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 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
= monspec
->max_x
* 10;
590 info
->var
.height
= monspec
->max_y
* 10;
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
);
863 static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay
*ovl
)
868 lcdc_write(ovl
->channel
->lcdc
, LDBCR
, LDBCR_UPC(ovl
->index
));
869 lcdc_write_overlay(ovl
, LDBnBSIFR(ovl
->index
), 0);
870 lcdc_write(ovl
->channel
->lcdc
, LDBCR
,
871 LDBCR_UPF(ovl
->index
) | LDBCR_UPD(ovl
->index
));
875 ovl
->base_addr_y
= ovl
->dma_handle
;
876 ovl
->base_addr_c
= ovl
->dma_handle
877 + ovl
->xres_virtual
* ovl
->yres_virtual
;
880 case LCDC_OVERLAY_BLEND
:
881 format
= LDBBSIFR_EN
| (ovl
->alpha
<< LDBBSIFR_LAY_SHIFT
);
884 case LCDC_OVERLAY_ROP3
:
885 format
= LDBBSIFR_EN
| LDBBSIFR_BRSEL
886 | (ovl
->rop3
<< LDBBSIFR_ROP3_SHIFT
);
890 switch (ovl
->format
->fourcc
) {
891 case V4L2_PIX_FMT_RGB565
:
892 case V4L2_PIX_FMT_NV21
:
893 case V4L2_PIX_FMT_NV61
:
894 case V4L2_PIX_FMT_NV42
:
895 format
|= LDBBSIFR_SWPL
| LDBBSIFR_SWPW
;
897 case V4L2_PIX_FMT_BGR24
:
898 case V4L2_PIX_FMT_NV12
:
899 case V4L2_PIX_FMT_NV16
:
900 case V4L2_PIX_FMT_NV24
:
901 format
|= LDBBSIFR_SWPL
| LDBBSIFR_SWPW
| LDBBSIFR_SWPB
;
903 case V4L2_PIX_FMT_BGR32
:
905 format
|= LDBBSIFR_SWPL
;
909 switch (ovl
->format
->fourcc
) {
910 case V4L2_PIX_FMT_RGB565
:
911 format
|= LDBBSIFR_AL_1
| LDBBSIFR_RY
| LDBBSIFR_RPKF_RGB16
;
913 case V4L2_PIX_FMT_BGR24
:
914 format
|= LDBBSIFR_AL_1
| LDBBSIFR_RY
| LDBBSIFR_RPKF_RGB24
;
916 case V4L2_PIX_FMT_BGR32
:
917 format
|= LDBBSIFR_AL_PK
| LDBBSIFR_RY
| LDDFR_PKF_ARGB32
;
919 case V4L2_PIX_FMT_NV12
:
920 case V4L2_PIX_FMT_NV21
:
921 format
|= LDBBSIFR_AL_1
| LDBBSIFR_CHRR_420
;
923 case V4L2_PIX_FMT_NV16
:
924 case V4L2_PIX_FMT_NV61
:
925 format
|= LDBBSIFR_AL_1
| LDBBSIFR_CHRR_422
;
927 case V4L2_PIX_FMT_NV24
:
928 case V4L2_PIX_FMT_NV42
:
929 format
|= LDBBSIFR_AL_1
| LDBBSIFR_CHRR_444
;
933 lcdc_write(ovl
->channel
->lcdc
, LDBCR
, LDBCR_UPC(ovl
->index
));
935 lcdc_write_overlay(ovl
, LDBnBSIFR(ovl
->index
), format
);
937 lcdc_write_overlay(ovl
, LDBnBSSZR(ovl
->index
),
938 (ovl
->yres
<< LDBBSSZR_BVSS_SHIFT
) |
939 (ovl
->xres
<< LDBBSSZR_BHSS_SHIFT
));
940 lcdc_write_overlay(ovl
, LDBnBLOCR(ovl
->index
),
941 (ovl
->pos_y
<< LDBBLOCR_CVLC_SHIFT
) |
942 (ovl
->pos_x
<< LDBBLOCR_CHLC_SHIFT
));
943 lcdc_write_overlay(ovl
, LDBnBSMWR(ovl
->index
),
944 ovl
->pitch
<< LDBBSMWR_BSMW_SHIFT
);
946 lcdc_write_overlay(ovl
, LDBnBSAYR(ovl
->index
), ovl
->base_addr_y
);
947 lcdc_write_overlay(ovl
, LDBnBSACR(ovl
->index
), ovl
->base_addr_c
);
949 lcdc_write(ovl
->channel
->lcdc
, LDBCR
,
950 LDBCR_UPF(ovl
->index
) | LDBCR_UPD(ovl
->index
));
954 * __sh_mobile_lcdc_start - Configure and start the LCDC
957 * Configure all enabled channels and start the LCDC device. All external
958 * devices (clocks, MERAM, panels, ...) are not touched by this function.
960 static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv
*priv
)
962 struct sh_mobile_lcdc_chan
*ch
;
966 /* Enable LCDC channels. Read data from external memory, avoid using the
969 lcdc_write(priv
, _LDCNT2R
, priv
->ch
[0].enabled
| priv
->ch
[1].enabled
);
971 /* Stop the LCDC first and disable all interrupts. */
972 sh_mobile_lcdc_start_stop(priv
, 0);
973 lcdc_write(priv
, _LDINTR
, 0);
975 /* Configure power supply, dot clocks and start them. */
977 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
983 lcdc_write_chan(ch
, LDPMR
, 0);
985 m
= ch
->cfg
->clock_divider
;
989 /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider
992 lcdc_write_chan(ch
, LDDCKPAT1R
, 0);
993 lcdc_write_chan(ch
, LDDCKPAT2R
, (1 << (m
/2)) - 1);
997 tmp
|= m
<< (lcdc_chan_is_sublcd(ch
) ? 8 : 0);
1000 lcdc_write(priv
, _LDDCKR
, tmp
);
1001 lcdc_write(priv
, _LDDCKSTPR
, 0);
1002 lcdc_wait_bit(priv
, _LDDCKSTPR
, ~0, 0);
1004 /* Setup geometry, format, frame buffer memory and operation mode. */
1005 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
1010 sh_mobile_lcdc_geometry(ch
);
1012 tmp
= ch
->format
->lddfr
;
1014 if (ch
->format
->yuv
) {
1015 switch (ch
->colorspace
) {
1016 case V4L2_COLORSPACE_REC709
:
1019 case V4L2_COLORSPACE_JPEG
:
1025 lcdc_write_chan(ch
, LDDFR
, tmp
);
1026 lcdc_write_chan(ch
, LDMLSR
, ch
->line_size
);
1027 lcdc_write_chan(ch
, LDSA1R
, ch
->base_addr_y
);
1028 if (ch
->format
->yuv
)
1029 lcdc_write_chan(ch
, LDSA2R
, ch
->base_addr_c
);
1031 /* When using deferred I/O mode, configure the LCDC for one-shot
1032 * operation and enable the frame end interrupt. Otherwise use
1033 * continuous read mode.
1035 if (ch
->ldmt1r_value
& LDMT1R_IFM
&&
1036 ch
->cfg
->sys_bus_cfg
.deferred_io_msec
) {
1037 lcdc_write_chan(ch
, LDSM1R
, LDSM1R_OS
);
1038 lcdc_write(priv
, _LDINTR
, LDINTR_FE
);
1040 lcdc_write_chan(ch
, LDSM1R
, 0);
1044 /* Word and long word swap. */
1045 switch (priv
->ch
[0].format
->fourcc
) {
1046 case V4L2_PIX_FMT_RGB565
:
1047 case V4L2_PIX_FMT_NV21
:
1048 case V4L2_PIX_FMT_NV61
:
1049 case V4L2_PIX_FMT_NV42
:
1050 tmp
= LDDDSR_LS
| LDDDSR_WS
;
1052 case V4L2_PIX_FMT_BGR24
:
1053 case V4L2_PIX_FMT_NV12
:
1054 case V4L2_PIX_FMT_NV16
:
1055 case V4L2_PIX_FMT_NV24
:
1056 tmp
= LDDDSR_LS
| LDDDSR_WS
| LDDDSR_BS
;
1058 case V4L2_PIX_FMT_BGR32
:
1063 lcdc_write(priv
, _LDDDSR
, tmp
);
1065 /* Enable the display output. */
1066 lcdc_write(priv
, _LDCNT1R
, LDCNT1R_DE
);
1067 sh_mobile_lcdc_start_stop(priv
, 1);
1071 static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv
*priv
)
1073 struct sh_mobile_meram_info
*mdev
= priv
->meram_dev
;
1074 struct sh_mobile_lcdc_chan
*ch
;
1079 /* enable clocks before accessing the hardware */
1080 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
1081 if (priv
->ch
[k
].enabled
)
1082 sh_mobile_lcdc_clk_on(priv
);
1086 lcdc_write(priv
, _LDCNT2R
, lcdc_read(priv
, _LDCNT2R
) | LDCNT2R_BR
);
1087 lcdc_wait_bit(priv
, _LDCNT2R
, LDCNT2R_BR
, 0);
1089 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
1090 const struct sh_mobile_lcdc_panel_cfg
*panel
;
1096 panel
= &ch
->cfg
->panel_cfg
;
1097 if (panel
->setup_sys
) {
1098 ret
= panel
->setup_sys(ch
, &sh_mobile_lcdc_sys_bus_ops
);
1104 /* Compute frame buffer base address and pitch for each channel. */
1105 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
1113 ch
->base_addr_y
= ch
->dma_handle
;
1114 ch
->base_addr_c
= ch
->dma_handle
1115 + ch
->xres_virtual
* ch
->yres_virtual
;
1116 ch
->line_size
= ch
->pitch
;
1118 /* Enable MERAM if possible. */
1119 if (mdev
== NULL
|| ch
->cfg
->meram_cfg
== NULL
)
1122 /* Free the allocated MERAM cache. */
1124 sh_mobile_meram_cache_free(mdev
, ch
->cache
);
1128 switch (ch
->format
->fourcc
) {
1129 case V4L2_PIX_FMT_NV12
:
1130 case V4L2_PIX_FMT_NV21
:
1131 case V4L2_PIX_FMT_NV16
:
1132 case V4L2_PIX_FMT_NV61
:
1133 pixelformat
= SH_MOBILE_MERAM_PF_NV
;
1135 case V4L2_PIX_FMT_NV24
:
1136 case V4L2_PIX_FMT_NV42
:
1137 pixelformat
= SH_MOBILE_MERAM_PF_NV24
;
1139 case V4L2_PIX_FMT_RGB565
:
1140 case V4L2_PIX_FMT_BGR24
:
1141 case V4L2_PIX_FMT_BGR32
:
1143 pixelformat
= SH_MOBILE_MERAM_PF_RGB
;
1147 cache
= sh_mobile_meram_cache_alloc(mdev
, ch
->cfg
->meram_cfg
,
1148 ch
->pitch
, ch
->yres
, pixelformat
,
1150 if (!IS_ERR(cache
)) {
1151 sh_mobile_meram_cache_update(mdev
, cache
,
1152 ch
->base_addr_y
, ch
->base_addr_c
,
1153 &ch
->base_addr_y
, &ch
->base_addr_c
);
1158 for (k
= 0; k
< ARRAY_SIZE(priv
->overlays
); ++k
) {
1159 struct sh_mobile_lcdc_overlay
*ovl
= &priv
->overlays
[k
];
1160 sh_mobile_lcdc_overlay_setup(ovl
);
1163 /* Start the LCDC. */
1164 __sh_mobile_lcdc_start(priv
);
1166 /* Setup deferred I/O, tell the board code to enable the panels, and
1167 * turn backlight on.
1169 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
1174 tmp
= ch
->cfg
->sys_bus_cfg
.deferred_io_msec
;
1175 if (ch
->ldmt1r_value
& LDMT1R_IFM
&& tmp
) {
1176 ch
->defio
.deferred_io
= sh_mobile_lcdc_deferred_io
;
1177 ch
->defio
.delay
= msecs_to_jiffies(tmp
);
1178 ch
->info
->fbdefio
= &ch
->defio
;
1179 fb_deferred_io_init(ch
->info
);
1182 sh_mobile_lcdc_display_on(ch
);
1185 ch
->bl
->props
.power
= FB_BLANK_UNBLANK
;
1186 backlight_update_status(ch
->bl
);
1193 static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv
*priv
)
1195 struct sh_mobile_lcdc_chan
*ch
;
1198 /* clean up deferred io and ask board code to disable panel */
1199 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++) {
1204 /* deferred io mode:
1205 * flush frame, and wait for frame end interrupt
1206 * clean up deferred io and enable clock
1208 if (ch
->info
&& ch
->info
->fbdefio
) {
1210 schedule_delayed_work(&ch
->info
->deferred_work
, 0);
1211 wait_event(ch
->frame_end_wait
, ch
->frame_end
);
1212 fb_deferred_io_cleanup(ch
->info
);
1213 ch
->info
->fbdefio
= NULL
;
1214 sh_mobile_lcdc_clk_on(priv
);
1218 ch
->bl
->props
.power
= FB_BLANK_POWERDOWN
;
1219 backlight_update_status(ch
->bl
);
1222 sh_mobile_lcdc_display_off(ch
);
1224 /* Free the MERAM cache. */
1226 sh_mobile_meram_cache_free(priv
->meram_dev
, ch
->cache
);
1233 if (priv
->started
) {
1234 sh_mobile_lcdc_start_stop(priv
, 0);
1239 for (k
= 0; k
< ARRAY_SIZE(priv
->ch
); k
++)
1240 if (priv
->ch
[k
].enabled
)
1241 sh_mobile_lcdc_clk_off(priv
);
1244 static int __sh_mobile_lcdc_check_var(struct fb_var_screeninfo
*var
,
1245 struct fb_info
*info
)
1247 if (var
->xres
> MAX_XRES
|| var
->yres
> MAX_YRES
)
1250 /* Make sure the virtual resolution is at least as big as the visible
1253 if (var
->xres_virtual
< var
->xres
)
1254 var
->xres_virtual
= var
->xres
;
1255 if (var
->yres_virtual
< var
->yres
)
1256 var
->yres_virtual
= var
->yres
;
1258 if (sh_mobile_format_is_fourcc(var
)) {
1259 const struct sh_mobile_lcdc_format_info
*format
;
1261 format
= sh_mobile_format_info(var
->grayscale
);
1264 var
->bits_per_pixel
= format
->bpp
;
1266 /* Default to RGB and JPEG color-spaces for RGB and YUV formats
1270 var
->colorspace
= V4L2_COLORSPACE_SRGB
;
1271 else if (var
->colorspace
!= V4L2_COLORSPACE_REC709
)
1272 var
->colorspace
= V4L2_COLORSPACE_JPEG
;
1274 if (var
->bits_per_pixel
<= 16) { /* RGB 565 */
1275 var
->bits_per_pixel
= 16;
1276 var
->red
.offset
= 11;
1277 var
->red
.length
= 5;
1278 var
->green
.offset
= 5;
1279 var
->green
.length
= 6;
1280 var
->blue
.offset
= 0;
1281 var
->blue
.length
= 5;
1282 var
->transp
.offset
= 0;
1283 var
->transp
.length
= 0;
1284 } else if (var
->bits_per_pixel
<= 24) { /* RGB 888 */
1285 var
->bits_per_pixel
= 24;
1286 var
->red
.offset
= 16;
1287 var
->red
.length
= 8;
1288 var
->green
.offset
= 8;
1289 var
->green
.length
= 8;
1290 var
->blue
.offset
= 0;
1291 var
->blue
.length
= 8;
1292 var
->transp
.offset
= 0;
1293 var
->transp
.length
= 0;
1294 } else if (var
->bits_per_pixel
<= 32) { /* RGBA 888 */
1295 var
->bits_per_pixel
= 32;
1296 var
->red
.offset
= 16;
1297 var
->red
.length
= 8;
1298 var
->green
.offset
= 8;
1299 var
->green
.length
= 8;
1300 var
->blue
.offset
= 0;
1301 var
->blue
.length
= 8;
1302 var
->transp
.offset
= 24;
1303 var
->transp
.length
= 8;
1307 var
->red
.msb_right
= 0;
1308 var
->green
.msb_right
= 0;
1309 var
->blue
.msb_right
= 0;
1310 var
->transp
.msb_right
= 0;
1313 /* Make sure we don't exceed our allocated memory. */
1314 if (var
->xres_virtual
* var
->yres_virtual
* var
->bits_per_pixel
/ 8 >
1321 /* -----------------------------------------------------------------------------
1322 * Frame buffer operations - Overlays
1326 overlay_alpha_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1328 struct fb_info
*info
= dev_get_drvdata(dev
);
1329 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1331 return scnprintf(buf
, PAGE_SIZE
, "%u\n", ovl
->alpha
);
1335 overlay_alpha_store(struct device
*dev
, struct device_attribute
*attr
,
1336 const char *buf
, size_t count
)
1338 struct fb_info
*info
= dev_get_drvdata(dev
);
1339 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1343 alpha
= simple_strtoul(buf
, &endp
, 10);
1347 if (endp
- buf
!= count
)
1353 if (ovl
->alpha
!= alpha
) {
1356 if (ovl
->mode
== LCDC_OVERLAY_BLEND
&& ovl
->enabled
)
1357 sh_mobile_lcdc_overlay_setup(ovl
);
1364 overlay_mode_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1366 struct fb_info
*info
= dev_get_drvdata(dev
);
1367 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1369 return scnprintf(buf
, PAGE_SIZE
, "%u\n", ovl
->mode
);
1373 overlay_mode_store(struct device
*dev
, struct device_attribute
*attr
,
1374 const char *buf
, size_t count
)
1376 struct fb_info
*info
= dev_get_drvdata(dev
);
1377 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1381 mode
= simple_strtoul(buf
, &endp
, 10);
1385 if (endp
- buf
!= count
)
1388 if (mode
!= LCDC_OVERLAY_BLEND
&& mode
!= LCDC_OVERLAY_ROP3
)
1391 if (ovl
->mode
!= mode
) {
1395 sh_mobile_lcdc_overlay_setup(ovl
);
1402 overlay_position_show(struct device
*dev
, struct device_attribute
*attr
,
1405 struct fb_info
*info
= dev_get_drvdata(dev
);
1406 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1408 return scnprintf(buf
, PAGE_SIZE
, "%d,%d\n", ovl
->pos_x
, ovl
->pos_y
);
1412 overlay_position_store(struct device
*dev
, struct device_attribute
*attr
,
1413 const char *buf
, size_t count
)
1415 struct fb_info
*info
= dev_get_drvdata(dev
);
1416 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1421 pos_x
= simple_strtol(buf
, &endp
, 10);
1425 pos_y
= simple_strtol(endp
+ 1, &endp
, 10);
1429 if (endp
- buf
!= count
)
1432 if (ovl
->pos_x
!= pos_x
|| ovl
->pos_y
!= pos_y
) {
1437 sh_mobile_lcdc_overlay_setup(ovl
);
1444 overlay_rop3_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1446 struct fb_info
*info
= dev_get_drvdata(dev
);
1447 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1449 return scnprintf(buf
, PAGE_SIZE
, "%u\n", ovl
->rop3
);
1453 overlay_rop3_store(struct device
*dev
, struct device_attribute
*attr
,
1454 const char *buf
, size_t count
)
1456 struct fb_info
*info
= dev_get_drvdata(dev
);
1457 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1461 rop3
= !!simple_strtoul(buf
, &endp
, 10);
1465 if (endp
- buf
!= count
)
1471 if (ovl
->rop3
!= rop3
) {
1474 if (ovl
->mode
== LCDC_OVERLAY_ROP3
&& ovl
->enabled
)
1475 sh_mobile_lcdc_overlay_setup(ovl
);
1481 static const struct device_attribute overlay_sysfs_attrs
[] = {
1482 __ATTR(ovl_alpha
, S_IRUGO
|S_IWUSR
,
1483 overlay_alpha_show
, overlay_alpha_store
),
1484 __ATTR(ovl_mode
, S_IRUGO
|S_IWUSR
,
1485 overlay_mode_show
, overlay_mode_store
),
1486 __ATTR(ovl_position
, S_IRUGO
|S_IWUSR
,
1487 overlay_position_show
, overlay_position_store
),
1488 __ATTR(ovl_rop3
, S_IRUGO
|S_IWUSR
,
1489 overlay_rop3_show
, overlay_rop3_store
),
1492 static const struct fb_fix_screeninfo sh_mobile_lcdc_overlay_fix
= {
1493 .id
= "SH Mobile LCDC",
1494 .type
= FB_TYPE_PACKED_PIXELS
,
1495 .visual
= FB_VISUAL_TRUECOLOR
,
1496 .accel
= FB_ACCEL_NONE
,
1500 .capabilities
= FB_CAP_FOURCC
,
1503 static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo
*var
,
1504 struct fb_info
*info
)
1506 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1507 unsigned long base_addr_y
;
1508 unsigned long base_addr_c
;
1509 unsigned long y_offset
;
1510 unsigned long c_offset
;
1512 if (!ovl
->format
->yuv
) {
1513 y_offset
= (var
->yoffset
* ovl
->xres_virtual
+ var
->xoffset
)
1514 * ovl
->format
->bpp
/ 8;
1517 unsigned int xsub
= ovl
->format
->bpp
< 24 ? 2 : 1;
1518 unsigned int ysub
= ovl
->format
->bpp
< 16 ? 2 : 1;
1520 y_offset
= var
->yoffset
* ovl
->xres_virtual
+ var
->xoffset
;
1521 c_offset
= var
->yoffset
/ ysub
* ovl
->xres_virtual
* 2 / xsub
1522 + var
->xoffset
* 2 / xsub
;
1525 /* If the Y offset hasn't changed, the C offset hasn't either. There's
1526 * nothing to do in that case.
1528 if (y_offset
== ovl
->pan_y_offset
)
1531 /* Set the source address for the next refresh */
1532 base_addr_y
= ovl
->dma_handle
+ y_offset
;
1533 base_addr_c
= ovl
->dma_handle
+ ovl
->xres_virtual
* ovl
->yres_virtual
1536 ovl
->base_addr_y
= base_addr_y
;
1537 ovl
->base_addr_c
= base_addr_c
;
1538 ovl
->pan_y_offset
= y_offset
;
1540 lcdc_write(ovl
->channel
->lcdc
, LDBCR
, LDBCR_UPC(ovl
->index
));
1542 lcdc_write_overlay(ovl
, LDBnBSAYR(ovl
->index
), ovl
->base_addr_y
);
1543 lcdc_write_overlay(ovl
, LDBnBSACR(ovl
->index
), ovl
->base_addr_c
);
1545 lcdc_write(ovl
->channel
->lcdc
, LDBCR
,
1546 LDBCR_UPF(ovl
->index
) | LDBCR_UPD(ovl
->index
));
1551 static int sh_mobile_lcdc_overlay_ioctl(struct fb_info
*info
, unsigned int cmd
,
1554 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1557 case FBIO_WAITFORVSYNC
:
1558 return sh_mobile_lcdc_wait_for_vsync(ovl
->channel
);
1561 return -ENOIOCTLCMD
;
1565 static int sh_mobile_lcdc_overlay_check_var(struct fb_var_screeninfo
*var
,
1566 struct fb_info
*info
)
1568 return __sh_mobile_lcdc_check_var(var
, info
);
1571 static int sh_mobile_lcdc_overlay_set_par(struct fb_info
*info
)
1573 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1576 sh_mobile_format_info(sh_mobile_format_fourcc(&info
->var
));
1578 ovl
->xres
= info
->var
.xres
;
1579 ovl
->xres_virtual
= info
->var
.xres_virtual
;
1580 ovl
->yres
= info
->var
.yres
;
1581 ovl
->yres_virtual
= info
->var
.yres_virtual
;
1583 if (ovl
->format
->yuv
)
1584 ovl
->pitch
= info
->var
.xres_virtual
;
1586 ovl
->pitch
= info
->var
.xres_virtual
* ovl
->format
->bpp
/ 8;
1588 sh_mobile_lcdc_overlay_setup(ovl
);
1590 info
->fix
.line_length
= ovl
->pitch
;
1592 if (sh_mobile_format_is_fourcc(&info
->var
)) {
1593 info
->fix
.type
= FB_TYPE_FOURCC
;
1594 info
->fix
.visual
= FB_VISUAL_FOURCC
;
1596 info
->fix
.type
= FB_TYPE_PACKED_PIXELS
;
1597 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
1603 /* Overlay blanking. Disable the overlay when blanked. */
1604 static int sh_mobile_lcdc_overlay_blank(int blank
, struct fb_info
*info
)
1606 struct sh_mobile_lcdc_overlay
*ovl
= info
->par
;
1608 ovl
->enabled
= !blank
;
1609 sh_mobile_lcdc_overlay_setup(ovl
);
1611 /* Prevent the backlight from receiving a blanking event by returning
1617 static struct fb_ops sh_mobile_lcdc_overlay_ops
= {
1618 .owner
= THIS_MODULE
,
1619 .fb_read
= fb_sys_read
,
1620 .fb_write
= fb_sys_write
,
1621 .fb_fillrect
= sys_fillrect
,
1622 .fb_copyarea
= sys_copyarea
,
1623 .fb_imageblit
= sys_imageblit
,
1624 .fb_blank
= sh_mobile_lcdc_overlay_blank
,
1625 .fb_pan_display
= sh_mobile_lcdc_overlay_pan
,
1626 .fb_ioctl
= sh_mobile_lcdc_overlay_ioctl
,
1627 .fb_check_var
= sh_mobile_lcdc_overlay_check_var
,
1628 .fb_set_par
= sh_mobile_lcdc_overlay_set_par
,
1632 sh_mobile_lcdc_overlay_fb_unregister(struct sh_mobile_lcdc_overlay
*ovl
)
1634 struct fb_info
*info
= ovl
->info
;
1636 if (info
== NULL
|| info
->dev
== NULL
)
1639 unregister_framebuffer(ovl
->info
);
1642 static int __devinit
1643 sh_mobile_lcdc_overlay_fb_register(struct sh_mobile_lcdc_overlay
*ovl
)
1645 struct sh_mobile_lcdc_priv
*lcdc
= ovl
->channel
->lcdc
;
1646 struct fb_info
*info
= ovl
->info
;
1653 ret
= register_framebuffer(info
);
1657 dev_info(lcdc
->dev
, "registered %s/overlay %u as %dx%d %dbpp.\n",
1658 dev_name(lcdc
->dev
), ovl
->index
, info
->var
.xres
,
1659 info
->var
.yres
, info
->var
.bits_per_pixel
);
1661 for (i
= 0; i
< ARRAY_SIZE(overlay_sysfs_attrs
); ++i
) {
1662 ret
= device_create_file(info
->dev
, &overlay_sysfs_attrs
[i
]);
1671 sh_mobile_lcdc_overlay_fb_cleanup(struct sh_mobile_lcdc_overlay
*ovl
)
1673 struct fb_info
*info
= ovl
->info
;
1675 if (info
== NULL
|| info
->device
== NULL
)
1678 framebuffer_release(info
);
1681 static int __devinit
1682 sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay
*ovl
)
1684 struct sh_mobile_lcdc_priv
*priv
= ovl
->channel
->lcdc
;
1685 struct fb_var_screeninfo
*var
;
1686 struct fb_info
*info
;
1688 /* Allocate and initialize the frame buffer device. */
1689 info
= framebuffer_alloc(0, priv
->dev
);
1691 dev_err(priv
->dev
, "unable to allocate fb_info\n");
1697 info
->flags
= FBINFO_FLAG_DEFAULT
;
1698 info
->fbops
= &sh_mobile_lcdc_overlay_ops
;
1699 info
->device
= priv
->dev
;
1700 info
->screen_base
= ovl
->fb_mem
;
1703 /* Initialize fixed screen information. Restrict pan to 2 lines steps
1704 * for NV12 and NV21.
1706 info
->fix
= sh_mobile_lcdc_overlay_fix
;
1707 snprintf(info
->fix
.id
, sizeof(info
->fix
.id
),
1708 "SH Mobile LCDC Overlay %u", ovl
->index
);
1709 info
->fix
.smem_start
= ovl
->dma_handle
;
1710 info
->fix
.smem_len
= ovl
->fb_size
;
1711 info
->fix
.line_length
= ovl
->pitch
;
1713 if (ovl
->format
->yuv
)
1714 info
->fix
.visual
= FB_VISUAL_FOURCC
;
1716 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
1718 switch (ovl
->format
->fourcc
) {
1719 case V4L2_PIX_FMT_NV16
:
1720 case V4L2_PIX_FMT_NV61
:
1721 info
->fix
.ypanstep
= 2;
1722 case V4L2_PIX_FMT_NV12
:
1723 case V4L2_PIX_FMT_NV21
:
1724 info
->fix
.xpanstep
= 2;
1727 /* Initialize variable screen information. */
1729 memset(var
, 0, sizeof(*var
));
1730 var
->xres
= ovl
->xres
;
1731 var
->yres
= ovl
->yres
;
1732 var
->xres_virtual
= ovl
->xres_virtual
;
1733 var
->yres_virtual
= ovl
->yres_virtual
;
1734 var
->activate
= FB_ACTIVATE_NOW
;
1736 /* Use the legacy API by default for RGB formats, and the FOURCC API
1739 if (!ovl
->format
->yuv
)
1740 var
->bits_per_pixel
= ovl
->format
->bpp
;
1742 var
->grayscale
= ovl
->format
->fourcc
;
1744 return sh_mobile_lcdc_overlay_check_var(var
, info
);
1747 /* -----------------------------------------------------------------------------
1748 * Frame buffer operations - main frame buffer
1751 static int sh_mobile_lcdc_setcolreg(u_int regno
,
1752 u_int red
, u_int green
, u_int blue
,
1753 u_int transp
, struct fb_info
*info
)
1755 u32
*palette
= info
->pseudo_palette
;
1757 if (regno
>= PALETTE_NR
)
1760 /* only FB_VISUAL_TRUECOLOR supported */
1762 red
>>= 16 - info
->var
.red
.length
;
1763 green
>>= 16 - info
->var
.green
.length
;
1764 blue
>>= 16 - info
->var
.blue
.length
;
1765 transp
>>= 16 - info
->var
.transp
.length
;
1767 palette
[regno
] = (red
<< info
->var
.red
.offset
) |
1768 (green
<< info
->var
.green
.offset
) |
1769 (blue
<< info
->var
.blue
.offset
) |
1770 (transp
<< info
->var
.transp
.offset
);
1775 static const struct fb_fix_screeninfo sh_mobile_lcdc_fix
= {
1776 .id
= "SH Mobile LCDC",
1777 .type
= FB_TYPE_PACKED_PIXELS
,
1778 .visual
= FB_VISUAL_TRUECOLOR
,
1779 .accel
= FB_ACCEL_NONE
,
1783 .capabilities
= FB_CAP_FOURCC
,
1786 static void sh_mobile_lcdc_fillrect(struct fb_info
*info
,
1787 const struct fb_fillrect
*rect
)
1789 sys_fillrect(info
, rect
);
1790 sh_mobile_lcdc_deferred_io_touch(info
);
1793 static void sh_mobile_lcdc_copyarea(struct fb_info
*info
,
1794 const struct fb_copyarea
*area
)
1796 sys_copyarea(info
, area
);
1797 sh_mobile_lcdc_deferred_io_touch(info
);
1800 static void sh_mobile_lcdc_imageblit(struct fb_info
*info
,
1801 const struct fb_image
*image
)
1803 sys_imageblit(info
, image
);
1804 sh_mobile_lcdc_deferred_io_touch(info
);
1807 static int sh_mobile_lcdc_pan(struct fb_var_screeninfo
*var
,
1808 struct fb_info
*info
)
1810 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
1811 struct sh_mobile_lcdc_priv
*priv
= ch
->lcdc
;
1812 unsigned long ldrcntr
;
1813 unsigned long base_addr_y
, base_addr_c
;
1814 unsigned long y_offset
;
1815 unsigned long c_offset
;
1817 if (!ch
->format
->yuv
) {
1818 y_offset
= (var
->yoffset
* ch
->xres_virtual
+ var
->xoffset
)
1819 * ch
->format
->bpp
/ 8;
1822 unsigned int xsub
= ch
->format
->bpp
< 24 ? 2 : 1;
1823 unsigned int ysub
= ch
->format
->bpp
< 16 ? 2 : 1;
1825 y_offset
= var
->yoffset
* ch
->xres_virtual
+ var
->xoffset
;
1826 c_offset
= var
->yoffset
/ ysub
* ch
->xres_virtual
* 2 / xsub
1827 + var
->xoffset
* 2 / xsub
;
1830 /* If the Y offset hasn't changed, the C offset hasn't either. There's
1831 * nothing to do in that case.
1833 if (y_offset
== ch
->pan_y_offset
)
1836 /* Set the source address for the next refresh */
1837 base_addr_y
= ch
->dma_handle
+ y_offset
;
1838 base_addr_c
= ch
->dma_handle
+ ch
->xres_virtual
* ch
->yres_virtual
1842 sh_mobile_meram_cache_update(priv
->meram_dev
, ch
->cache
,
1843 base_addr_y
, base_addr_c
,
1844 &base_addr_y
, &base_addr_c
);
1846 ch
->base_addr_y
= base_addr_y
;
1847 ch
->base_addr_c
= base_addr_c
;
1848 ch
->pan_y_offset
= y_offset
;
1850 lcdc_write_chan_mirror(ch
, LDSA1R
, base_addr_y
);
1851 if (ch
->format
->yuv
)
1852 lcdc_write_chan_mirror(ch
, LDSA2R
, base_addr_c
);
1854 ldrcntr
= lcdc_read(priv
, _LDRCNTR
);
1855 if (lcdc_chan_is_sublcd(ch
))
1856 lcdc_write(ch
->lcdc
, _LDRCNTR
, ldrcntr
^ LDRCNTR_SRS
);
1858 lcdc_write(ch
->lcdc
, _LDRCNTR
, ldrcntr
^ LDRCNTR_MRS
);
1861 sh_mobile_lcdc_deferred_io_touch(info
);
1866 static int sh_mobile_lcdc_ioctl(struct fb_info
*info
, unsigned int cmd
,
1869 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
1873 case FBIO_WAITFORVSYNC
:
1874 retval
= sh_mobile_lcdc_wait_for_vsync(ch
);
1878 retval
= -ENOIOCTLCMD
;
1884 static void sh_mobile_fb_reconfig(struct fb_info
*info
)
1886 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
1887 struct fb_var_screeninfo var
;
1888 struct fb_videomode mode
;
1889 struct fb_event event
;
1890 int evnt
= FB_EVENT_MODE_CHANGE_ALL
;
1892 if (ch
->use_count
> 1 || (ch
->use_count
== 1 && !info
->fbcon_par
))
1893 /* More framebuffer users are active */
1896 fb_var_to_videomode(&mode
, &info
->var
);
1898 if (fb_mode_is_equal(&ch
->display
.mode
, &mode
))
1901 /* Display has been re-plugged, framebuffer is free now, reconfigure */
1903 fb_videomode_to_var(&var
, &ch
->display
.mode
);
1904 var
.width
= ch
->display
.width
;
1905 var
.height
= ch
->display
.height
;
1906 var
.activate
= FB_ACTIVATE_NOW
;
1908 if (fb_set_var(info
, &var
) < 0)
1909 /* Couldn't reconfigure, hopefully, can continue as before */
1913 * fb_set_var() calls the notifier change internally, only if
1914 * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a
1915 * user event, we have to call the chain ourselves.
1918 event
.data
= &ch
->display
.mode
;
1919 fb_notifier_call_chain(evnt
, &event
);
1923 * Locking: both .fb_release() and .fb_open() are called with info->lock held if
1924 * user == 1, or with console sem held, if user == 0.
1926 static int sh_mobile_lcdc_release(struct fb_info
*info
, int user
)
1928 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
1930 mutex_lock(&ch
->open_lock
);
1931 dev_dbg(info
->dev
, "%s(): %d users\n", __func__
, ch
->use_count
);
1935 /* Nothing to reconfigure, when called from fbcon */
1938 sh_mobile_fb_reconfig(info
);
1942 mutex_unlock(&ch
->open_lock
);
1947 static int sh_mobile_lcdc_open(struct fb_info
*info
, int user
)
1949 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
1951 mutex_lock(&ch
->open_lock
);
1954 dev_dbg(info
->dev
, "%s(): %d users\n", __func__
, ch
->use_count
);
1955 mutex_unlock(&ch
->open_lock
);
1960 static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo
*var
,
1961 struct fb_info
*info
)
1963 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
1964 struct sh_mobile_lcdc_priv
*p
= ch
->lcdc
;
1965 unsigned int best_dist
= (unsigned int)-1;
1966 unsigned int best_xres
= 0;
1967 unsigned int best_yres
= 0;
1971 /* If board code provides us with a list of available modes, make sure
1972 * we use one of them. Find the mode closest to the requested one. The
1973 * distance between two modes is defined as the size of the
1974 * non-overlapping parts of the two rectangles.
1976 for (i
= 0; i
< ch
->cfg
->num_modes
; ++i
) {
1977 const struct fb_videomode
*mode
= &ch
->cfg
->lcd_modes
[i
];
1980 /* We can only round up. */
1981 if (var
->xres
> mode
->xres
|| var
->yres
> mode
->yres
)
1984 dist
= var
->xres
* var
->yres
+ mode
->xres
* mode
->yres
1985 - 2 * min(var
->xres
, mode
->xres
)
1986 * min(var
->yres
, mode
->yres
);
1988 if (dist
< best_dist
) {
1989 best_xres
= mode
->xres
;
1990 best_yres
= mode
->yres
;
1995 /* If no available mode can be used, return an error. */
1996 if (ch
->cfg
->num_modes
!= 0) {
1997 if (best_dist
== (unsigned int)-1)
2000 var
->xres
= best_xres
;
2001 var
->yres
= best_yres
;
2004 ret
= __sh_mobile_lcdc_check_var(var
, info
);
2008 /* only accept the forced_fourcc for dual channel configurations */
2009 if (p
->forced_fourcc
&&
2010 p
->forced_fourcc
!= sh_mobile_format_fourcc(var
))
2016 static int sh_mobile_lcdc_set_par(struct fb_info
*info
)
2018 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
2021 sh_mobile_lcdc_stop(ch
->lcdc
);
2023 ch
->format
= sh_mobile_format_info(sh_mobile_format_fourcc(&info
->var
));
2024 ch
->colorspace
= info
->var
.colorspace
;
2026 ch
->xres
= info
->var
.xres
;
2027 ch
->xres_virtual
= info
->var
.xres_virtual
;
2028 ch
->yres
= info
->var
.yres
;
2029 ch
->yres_virtual
= info
->var
.yres_virtual
;
2031 if (ch
->format
->yuv
)
2032 ch
->pitch
= info
->var
.xres_virtual
;
2034 ch
->pitch
= info
->var
.xres_virtual
* ch
->format
->bpp
/ 8;
2036 ret
= sh_mobile_lcdc_start(ch
->lcdc
);
2038 dev_err(info
->dev
, "%s: unable to restart LCDC\n", __func__
);
2040 info
->fix
.line_length
= ch
->pitch
;
2042 if (sh_mobile_format_is_fourcc(&info
->var
)) {
2043 info
->fix
.type
= FB_TYPE_FOURCC
;
2044 info
->fix
.visual
= FB_VISUAL_FOURCC
;
2046 info
->fix
.type
= FB_TYPE_PACKED_PIXELS
;
2047 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
2054 * Screen blanking. Behavior is as follows:
2055 * FB_BLANK_UNBLANK: screen unblanked, clocks enabled
2056 * FB_BLANK_NORMAL: screen blanked, clocks enabled
2059 * FB_BLANK_POWEROFF: screen blanked, clocks disabled
2061 static int sh_mobile_lcdc_blank(int blank
, struct fb_info
*info
)
2063 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
2064 struct sh_mobile_lcdc_priv
*p
= ch
->lcdc
;
2066 /* blank the screen? */
2067 if (blank
> FB_BLANK_UNBLANK
&& ch
->blank_status
== FB_BLANK_UNBLANK
) {
2068 struct fb_fillrect rect
= {
2072 sh_mobile_lcdc_fillrect(info
, &rect
);
2074 /* turn clocks on? */
2075 if (blank
<= FB_BLANK_NORMAL
&& ch
->blank_status
> FB_BLANK_NORMAL
) {
2076 sh_mobile_lcdc_clk_on(p
);
2078 /* turn clocks off? */
2079 if (blank
> FB_BLANK_NORMAL
&& ch
->blank_status
<= FB_BLANK_NORMAL
) {
2080 /* make sure the screen is updated with the black fill before
2081 * switching the clocks off. one vsync is not enough since
2082 * blanking may occur in the middle of a refresh. deferred io
2083 * mode will reenable the clocks and update the screen in time,
2084 * so it does not need this. */
2085 if (!info
->fbdefio
) {
2086 sh_mobile_lcdc_wait_for_vsync(ch
);
2087 sh_mobile_lcdc_wait_for_vsync(ch
);
2089 sh_mobile_lcdc_clk_off(p
);
2092 ch
->blank_status
= blank
;
2096 static struct fb_ops sh_mobile_lcdc_ops
= {
2097 .owner
= THIS_MODULE
,
2098 .fb_setcolreg
= sh_mobile_lcdc_setcolreg
,
2099 .fb_read
= fb_sys_read
,
2100 .fb_write
= fb_sys_write
,
2101 .fb_fillrect
= sh_mobile_lcdc_fillrect
,
2102 .fb_copyarea
= sh_mobile_lcdc_copyarea
,
2103 .fb_imageblit
= sh_mobile_lcdc_imageblit
,
2104 .fb_blank
= sh_mobile_lcdc_blank
,
2105 .fb_pan_display
= sh_mobile_lcdc_pan
,
2106 .fb_ioctl
= sh_mobile_lcdc_ioctl
,
2107 .fb_open
= sh_mobile_lcdc_open
,
2108 .fb_release
= sh_mobile_lcdc_release
,
2109 .fb_check_var
= sh_mobile_lcdc_check_var
,
2110 .fb_set_par
= sh_mobile_lcdc_set_par
,
2114 sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan
*ch
)
2116 if (ch
->info
&& ch
->info
->dev
)
2117 unregister_framebuffer(ch
->info
);
2120 static int __devinit
2121 sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan
*ch
)
2123 struct fb_info
*info
= ch
->info
;
2126 if (info
->fbdefio
) {
2127 ch
->sglist
= vmalloc(sizeof(struct scatterlist
) *
2128 ch
->fb_size
>> PAGE_SHIFT
);
2130 dev_err(ch
->lcdc
->dev
, "cannot allocate sglist\n");
2135 info
->bl_dev
= ch
->bl
;
2137 ret
= register_framebuffer(info
);
2141 dev_info(ch
->lcdc
->dev
, "registered %s/%s as %dx%d %dbpp.\n",
2142 dev_name(ch
->lcdc
->dev
), (ch
->cfg
->chan
== LCDC_CHAN_MAINLCD
) ?
2143 "mainlcd" : "sublcd", info
->var
.xres
, info
->var
.yres
,
2144 info
->var
.bits_per_pixel
);
2146 /* deferred io mode: disable clock to save power */
2147 if (info
->fbdefio
|| info
->state
== FBINFO_STATE_SUSPENDED
)
2148 sh_mobile_lcdc_clk_off(ch
->lcdc
);
2154 sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan
*ch
)
2156 struct fb_info
*info
= ch
->info
;
2158 if (!info
|| !info
->device
)
2164 fb_dealloc_cmap(&info
->cmap
);
2165 framebuffer_release(info
);
2168 static int __devinit
2169 sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan
*ch
,
2170 const struct fb_videomode
*mode
,
2171 unsigned int num_modes
)
2173 struct sh_mobile_lcdc_priv
*priv
= ch
->lcdc
;
2174 struct fb_var_screeninfo
*var
;
2175 struct fb_info
*info
;
2178 /* Allocate and initialize the frame buffer device. Create the modes
2179 * list and allocate the color map.
2181 info
= framebuffer_alloc(0, priv
->dev
);
2183 dev_err(priv
->dev
, "unable to allocate fb_info\n");
2189 info
->flags
= FBINFO_FLAG_DEFAULT
;
2190 info
->fbops
= &sh_mobile_lcdc_ops
;
2191 info
->device
= priv
->dev
;
2192 info
->screen_base
= ch
->fb_mem
;
2193 info
->pseudo_palette
= &ch
->pseudo_palette
;
2196 fb_videomode_to_modelist(mode
, num_modes
, &info
->modelist
);
2198 ret
= fb_alloc_cmap(&info
->cmap
, PALETTE_NR
, 0);
2200 dev_err(priv
->dev
, "unable to allocate cmap\n");
2204 /* Initialize fixed screen information. Restrict pan to 2 lines steps
2205 * for NV12 and NV21.
2207 info
->fix
= sh_mobile_lcdc_fix
;
2208 info
->fix
.smem_start
= ch
->dma_handle
;
2209 info
->fix
.smem_len
= ch
->fb_size
;
2210 info
->fix
.line_length
= ch
->pitch
;
2212 if (ch
->format
->yuv
)
2213 info
->fix
.visual
= FB_VISUAL_FOURCC
;
2215 info
->fix
.visual
= FB_VISUAL_TRUECOLOR
;
2217 switch (ch
->format
->fourcc
) {
2218 case V4L2_PIX_FMT_NV16
:
2219 case V4L2_PIX_FMT_NV61
:
2220 info
->fix
.ypanstep
= 2;
2221 case V4L2_PIX_FMT_NV12
:
2222 case V4L2_PIX_FMT_NV21
:
2223 info
->fix
.xpanstep
= 2;
2226 /* Initialize variable screen information using the first mode as
2230 fb_videomode_to_var(var
, mode
);
2231 var
->width
= ch
->cfg
->panel_cfg
.width
;
2232 var
->height
= ch
->cfg
->panel_cfg
.height
;
2233 var
->xres_virtual
= ch
->xres_virtual
;
2234 var
->yres_virtual
= ch
->yres_virtual
;
2235 var
->activate
= FB_ACTIVATE_NOW
;
2237 /* Use the legacy API by default for RGB formats, and the FOURCC API
2240 if (!ch
->format
->yuv
)
2241 var
->bits_per_pixel
= ch
->format
->bpp
;
2243 var
->grayscale
= ch
->format
->fourcc
;
2245 ret
= sh_mobile_lcdc_check_var(var
, info
);
2252 /* -----------------------------------------------------------------------------
2256 static int sh_mobile_lcdc_update_bl(struct backlight_device
*bdev
)
2258 struct sh_mobile_lcdc_chan
*ch
= bl_get_data(bdev
);
2259 int brightness
= bdev
->props
.brightness
;
2261 if (bdev
->props
.power
!= FB_BLANK_UNBLANK
||
2262 bdev
->props
.state
& (BL_CORE_SUSPENDED
| BL_CORE_FBBLANK
))
2265 return ch
->cfg
->bl_info
.set_brightness(brightness
);
2268 static int sh_mobile_lcdc_get_brightness(struct backlight_device
*bdev
)
2270 struct sh_mobile_lcdc_chan
*ch
= bl_get_data(bdev
);
2272 return ch
->cfg
->bl_info
.get_brightness();
2275 static int sh_mobile_lcdc_check_fb(struct backlight_device
*bdev
,
2276 struct fb_info
*info
)
2278 return (info
->bl_dev
== bdev
);
2281 static struct backlight_ops sh_mobile_lcdc_bl_ops
= {
2282 .options
= BL_CORE_SUSPENDRESUME
,
2283 .update_status
= sh_mobile_lcdc_update_bl
,
2284 .get_brightness
= sh_mobile_lcdc_get_brightness
,
2285 .check_fb
= sh_mobile_lcdc_check_fb
,
2288 static struct backlight_device
*sh_mobile_lcdc_bl_probe(struct device
*parent
,
2289 struct sh_mobile_lcdc_chan
*ch
)
2291 struct backlight_device
*bl
;
2293 bl
= backlight_device_register(ch
->cfg
->bl_info
.name
, parent
, ch
,
2294 &sh_mobile_lcdc_bl_ops
, NULL
);
2296 dev_err(parent
, "unable to register backlight device: %ld\n",
2301 bl
->props
.max_brightness
= ch
->cfg
->bl_info
.max_brightness
;
2302 bl
->props
.brightness
= bl
->props
.max_brightness
;
2303 backlight_update_status(bl
);
2308 static void sh_mobile_lcdc_bl_remove(struct backlight_device
*bdev
)
2310 backlight_device_unregister(bdev
);
2313 /* -----------------------------------------------------------------------------
2317 static int sh_mobile_lcdc_suspend(struct device
*dev
)
2319 struct platform_device
*pdev
= to_platform_device(dev
);
2321 sh_mobile_lcdc_stop(platform_get_drvdata(pdev
));
2325 static int sh_mobile_lcdc_resume(struct device
*dev
)
2327 struct platform_device
*pdev
= to_platform_device(dev
);
2329 return sh_mobile_lcdc_start(platform_get_drvdata(pdev
));
2332 static int sh_mobile_lcdc_runtime_suspend(struct device
*dev
)
2334 struct platform_device
*pdev
= to_platform_device(dev
);
2335 struct sh_mobile_lcdc_priv
*priv
= platform_get_drvdata(pdev
);
2337 /* turn off LCDC hardware */
2338 lcdc_write(priv
, _LDCNT1R
, 0);
2343 static int sh_mobile_lcdc_runtime_resume(struct device
*dev
)
2345 struct platform_device
*pdev
= to_platform_device(dev
);
2346 struct sh_mobile_lcdc_priv
*priv
= platform_get_drvdata(pdev
);
2348 __sh_mobile_lcdc_start(priv
);
2353 static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops
= {
2354 .suspend
= sh_mobile_lcdc_suspend
,
2355 .resume
= sh_mobile_lcdc_resume
,
2356 .runtime_suspend
= sh_mobile_lcdc_runtime_suspend
,
2357 .runtime_resume
= sh_mobile_lcdc_runtime_resume
,
2360 /* -----------------------------------------------------------------------------
2361 * Framebuffer notifier
2364 /* locking: called with info->lock held */
2365 static int sh_mobile_lcdc_notify(struct notifier_block
*nb
,
2366 unsigned long action
, void *data
)
2368 struct fb_event
*event
= data
;
2369 struct fb_info
*info
= event
->info
;
2370 struct sh_mobile_lcdc_chan
*ch
= info
->par
;
2372 if (&ch
->lcdc
->notifier
!= nb
)
2375 dev_dbg(info
->dev
, "%s(): action = %lu, data = %p\n",
2376 __func__
, action
, event
->data
);
2379 case FB_EVENT_SUSPEND
:
2380 sh_mobile_lcdc_display_off(ch
);
2381 sh_mobile_lcdc_stop(ch
->lcdc
);
2383 case FB_EVENT_RESUME
:
2384 mutex_lock(&ch
->open_lock
);
2385 sh_mobile_fb_reconfig(info
);
2386 mutex_unlock(&ch
->open_lock
);
2388 sh_mobile_lcdc_display_on(ch
);
2389 sh_mobile_lcdc_start(ch
->lcdc
);
2395 /* -----------------------------------------------------------------------------
2396 * Probe/remove and driver init/exit
2399 static const struct fb_videomode default_720p __devinitconst
= {
2400 .name
= "HDMI 720p",
2405 .right_margin
= 110,
2414 .sync
= FB_SYNC_VERT_HIGH_ACT
| FB_SYNC_HOR_HIGH_ACT
,
2417 static int sh_mobile_lcdc_remove(struct platform_device
*pdev
)
2419 struct sh_mobile_lcdc_priv
*priv
= platform_get_drvdata(pdev
);
2422 fb_unregister_client(&priv
->notifier
);
2424 for (i
= 0; i
< ARRAY_SIZE(priv
->overlays
); i
++)
2425 sh_mobile_lcdc_overlay_fb_unregister(&priv
->overlays
[i
]);
2426 for (i
= 0; i
< ARRAY_SIZE(priv
->ch
); i
++)
2427 sh_mobile_lcdc_channel_fb_unregister(&priv
->ch
[i
]);
2429 sh_mobile_lcdc_stop(priv
);
2431 for (i
= 0; i
< ARRAY_SIZE(priv
->overlays
); i
++) {
2432 struct sh_mobile_lcdc_overlay
*ovl
= &priv
->overlays
[i
];
2434 sh_mobile_lcdc_overlay_fb_cleanup(ovl
);
2437 dma_free_coherent(&pdev
->dev
, ovl
->fb_size
,
2438 ovl
->fb_mem
, ovl
->dma_handle
);
2441 for (i
= 0; i
< ARRAY_SIZE(priv
->ch
); i
++) {
2442 struct sh_mobile_lcdc_chan
*ch
= &priv
->ch
[i
];
2445 ch
->tx_dev
->lcdc
= NULL
;
2446 module_put(ch
->cfg
->tx_dev
->dev
.driver
->owner
);
2449 sh_mobile_lcdc_channel_fb_cleanup(ch
);
2452 dma_free_coherent(&pdev
->dev
, ch
->fb_size
,
2453 ch
->fb_mem
, ch
->dma_handle
);
2456 for (i
= 0; i
< ARRAY_SIZE(priv
->ch
); i
++) {
2457 struct sh_mobile_lcdc_chan
*ch
= &priv
->ch
[i
];
2460 sh_mobile_lcdc_bl_remove(ch
->bl
);
2461 mutex_destroy(&ch
->open_lock
);
2464 if (priv
->dot_clk
) {
2465 pm_runtime_disable(&pdev
->dev
);
2466 clk_put(priv
->dot_clk
);
2470 iounmap(priv
->base
);
2473 free_irq(priv
->irq
, priv
);
2478 static int __devinit
sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan
*ch
)
2480 int interface_type
= ch
->cfg
->interface_type
;
2482 switch (interface_type
) {
2506 /* SUBLCD only supports SYS interface */
2507 if (lcdc_chan_is_sublcd(ch
)) {
2508 if (!(interface_type
& LDMT1R_IFM
))
2511 interface_type
&= ~LDMT1R_IFM
;
2514 ch
->ldmt1r_value
= interface_type
;
2518 static int __devinit
2519 sh_mobile_lcdc_overlay_init(struct sh_mobile_lcdc_priv
*priv
,
2520 struct sh_mobile_lcdc_overlay
*ovl
)
2522 const struct sh_mobile_lcdc_format_info
*format
;
2525 if (ovl
->cfg
->fourcc
== 0)
2528 /* Validate the format. */
2529 format
= sh_mobile_format_info(ovl
->cfg
->fourcc
);
2530 if (format
== NULL
) {
2531 dev_err(priv
->dev
, "Invalid FOURCC %08x\n", ovl
->cfg
->fourcc
);
2535 ovl
->enabled
= false;
2536 ovl
->mode
= LCDC_OVERLAY_BLEND
;
2542 /* The default Y virtual resolution is twice the panel size to allow for
2545 ovl
->format
= format
;
2546 ovl
->xres
= ovl
->cfg
->max_xres
;
2547 ovl
->xres_virtual
= ovl
->xres
;
2548 ovl
->yres
= ovl
->cfg
->max_yres
;
2549 ovl
->yres_virtual
= ovl
->yres
* 2;
2552 ovl
->pitch
= ovl
->xres_virtual
* format
->bpp
/ 8;
2554 ovl
->pitch
= ovl
->xres_virtual
;
2556 /* Allocate frame buffer memory. */
2557 ovl
->fb_size
= ovl
->cfg
->max_xres
* ovl
->cfg
->max_yres
2558 * format
->bpp
/ 8 * 2;
2559 ovl
->fb_mem
= dma_alloc_coherent(priv
->dev
, ovl
->fb_size
,
2560 &ovl
->dma_handle
, GFP_KERNEL
);
2562 dev_err(priv
->dev
, "unable to allocate buffer\n");
2566 ret
= sh_mobile_lcdc_overlay_fb_init(ovl
);
2573 static int __devinit
2574 sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_priv
*priv
,
2575 struct sh_mobile_lcdc_chan
*ch
)
2577 const struct sh_mobile_lcdc_format_info
*format
;
2578 const struct sh_mobile_lcdc_chan_cfg
*cfg
= ch
->cfg
;
2579 const struct fb_videomode
*max_mode
;
2580 const struct fb_videomode
*mode
;
2581 unsigned int num_modes
;
2582 unsigned int max_size
;
2585 mutex_init(&ch
->open_lock
);
2586 ch
->notify
= sh_mobile_lcdc_display_notify
;
2588 /* Validate the format. */
2589 format
= sh_mobile_format_info(cfg
->fourcc
);
2590 if (format
== NULL
) {
2591 dev_err(priv
->dev
, "Invalid FOURCC %08x.\n", cfg
->fourcc
);
2595 /* Iterate through the modes to validate them and find the highest
2601 for (i
= 0, mode
= cfg
->lcd_modes
; i
< cfg
->num_modes
; i
++, mode
++) {
2602 unsigned int size
= mode
->yres
* mode
->xres
;
2604 /* NV12/NV21 buffers must have even number of lines */
2605 if ((cfg
->fourcc
== V4L2_PIX_FMT_NV12
||
2606 cfg
->fourcc
== V4L2_PIX_FMT_NV21
) && (mode
->yres
& 0x1)) {
2607 dev_err(priv
->dev
, "yres must be multiple of 2 for "
2608 "YCbCr420 mode.\n");
2612 if (size
> max_size
) {
2619 max_size
= MAX_XRES
* MAX_YRES
;
2621 dev_dbg(priv
->dev
, "Found largest videomode %ux%u\n",
2622 max_mode
->xres
, max_mode
->yres
);
2624 if (cfg
->lcd_modes
== NULL
) {
2625 mode
= &default_720p
;
2628 mode
= cfg
->lcd_modes
;
2629 num_modes
= cfg
->num_modes
;
2632 /* Use the first mode as default. The default Y virtual resolution is
2633 * twice the panel size to allow for double-buffering.
2635 ch
->format
= format
;
2636 ch
->xres
= mode
->xres
;
2637 ch
->xres_virtual
= mode
->xres
;
2638 ch
->yres
= mode
->yres
;
2639 ch
->yres_virtual
= mode
->yres
* 2;
2642 ch
->colorspace
= V4L2_COLORSPACE_SRGB
;
2643 ch
->pitch
= ch
->xres_virtual
* format
->bpp
/ 8;
2645 ch
->colorspace
= V4L2_COLORSPACE_REC709
;
2646 ch
->pitch
= ch
->xres_virtual
;
2649 ch
->display
.width
= cfg
->panel_cfg
.width
;
2650 ch
->display
.height
= cfg
->panel_cfg
.height
;
2651 ch
->display
.mode
= *mode
;
2653 /* Allocate frame buffer memory. */
2654 ch
->fb_size
= max_size
* format
->bpp
/ 8 * 2;
2655 ch
->fb_mem
= dma_alloc_coherent(priv
->dev
, ch
->fb_size
, &ch
->dma_handle
,
2657 if (ch
->fb_mem
== NULL
) {
2658 dev_err(priv
->dev
, "unable to allocate buffer\n");
2662 /* Initialize the transmitter device if present. */
2664 if (!cfg
->tx_dev
->dev
.driver
||
2665 !try_module_get(cfg
->tx_dev
->dev
.driver
->owner
)) {
2667 "unable to get transmitter device\n");
2670 ch
->tx_dev
= platform_get_drvdata(cfg
->tx_dev
);
2671 ch
->tx_dev
->lcdc
= ch
;
2672 ch
->tx_dev
->def_mode
= *mode
;
2675 return sh_mobile_lcdc_channel_fb_init(ch
, mode
, num_modes
);
2678 static int __devinit
sh_mobile_lcdc_probe(struct platform_device
*pdev
)
2680 struct sh_mobile_lcdc_info
*pdata
= pdev
->dev
.platform_data
;
2681 struct sh_mobile_lcdc_priv
*priv
;
2682 struct resource
*res
;
2688 dev_err(&pdev
->dev
, "no platform data defined\n");
2692 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2693 i
= platform_get_irq(pdev
, 0);
2694 if (!res
|| i
< 0) {
2695 dev_err(&pdev
->dev
, "cannot get platform resources\n");
2699 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
2701 dev_err(&pdev
->dev
, "cannot allocate device data\n");
2705 priv
->dev
= &pdev
->dev
;
2706 priv
->meram_dev
= pdata
->meram_dev
;
2707 platform_set_drvdata(pdev
, priv
);
2709 error
= request_irq(i
, sh_mobile_lcdc_irq
, 0,
2710 dev_name(&pdev
->dev
), priv
);
2712 dev_err(&pdev
->dev
, "unable to request irq\n");
2717 atomic_set(&priv
->hw_usecnt
, -1);
2719 for (i
= 0, num_channels
= 0; i
< ARRAY_SIZE(pdata
->ch
); i
++) {
2720 struct sh_mobile_lcdc_chan
*ch
= priv
->ch
+ num_channels
;
2723 ch
->cfg
= &pdata
->ch
[i
];
2725 error
= sh_mobile_lcdc_check_interface(ch
);
2727 dev_err(&pdev
->dev
, "unsupported interface type\n");
2730 init_waitqueue_head(&ch
->frame_end_wait
);
2731 init_completion(&ch
->vsync_completion
);
2733 /* probe the backlight is there is one defined */
2734 if (ch
->cfg
->bl_info
.max_brightness
)
2735 ch
->bl
= sh_mobile_lcdc_bl_probe(&pdev
->dev
, ch
);
2737 switch (pdata
->ch
[i
].chan
) {
2738 case LCDC_CHAN_MAINLCD
:
2739 ch
->enabled
= LDCNT2R_ME
;
2740 ch
->reg_offs
= lcdc_offs_mainlcd
;
2743 case LCDC_CHAN_SUBLCD
:
2744 ch
->enabled
= LDCNT2R_SE
;
2745 ch
->reg_offs
= lcdc_offs_sublcd
;
2751 if (!num_channels
) {
2752 dev_err(&pdev
->dev
, "no channels defined\n");
2757 /* for dual channel LCDC (MAIN + SUB) force shared format setting */
2758 if (num_channels
== 2)
2759 priv
->forced_fourcc
= pdata
->ch
[0].fourcc
;
2761 priv
->base
= ioremap_nocache(res
->start
, resource_size(res
));
2765 error
= sh_mobile_lcdc_setup_clocks(priv
, pdata
->clock_source
);
2767 dev_err(&pdev
->dev
, "unable to setup clocks\n");
2771 /* Enable runtime PM. */
2772 pm_runtime_enable(&pdev
->dev
);
2774 for (i
= 0; i
< num_channels
; i
++) {
2775 struct sh_mobile_lcdc_chan
*ch
= priv
->ch
+ i
;
2777 error
= sh_mobile_lcdc_channel_init(priv
, ch
);
2782 for (i
= 0; i
< ARRAY_SIZE(pdata
->overlays
); i
++) {
2783 struct sh_mobile_lcdc_overlay
*ovl
= &priv
->overlays
[i
];
2785 ovl
->cfg
= &pdata
->overlays
[i
];
2786 ovl
->channel
= &priv
->ch
[0];
2788 error
= sh_mobile_lcdc_overlay_init(priv
, ovl
);
2793 error
= sh_mobile_lcdc_start(priv
);
2795 dev_err(&pdev
->dev
, "unable to start hardware\n");
2799 for (i
= 0; i
< num_channels
; i
++) {
2800 struct sh_mobile_lcdc_chan
*ch
= priv
->ch
+ i
;
2802 error
= sh_mobile_lcdc_channel_fb_register(ch
);
2807 for (i
= 0; i
< ARRAY_SIZE(pdata
->overlays
); i
++) {
2808 struct sh_mobile_lcdc_overlay
*ovl
= &priv
->overlays
[i
];
2810 error
= sh_mobile_lcdc_overlay_fb_register(ovl
);
2815 /* Failure ignored */
2816 priv
->notifier
.notifier_call
= sh_mobile_lcdc_notify
;
2817 fb_register_client(&priv
->notifier
);
2821 sh_mobile_lcdc_remove(pdev
);
2826 static struct platform_driver sh_mobile_lcdc_driver
= {
2828 .name
= "sh_mobile_lcdc_fb",
2829 .owner
= THIS_MODULE
,
2830 .pm
= &sh_mobile_lcdc_dev_pm_ops
,
2832 .probe
= sh_mobile_lcdc_probe
,
2833 .remove
= sh_mobile_lcdc_remove
,
2836 module_platform_driver(sh_mobile_lcdc_driver
);
2838 MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver");
2839 MODULE_AUTHOR("Magnus Damm <damm@opensource.se>");
2840 MODULE_LICENSE("GPL v2");