| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Laurent Pinchart | 10896 | 83.87% | 53 | 51.46% |
| Magnus Damm | 796 | 6.13% | 11 | 10.68% |
| Guennadi Liakhovetski | 429 | 3.30% | 14 | 13.59% |
| Alexandre Courbot | 405 | 3.12% | 2 | 1.94% |
| Hideki EIRAKU | 110 | 0.85% | 1 | 0.97% |
| Phil Edworthy | 104 | 0.80% | 4 | 3.88% |
| Damian Hobson-Garcia | 88 | 0.68% | 3 | 2.91% |
| Paul Mundt | 69 | 0.53% | 3 | 2.91% |
| Geert Uytterhoeven | 37 | 0.28% | 1 | 0.97% |
| Gu Zheng | 12 | 0.09% | 1 | 0.97% |
| Dan Carpenter | 9 | 0.07% | 1 | 0.97% |
| Kuninori Morimoto | 9 | 0.07% | 1 | 0.97% |
| Kees Cook | 9 | 0.07% | 1 | 0.97% |
| Wei Yongjun | 7 | 0.05% | 1 | 0.97% |
| Wolfram Sang | 4 | 0.03% | 1 | 0.97% |
| Axel Lin | 2 | 0.02% | 1 | 0.97% |
| Paul Gortmaker | 2 | 0.02% | 1 | 0.97% |
| Tejun Heo | 2 | 0.02% | 1 | 0.97% |
| Yong Zhang | 1 | 0.01% | 1 | 0.97% |
| Arvind Yadav | 1 | 0.01% | 1 | 0.97% |
| Total | 12992 | 103 |
/* * SuperH Mobile LCDC Framebuffer * * Copyright (c) 2008 Magnus Damm * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/atomic.h> #include <linux/backlight.h> #include <linux/clk.h> #include <linux/console.h> #include <linux/ctype.h> #include <linux/dma-mapping.h> #include <linux/delay.h> #include <linux/gpio.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/ioctl.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <linux/vmalloc.h> #include <video/sh_mobile_lcdc.h> #include "sh_mobile_lcdcfb.h" /* ---------------------------------------------------------------------------- * Overlay register definitions */ #define LDBCR 0xb00 #define LDBCR_UPC(n) (1 << ((n) + 16)) #define LDBCR_UPF(n) (1 << ((n) + 8)) #define LDBCR_UPD(n) (1 << ((n) + 0)) #define LDBnBSIFR(n) (0xb20 + (n) * 0x20 + 0x00) #define LDBBSIFR_EN (1 << 31) #define LDBBSIFR_VS (1 << 29) #define LDBBSIFR_BRSEL (1 << 28) #define LDBBSIFR_MX (1 << 27) #define LDBBSIFR_MY (1 << 26) #define LDBBSIFR_CV3 (3 << 24) #define LDBBSIFR_CV2 (2 << 24) #define LDBBSIFR_CV1 (1 << 24) #define LDBBSIFR_CV0 (0 << 24) #define LDBBSIFR_CV_MASK (3 << 24) #define LDBBSIFR_LAY_MASK (0xff << 16) #define LDBBSIFR_LAY_SHIFT 16 #define LDBBSIFR_ROP3_MASK (0xff << 16) #define LDBBSIFR_ROP3_SHIFT 16 #define LDBBSIFR_AL_PL8 (3 << 14) #define LDBBSIFR_AL_PL1 (2 << 14) #define LDBBSIFR_AL_PK (1 << 14) #define LDBBSIFR_AL_1 (0 << 14) #define LDBBSIFR_AL_MASK (3 << 14) #define LDBBSIFR_SWPL (1 << 10) #define LDBBSIFR_SWPW (1 << 9) #define LDBBSIFR_SWPB (1 << 8) #define LDBBSIFR_RY (1 << 7) #define LDBBSIFR_CHRR_420 (2 << 0) #define LDBBSIFR_CHRR_422 (1 << 0) #define LDBBSIFR_CHRR_444 (0 << 0) #define LDBBSIFR_RPKF_ARGB32 (0x00 << 0) #define LDBBSIFR_RPKF_RGB16 (0x03 << 0) #define LDBBSIFR_RPKF_RGB24 (0x0b << 0) #define LDBBSIFR_RPKF_MASK (0x1f << 0) #define LDBnBSSZR(n) (0xb20 + (n) * 0x20 + 0x04) #define LDBBSSZR_BVSS_MASK (0xfff << 16) #define LDBBSSZR_BVSS_SHIFT 16 #define LDBBSSZR_BHSS_MASK (0xfff << 0) #define LDBBSSZR_BHSS_SHIFT 0 #define LDBnBLOCR(n) (0xb20 + (n) * 0x20 + 0x08) #define LDBBLOCR_CVLC_MASK (0xfff << 16) #define LDBBLOCR_CVLC_SHIFT 16 #define LDBBLOCR_CHLC_MASK (0xfff << 0) #define LDBBLOCR_CHLC_SHIFT 0 #define LDBnBSMWR(n) (0xb20 + (n) * 0x20 + 0x0c) #define LDBBSMWR_BSMWA_MASK (0xffff << 16) #define LDBBSMWR_BSMWA_SHIFT 16 #define LDBBSMWR_BSMW_MASK (0xffff << 0) #define LDBBSMWR_BSMW_SHIFT 0 #define LDBnBSAYR(n) (0xb20 + (n) * 0x20 + 0x10) #define LDBBSAYR_FG1A_MASK (0xff << 24) #define LDBBSAYR_FG1A_SHIFT 24 #define LDBBSAYR_FG1R_MASK (0xff << 16) #define LDBBSAYR_FG1R_SHIFT 16 #define LDBBSAYR_FG1G_MASK (0xff << 8) #define LDBBSAYR_FG1G_SHIFT 8 #define LDBBSAYR_FG1B_MASK (0xff << 0) #define LDBBSAYR_FG1B_SHIFT 0 #define LDBnBSACR(n) (0xb20 + (n) * 0x20 + 0x14) #define LDBBSACR_FG2A_MASK (0xff << 24) #define LDBBSACR_FG2A_SHIFT 24 #define LDBBSACR_FG2R_MASK (0xff << 16) #define LDBBSACR_FG2R_SHIFT 16 #define LDBBSACR_FG2G_MASK (0xff << 8) #define LDBBSACR_FG2G_SHIFT 8 #define LDBBSACR_FG2B_MASK (0xff << 0) #define LDBBSACR_FG2B_SHIFT 0 #define LDBnBSAAR(n) (0xb20 + (n) * 0x20 + 0x18) #define LDBBSAAR_AP_MASK (0xff << 24) #define LDBBSAAR_AP_SHIFT 24 #define LDBBSAAR_R_MASK (0xff << 16) #define LDBBSAAR_R_SHIFT 16 #define LDBBSAAR_GY_MASK (0xff << 8) #define LDBBSAAR_GY_SHIFT 8 #define LDBBSAAR_B_MASK (0xff << 0) #define LDBBSAAR_B_SHIFT 0 #define LDBnBPPCR(n) (0xb20 + (n) * 0x20 + 0x1c) #define LDBBPPCR_AP_MASK (0xff << 24) #define LDBBPPCR_AP_SHIFT 24 #define LDBBPPCR_R_MASK (0xff << 16) #define LDBBPPCR_R_SHIFT 16 #define LDBBPPCR_GY_MASK (0xff << 8) #define LDBBPPCR_GY_SHIFT 8 #define LDBBPPCR_B_MASK (0xff << 0) #define LDBBPPCR_B_SHIFT 0 #define LDBnBBGCL(n) (0xb10 + (n) * 0x04) #define LDBBBGCL_BGA_MASK (0xff << 24) #define LDBBBGCL_BGA_SHIFT 24 #define LDBBBGCL_BGR_MASK (0xff << 16) #define LDBBBGCL_BGR_SHIFT 16 #define LDBBBGCL_BGG_MASK (0xff << 8) #define LDBBBGCL_BGG_SHIFT 8 #define LDBBBGCL_BGB_MASK (0xff << 0) #define LDBBBGCL_BGB_SHIFT 0 #define SIDE_B_OFFSET 0x1000 #define MIRROR_OFFSET 0x2000 #define MAX_XRES 1920 #define MAX_YRES 1080 enum sh_mobile_lcdc_overlay_mode { LCDC_OVERLAY_BLEND, LCDC_OVERLAY_ROP3, }; /* * struct sh_mobile_lcdc_overlay - LCDC display overlay * * @channel: LCDC channel this overlay belongs to * @cfg: Overlay configuration * @info: Frame buffer device * @index: Overlay index (0-3) * @base: Overlay registers base address * @enabled: True if the overlay is enabled * @mode: Overlay blending mode (alpha blend or ROP3) * @alpha: Global alpha blending value (0-255, for alpha blending mode) * @rop3: Raster operation (for ROP3 mode) * @fb_mem: Frame buffer virtual memory address * @fb_size: Frame buffer size in bytes * @dma_handle: Frame buffer DMA address * @base_addr_y: Overlay base address (RGB or luma component) * @base_addr_c: Overlay base address (chroma component) * @pan_y_offset: Panning linear offset in bytes (luma component) * @format: Current pixelf format * @xres: Horizontal visible resolution * @xres_virtual: Horizontal total resolution * @yres: Vertical visible resolution * @yres_virtual: Vertical total resolution * @pitch: Overlay line pitch * @pos_x: Horizontal overlay position * @pos_y: Vertical overlay position */ struct sh_mobile_lcdc_overlay { struct sh_mobile_lcdc_chan *channel; const struct sh_mobile_lcdc_overlay_cfg *cfg; struct fb_info *info; unsigned int index; unsigned long base; bool enabled; enum sh_mobile_lcdc_overlay_mode mode; unsigned int alpha; unsigned int rop3; void *fb_mem; unsigned long fb_size; dma_addr_t dma_handle; unsigned long base_addr_y; unsigned long base_addr_c; unsigned long pan_y_offset; const struct sh_mobile_lcdc_format_info *format; unsigned int xres; unsigned int xres_virtual; unsigned int yres; unsigned int yres_virtual; unsigned int pitch; int pos_x; int pos_y; }; struct sh_mobile_lcdc_priv { void __iomem *base; int irq; atomic_t hw_usecnt; struct device *dev; struct clk *dot_clk; unsigned long lddckr; struct sh_mobile_lcdc_chan ch[2]; struct sh_mobile_lcdc_overlay overlays[4]; struct notifier_block notifier; int started; int forced_fourcc; /* 2 channel LCDC must share fourcc setting */ }; /* ----------------------------------------------------------------------------- * Registers access */ static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = { [LDDCKPAT1R] = 0x400, [LDDCKPAT2R] = 0x404, [LDMT1R] = 0x418, [LDMT2R] = 0x41c, [LDMT3R] = 0x420, [LDDFR] = 0x424, [LDSM1R] = 0x428, [LDSM2R] = 0x42c, [LDSA1R] = 0x430, [LDSA2R] = 0x434, [LDMLSR] = 0x438, [LDHCNR] = 0x448, [LDHSYNR] = 0x44c, [LDVLNR] = 0x450, [LDVSYNR] = 0x454, [LDPMR] = 0x460, [LDHAJR] = 0x4a0, }; static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = { [LDDCKPAT1R] = 0x408, [LDDCKPAT2R] = 0x40c, [LDMT1R] = 0x600, [LDMT2R] = 0x604, [LDMT3R] = 0x608, [LDDFR] = 0x60c, [LDSM1R] = 0x610, [LDSM2R] = 0x614, [LDSA1R] = 0x618, [LDMLSR] = 0x620, [LDHCNR] = 0x624, [LDHSYNR] = 0x628, [LDVLNR] = 0x62c, [LDVSYNR] = 0x630, [LDPMR] = 0x63c, }; static bool banked(int reg_nr) { switch (reg_nr) { case LDMT1R: case LDMT2R: case LDMT3R: case LDDFR: case LDSM1R: case LDSA1R: case LDSA2R: case LDMLSR: case LDHCNR: case LDHSYNR: case LDVLNR: case LDVSYNR: return true; } return false; } static int lcdc_chan_is_sublcd(struct sh_mobile_lcdc_chan *chan) { return chan->cfg->chan == LCDC_CHAN_SUBLCD; } static void lcdc_write_chan(struct sh_mobile_lcdc_chan *chan, int reg_nr, unsigned long data) { iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr]); if (banked(reg_nr)) iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + SIDE_B_OFFSET); } static void lcdc_write_chan_mirror(struct sh_mobile_lcdc_chan *chan, int reg_nr, unsigned long data) { iowrite32(data, chan->lcdc->base + chan->reg_offs[reg_nr] + MIRROR_OFFSET); } static unsigned long lcdc_read_chan(struct sh_mobile_lcdc_chan *chan, int reg_nr) { return ioread32(chan->lcdc->base + chan->reg_offs[reg_nr]); } static void lcdc_write_overlay(struct sh_mobile_lcdc_overlay *ovl, int reg, unsigned long data) { iowrite32(data, ovl->channel->lcdc->base + reg); iowrite32(data, ovl->channel->lcdc->base + reg + SIDE_B_OFFSET); } static void lcdc_write(struct sh_mobile_lcdc_priv *priv, unsigned long reg_offs, unsigned long data) { iowrite32(data, priv->base + reg_offs); } static unsigned long lcdc_read(struct sh_mobile_lcdc_priv *priv, unsigned long reg_offs) { return ioread32(priv->base + reg_offs); } static void lcdc_wait_bit(struct sh_mobile_lcdc_priv *priv, unsigned long reg_offs, unsigned long mask, unsigned long until) { while ((lcdc_read(priv, reg_offs) & mask) != until) cpu_relax(); } /* ----------------------------------------------------------------------------- * Clock management */ static void sh_mobile_lcdc_clk_on(struct sh_mobile_lcdc_priv *priv) { if (atomic_inc_and_test(&priv->hw_usecnt)) { if (priv->dot_clk) clk_prepare_enable(priv->dot_clk); pm_runtime_get_sync(priv->dev); } } static void sh_mobile_lcdc_clk_off(struct sh_mobile_lcdc_priv *priv) { if (atomic_sub_return(1, &priv->hw_usecnt) == -1) { pm_runtime_put(priv->dev); if (priv->dot_clk) clk_disable_unprepare(priv->dot_clk); } } static int sh_mobile_lcdc_setup_clocks(struct sh_mobile_lcdc_priv *priv, int clock_source) { struct clk *clk; char *str; switch (clock_source) { case LCDC_CLK_BUS: str = "bus_clk"; priv->lddckr = LDDCKR_ICKSEL_BUS; break; case LCDC_CLK_PERIPHERAL: str = "peripheral_clk"; priv->lddckr = LDDCKR_ICKSEL_MIPI; break; case LCDC_CLK_EXTERNAL: str = NULL; priv->lddckr = LDDCKR_ICKSEL_HDMI; break; default: return -EINVAL; } if (str == NULL) return 0; clk = clk_get(priv->dev, str); if (IS_ERR(clk)) { dev_err(priv->dev, "cannot get dot clock %s\n", str); return PTR_ERR(clk); } priv->dot_clk = clk; return 0; } /* ----------------------------------------------------------------------------- * Display, panel and deferred I/O */ static void lcdc_sys_write_index(void *handle, unsigned long data) { struct sh_mobile_lcdc_chan *ch = handle; lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT); lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); } static void lcdc_sys_write_data(void *handle, unsigned long data) { struct sh_mobile_lcdc_chan *ch = handle; lcdc_write(ch->lcdc, _LDDWD0R, data | LDDWDxR_WDACT | LDDWDxR_RSW); lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); lcdc_write(ch->lcdc, _LDDWAR, LDDWAR_WA | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); } static unsigned long lcdc_sys_read_data(void *handle) { struct sh_mobile_lcdc_chan *ch = handle; lcdc_write(ch->lcdc, _LDDRDR, LDDRDR_RSR); lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); lcdc_write(ch->lcdc, _LDDRAR, LDDRAR_RA | (lcdc_chan_is_sublcd(ch) ? 2 : 0)); udelay(1); lcdc_wait_bit(ch->lcdc, _LDSR, LDSR_AS, 0); return lcdc_read(ch->lcdc, _LDDRDR) & LDDRDR_DRD_MASK; } static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = { .write_index = lcdc_sys_write_index, .write_data = lcdc_sys_write_data, .read_data = lcdc_sys_read_data, }; static int sh_mobile_lcdc_sginit(struct fb_info *info, struct list_head *pagelist) { struct sh_mobile_lcdc_chan *ch = info->par; unsigned int nr_pages_max = ch->fb_size >> PAGE_SHIFT; struct page *page; int nr_pages = 0; sg_init_table(ch->sglist, nr_pages_max); list_for_each_entry(page, pagelist, lru) sg_set_page(&ch->sglist[nr_pages++], page, PAGE_SIZE, 0); return nr_pages; } static void sh_mobile_lcdc_deferred_io(struct fb_info *info, struct list_head *pagelist) { struct sh_mobile_lcdc_chan *ch = info->par; const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; /* enable clocks before accessing hardware */ sh_mobile_lcdc_clk_on(ch->lcdc); /* * It's possible to get here without anything on the pagelist via * sh_mobile_lcdc_deferred_io_touch() or via a userspace fsync() * invocation. In the former case, the acceleration routines are * stepped in to when using the framebuffer console causing the * workqueue to be scheduled without any dirty pages on the list. * * Despite this, a panel update is still needed given that the * acceleration routines have their own methods for writing in * that still need to be updated. * * The fsync() and empty pagelist case could be optimized for, * but we don't bother, as any application exhibiting such * behaviour is fundamentally broken anyways. */ if (!list_empty(pagelist)) { unsigned int nr_pages = sh_mobile_lcdc_sginit(info, pagelist); /* trigger panel update */ dma_map_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); if (panel->start_transfer) panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops); lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); dma_unmap_sg(ch->lcdc->dev, ch->sglist, nr_pages, DMA_TO_DEVICE); } else { if (panel->start_transfer) panel->start_transfer(ch, &sh_mobile_lcdc_sys_bus_ops); lcdc_write_chan(ch, LDSM2R, LDSM2R_OSTRG); } } static void sh_mobile_lcdc_deferred_io_touch(struct fb_info *info) { struct fb_deferred_io *fbdefio = info->fbdefio; if (fbdefio) schedule_delayed_work(&info->deferred_work, fbdefio->delay); } static void sh_mobile_lcdc_display_on(struct sh_mobile_lcdc_chan *ch) { const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; if (ch->tx_dev) { int ret; ret = ch->tx_dev->ops->display_on(ch->tx_dev); if (ret < 0) return; if (ret == SH_MOBILE_LCDC_DISPLAY_DISCONNECTED) ch->info->state = FBINFO_STATE_SUSPENDED; } /* HDMI must be enabled before LCDC configuration */ if (panel->display_on) panel->display_on(); } static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch) { const struct sh_mobile_lcdc_panel_cfg *panel = &ch->cfg->panel_cfg; if (panel->display_off) panel->display_off(); if (ch->tx_dev) ch->tx_dev->ops->display_off(ch->tx_dev); } static bool sh_mobile_lcdc_must_reconfigure(struct sh_mobile_lcdc_chan *ch, const struct fb_videomode *new_mode) { dev_dbg(ch->info->dev, "Old %ux%u, new %ux%u\n", ch->display.mode.xres, ch->display.mode.yres, new_mode->xres, new_mode->yres); /* It can be a different monitor with an equal video-mode */ if (fb_mode_is_equal(&ch->display.mode, new_mode)) return false; dev_dbg(ch->info->dev, "Switching %u -> %u lines\n", ch->display.mode.yres, new_mode->yres); ch->display.mode = *new_mode; return true; } static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var, struct fb_info *info); static int sh_mobile_lcdc_display_notify(struct sh_mobile_lcdc_chan *ch, enum sh_mobile_lcdc_entity_event event, const struct fb_videomode *mode, const struct fb_monspecs *monspec) { struct fb_info *info = ch->info; struct fb_var_screeninfo var; int ret = 0; switch (event) { case SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT: /* HDMI plug in */ console_lock(); if (lock_fb_info(info)) { ch->display.width = monspec->max_x * 10; ch->display.height = monspec->max_y * 10; if (!sh_mobile_lcdc_must_reconfigure(ch, mode) && info->state == FBINFO_STATE_RUNNING) { /* First activation with the default monitor. * Just turn on, if we run a resume here, the * logo disappears. */ info->var.width = ch->display.width; info->var.height = ch->display.height; sh_mobile_lcdc_display_on(ch); } else { /* New monitor or have to wake up */ fb_set_suspend(info, 0); } unlock_fb_info(info); } console_unlock(); break; case SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT: /* HDMI disconnect */ console_lock(); if (lock_fb_info(info)) { fb_set_suspend(info, 1); unlock_fb_info(info); } console_unlock(); break; case SH_MOBILE_LCDC_EVENT_DISPLAY_MODE: /* Validate a proposed new mode */ fb_videomode_to_var(&var, mode); var.bits_per_pixel = info->var.bits_per_pixel; var.grayscale = info->var.grayscale; ret = sh_mobile_lcdc_check_var(&var, info); break; } return ret; } /* ----------------------------------------------------------------------------- * Format helpers */ struct sh_mobile_lcdc_format_info { u32 fourcc; unsigned int bpp; bool yuv; u32 lddfr; }; static const struct sh_mobile_lcdc_format_info sh_mobile_format_infos[] = { { .fourcc = V4L2_PIX_FMT_RGB565, .bpp = 16, .yuv = false, .lddfr = LDDFR_PKF_RGB16, }, { .fourcc = V4L2_PIX_FMT_BGR24, .bpp = 24, .yuv = false, .lddfr = LDDFR_PKF_RGB24, }, { .fourcc = V4L2_PIX_FMT_BGR32, .bpp = 32, .yuv = false, .lddfr = LDDFR_PKF_ARGB32, }, { .fourcc = V4L2_PIX_FMT_NV12, .bpp = 12, .yuv = true, .lddfr = LDDFR_CC | LDDFR_YF_420, }, { .fourcc = V4L2_PIX_FMT_NV21, .bpp = 12, .yuv = true, .lddfr = LDDFR_CC | LDDFR_YF_420, }, { .fourcc = V4L2_PIX_FMT_NV16, .bpp = 16, .yuv = true, .lddfr = LDDFR_CC | LDDFR_YF_422, }, { .fourcc = V4L2_PIX_FMT_NV61, .bpp = 16, .yuv = true, .lddfr = LDDFR_CC | LDDFR_YF_422, }, { .fourcc = V4L2_PIX_FMT_NV24, .bpp = 24, .yuv = true, .lddfr = LDDFR_CC | LDDFR_YF_444, }, { .fourcc = V4L2_PIX_FMT_NV42, .bpp = 24, .yuv = true, .lddfr = LDDFR_CC | LDDFR_YF_444, }, }; static const struct sh_mobile_lcdc_format_info * sh_mobile_format_info(u32 fourcc) { unsigned int i; for (i = 0; i < ARRAY_SIZE(sh_mobile_format_infos); ++i) { if (sh_mobile_format_infos[i].fourcc == fourcc) return &sh_mobile_format_infos[i]; } return NULL; } static int sh_mobile_format_fourcc(const struct fb_var_screeninfo *var) { if (var->grayscale > 1) return var->grayscale; switch (var->bits_per_pixel) { case 16: return V4L2_PIX_FMT_RGB565; case 24: return V4L2_PIX_FMT_BGR24; case 32: return V4L2_PIX_FMT_BGR32; default: return 0; } } static int sh_mobile_format_is_fourcc(const struct fb_var_screeninfo *var) { return var->grayscale > 1; } /* ----------------------------------------------------------------------------- * Start, stop and IRQ */ static irqreturn_t sh_mobile_lcdc_irq(int irq, void *data) { struct sh_mobile_lcdc_priv *priv = data; struct sh_mobile_lcdc_chan *ch; unsigned long ldintr; int is_sub; int k; /* Acknowledge interrupts and disable further VSYNC End IRQs. */ ldintr = lcdc_read(priv, _LDINTR); lcdc_write(priv, _LDINTR, (ldintr ^ LDINTR_STATUS_MASK) & ~LDINTR_VEE); /* figure out if this interrupt is for main or sub lcd */ is_sub = (lcdc_read(priv, _LDSR) & LDSR_MSS) ? 1 : 0; /* wake up channel and disable clocks */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; /* Frame End */ if (ldintr & LDINTR_FS) { if (is_sub == lcdc_chan_is_sublcd(ch)) { ch->frame_end = 1; wake_up(&ch->frame_end_wait); sh_mobile_lcdc_clk_off(priv); } } /* VSYNC End */ if (ldintr & LDINTR_VES) complete(&ch->vsync_completion); } return IRQ_HANDLED; } static int sh_mobile_lcdc_wait_for_vsync(struct sh_mobile_lcdc_chan *ch) { unsigned long ldintr; int ret; /* Enable VSync End interrupt and be careful not to acknowledge any * pending interrupt. */ ldintr = lcdc_read(ch->lcdc, _LDINTR); ldintr |= LDINTR_VEE | LDINTR_STATUS_MASK; lcdc_write(ch->lcdc, _LDINTR, ldintr); ret = wait_for_completion_interruptible_timeout(&ch->vsync_completion, msecs_to_jiffies(100)); if (!ret) return -ETIMEDOUT; return 0; } static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv, int start) { unsigned long tmp = lcdc_read(priv, _LDCNT2R); int k; /* start or stop the lcdc */ if (start) lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO); else lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO); /* wait until power is applied/stopped on all channels */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled) while (1) { tmp = lcdc_read_chan(&priv->ch[k], LDPMR) & LDPMR_LPS; if (start && tmp == LDPMR_LPS) break; if (!start && tmp == 0) break; cpu_relax(); } if (!start) lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */ } static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) { const struct fb_var_screeninfo *var = &ch->info->var; const struct fb_videomode *mode = &ch->display.mode; unsigned long h_total, hsync_pos, display_h_total; u32 tmp; tmp = ch->ldmt1r_value; tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : LDMT1R_VPOL; tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : LDMT1R_HPOL; tmp |= (ch->cfg->flags & LCDC_FLAGS_DWPOL) ? LDMT1R_DWPOL : 0; tmp |= (ch->cfg->flags & LCDC_FLAGS_DIPOL) ? LDMT1R_DIPOL : 0; tmp |= (ch->cfg->flags & LCDC_FLAGS_DAPOL) ? LDMT1R_DAPOL : 0; tmp |= (ch->cfg->flags & LCDC_FLAGS_HSCNT) ? LDMT1R_HSCNT : 0; tmp |= (ch->cfg->flags & LCDC_FLAGS_DWCNT) ? LDMT1R_DWCNT : 0; lcdc_write_chan(ch, LDMT1R, tmp); /* setup SYS bus */ lcdc_write_chan(ch, LDMT2R, ch->cfg->sys_bus_cfg.ldmt2r); lcdc_write_chan(ch, LDMT3R, ch->cfg->sys_bus_cfg.ldmt3r); /* horizontal configuration */ h_total = mode->xres + mode->hsync_len + mode->left_margin + mode->right_margin; tmp = h_total / 8; /* HTCN */ tmp |= (min(mode->xres, ch->xres) / 8) << 16; /* HDCN */ lcdc_write_chan(ch, LDHCNR, tmp); hsync_pos = mode->xres + mode->right_margin; tmp = hsync_pos / 8; /* HSYNP */ tmp |= (mode->hsync_len / 8) << 16; /* HSYNW */ lcdc_write_chan(ch, LDHSYNR, tmp); /* vertical configuration */ tmp = mode->yres + mode->vsync_len + mode->upper_margin + mode->lower_margin; /* VTLN */ tmp |= min(mode->yres, ch->yres) << 16; /* VDLN */ lcdc_write_chan(ch, LDVLNR, tmp); tmp = mode->yres + mode->lower_margin; /* VSYNP */ tmp |= mode->vsync_len << 16; /* VSYNW */ lcdc_write_chan(ch, LDVSYNR, tmp); /* Adjust horizontal synchronisation for HDMI */ display_h_total = mode->xres + mode->hsync_len + mode->left_margin + mode->right_margin; tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16) | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7); lcdc_write_chan(ch, LDHAJR, tmp); lcdc_write_chan_mirror(ch, LDHAJR, tmp); } static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl) { u32 format = 0; if (!ovl->enabled) { lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index)); lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), 0); lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index)); return; } ovl->base_addr_y = ovl->dma_handle; ovl->base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual; switch (ovl->mode) { case LCDC_OVERLAY_BLEND: format = LDBBSIFR_EN | (ovl->alpha << LDBBSIFR_LAY_SHIFT); break; case LCDC_OVERLAY_ROP3: format = LDBBSIFR_EN | LDBBSIFR_BRSEL | (ovl->rop3 << LDBBSIFR_ROP3_SHIFT); break; } switch (ovl->format->fourcc) { case V4L2_PIX_FMT_RGB565: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV61: case V4L2_PIX_FMT_NV42: format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW; break; case V4L2_PIX_FMT_BGR24: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV24: format |= LDBBSIFR_SWPL | LDBBSIFR_SWPW | LDBBSIFR_SWPB; break; case V4L2_PIX_FMT_BGR32: default: format |= LDBBSIFR_SWPL; break; } switch (ovl->format->fourcc) { case V4L2_PIX_FMT_RGB565: format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB16; break; case V4L2_PIX_FMT_BGR24: format |= LDBBSIFR_AL_1 | LDBBSIFR_RY | LDBBSIFR_RPKF_RGB24; break; case V4L2_PIX_FMT_BGR32: format |= LDBBSIFR_AL_PK | LDBBSIFR_RY | LDDFR_PKF_ARGB32; break; case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_420; break; case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_422; break; case V4L2_PIX_FMT_NV24: case V4L2_PIX_FMT_NV42: format |= LDBBSIFR_AL_1 | LDBBSIFR_CHRR_444; break; } lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index)); lcdc_write_overlay(ovl, LDBnBSIFR(ovl->index), format); lcdc_write_overlay(ovl, LDBnBSSZR(ovl->index), (ovl->yres << LDBBSSZR_BVSS_SHIFT) | (ovl->xres << LDBBSSZR_BHSS_SHIFT)); lcdc_write_overlay(ovl, LDBnBLOCR(ovl->index), (ovl->pos_y << LDBBLOCR_CVLC_SHIFT) | (ovl->pos_x << LDBBLOCR_CHLC_SHIFT)); lcdc_write_overlay(ovl, LDBnBSMWR(ovl->index), ovl->pitch << LDBBSMWR_BSMW_SHIFT); lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y); lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c); lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index)); } /* * __sh_mobile_lcdc_start - Configure and start the LCDC * @priv: LCDC device * * Configure all enabled channels and start the LCDC device. All external * devices (clocks, MERAM, panels, ...) are not touched by this function. */ static void __sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) { struct sh_mobile_lcdc_chan *ch; unsigned long tmp; int k, m; /* Enable LCDC channels. Read data from external memory, avoid using the * BEU for now. */ lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled); /* Stop the LCDC first and disable all interrupts. */ sh_mobile_lcdc_start_stop(priv, 0); lcdc_write(priv, _LDINTR, 0); /* Configure power supply, dot clocks and start them. */ tmp = priv->lddckr; for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; /* Power supply */ lcdc_write_chan(ch, LDPMR, 0); m = ch->cfg->clock_divider; if (!m) continue; /* FIXME: sh7724 can only use 42, 48, 54 and 60 for the divider * denominator. */ lcdc_write_chan(ch, LDDCKPAT1R, 0); lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1); if (m == 1) m = LDDCKR_MOSEL; tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0); } lcdc_write(priv, _LDDCKR, tmp); lcdc_write(priv, _LDDCKSTPR, 0); lcdc_wait_bit(priv, _LDDCKSTPR, ~0, 0); /* Setup geometry, format, frame buffer memory and operation mode. */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; sh_mobile_lcdc_geometry(ch); tmp = ch->format->lddfr; if (ch->format->yuv) { switch (ch->colorspace) { case V4L2_COLORSPACE_REC709: tmp |= LDDFR_CF1; break; case V4L2_COLORSPACE_JPEG: tmp |= LDDFR_CF0; break; } } lcdc_write_chan(ch, LDDFR, tmp); lcdc_write_chan(ch, LDMLSR, ch->line_size); lcdc_write_chan(ch, LDSA1R, ch->base_addr_y); if (ch->format->yuv) lcdc_write_chan(ch, LDSA2R, ch->base_addr_c); /* When using deferred I/O mode, configure the LCDC for one-shot * operation and enable the frame end interrupt. Otherwise use * continuous read mode. */ if (ch->ldmt1r_value & LDMT1R_IFM && ch->cfg->sys_bus_cfg.deferred_io_msec) { lcdc_write_chan(ch, LDSM1R, LDSM1R_OS); lcdc_write(priv, _LDINTR, LDINTR_FE); } else { lcdc_write_chan(ch, LDSM1R, 0); } } /* Word and long word swap. */ switch (priv->ch[0].format->fourcc) { case V4L2_PIX_FMT_RGB565: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV61: case V4L2_PIX_FMT_NV42: tmp = LDDDSR_LS | LDDDSR_WS; break; case V4L2_PIX_FMT_BGR24: case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV24: tmp = LDDDSR_LS | LDDDSR_WS | LDDDSR_BS; break; case V4L2_PIX_FMT_BGR32: default: tmp = LDDDSR_LS; break; } lcdc_write(priv, _LDDDSR, tmp); /* Enable the display output. */ lcdc_write(priv, _LDCNT1R, LDCNT1R_DE); sh_mobile_lcdc_start_stop(priv, 1); priv->started = 1; } static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) { struct sh_mobile_lcdc_chan *ch; unsigned long tmp; int ret; int k; /* enable clocks before accessing the hardware */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { if (priv->ch[k].enabled) sh_mobile_lcdc_clk_on(priv); } /* reset */ lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR); lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0); for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { const struct sh_mobile_lcdc_panel_cfg *panel; ch = &priv->ch[k]; if (!ch->enabled) continue; panel = &ch->cfg->panel_cfg; if (panel->setup_sys) { ret = panel->setup_sys(ch, &sh_mobile_lcdc_sys_bus_ops); if (ret) return ret; } } /* Compute frame buffer base address and pitch for each channel. */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; ch->base_addr_y = ch->dma_handle; ch->base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual; ch->line_size = ch->pitch; } for (k = 0; k < ARRAY_SIZE(priv->overlays); ++k) { struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[k]; sh_mobile_lcdc_overlay_setup(ovl); } /* Start the LCDC. */ __sh_mobile_lcdc_start(priv); /* Setup deferred I/O, tell the board code to enable the panels, and * turn backlight on. */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; tmp = ch->cfg->sys_bus_cfg.deferred_io_msec; if (ch->ldmt1r_value & LDMT1R_IFM && tmp) { ch->defio.deferred_io = sh_mobile_lcdc_deferred_io; ch->defio.delay = msecs_to_jiffies(tmp); ch->info->fbdefio = &ch->defio; fb_deferred_io_init(ch->info); } sh_mobile_lcdc_display_on(ch); if (ch->bl) { ch->bl->props.power = FB_BLANK_UNBLANK; backlight_update_status(ch->bl); } } return 0; } static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) { struct sh_mobile_lcdc_chan *ch; int k; /* clean up deferred io and ask board code to disable panel */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; if (!ch->enabled) continue; /* deferred io mode: * flush frame, and wait for frame end interrupt * clean up deferred io and enable clock */ if (ch->info && ch->info->fbdefio) { ch->frame_end = 0; schedule_delayed_work(&ch->info->deferred_work, 0); wait_event(ch->frame_end_wait, ch->frame_end); fb_deferred_io_cleanup(ch->info); ch->info->fbdefio = NULL; sh_mobile_lcdc_clk_on(priv); } if (ch->bl) { ch->bl->props.power = FB_BLANK_POWERDOWN; backlight_update_status(ch->bl); } sh_mobile_lcdc_display_off(ch); } /* stop the lcdc */ if (priv->started) { sh_mobile_lcdc_start_stop(priv, 0); priv->started = 0; } /* stop clocks */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) if (priv->ch[k].enabled) sh_mobile_lcdc_clk_off(priv); } static int __sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { if (var->xres > MAX_XRES || var->yres > MAX_YRES) return -EINVAL; /* Make sure the virtual resolution is at least as big as the visible * resolution. */ if (var->xres_virtual < var->xres) var->xres_virtual = var->xres; if (var->yres_virtual < var->yres) var->yres_virtual = var->yres; if (sh_mobile_format_is_fourcc(var)) { const struct sh_mobile_lcdc_format_info *format; format = sh_mobile_format_info(var->grayscale); if (format == NULL) return -EINVAL; var->bits_per_pixel = format->bpp; /* Default to RGB and JPEG color-spaces for RGB and YUV formats * respectively. */ if (!format->yuv) var->colorspace = V4L2_COLORSPACE_SRGB; else if (var->colorspace != V4L2_COLORSPACE_REC709) var->colorspace = V4L2_COLORSPACE_JPEG; } else { if (var->bits_per_pixel <= 16) { /* RGB 565 */ var->bits_per_pixel = 16; var->red.offset = 11; var->red.length = 5; var->green.offset = 5; var->green.length = 6; var->blue.offset = 0; var->blue.length = 5; var->transp.offset = 0; var->transp.length = 0; } else if (var->bits_per_pixel <= 24) { /* RGB 888 */ var->bits_per_pixel = 24; var->red.offset = 16; var->red.length = 8; var->green.offset = 8; var->green.length = 8; var->blue.offset = 0; var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; } else if (var->bits_per_pixel <= 32) { /* RGBA 888 */ var->bits_per_pixel = 32; var->red.offset = 16; var->red.length = 8; var->green.offset = 8; var->green.length = 8; var->blue.offset = 0; var->blue.length = 8; var->transp.offset = 24; var->transp.length = 8; } else return -EINVAL; var->red.msb_right = 0; var->green.msb_right = 0; var->blue.msb_right = 0; var->transp.msb_right = 0; } /* Make sure we don't exceed our allocated memory. */ if (var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8 > info->fix.smem_len) return -EINVAL; return 0; } /* ----------------------------------------------------------------------------- * Frame buffer operations - Overlays */ static ssize_t overlay_alpha_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->alpha); } static ssize_t overlay_alpha_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; unsigned int alpha; char *endp; alpha = simple_strtoul(buf, &endp, 10); if (isspace(*endp)) endp++; if (endp - buf != count) return -EINVAL; if (alpha > 255) return -EINVAL; if (ovl->alpha != alpha) { ovl->alpha = alpha; if (ovl->mode == LCDC_OVERLAY_BLEND && ovl->enabled) sh_mobile_lcdc_overlay_setup(ovl); } return count; } static ssize_t overlay_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->mode); } static ssize_t overlay_mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; unsigned int mode; char *endp; mode = simple_strtoul(buf, &endp, 10); if (isspace(*endp)) endp++; if (endp - buf != count) return -EINVAL; if (mode != LCDC_OVERLAY_BLEND && mode != LCDC_OVERLAY_ROP3) return -EINVAL; if (ovl->mode != mode) { ovl->mode = mode; if (ovl->enabled) sh_mobile_lcdc_overlay_setup(ovl); } return count; } static ssize_t overlay_position_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; return scnprintf(buf, PAGE_SIZE, "%d,%d\n", ovl->pos_x, ovl->pos_y); } static ssize_t overlay_position_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; char *endp; int pos_x; int pos_y; pos_x = simple_strtol(buf, &endp, 10); if (*endp != ',') return -EINVAL; pos_y = simple_strtol(endp + 1, &endp, 10); if (isspace(*endp)) endp++; if (endp - buf != count) return -EINVAL; if (ovl->pos_x != pos_x || ovl->pos_y != pos_y) { ovl->pos_x = pos_x; ovl->pos_y = pos_y; if (ovl->enabled) sh_mobile_lcdc_overlay_setup(ovl); } return count; } static ssize_t overlay_rop3_show(struct device *dev, struct device_attribute *attr, char *buf) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; return scnprintf(buf, PAGE_SIZE, "%u\n", ovl->rop3); } static ssize_t overlay_rop3_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fb_info *info = dev_get_drvdata(dev); struct sh_mobile_lcdc_overlay *ovl = info->par; unsigned int rop3; char *endp; rop3 = simple_strtoul(buf, &endp, 10); if (isspace(*endp)) endp++; if (endp - buf != count) return -EINVAL; if (rop3 > 255) return -EINVAL; if (ovl->rop3 != rop3) { ovl->rop3 = rop3; if (ovl->mode == LCDC_OVERLAY_ROP3 && ovl->enabled) sh_mobile_lcdc_overlay_setup(ovl); } return count; } static const struct device_attribute overlay_sysfs_attrs[] = { __ATTR(ovl_alpha, S_IRUGO|S_IWUSR, overlay_alpha_show, overlay_alpha_store), __ATTR(ovl_mode, S_IRUGO|S_IWUSR, overlay_mode_show, overlay_mode_store), __ATTR(ovl_position, S_IRUGO|S_IWUSR, overlay_position_show, overlay_position_store), __ATTR(ovl_rop3, S_IRUGO|S_IWUSR, overlay_rop3_show, overlay_rop3_store), }; static const struct fb_fix_screeninfo sh_mobile_lcdc_overlay_fix = { .id = "SH Mobile LCDC", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_TRUECOLOR, .accel = FB_ACCEL_NONE, .xpanstep = 1, .ypanstep = 1, .ywrapstep = 0, .capabilities = FB_CAP_FOURCC, }; static int sh_mobile_lcdc_overlay_pan(struct fb_var_screeninfo *var, struct fb_info *info) { struct sh_mobile_lcdc_overlay *ovl = info->par; unsigned long base_addr_y; unsigned long base_addr_c; unsigned long y_offset; unsigned long c_offset; if (!ovl->format->yuv) { y_offset = (var->yoffset * ovl->xres_virtual + var->xoffset) * ovl->format->bpp / 8; c_offset = 0; } else { unsigned int xsub = ovl->format->bpp < 24 ? 2 : 1; unsigned int ysub = ovl->format->bpp < 16 ? 2 : 1; y_offset = var->yoffset * ovl->xres_virtual + var->xoffset; c_offset = var->yoffset / ysub * ovl->xres_virtual * 2 / xsub + var->xoffset * 2 / xsub; } /* If the Y offset hasn't changed, the C offset hasn't either. There's * nothing to do in that case. */ if (y_offset == ovl->pan_y_offset) return 0; /* Set the source address for the next refresh */ base_addr_y = ovl->dma_handle + y_offset; base_addr_c = ovl->dma_handle + ovl->xres_virtual * ovl->yres_virtual + c_offset; ovl->base_addr_y = base_addr_y; ovl->base_addr_c = base_addr_c; ovl->pan_y_offset = y_offset; lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPC(ovl->index)); lcdc_write_overlay(ovl, LDBnBSAYR(ovl->index), ovl->base_addr_y); lcdc_write_overlay(ovl, LDBnBSACR(ovl->index), ovl->base_addr_c); lcdc_write(ovl->channel->lcdc, LDBCR, LDBCR_UPF(ovl->index) | LDBCR_UPD(ovl->index)); return 0; } static int sh_mobile_lcdc_overlay_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct sh_mobile_lcdc_overlay *ovl = info->par; switch (cmd) { case FBIO_WAITFORVSYNC: return sh_mobile_lcdc_wait_for_vsync(ovl->channel); default: return -ENOIOCTLCMD; } } static int sh_mobile_lcdc_overlay_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { return __sh_mobile_lcdc_check_var(var, info); } static int sh_mobile_lcdc_overlay_set_par(struct fb_info *info) { struct sh_mobile_lcdc_overlay *ovl = info->par; ovl->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var)); ovl->xres = info->var.xres; ovl->xres_virtual = info->var.xres_virtual; ovl->yres = info->var.yres; ovl->yres_virtual = info->var.yres_virtual; if (ovl->format->yuv) ovl->pitch = info->var.xres_virtual; else ovl->pitch = info->var.xres_virtual * ovl->format->bpp / 8; sh_mobile_lcdc_overlay_setup(ovl); info->fix.line_length = ovl->pitch; if (sh_mobile_format_is_fourcc(&info->var)) { info->fix.type = FB_TYPE_FOURCC; info->fix.visual = FB_VISUAL_FOURCC; } else { info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.visual = FB_VISUAL_TRUECOLOR; } return 0; } /* Overlay blanking. Disable the overlay when blanked. */ static int sh_mobile_lcdc_overlay_blank(int blank, struct fb_info *info) { struct sh_mobile_lcdc_overlay *ovl = info->par; ovl->enabled = !blank; sh_mobile_lcdc_overlay_setup(ovl); /* Prevent the backlight from receiving a blanking event by returning * a non-zero value. */ return 1; } static int sh_mobile_lcdc_overlay_mmap(struct fb_info *info, struct vm_area_struct *vma) { struct sh_mobile_lcdc_overlay *ovl = info->par; return dma_mmap_coherent(ovl->channel->lcdc->dev, vma, ovl->fb_mem, ovl->dma_handle, ovl->fb_size); } static struct fb_ops sh_mobile_lcdc_overlay_ops = { .owner = THIS_MODULE, .fb_read = fb_sys_read, .fb_write = fb_sys_write, .fb_fillrect = sys_fillrect, .fb_copyarea = sys_copyarea, .fb_imageblit = sys_imageblit, .fb_blank = sh_mobile_lcdc_overlay_blank, .fb_pan_display = sh_mobile_lcdc_overlay_pan, .fb_ioctl = sh_mobile_lcdc_overlay_ioctl, .fb_check_var = sh_mobile_lcdc_overlay_check_var, .fb_set_par = sh_mobile_lcdc_overlay_set_par, .fb_mmap = sh_mobile_lcdc_overlay_mmap, }; static void sh_mobile_lcdc_overlay_fb_unregister(struct sh_mobile_lcdc_overlay *ovl) { struct fb_info *info = ovl->info; if (info == NULL || info->dev == NULL) return; unregister_framebuffer(ovl->info); } static int sh_mobile_lcdc_overlay_fb_register(struct sh_mobile_lcdc_overlay *ovl) { struct sh_mobile_lcdc_priv *lcdc = ovl->channel->lcdc; struct fb_info *info = ovl->info; unsigned int i; int ret; if (info == NULL) return 0; ret = register_framebuffer(info); if (ret < 0) return ret; dev_info(lcdc->dev, "registered %s/overlay %u as %dx%d %dbpp.\n", dev_name(lcdc->dev), ovl->index, info->var.xres, info->var.yres, info->var.bits_per_pixel); for (i = 0; i < ARRAY_SIZE(overlay_sysfs_attrs); ++i) { ret = device_create_file(info->dev, &overlay_sysfs_attrs[i]); if (ret < 0) return ret; } return 0; } static void sh_mobile_lcdc_overlay_fb_cleanup(struct sh_mobile_lcdc_overlay *ovl) { struct fb_info *info = ovl->info; if (info == NULL || info->device == NULL) return; framebuffer_release(info); } static int sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl) { struct sh_mobile_lcdc_priv *priv = ovl->channel->lcdc; struct fb_var_screeninfo *var; struct fb_info *info; /* Allocate and initialize the frame buffer device. */ info = framebuffer_alloc(0, priv->dev); if (info == NULL) { dev_err(priv->dev, "unable to allocate fb_info\n"); return -ENOMEM; } ovl->info = info; info->flags = FBINFO_FLAG_DEFAULT; info->fbops = &sh_mobile_lcdc_overlay_ops; info->device = priv->dev; info->screen_base = ovl->fb_mem; info->par = ovl; /* Initialize fixed screen information. Restrict pan to 2 lines steps * for NV12 and NV21. */ info->fix = sh_mobile_lcdc_overlay_fix; snprintf(info->fix.id, sizeof(info->fix.id), "SH Mobile LCDC Overlay %u", ovl->index); info->fix.smem_start = ovl->dma_handle; info->fix.smem_len = ovl->fb_size; info->fix.line_length = ovl->pitch; if (ovl->format->yuv) info->fix.visual = FB_VISUAL_FOURCC; else info->fix.visual = FB_VISUAL_TRUECOLOR; switch (ovl->format->fourcc) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: info->fix.ypanstep = 2; case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: info->fix.xpanstep = 2; } /* Initialize variable screen information. */ var = &info->var; memset(var, 0, sizeof(*var)); var->xres = ovl->xres; var->yres = ovl->yres; var->xres_virtual = ovl->xres_virtual; var->yres_virtual = ovl->yres_virtual; var->activate = FB_ACTIVATE_NOW; /* Use the legacy API by default for RGB formats, and the FOURCC API * for YUV formats. */ if (!ovl->format->yuv) var->bits_per_pixel = ovl->format->bpp; else var->grayscale = ovl->format->fourcc; return sh_mobile_lcdc_overlay_check_var(var, info); } /* ----------------------------------------------------------------------------- * Frame buffer operations - main frame buffer */ static int sh_mobile_lcdc_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { u32 *palette = info->pseudo_palette; if (regno >= PALETTE_NR) return -EINVAL; /* only FB_VISUAL_TRUECOLOR supported */ red >>= 16 - info->var.red.length; green >>= 16 - info->var.green.length; blue >>= 16 - info->var.blue.length; transp >>= 16 - info->var.transp.length; palette[regno] = (red << info->var.red.offset) | (green << info->var.green.offset) | (blue << info->var.blue.offset) | (transp << info->var.transp.offset); return 0; } static const struct fb_fix_screeninfo sh_mobile_lcdc_fix = { .id = "SH Mobile LCDC", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_TRUECOLOR, .accel = FB_ACCEL_NONE, .xpanstep = 1, .ypanstep = 1, .ywrapstep = 0, .capabilities = FB_CAP_FOURCC, }; static void sh_mobile_lcdc_fillrect(struct fb_info *info, const struct fb_fillrect *rect) { sys_fillrect(info, rect); sh_mobile_lcdc_deferred_io_touch(info); } static void sh_mobile_lcdc_copyarea(struct fb_info *info, const struct fb_copyarea *area) { sys_copyarea(info, area); sh_mobile_lcdc_deferred_io_touch(info); } static void sh_mobile_lcdc_imageblit(struct fb_info *info, const struct fb_image *image) { sys_imageblit(info, image); sh_mobile_lcdc_deferred_io_touch(info); } static int sh_mobile_lcdc_pan(struct fb_var_screeninfo *var, struct fb_info *info) { struct sh_mobile_lcdc_chan *ch = info->par; struct sh_mobile_lcdc_priv *priv = ch->lcdc; unsigned long ldrcntr; unsigned long base_addr_y, base_addr_c; unsigned long y_offset; unsigned long c_offset; if (!ch->format->yuv) { y_offset = (var->yoffset * ch->xres_virtual + var->xoffset) * ch->format->bpp / 8; c_offset = 0; } else { unsigned int xsub = ch->format->bpp < 24 ? 2 : 1; unsigned int ysub = ch->format->bpp < 16 ? 2 : 1; y_offset = var->yoffset * ch->xres_virtual + var->xoffset; c_offset = var->yoffset / ysub * ch->xres_virtual * 2 / xsub + var->xoffset * 2 / xsub; } /* If the Y offset hasn't changed, the C offset hasn't either. There's * nothing to do in that case. */ if (y_offset == ch->pan_y_offset) return 0; /* Set the source address for the next refresh */ base_addr_y = ch->dma_handle + y_offset; base_addr_c = ch->dma_handle + ch->xres_virtual * ch->yres_virtual + c_offset; ch->base_addr_y = base_addr_y; ch->base_addr_c = base_addr_c; ch->pan_y_offset = y_offset; lcdc_write_chan_mirror(ch, LDSA1R, base_addr_y); if (ch->format->yuv) lcdc_write_chan_mirror(ch, LDSA2R, base_addr_c); ldrcntr = lcdc_read(priv, _LDRCNTR); if (lcdc_chan_is_sublcd(ch)) lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_SRS); else lcdc_write(ch->lcdc, _LDRCNTR, ldrcntr ^ LDRCNTR_MRS); sh_mobile_lcdc_deferred_io_touch(info); return 0; } static int sh_mobile_lcdc_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct sh_mobile_lcdc_chan *ch = info->par; int retval; switch (cmd) { case FBIO_WAITFORVSYNC: retval = sh_mobile_lcdc_wait_for_vsync(ch); break; default: retval = -ENOIOCTLCMD; break; } return retval; } static void sh_mobile_fb_reconfig(struct fb_info *info) { struct sh_mobile_lcdc_chan *ch = info->par; struct fb_var_screeninfo var; struct fb_videomode mode; struct fb_event event; int evnt = FB_EVENT_MODE_CHANGE_ALL; if (ch->use_count > 1 || (ch->use_count == 1 && !info->fbcon_par)) /* More framebuffer users are active */ return; fb_var_to_videomode(&mode, &info->var); if (fb_mode_is_equal(&ch->display.mode, &mode)) return; /* Display has been re-plugged, framebuffer is free now, reconfigure */ var = info->var; fb_videomode_to_var(&var, &ch->display.mode); var.width = ch->display.width; var.height = ch->display.height; var.activate = FB_ACTIVATE_NOW; if (fb_set_var(info, &var) < 0) /* Couldn't reconfigure, hopefully, can continue as before */ return; /* * fb_set_var() calls the notifier change internally, only if * FBINFO_MISC_USEREVENT flag is set. Since we do not want to fake a * user event, we have to call the chain ourselves. */ event.info = info; event.data = &ch->display.mode; fb_notifier_call_chain(evnt, &event); } /* * Locking: both .fb_release() and .fb_open() are called with info->lock held if * user == 1, or with console sem held, if user == 0. */ static int sh_mobile_lcdc_release(struct fb_info *info, int user) { struct sh_mobile_lcdc_chan *ch = info->par; mutex_lock(&ch->open_lock); dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); ch->use_count--; /* Nothing to reconfigure, when called from fbcon */ if (user) { console_lock(); sh_mobile_fb_reconfig(info); console_unlock(); } mutex_unlock(&ch->open_lock); return 0; } static int sh_mobile_lcdc_open(struct fb_info *info, int user) { struct sh_mobile_lcdc_chan *ch = info->par; mutex_lock(&ch->open_lock); ch->use_count++; dev_dbg(info->dev, "%s(): %d users\n", __func__, ch->use_count); mutex_unlock(&ch->open_lock); return 0; } static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { struct sh_mobile_lcdc_chan *ch = info->par; struct sh_mobile_lcdc_priv *p = ch->lcdc; unsigned int best_dist = (unsigned int)-1; unsigned int best_xres = 0; unsigned int best_yres = 0; unsigned int i; int ret; /* If board code provides us with a list of available modes, make sure * we use one of them. Find the mode closest to the requested one. The * distance between two modes is defined as the size of the * non-overlapping parts of the two rectangles. */ for (i = 0; i < ch->cfg->num_modes; ++i) { const struct fb_videomode *mode = &ch->cfg->lcd_modes[i]; unsigned int dist; /* We can only round up. */ if (var->xres > mode->xres || var->yres > mode->yres) continue; dist = var->xres * var->yres + mode->xres * mode->yres - 2 * min(var->xres, mode->xres) * min(var->yres, mode->yres); if (dist < best_dist) { best_xres = mode->xres; best_yres = mode->yres; best_dist = dist; } } /* If no available mode can be used, return an error. */ if (ch->cfg->num_modes != 0) { if (best_dist == (unsigned int)-1) return -EINVAL; var->xres = best_xres; var->yres = best_yres; } ret = __sh_mobile_lcdc_check_var(var, info); if (ret < 0) return ret; /* only accept the forced_fourcc for dual channel configurations */ if (p->forced_fourcc && p->forced_fourcc != sh_mobile_format_fourcc(var)) return -EINVAL; return 0; } static int sh_mobile_lcdc_set_par(struct fb_info *info) { struct sh_mobile_lcdc_chan *ch = info->par; int ret; sh_mobile_lcdc_stop(ch->lcdc); ch->format = sh_mobile_format_info(sh_mobile_format_fourcc(&info->var)); ch->colorspace = info->var.colorspace; ch->xres = info->var.xres; ch->xres_virtual = info->var.xres_virtual; ch->yres = info->var.yres; ch->yres_virtual = info->var.yres_virtual; if (ch->format->yuv) ch->pitch = info->var.xres_virtual; else ch->pitch = info->var.xres_virtual * ch->format->bpp / 8; ret = sh_mobile_lcdc_start(ch->lcdc); if (ret < 0) dev_err(info->dev, "%s: unable to restart LCDC\n", __func__); info->fix.line_length = ch->pitch; if (sh_mobile_format_is_fourcc(&info->var)) { info->fix.type = FB_TYPE_FOURCC; info->fix.visual = FB_VISUAL_FOURCC; } else { info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.visual = FB_VISUAL_TRUECOLOR; } return ret; } /* * Screen blanking. Behavior is as follows: * FB_BLANK_UNBLANK: screen unblanked, clocks enabled * FB_BLANK_NORMAL: screen blanked, clocks enabled * FB_BLANK_VSYNC, * FB_BLANK_HSYNC, * FB_BLANK_POWEROFF: screen blanked, clocks disabled */ static int sh_mobile_lcdc_blank(int blank, struct fb_info *info) { struct sh_mobile_lcdc_chan *ch = info->par; struct sh_mobile_lcdc_priv *p = ch->lcdc; /* blank the screen? */ if (blank > FB_BLANK_UNBLANK && ch->blank_status == FB_BLANK_UNBLANK) { struct fb_fillrect rect = { .width = ch->xres, .height = ch->yres, }; sh_mobile_lcdc_fillrect(info, &rect); } /* turn clocks on? */ if (blank <= FB_BLANK_NORMAL && ch->blank_status > FB_BLANK_NORMAL) { sh_mobile_lcdc_clk_on(p); } /* turn clocks off? */ if (blank > FB_BLANK_NORMAL && ch->blank_status <= FB_BLANK_NORMAL) { /* make sure the screen is updated with the black fill before * switching the clocks off. one vsync is not enough since * blanking may occur in the middle of a refresh. deferred io * mode will reenable the clocks and update the screen in time, * so it does not need this. */ if (!info->fbdefio) { sh_mobile_lcdc_wait_for_vsync(ch); sh_mobile_lcdc_wait_for_vsync(ch); } sh_mobile_lcdc_clk_off(p); } ch->blank_status = blank; return 0; } static int sh_mobile_lcdc_mmap(struct fb_info *info, struct vm_area_struct *vma) { struct sh_mobile_lcdc_chan *ch = info->par; return dma_mmap_coherent(ch->lcdc->dev, vma, ch->fb_mem, ch->dma_handle, ch->fb_size); } static struct fb_ops sh_mobile_lcdc_ops = { .owner = THIS_MODULE, .fb_setcolreg = sh_mobile_lcdc_setcolreg, .fb_read = fb_sys_read, .fb_write = fb_sys_write, .fb_fillrect = sh_mobile_lcdc_fillrect, .fb_copyarea = sh_mobile_lcdc_copyarea, .fb_imageblit = sh_mobile_lcdc_imageblit, .fb_blank = sh_mobile_lcdc_blank, .fb_pan_display = sh_mobile_lcdc_pan, .fb_ioctl = sh_mobile_lcdc_ioctl, .fb_open = sh_mobile_lcdc_open, .fb_release = sh_mobile_lcdc_release, .fb_check_var = sh_mobile_lcdc_check_var, .fb_set_par = sh_mobile_lcdc_set_par, .fb_mmap = sh_mobile_lcdc_mmap, }; static void sh_mobile_lcdc_channel_fb_unregister(struct sh_mobile_lcdc_chan *ch) { if (ch->info && ch->info->dev) unregister_framebuffer(ch->info); } static int sh_mobile_lcdc_channel_fb_register(struct sh_mobile_lcdc_chan *ch) { struct fb_info *info = ch->info; int ret; if (info->fbdefio) { ch->sglist = vmalloc(sizeof(struct scatterlist) * ch->fb_size >> PAGE_SHIFT); if (!ch->sglist) return -ENOMEM; } info->bl_dev = ch->bl; ret = register_framebuffer(info); if (ret < 0) return ret; dev_info(ch->lcdc->dev, "registered %s/%s as %dx%d %dbpp.\n", dev_name(ch->lcdc->dev), (ch->cfg->chan == LCDC_CHAN_MAINLCD) ? "mainlcd" : "sublcd", info->var.xres, info->var.yres, info->var.bits_per_pixel); /* deferred io mode: disable clock to save power */ if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED) sh_mobile_lcdc_clk_off(ch->lcdc); return ret; } static void sh_mobile_lcdc_channel_fb_cleanup(struct sh_mobile_lcdc_chan *ch) { struct fb_info *info = ch->info; if (!info || !info->device) return; vfree(ch->sglist); fb_dealloc_cmap(&info->cmap); framebuffer_release(info); } static int sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch, const struct fb_videomode *modes, unsigned int num_modes) { struct sh_mobile_lcdc_priv *priv = ch->lcdc; struct fb_var_screeninfo *var; struct fb_info *info; int ret; /* Allocate and initialize the frame buffer device. Create the modes * list and allocate the color map. */ info = framebuffer_alloc(0, priv->dev); if (info == NULL) { dev_err(priv->dev, "unable to allocate fb_info\n"); return -ENOMEM; } ch->info = info; info->flags = FBINFO_FLAG_DEFAULT; info->fbops = &sh_mobile_lcdc_ops; info->device = priv->dev; info->screen_base = ch->fb_mem; info->pseudo_palette = &ch->pseudo_palette; info->par = ch; fb_videomode_to_modelist(modes, num_modes, &info->modelist); ret = fb_alloc_cmap(&info->cmap, PALETTE_NR, 0); if (ret < 0) { dev_err(priv->dev, "unable to allocate cmap\n"); return ret; } /* Initialize fixed screen information. Restrict pan to 2 lines steps * for NV12 and NV21. */ info->fix = sh_mobile_lcdc_fix; info->fix.smem_start = ch->dma_handle; info->fix.smem_len = ch->fb_size; info->fix.line_length = ch->pitch; if (ch->format->yuv) info->fix.visual = FB_VISUAL_FOURCC; else info->fix.visual = FB_VISUAL_TRUECOLOR; switch (ch->format->fourcc) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: info->fix.ypanstep = 2; case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: info->fix.xpanstep = 2; } /* Initialize variable screen information using the first mode as * default. */ var = &info->var; fb_videomode_to_var(var, modes); var->width = ch->display.width; var->height = ch->display.height; var->xres_virtual = ch->xres_virtual; var->yres_virtual = ch->yres_virtual; var->activate = FB_ACTIVATE_NOW; /* Use the legacy API by default for RGB formats, and the FOURCC API * for YUV formats. */ if (!ch->format->yuv) var->bits_per_pixel = ch->format->bpp; else var->grayscale = ch->format->fourcc; ret = sh_mobile_lcdc_check_var(var, info); if (ret) return ret; return 0; } /* ----------------------------------------------------------------------------- * Backlight */ static int sh_mobile_lcdc_update_bl(struct backlight_device *bdev) { struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); int brightness = bdev->props.brightness; if (bdev->props.power != FB_BLANK_UNBLANK || bdev->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK)) brightness = 0; ch->bl_brightness = brightness; return ch->cfg->bl_info.set_brightness(brightness); } static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev) { struct sh_mobile_lcdc_chan *ch = bl_get_data(bdev); return ch->bl_brightness; } static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev, struct fb_info *info) { return (info->bl_dev == bdev); } static const struct backlight_ops sh_mobile_lcdc_bl_ops = { .options = BL_CORE_SUSPENDRESUME, .update_status = sh_mobile_lcdc_update_bl, .get_brightness = sh_mobile_lcdc_get_brightness, .check_fb = sh_mobile_lcdc_check_fb, }; static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent, struct sh_mobile_lcdc_chan *ch) { struct backlight_device *bl; bl = backlight_device_register(ch->cfg->bl_info.name, parent, ch, &sh_mobile_lcdc_bl_ops, NULL); if (IS_ERR(bl)) { dev_err(parent, "unable to register backlight device: %ld\n", PTR_ERR(bl)); return NULL; } bl->props.max_brightness = ch->cfg->bl_info.max_brightness; bl->props.brightness = bl->props.max_brightness; backlight_update_status(bl); return bl; } static void sh_mobile_lcdc_bl_remove(struct backlight_device *bdev) { backlight_device_unregister(bdev); } /* ----------------------------------------------------------------------------- * Power management */ static int sh_mobile_lcdc_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); sh_mobile_lcdc_stop(platform_get_drvdata(pdev)); return 0; } static int sh_mobile_lcdc_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); return sh_mobile_lcdc_start(platform_get_drvdata(pdev)); } static int sh_mobile_lcdc_runtime_suspend(struct device *dev) { struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev); /* turn off LCDC hardware */ lcdc_write(priv, _LDCNT1R, 0); return 0; } static int sh_mobile_lcdc_runtime_resume(struct device *dev) { struct sh_mobile_lcdc_priv *priv = dev_get_drvdata(dev); __sh_mobile_lcdc_start(priv); return 0; } static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = { .suspend = sh_mobile_lcdc_suspend, .resume = sh_mobile_lcdc_resume, .runtime_suspend = sh_mobile_lcdc_runtime_suspend, .runtime_resume = sh_mobile_lcdc_runtime_resume, }; /* ----------------------------------------------------------------------------- * Framebuffer notifier */ /* locking: called with info->lock held */ static int sh_mobile_lcdc_notify(struct notifier_block *nb, unsigned long action, void *data) { struct fb_event *event = data; struct fb_info *info = event->info; struct sh_mobile_lcdc_chan *ch = info->par; if (&ch->lcdc->notifier != nb) return NOTIFY_DONE; dev_dbg(info->dev, "%s(): action = %lu, data = %p\n", __func__, action, event->data); switch(action) { case FB_EVENT_SUSPEND: sh_mobile_lcdc_display_off(ch); sh_mobile_lcdc_stop(ch->lcdc); break; case FB_EVENT_RESUME: mutex_lock(&ch->open_lock); sh_mobile_fb_reconfig(info); mutex_unlock(&ch->open_lock); sh_mobile_lcdc_display_on(ch); sh_mobile_lcdc_start(ch->lcdc); } return NOTIFY_OK; } /* ----------------------------------------------------------------------------- * Probe/remove and driver init/exit */ static const struct fb_videomode default_720p = { .name = "HDMI 720p", .xres = 1280, .yres = 720, .left_margin = 220, .right_margin = 110, .hsync_len = 40, .upper_margin = 20, .lower_margin = 5, .vsync_len = 5, .pixclock = 13468, .refresh = 60, .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT, }; static int sh_mobile_lcdc_remove(struct platform_device *pdev) { struct sh_mobile_lcdc_priv *priv = platform_get_drvdata(pdev); unsigned int i; fb_unregister_client(&priv->notifier); for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) sh_mobile_lcdc_overlay_fb_unregister(&priv->overlays[i]); for (i = 0; i < ARRAY_SIZE(priv->ch); i++) sh_mobile_lcdc_channel_fb_unregister(&priv->ch[i]); sh_mobile_lcdc_stop(priv); for (i = 0; i < ARRAY_SIZE(priv->overlays); i++) { struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i]; sh_mobile_lcdc_overlay_fb_cleanup(ovl); if (ovl->fb_mem) dma_free_coherent(&pdev->dev, ovl->fb_size, ovl->fb_mem, ovl->dma_handle); } for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; if (ch->tx_dev) { ch->tx_dev->lcdc = NULL; module_put(ch->cfg->tx_dev->dev.driver->owner); } sh_mobile_lcdc_channel_fb_cleanup(ch); if (ch->fb_mem) dma_free_coherent(&pdev->dev, ch->fb_size, ch->fb_mem, ch->dma_handle); } for (i = 0; i < ARRAY_SIZE(priv->ch); i++) { struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; if (ch->bl) sh_mobile_lcdc_bl_remove(ch->bl); mutex_destroy(&ch->open_lock); } if (priv->dot_clk) { pm_runtime_disable(&pdev->dev); clk_put(priv->dot_clk); } if (priv->base) iounmap(priv->base); if (priv->irq) free_irq(priv->irq, priv); kfree(priv); return 0; } static int sh_mobile_lcdc_check_interface(struct sh_mobile_lcdc_chan *ch) { int interface_type = ch->cfg->interface_type; switch (interface_type) { case RGB8: case RGB9: case RGB12A: case RGB12B: case RGB16: case RGB18: case RGB24: case SYS8A: case SYS8B: case SYS8C: case SYS8D: case SYS9: case SYS12: case SYS16A: case SYS16B: case SYS16C: case SYS18: case SYS24: break; default: return -EINVAL; } /* SUBLCD only supports SYS interface */ if (lcdc_chan_is_sublcd(ch)) { if (!(interface_type & LDMT1R_IFM)) return -EINVAL; interface_type &= ~LDMT1R_IFM; } ch->ldmt1r_value = interface_type; return 0; } static int sh_mobile_lcdc_overlay_init(struct sh_mobile_lcdc_overlay *ovl) { const struct sh_mobile_lcdc_format_info *format; struct device *dev = ovl->channel->lcdc->dev; int ret; if (ovl->cfg->fourcc == 0) return 0; /* Validate the format. */ format = sh_mobile_format_info(ovl->cfg->fourcc); if (format == NULL) { dev_err(dev, "Invalid FOURCC %08x\n", ovl->cfg->fourcc); return -EINVAL; } ovl->enabled = false; ovl->mode = LCDC_OVERLAY_BLEND; ovl->alpha = 255; ovl->rop3 = 0; ovl->pos_x = 0; ovl->pos_y = 0; /* The default Y virtual resolution is twice the panel size to allow for * double-buffering. */ ovl->format = format; ovl->xres = ovl->cfg->max_xres; ovl->xres_virtual = ovl->xres; ovl->yres = ovl->cfg->max_yres; ovl->yres_virtual = ovl->yres * 2; if (!format->yuv) ovl->pitch = ovl->xres_virtual * format->bpp / 8; else ovl->pitch = ovl->xres_virtual; /* Allocate frame buffer memory. */ ovl->fb_size = ovl->cfg->max_xres * ovl->cfg->max_yres * format->bpp / 8 * 2; ovl->fb_mem = dma_alloc_coherent(dev, ovl->fb_size, &ovl->dma_handle, GFP_KERNEL); if (!ovl->fb_mem) { dev_err(dev, "unable to allocate buffer\n"); return -ENOMEM; } ret = sh_mobile_lcdc_overlay_fb_init(ovl); if (ret < 0) return ret; return 0; } static int sh_mobile_lcdc_channel_init(struct sh_mobile_lcdc_chan *ch) { const struct sh_mobile_lcdc_format_info *format; const struct sh_mobile_lcdc_chan_cfg *cfg = ch->cfg; struct device *dev = ch->lcdc->dev; const struct fb_videomode *max_mode; const struct fb_videomode *mode; unsigned int num_modes; unsigned int max_size; unsigned int i; ch->notify = sh_mobile_lcdc_display_notify; /* Validate the format. */ format = sh_mobile_format_info(cfg->fourcc); if (format == NULL) { dev_err(dev, "Invalid FOURCC %08x.\n", cfg->fourcc); return -EINVAL; } /* Iterate through the modes to validate them and find the highest * resolution. */ max_mode = NULL; max_size = 0; for (i = 0, mode = cfg->lcd_modes; i < cfg->num_modes; i++, mode++) { unsigned int size = mode->yres * mode->xres; /* NV12/NV21 buffers must have even number of lines */ if ((cfg->fourcc == V4L2_PIX_FMT_NV12 || cfg->fourcc == V4L2_PIX_FMT_NV21) && (mode->yres & 0x1)) { dev_err(dev, "yres must be multiple of 2 for " "YCbCr420 mode.\n"); return -EINVAL; } if (size > max_size) { max_mode = mode; max_size = size; } } if (!max_size) max_size = MAX_XRES * MAX_YRES; else dev_dbg(dev, "Found largest videomode %ux%u\n", max_mode->xres, max_mode->yres); if (cfg->lcd_modes == NULL) { mode = &default_720p; num_modes = 1; } else { mode = cfg->lcd_modes; num_modes = cfg->num_modes; } /* Use the first mode as default. The default Y virtual resolution is * twice the panel size to allow for double-buffering. */ ch->format = format; ch->xres = mode->xres; ch->xres_virtual = mode->xres; ch->yres = mode->yres; ch->yres_virtual = mode->yres * 2; if (!format->yuv) { ch->colorspace = V4L2_COLORSPACE_SRGB; ch->pitch = ch->xres_virtual * format->bpp / 8; } else { ch->colorspace = V4L2_COLORSPACE_REC709; ch->pitch = ch->xres_virtual; } ch->display.width = cfg->panel_cfg.width; ch->display.height = cfg->panel_cfg.height; ch->display.mode = *mode; /* Allocate frame buffer memory. */ ch->fb_size = max_size * format->bpp / 8 * 2; ch->fb_mem = dma_alloc_coherent(dev, ch->fb_size, &ch->dma_handle, GFP_KERNEL); if (ch->fb_mem == NULL) { dev_err(dev, "unable to allocate buffer\n"); return -ENOMEM; } /* Initialize the transmitter device if present. */ if (cfg->tx_dev) { if (!cfg->tx_dev->dev.driver || !try_module_get(cfg->tx_dev->dev.driver->owner)) { dev_warn(dev, "unable to get transmitter device\n"); return -EINVAL; } ch->tx_dev = platform_get_drvdata(cfg->tx_dev); ch->tx_dev->lcdc = ch; ch->tx_dev->def_mode = *mode; } return sh_mobile_lcdc_channel_fb_init(ch, mode, num_modes); } static int sh_mobile_lcdc_probe(struct platform_device *pdev) { struct sh_mobile_lcdc_info *pdata = pdev->dev.platform_data; struct sh_mobile_lcdc_priv *priv; struct resource *res; int num_channels; int error; int irq, i; if (!pdata) { dev_err(&pdev->dev, "no platform data defined\n"); return -EINVAL; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); if (!res || irq < 0) { dev_err(&pdev->dev, "cannot get platform resources\n"); return -ENOENT; } priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->dev = &pdev->dev; for (i = 0; i < ARRAY_SIZE(priv->ch); i++) mutex_init(&priv->ch[i].open_lock); platform_set_drvdata(pdev, priv); error = request_irq(irq, sh_mobile_lcdc_irq, 0, dev_name(&pdev->dev), priv); if (error) { dev_err(&pdev->dev, "unable to request irq\n"); goto err1; } priv->irq = irq; atomic_set(&priv->hw_usecnt, -1); for (i = 0, num_channels = 0; i < ARRAY_SIZE(pdata->ch); i++) { struct sh_mobile_lcdc_chan *ch = priv->ch + num_channels; ch->lcdc = priv; ch->cfg = &pdata->ch[i]; error = sh_mobile_lcdc_check_interface(ch); if (error) { dev_err(&pdev->dev, "unsupported interface type\n"); goto err1; } init_waitqueue_head(&ch->frame_end_wait); init_completion(&ch->vsync_completion); /* probe the backlight is there is one defined */ if (ch->cfg->bl_info.max_brightness) ch->bl = sh_mobile_lcdc_bl_probe(&pdev->dev, ch); switch (pdata->ch[i].chan) { case LCDC_CHAN_MAINLCD: ch->enabled = LDCNT2R_ME; ch->reg_offs = lcdc_offs_mainlcd; num_channels++; break; case LCDC_CHAN_SUBLCD: ch->enabled = LDCNT2R_SE; ch->reg_offs = lcdc_offs_sublcd; num_channels++; break; } } if (!num_channels) { dev_err(&pdev->dev, "no channels defined\n"); error = -EINVAL; goto err1; } /* for dual channel LCDC (MAIN + SUB) force shared format setting */ if (num_channels == 2) priv->forced_fourcc = pdata->ch[0].fourcc; priv->base = ioremap_nocache(res->start, resource_size(res)); if (!priv->base) { error = -ENOMEM; goto err1; } error = sh_mobile_lcdc_setup_clocks(priv, pdata->clock_source); if (error) { dev_err(&pdev->dev, "unable to setup clocks\n"); goto err1; } /* Enable runtime PM. */ pm_runtime_enable(&pdev->dev); for (i = 0; i < num_channels; i++) { struct sh_mobile_lcdc_chan *ch = &priv->ch[i]; error = sh_mobile_lcdc_channel_init(ch); if (error) goto err1; } for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) { struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i]; ovl->cfg = &pdata->overlays[i]; ovl->channel = &priv->ch[0]; error = sh_mobile_lcdc_overlay_init(ovl); if (error) goto err1; } error = sh_mobile_lcdc_start(priv); if (error) { dev_err(&pdev->dev, "unable to start hardware\n"); goto err1; } for (i = 0; i < num_channels; i++) { struct sh_mobile_lcdc_chan *ch = priv->ch + i; error = sh_mobile_lcdc_channel_fb_register(ch); if (error) goto err1; } for (i = 0; i < ARRAY_SIZE(pdata->overlays); i++) { struct sh_mobile_lcdc_overlay *ovl = &priv->overlays[i]; error = sh_mobile_lcdc_overlay_fb_register(ovl); if (error) goto err1; } /* Failure ignored */ priv->notifier.notifier_call = sh_mobile_lcdc_notify; fb_register_client(&priv->notifier); return 0; err1: sh_mobile_lcdc_remove(pdev); return error; } static struct platform_driver sh_mobile_lcdc_driver = { .driver = { .name = "sh_mobile_lcdc_fb", .pm = &sh_mobile_lcdc_dev_pm_ops, }, .probe = sh_mobile_lcdc_probe, .remove = sh_mobile_lcdc_remove, }; module_platform_driver(sh_mobile_lcdc_driver); MODULE_DESCRIPTION("SuperH Mobile LCDC Framebuffer driver"); MODULE_AUTHOR("Magnus Damm <damm@opensource.se>"); MODULE_LICENSE("GPL v2");
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