mirror of https://gitee.com/openkylin/linux.git
fbdev: sh-mobile: HDMI support for SH-Mobile SoCs
Some SH-Mobile SoCs have an HDMI controller and a PHY, attached to one of their LCDC interfaces. This patch adds a preliminary static support for such controllers, this means, that only the 720p mode is handled ATM. Support for more modes and a dynamic switching between them will be added by a follow up patch. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski
Paul Mundt
parent
c243939817
commit
6011bdeaa6
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@ -1914,6 +1914,13 @@ config FB_SH_MOBILE_LCDC
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---help---
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Frame buffer driver for the on-chip SH-Mobile LCD controller.
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config FB_SH_MOBILE_HDMI
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tristate "SuperH Mobile HDMI controller support"
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depends on FB_SH_MOBILE_LCDC
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select FB_MODE_HELPERS
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---help---
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Driver for the on-chip SH-Mobile HDMI controller.
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config FB_TMIO
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tristate "Toshiba Mobile IO FrameBuffer support"
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depends on FB && MFD_CORE
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@ -124,6 +124,7 @@ obj-$(CONFIG_FB_PS3) += ps3fb.o
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obj-$(CONFIG_FB_SM501) += sm501fb.o
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obj-$(CONFIG_FB_XILINX) += xilinxfb.o
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obj-$(CONFIG_SH_MIPI_DSI) += sh_mipi_dsi.o
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obj-$(CONFIG_FB_SH_MOBILE_HDMI) += sh_mobile_hdmi.o
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obj-$(CONFIG_FB_SH_MOBILE_LCDC) += sh_mobile_lcdcfb.o
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obj-$(CONFIG_FB_OMAP) += omap/
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obj-y += omap2/
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File diff suppressed because it is too large
Load Diff
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@ -56,6 +56,7 @@ static int lcdc_shared_regs[] = {
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/* per-channel registers */
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enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R,
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LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR,
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LDHAJR,
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NR_CH_REGS };
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static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
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@ -74,6 +75,7 @@ static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
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[LDVLNR] = 0x450,
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[LDVSYNR] = 0x454,
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[LDPMR] = 0x460,
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[LDHAJR] = 0x4a0,
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};
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static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = {
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@ -137,6 +139,7 @@ struct sh_mobile_lcdc_priv {
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struct clk *dot_clk;
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unsigned long lddckr;
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struct sh_mobile_lcdc_chan ch[2];
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struct notifier_block notifier;
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unsigned long saved_shared_regs[NR_SHARED_REGS];
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int started;
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};
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@ -404,6 +407,56 @@ static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
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lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */
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}
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static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
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{
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struct fb_var_screeninfo *var = &ch->info->var;
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unsigned long h_total, hsync_pos;
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u32 tmp;
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tmp = ch->ldmt1r_value;
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tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28;
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tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0;
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lcdc_write_chan(ch, LDMT1R, tmp);
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/* setup SYS bus */
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lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r);
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lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r);
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/* horizontal configuration */
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h_total = var->xres + var->hsync_len +
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var->left_margin + var->right_margin;
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tmp = h_total / 8; /* HTCN */
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tmp |= (var->xres / 8) << 16; /* HDCN */
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lcdc_write_chan(ch, LDHCNR, tmp);
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hsync_pos = var->xres + var->right_margin;
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tmp = hsync_pos / 8; /* HSYNP */
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tmp |= (var->hsync_len / 8) << 16; /* HSYNW */
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lcdc_write_chan(ch, LDHSYNR, tmp);
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/* vertical configuration */
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tmp = var->yres + var->vsync_len +
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var->upper_margin + var->lower_margin; /* VTLN */
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tmp |= var->yres << 16; /* VDLN */
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lcdc_write_chan(ch, LDVLNR, tmp);
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tmp = var->yres + var->lower_margin; /* VSYNP */
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tmp |= var->vsync_len << 16; /* VSYNW */
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lcdc_write_chan(ch, LDVSYNR, tmp);
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/* Adjust horizontal synchronisation for HDMI */
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tmp = ((var->xres & 7) << 24) |
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((h_total & 7) << 16) |
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((var->hsync_len & 7) << 8) |
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hsync_pos;
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lcdc_write_chan(ch, LDHAJR, tmp);
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}
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static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
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{
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struct sh_mobile_lcdc_chan *ch;
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@ -470,49 +523,11 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
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if (!ch->enabled)
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continue;
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tmp = ch->ldmt1r_value;
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tmp |= (lcd_cfg->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28;
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tmp |= (lcd_cfg->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0;
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tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 0;
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lcdc_write_chan(ch, LDMT1R, tmp);
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/* setup SYS bus */
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lcdc_write_chan(ch, LDMT2R, ch->cfg.sys_bus_cfg.ldmt2r);
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lcdc_write_chan(ch, LDMT3R, ch->cfg.sys_bus_cfg.ldmt3r);
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/* horizontal configuration */
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tmp = lcd_cfg->xres + lcd_cfg->hsync_len;
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tmp += lcd_cfg->left_margin;
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tmp += lcd_cfg->right_margin;
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tmp /= 8; /* HTCN */
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tmp |= (lcd_cfg->xres / 8) << 16; /* HDCN */
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lcdc_write_chan(ch, LDHCNR, tmp);
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tmp = lcd_cfg->xres;
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tmp += lcd_cfg->right_margin;
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tmp /= 8; /* HSYNP */
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tmp |= (lcd_cfg->hsync_len / 8) << 16; /* HSYNW */
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lcdc_write_chan(ch, LDHSYNR, tmp);
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sh_mobile_lcdc_geometry(ch);
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/* power supply */
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lcdc_write_chan(ch, LDPMR, 0);
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/* vertical configuration */
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tmp = lcd_cfg->yres + lcd_cfg->vsync_len;
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tmp += lcd_cfg->upper_margin;
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tmp += lcd_cfg->lower_margin; /* VTLN */
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tmp |= lcd_cfg->yres << 16; /* VDLN */
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lcdc_write_chan(ch, LDVLNR, tmp);
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tmp = lcd_cfg->yres;
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tmp += lcd_cfg->lower_margin; /* VSYNP */
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tmp |= lcd_cfg->vsync_len << 16; /* VSYNW */
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lcdc_write_chan(ch, LDVSYNR, tmp);
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board_cfg = &ch->cfg.board_cfg;
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if (board_cfg->setup_sys)
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ret = board_cfg->setup_sys(board_cfg->board_data, ch,
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@ -943,6 +958,62 @@ static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = {
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.runtime_resume = sh_mobile_lcdc_runtime_resume,
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};
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static int sh_mobile_lcdc_notify(struct notifier_block *nb,
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unsigned long action, void *data)
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{
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struct fb_event *event = data;
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struct fb_info *info = event->info;
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struct sh_mobile_lcdc_chan *ch = info->par;
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struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg;
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struct fb_var_screeninfo *var;
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if (&ch->lcdc->notifier != nb)
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return 0;
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dev_dbg(info->dev, "%s(): action = %lu, data = %p\n",
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__func__, action, event->data);
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switch(action) {
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case FB_EVENT_SUSPEND:
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if (board_cfg->display_off)
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board_cfg->display_off(board_cfg->board_data);
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pm_runtime_put(info->device);
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break;
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case FB_EVENT_RESUME:
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var = &info->var;
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/* HDMI must be enabled before LCDC configuration */
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if (board_cfg->display_on)
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board_cfg->display_on(board_cfg->board_data, ch->info);
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/* Check if the new display is not in our modelist */
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if (ch->info->modelist.next &&
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!fb_match_mode(var, &ch->info->modelist)) {
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struct fb_videomode mode;
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int ret;
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/* Can we handle this display? */
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if (var->xres > ch->cfg.lcd_cfg.xres ||
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var->yres > ch->cfg.lcd_cfg.yres)
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return -ENOMEM;
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/* Add to the modelist */
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fb_var_to_videomode(&mode, var);
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ret = fb_add_videomode(&mode, &ch->info->modelist);
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if (ret < 0)
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return ret;
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}
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pm_runtime_get_sync(info->device);
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sh_mobile_lcdc_geometry(ch);
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break;
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}
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return 0;
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}
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static int sh_mobile_lcdc_remove(struct platform_device *pdev);
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static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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@ -1031,6 +1102,8 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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}
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for (i = 0; i < j; i++) {
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struct fb_var_screeninfo *var;
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struct fb_videomode *lcd_cfg;
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cfg = &priv->ch[i].cfg;
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priv->ch[i].info = framebuffer_alloc(0, &pdev->dev);
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@ -1041,22 +1114,33 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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}
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info = priv->ch[i].info;
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var = &info->var;
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lcd_cfg = &cfg->lcd_cfg;
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info->fbops = &sh_mobile_lcdc_ops;
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info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres;
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info->var.yres = cfg->lcd_cfg.yres;
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var->xres = var->xres_virtual = lcd_cfg->xres;
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var->yres = lcd_cfg->yres;
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/* Default Y virtual resolution is 2x panel size */
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info->var.yres_virtual = info->var.yres * 2;
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info->var.width = cfg->lcd_size_cfg.width;
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info->var.height = cfg->lcd_size_cfg.height;
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info->var.activate = FB_ACTIVATE_NOW;
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error = sh_mobile_lcdc_set_bpp(&info->var, cfg->bpp);
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var->yres_virtual = var->yres * 2;
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var->width = cfg->lcd_size_cfg.width;
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var->height = cfg->lcd_size_cfg.height;
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var->activate = FB_ACTIVATE_NOW;
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var->left_margin = lcd_cfg->left_margin;
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var->right_margin = lcd_cfg->right_margin;
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var->upper_margin = lcd_cfg->upper_margin;
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var->lower_margin = lcd_cfg->lower_margin;
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var->hsync_len = lcd_cfg->hsync_len;
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var->vsync_len = lcd_cfg->vsync_len;
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var->sync = lcd_cfg->sync;
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var->pixclock = lcd_cfg->pixclock;
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error = sh_mobile_lcdc_set_bpp(var, cfg->bpp);
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if (error)
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break;
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info->fix = sh_mobile_lcdc_fix;
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info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8);
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info->fix.line_length = lcd_cfg->xres * (cfg->bpp / 8);
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info->fix.smem_len = info->fix.line_length *
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info->var.yres_virtual;
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var->yres_virtual;
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buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
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&priv->ch[i].dma_handle, GFP_KERNEL);
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@ -1121,10 +1205,14 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
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ch->cfg.bpp);
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/* deferred io mode: disable clock to save power */
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if (info->fbdefio)
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if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
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sh_mobile_lcdc_clk_off(priv);
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}
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/* Failure ignored */
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priv->notifier.notifier_call = sh_mobile_lcdc_notify;
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fb_register_client(&priv->notifier);
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return 0;
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err1:
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sh_mobile_lcdc_remove(pdev);
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@ -1138,6 +1226,8 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev)
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struct fb_info *info;
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int i;
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fb_unregister_client(&priv->notifier);
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for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
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if (priv->ch[i].info && priv->ch[i].info->dev)
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unregister_framebuffer(priv->ch[i].info);
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@ -0,0 +1,22 @@
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/*
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* SH-Mobile High-Definition Multimedia Interface (HDMI)
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*
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* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef SH_MOBILE_HDMI_H
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#define SH_MOBILE_HDMI_H
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struct sh_mobile_lcdc_chan_cfg;
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struct device;
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struct sh_mobile_hdmi_info {
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struct sh_mobile_lcdc_chan_cfg *lcd_chan;
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struct device *lcd_dev;
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};
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#endif
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