This is a preparation for a patch, that shall allow displaying of a smaller
framebuffer on a bigger display and of a part of a bigger framebuffer on a
smaller display.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
drivers/video/sh_mobile_hdmi.c | 8 ++++++--
drivers/video/sh_mobile_lcdcfb.c | 37 ++++++++++++++++++++-----------------
drivers/video/sh_mobile_lcdcfb.h | 1 +
3 files changed, 27 insertions(+), 19 deletions(-)
diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index a645d71..9034815 100644
--- a/drivers/video/sh_mobile_hdmi.c
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -838,6 +838,7 @@ static void hdmi_display_on(void *arg, struct fb_info *info)
*/
struct sh_hdmi *hdmi = arg;
struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
+ struct sh_mobile_lcdc_chan *ch = info->par;
pr_debug("%s(%p): state %x\n", __func__, pdata->lcd_dev, info->state);
@@ -853,7 +854,7 @@ static void hdmi_display_on(void *arg, struct fb_info *info)
case HDMI_HOTPLUG_DISCONNECTED:
info->state = FBINFO_STATE_SUSPENDED;
default:
- hdmi->var = info->var;
+ hdmi->var = ch->display_var;
}
}
@@ -873,6 +874,7 @@ static void edid_work_fn(struct work_struct *work)
{
struct sh_hdmi *hdmi = container_of(work, struct sh_hdmi, edid_work.work);
struct sh_mobile_hdmi_info *pdata = hdmi->dev->platform_data;
+ struct sh_mobile_lcdc_chan *ch;
pr_debug("%s(%p): begin, hotplug status %d\n", __func__,
pdata->lcd_dev, hdmi->hp_state);
@@ -894,10 +896,12 @@ static void edid_work_fn(struct work_struct *work)
if (!hdmi->info)
goto out;
+ ch = hdmi->info->par;
+
acquire_console_sem();
/* HDMI plug in */
- hdmi->info->var = hdmi->var;
+ ch->display_var = hdmi->var;
if (hdmi->info->state != FBINFO_STATE_RUNNING) {
fb_set_suspend(hdmi->info, 0);
} else {
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index 29d7ce7..946a810 100644
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -384,8 +384,8 @@ static void sh_mobile_lcdc_start_stop(struct sh_mobile_lcdc_priv *priv,
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;
+ struct fb_var_screeninfo *var = &ch->info->var, *display_var = &ch->display_var;
+ unsigned long h_total, hsync_pos, display_h_total;
u32 tmp;
tmp = ch->ldmt1r_value;
@@ -403,31 +403,33 @@ static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch)
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;
+ h_total = display_var->xres + display_var->hsync_len +
+ display_var->left_margin + display_var->right_margin;
tmp = h_total / 8; /* HTCN */
- tmp |= (var->xres / 8) << 16; /* HDCN */
+ tmp |= (min(display_var->xres, var->xres) / 8) << 16; /* HDCN */
lcdc_write_chan(ch, LDHCNR, tmp);
- hsync_pos = var->xres + var->right_margin;
+ hsync_pos = display_var->xres + display_var->right_margin;
tmp = hsync_pos / 8; /* HSYNP */
- tmp |= (var->hsync_len / 8) << 16; /* HSYNW */
+ tmp |= (display_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 */
+ tmp = display_var->yres + display_var->vsync_len +
+ display_var->upper_margin + display_var->lower_margin; /* VTLN */
+ tmp |= min(display_var->yres, var->yres) << 16; /* VDLN */
lcdc_write_chan(ch, LDVLNR, tmp);
- tmp = var->yres + var->lower_margin; /* VSYNP */
- tmp |= var->vsync_len << 16; /* VSYNW */
+ tmp = display_var->yres + display_var->lower_margin; /* VSYNP */
+ tmp |= display_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) |
+ display_h_total = display_var->xres + display_var->hsync_len +
+ display_var->left_margin + display_var->right_margin;
+ tmp = ((display_var->xres & 7) << 24) |
+ ((display_h_total & 7) << 16) |
+ ((display_var->hsync_len & 7) << 8) |
hsync_pos;
lcdc_write_chan(ch, LDHAJR, tmp);
}
@@ -477,7 +479,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
m = 1 << 6;
tmp |= m << (lcdc_chan_is_sublcd(ch) ? 8 : 0);
- lcdc_write_chan(ch, LDDCKPAT1R, 0x00000000);
+ lcdc_write_chan(ch, LDDCKPAT1R, 0);
lcdc_write_chan(ch, LDDCKPAT2R, (1 << (m/2)) - 1);
}
@@ -520,7 +522,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
/* set bpp format in PKF[4:0] */
tmp = lcdc_read_chan(ch, LDDFR);
- tmp &= ~(0x0001001f);
+ tmp &= ~0x0001001f;
tmp |= (ch->info->var.bits_per_pixel == 16) ? 3 : 0;
lcdc_write_chan(ch, LDDFR, tmp);
@@ -1153,6 +1155,7 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
info->screen_base = buf;
info->device = &pdev->dev;
info->par = ch;
+ ch->display_var = *var;
}
if (error)
diff --git a/drivers/video/sh_mobile_lcdcfb.h b/drivers/video/sh_mobile_lcdcfb.h
index 6fcfc0f..dfd3d76 100644
--- a/drivers/video/sh_mobile_lcdcfb.h
+++ b/drivers/video/sh_mobile_lcdcfb.h
@@ -32,6 +32,7 @@ struct sh_mobile_lcdc_chan {
unsigned long pan_offset;
wait_queue_head_t frame_end_wait;
struct completion vsync_completion;
+ struct fb_var_screeninfo display_var;
};
#endif
--
1.7.1
--
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