ch->open_lock);
2486 if (priv->dot_clk) {
2487 pm_runtime_disable(&pdev->dev);
2488 clk_put(priv->dot_clk);
2492 iounmap(priv->base);
2495 free_irq(priv->irq, priv);
2500 static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch)
2502 int interface_type = ch->cfg->interface_type;
2504 switch (interface_type) {
2528 /* SUBLCD only supports SYS interface */
2529 if (lcdc_chan_is_sublcd(ch)) {
2530 if (!(interface_type & LDMT1R_IFM))
2533 interface_type &= ~LDMT1R_IFM;
2536 ch->ldmt1r_value = interface_type;
2541 sh_mobile_lcdc_overlay_init(struct sh_mobile_lcdc_overlay *ovl)
2543 const struct sh_mobile_lcdc_format_info *format;
2544 struct device *dev = ovl->channel->lcdc->dev;
2547 if (ovl->cfg->fourcc == 0)
2550 /* Validate the format. */
2551 format = sh_mobile_format_info(ovl->cfg->fourcc);
2552 if (format == NULL) {
2553 dev_err(dev, "Invalid FOURCC %08x\n", ovl->cfg->fourcc);
2557 ovl->enabled = false;
2558 ovl->mode = LCDC_OVERLAY_BLEND;
2564 /* The default Y virtual resolution is twice the panel size to allow for
2567 ovl->format = format;
2568 ovl->xres = ovl->cfg->max_xres;
2569 ovl->xres_virtual = ovl->xres;
2570 ovl->yres = ovl->cfg->max_yres;
2571 ovl->yres_virtual = ovl->yres * 2;
2574 ovl->pitch = ovl->xres_virtual * format->bpp / 8;
2576 ovl->pitch = ovl->xres_virtual;
2578 /* Allocate frame buffer memory. */
2579 ovl->fb_size = ovl->cfg->max_xres * ovl->cfg->max_yres
2580 * format->bpp / 8 * 2;
2581 ovl->fb_mem = dma_alloc_coherent(dev, ovl->fb_size, &ovl->dma_handle,
2584 dev_err(dev, "unable to allocate buffer\n");
2588 ret = sh_mobile_lcdc_overlay_fb_init(ovl);
2596 sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch)
2598 const struct sh_mobile_lcdc_format_info *format;
2599 const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg;
2600 struct device *dev = ch->lcdc->dev;
2601 const struct fb_videomode *max_mode;
2602 const struct fb_videomode *mode;
2603 unsigned int num_modes;
2604 unsigned int max_size;
2607 mutex_init(&ch->open_lock);
2608 ch->notify = sh_mobile_lcdc_display_notify;
2610 /* Validate the format. */
2611 format = sh_mobile_format_info(cfg->fourcc);
2612 if (format == NULL) {
2613 dev_err(dev, "Invalid FOURCC %08x.\n", cfg->fourcc);
2617 /* Iterate through the modes to validate them and find the highest
2623 for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) {
2624 unsigned int size = mode->yres * mode->xres;
2626 /* NV12/NV21 buffers must have even number of lines */
2627 if ((cfg->fourcc == V4L2_PIX_FMT_NV12 ||
2628 cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) {
2629 dev_err(dev, "yres must be multiple of 2 for "
2630 "YCbCr420 mode.\n");
2634 if (size > max_size) {
2641 max_size = MAX_XRES * MAX_YRES;
2643 dev_dbg(dev, "Found largest videomode %ux%u\n",
2644 max_mode->xres, max_mode->yres);
2646 if (cfg->lcd_modes == NULL) {
2647 mode = &default_720p;
2650 mode = cfg->lcd_modes;
2651 num_modes = cfg->num_modes;
2654 /* Use the first mode as default. The default Y virtual resolution is
2655 * twice the panel size to allow for double-buffering.
2657 ch->format = format;
2658 ch->xres = mode->xres;
2659 ch->xres_virtual = mode->xres;
2660 ch->yres = mode->yres;
2661 ch->yres_virtual = mode->yres * 2;
2664 ch->colorspace = V4L2_COLORSPACE_SRGB;
2665 ch->pitch = ch->xres_virtual * format->bpp / 8;
2667 ch->colorspace = V4L2_COLORSPACE_REC709;
2668 ch->pitch = ch->xres_virtual;
2671 ch->display.width = cfg->panel_cfg.width;
2672 ch->display.height = cfg->panel_cfg.height;
2673 ch->display.mode = *mode;
2675 /* Allocate frame buffer memory. */
2676 ch->fb_size = max_size * format->bpp / 8 * 2;
2677 ch->fb_mem = dma_alloc_coherent(dev, ch->fb_size, &ch->dma_handle,
2679 if (ch->fb_mem == NULL) {
2680 dev_err(dev, "unable to allocate buffer\n");
2684 /* Initialize the transmitter device if present. */
2686 if (!cfg->tx_dev->dev.driver ||
2687 !try_module_get(cfg->tx_dev->dev.driver->owner)) {
2688 dev_warn(dev, "unable to get transmitter device\n");
2691 ch->tx_dev = platform_get_drvdata(cfg->tx_dev);
2692 ch->tx_dev->lcdc = ch;
2693 ch->tx_dev->def_mode = *mode;
2696 return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes);
2699 static int sh_mobile_lcdc_probe(struct platform_device *pdev)
2701 struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data;
2702 struct sh_mobile_lcdc_priv *priv;
2703 struct resource *res;
2709 dev_err(&pdev->dev, "no platform data defined\n");
2713 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2714 i = platform_get_irq(pdev, 0);
2715 if (!res || i < 0) {
2716 dev_err(&pdev->dev, "cannot get platform resources\n");
2720 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2722 dev_err(&pdev->dev, "cannot allocate device data\n");
2726 priv->dev = &pdev->dev;
2727 priv->meram_dev = pdata->meram_dev;
2728 platform_set_drvdata(pdev, priv);
2730 error = request_irq(i, sh_mobile_lcdc_irq, 0,
2731 dev_name(&pdev->dev), priv);
2733 dev_err(&pdev->dev, "unable to request irq\n");
2738 atomic_set(&priv->hw_usecnt, -1);
2740 for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) {
2741 struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels;
2744 ch->cfg = &pdata->ch[i];
2746 error = sh_mobile_lcdc_check_interface(ch);
2748 dev_err(&pdev->dev, "unsupported interface type\n");
2751 init_waitqueue_head(&ch->frame_end_wait);
2752 init_completion(&ch->vsync_completion);
2754 /* probe the backlight is there is one defined */
2755 if (ch->cfg->bl_info.max_brightness)
2756 ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch);
2758 switch (pdata->ch[i].chan) {
2759 case LCDC_CHAN_MAINLCD:
2760 ch->enabled = LDCNT2R_ME;
2761 ch->reg_offs = lcdc_offs_mainlcd;
2764 case LCDC_CHAN_SUBLCD:
2765 ch->enabled = LDCNT2R_SE;
2766 ch->reg_offs = lcdc_offs_sublcd;
2772 if (!num_channels) {
2773 dev_err(&pdev->dev, "no channels defined\n");
2778 /* for dual channel LCDC (MAIN + SUB) force shared format setting */
2779 if (num_channels == 2)
2780 priv->forced_fourcc = pdata->ch[0].fourcc;
2782 priv->base = ioremap_nocache(res->start, resource_size(res));
2786 error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source);
2788 dev_err(&pdev->dev, "unable to setup clocks\n");
2792 /* Enable runtime PM. */
2793 pm_runtime_enable(&pdev->dev);
2795 for (i = 0; i < num_channels; i++) {
2796 struct sh_mobile_lcdc_chan *ch = &priv->ch[i];
2798 error = sh_mobile_lcdc_channel_init(ch);
2803 for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) {
2804 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
2806 ovl->cfg = &pdata->overlays[i];
2807 ovl->channel = &priv->ch[0];
2809 error = sh_mobile_lcdc_overlay_init(ovl);
2814 error = sh_mobile_lcdc_start(priv);
2816 dev_err(&pdev->dev, "unable to start hardware\n");
2820 for (i = 0; i < num_channels; i++) {
2821 struct sh_mobile_lcdc_chan *ch = priv->ch + i;
2823 error = sh_mobile_lcdc_channel_fb_register(ch);
2828 for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) {
2829 struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i];
2831 error = sh_mobile_lcdc_overlay_fb_register(ovl);
2836 /* Failure ignored */
2837 priv->notifier.notifier_call = sh_mobile_lcdc_notify;
2838 fb_register_client(&priv->notifier);
2842 sh_mobile_lcdc_remove(pdev);
2847 static struct platform_driver sh_mobile_lcdc_driver = {
2849 .name = "sh_mobile_lcdc_fb",
2850 .owner = THIS_MODULE,
2851 .pm = &sh_mobile_lcdc_dev_pm_ops,
2853 .probe = sh_mobile_lcdc_probe,
2854 .remove = sh_mobile_lcdc_remove,
2857 module_platform_driver(sh_mobile_lcdc_driver);
2859 MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver");
2860 MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
2861 MODULE_LICENSE("GPL v2");