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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 2010-07-21 10:13:21 +00:00 committed by Paul Mundt
parent c243939817
commit 6011bdeaa6
5 changed files with 1197 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/video/Kconfig
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@ -1914,6 +1914,13 @@ config FB_SH_MOBILE_LCDC
---help---
Frame buffer driver for the on-chip SH-Mobile LCD controller.
config FB_SH_MOBILE_HDMI
tristate "SuperH Mobile HDMI controller support"
depends on FB_SH_MOBILE_LCDC
select FB_MODE_HELPERS
---help---
Driver for the on-chip SH-Mobile HDMI controller.
config FB_TMIO
tristate "Toshiba Mobile IO FrameBuffer support"
depends on FB && MFD_CORE

1
drivers/video/Makefile
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@ -124,6 +124,7 @@ obj-$(CONFIG_FB_PS3) += ps3fb.o
obj-$(CONFIG_FB_SM501) += sm501fb.o
obj-$(CONFIG_FB_XILINX) += xilinxfb.o
obj-$(CONFIG_SH_MIPI_DSI) += sh_mipi_dsi.o
obj-$(CONFIG_FB_SH_MOBILE_HDMI) += sh_mobile_hdmi.o
obj-$(CONFIG_FB_SH_MOBILE_LCDC) += sh_mobile_lcdcfb.o
obj-$(CONFIG_FB_OMAP) += omap/
obj-y += omap2/

1028
drivers/video/sh_mobile_hdmi.c Normal file
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File diff suppressed because it is too large Load Diff

188
drivers/video/sh_mobile_lcdcfb.c
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@ -56,6 +56,7 @@ static int lcdc_shared_regs[] = {
/* per-channel registers */
enum { LDDCKPAT1R, LDDCKPAT2R, LDMT1R, LDMT2R, LDMT3R, LDDFR, LDSM1R,
LDSM2R, LDSA1R, LDMLSR, LDHCNR, LDHSYNR, LDVLNR, LDVSYNR, LDPMR,
LDHAJR,
NR_CH_REGS };
static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
@ -74,6 +75,7 @@ static unsigned long lcdc_offs_mainlcd[NR_CH_REGS] = {
[LDVLNR] = 0x450,
[LDVSYNR] = 0x454,
[LDPMR] = 0x460,
[LDHAJR] = 0x4a0,
};
static unsigned long lcdc_offs_sublcd[NR_CH_REGS] = {
@ -137,6 +139,7 @@ struct sh_mobile_lcdc_priv {
struct clk *dot_clk;
unsigned long lddckr;
struct sh_mobile_lcdc_chan ch[2];
struct notifier_block notifier;
unsigned long saved_shared_regs[NR_SHARED_REGS];
int started;
};
@ -404,6 +407,56 @@ static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
lcdc_write(priv, _LDDCKSTPR, 1); /* stop dotclock */
}
static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
{
struct fb_var_screeninfo *var = &ch->info->var;
unsigned long h_total, hsync_pos;
u32 tmp;
tmp = ch->ldmt1r_value;
tmp |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28;
tmp |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 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 = var->xres + var->hsync_len +
var->left_margin + var->right_margin;
tmp = h_total / 8; /* HTCN */
tmp |= (var->xres / 8) << 16; /* HDCN */
lcdc_write_chan(ch, LDHCNR, tmp);
hsync_pos = var->xres + var->right_margin;
tmp = hsync_pos / 8; /* HSYNP */
tmp |= (var->hsync_len / 8) << 16; /* HSYNW */
lcdc_write_chan(ch, LDHSYNR, tmp);
/* vertical configuration */
tmp = var->yres + var->vsync_len +
var->upper_margin + var->lower_margin; /* VTLN */
tmp |= var->yres << 16; /* VDLN */
lcdc_write_chan(ch, LDVLNR, tmp);
tmp = var->yres + var->lower_margin; /* VSYNP */
tmp |= var->vsync_len << 16; /* VSYNW */
lcdc_write_chan(ch, LDVSYNR, tmp);
/* Adjust horizontal synchronisation for HDMI */
tmp = ((var->xres & 7) << 24) |
((h_total & 7) << 16) |
((var->hsync_len & 7) << 8) |
hsync_pos;
lcdc_write_chan(ch, LDHAJR, tmp);
}
static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
{
struct sh_mobile_lcdc_chan *ch;
@ -470,49 +523,11 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
if (!ch->enabled)
continue;
tmp = ch->ldmt1r_value;
tmp |= (lcd_cfg->sync & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1 << 28;
tmp |= (lcd_cfg->sync & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1 << 27;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DWPOL) ? 1 << 26 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DIPOL) ? 1 << 25 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DAPOL) ? 1 << 24 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_HSCNT) ? 1 << 17 : 0;
tmp |= (ch->cfg.flags & LCDC_FLAGS_DWCNT) ? 1 << 16 : 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 */
tmp = lcd_cfg->xres + lcd_cfg->hsync_len;
tmp += lcd_cfg->left_margin;
tmp += lcd_cfg->right_margin;
tmp /= 8; /* HTCN */
tmp |= (lcd_cfg->xres / 8) << 16; /* HDCN */
lcdc_write_chan(ch, LDHCNR, tmp);
tmp = lcd_cfg->xres;
tmp += lcd_cfg->right_margin;
tmp /= 8; /* HSYNP */
tmp |= (lcd_cfg->hsync_len / 8) << 16; /* HSYNW */
lcdc_write_chan(ch, LDHSYNR, tmp);
sh_mobile_lcdc_geometry(ch);
/* power supply */
lcdc_write_chan(ch, LDPMR, 0);
/* vertical configuration */
tmp = lcd_cfg->yres + lcd_cfg->vsync_len;
tmp += lcd_cfg->upper_margin;
tmp += lcd_cfg->lower_margin; /* VTLN */
tmp |= lcd_cfg->yres << 16; /* VDLN */
lcdc_write_chan(ch, LDVLNR, tmp);
tmp = lcd_cfg->yres;
tmp += lcd_cfg->lower_margin; /* VSYNP */
tmp |= lcd_cfg->vsync_len << 16; /* VSYNW */
lcdc_write_chan(ch, LDVSYNR, tmp);
board_cfg = &ch->cfg.board_cfg;
if (board_cfg->setup_sys)
ret = board_cfg->setup_sys(board_cfg->board_data, ch,
@ -943,6 +958,62 @@ static const struct dev_pm_ops sh_mobile_lcdc_dev_pm_ops = {
.runtime_resume = sh_mobile_lcdc_runtime_resume,
};
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;
struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg;
struct fb_var_screeninfo *var;
if (&ch->lcdc->notifier != nb)
return 0;
dev_dbg(info->dev, "%s(): action = %lu, data = %p\n",
__func__, action, event->data);
switch(action) {
case FB_EVENT_SUSPEND:
if (board_cfg->display_off)
board_cfg->display_off(board_cfg->board_data);
pm_runtime_put(info->device);
break;
case FB_EVENT_RESUME:
var = &info->var;
/* HDMI must be enabled before LCDC configuration */
if (board_cfg->display_on)
board_cfg->display_on(board_cfg->board_data, ch->info);
/* Check if the new display is not in our modelist */
if (ch->info->modelist.next &&
!fb_match_mode(var, &ch->info->modelist)) {
struct fb_videomode mode;
int ret;
/* Can we handle this display? */
if (var->xres > ch->cfg.lcd_cfg.xres ||
var->yres > ch->cfg.lcd_cfg.yres)
return -ENOMEM;
/* Add to the modelist */
fb_var_to_videomode(&mode, var);
ret = fb_add_videomode(&mode, &ch->info->modelist);
if (ret < 0)
return ret;
}
pm_runtime_get_sync(info->device);
sh_mobile_lcdc_geometry(ch);
break;
}
return 0;
}
static int sh_mobile_lcdc_remove(struct platform_device *pdev);
static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
@ -1031,6 +1102,8 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
}
for (i = 0; i < j; i++) {
struct fb_var_screeninfo *var;
struct fb_videomode *lcd_cfg;
cfg = &priv->ch[i].cfg;
priv->ch[i].info = framebuffer_alloc(0, &pdev->dev);
@ -1041,22 +1114,33 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
}
info = priv->ch[i].info;
var = &info->var;
lcd_cfg = &cfg->lcd_cfg;
info->fbops = &sh_mobile_lcdc_ops;
info->var.xres = info->var.xres_virtual = cfg->lcd_cfg.xres;
info->var.yres = cfg->lcd_cfg.yres;
var->xres = var->xres_virtual = lcd_cfg->xres;
var->yres = lcd_cfg->yres;
/* Default Y virtual resolution is 2x panel size */
info->var.yres_virtual = info->var.yres * 2;
info->var.width = cfg->lcd_size_cfg.width;
info->var.height = cfg->lcd_size_cfg.height;
info->var.activate = FB_ACTIVATE_NOW;
error = sh_mobile_lcdc_set_bpp(&info->var, cfg->bpp);
var->yres_virtual = var->yres * 2;
var->width = cfg->lcd_size_cfg.width;
var->height = cfg->lcd_size_cfg.height;
var->activate = FB_ACTIVATE_NOW;
var->left_margin = lcd_cfg->left_margin;
var->right_margin = lcd_cfg->right_margin;
var->upper_margin = lcd_cfg->upper_margin;
var->lower_margin = lcd_cfg->lower_margin;
var->hsync_len = lcd_cfg->hsync_len;
var->vsync_len = lcd_cfg->vsync_len;
var->sync = lcd_cfg->sync;
var->pixclock = lcd_cfg->pixclock;
error = sh_mobile_lcdc_set_bpp(var, cfg->bpp);
if (error)
break;
info->fix = sh_mobile_lcdc_fix;
info->fix.line_length = cfg->lcd_cfg.xres * (cfg->bpp / 8);
info->fix.line_length = lcd_cfg->xres * (cfg->bpp / 8);
info->fix.smem_len = info->fix.line_length *
info->var.yres_virtual;
var->yres_virtual;
buf = dma_alloc_coherent(&pdev->dev, info->fix.smem_len,
&priv->ch[i].dma_handle, GFP_KERNEL);
@ -1121,10 +1205,14 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
ch->cfg.bpp);
/* deferred io mode: disable clock to save power */
if (info->fbdefio)
if (info->fbdefio || info->state == FBINFO_STATE_SUSPENDED)
sh_mobile_lcdc_clk_off(priv);
}
/* Failure ignored */
priv->notifier.notifier_call = sh_mobile_lcdc_notify;
fb_register_client(&priv->notifier);
return 0;
err1:
sh_mobile_lcdc_remove(pdev);
@ -1138,6 +1226,8 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev)
struct fb_info *info;
int i;
fb_unregister_client(&priv->notifier);
for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
if (priv->ch[i].info && priv->ch[i].info->dev)
unregister_framebuffer(priv->ch[i].info);

22
include/video/sh_mobile_hdmi.h Normal file
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@ -0,0 +1,22 @@
/*
* SH-Mobile High-Definition Multimedia Interface (HDMI)
*
* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef SH_MOBILE_HDMI_H
#define SH_MOBILE_HDMI_H
struct sh_mobile_lcdc_chan_cfg;
struct device;
struct sh_mobile_hdmi_info {
struct sh_mobile_lcdc_chan_cfg *lcd_chan;
struct device *lcd_dev;
};
#endif