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sunxi: video: Add VGA output support

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Add support for VGA directly from the sunxi SoC / display engine.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede
2014-12-25 13:58:06 +01:00
parent 49d2703dd8
commit d9786d2380
9 changed files with 143 additions and 9 deletions
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60
drivers/video/sunxi_display.c
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@@ -569,8 +569,7 @@ static void sunxi_lcdc_tcon0_mode_set(const struct ctfb_res_modes *mode)
writel(0, &lcdc->tcon0_io_tristate);
}
#ifdef CONFIG_VIDEO_HDMI
#if defined CONFIG_VIDEO_HDMI || defined CONFIG_VIDEO_VGA
static void sunxi_lcdc_tcon1_mode_set(const struct ctfb_res_modes *mode,
int *clk_div, int *clk_double,
bool use_portd_hvsync)
@@ -624,6 +623,9 @@ static void sunxi_lcdc_tcon1_mode_set(const struct ctfb_res_modes *mode,
}
sunxi_lcdc_pll_set(1, mode->pixclock_khz, clk_div, clk_double);
}
#endif /* CONFIG_VIDEO_HDMI || defined CONFIG_VIDEO_VGA */
#ifdef CONFIG_VIDEO_HDMI
static void sunxi_hdmi_setup_info_frames(const struct ctfb_res_modes *mode)
{
@@ -735,6 +737,37 @@ static void sunxi_hdmi_enable(void)
#endif /* CONFIG_VIDEO_HDMI */
#ifdef CONFIG_VIDEO_VGA
static void sunxi_vga_mode_set(void)
{
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
struct sunxi_tve_reg * const tve =
(struct sunxi_tve_reg *)SUNXI_TVE0_BASE;
/* Clock on */
setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_TVE0);
/* Set TVE in VGA mode */
writel(SUNXI_TVE_GCTRL_DAC_INPUT(0, 1) |
SUNXI_TVE_GCTRL_DAC_INPUT(1, 2) |
SUNXI_TVE_GCTRL_DAC_INPUT(2, 3), &tve->gctrl);
writel(SUNXI_TVE_GCTRL_CFG0_VGA, &tve->cfg0);
writel(SUNXI_TVE_GCTRL_DAC_CFG0_VGA, &tve->dac_cfg0);
writel(SUNXI_TVE_GCTRL_UNKNOWN1_VGA, &tve->unknown1);
}
static void sunxi_vga_enable(void)
{
struct sunxi_tve_reg * const tve =
(struct sunxi_tve_reg *)SUNXI_TVE0_BASE;
setbits_le32(&tve->gctrl, SUNXI_TVE_GCTRL_ENABLE);
}
#endif /* CONFIG_VIDEO_VGA */
static void sunxi_drc_init(void)
{
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
@@ -757,13 +790,14 @@ static void sunxi_engines_init(void)
static void sunxi_mode_set(const struct ctfb_res_modes *mode,
unsigned int address)
{
int __maybe_unused clk_div, clk_double;
switch (sunxi_display.monitor) {
case sunxi_monitor_none:
break;
case sunxi_monitor_dvi:
case sunxi_monitor_hdmi: {
case sunxi_monitor_hdmi:
#ifdef CONFIG_VIDEO_HDMI
int clk_div, clk_double;
sunxi_composer_mode_set(mode, address);
sunxi_lcdc_tcon1_mode_set(mode, &clk_div, &clk_double, 0);
sunxi_hdmi_mode_set(mode, clk_div, clk_double);
@@ -771,7 +805,6 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode,
sunxi_lcdc_enable();
sunxi_hdmi_enable();
#endif
}
break;
case sunxi_monitor_lcd:
sunxi_lcdc_panel_enable();
@@ -782,7 +815,14 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode,
sunxi_lcdc_backlight_enable();
break;
case sunxi_monitor_vga:
#ifdef CONFIG_VIDEO_VGA_VIA_LCD
#ifdef CONFIG_VIDEO_VGA
sunxi_composer_mode_set(mode, address);
sunxi_lcdc_tcon1_mode_set(mode, &clk_div, &clk_double, 1);
sunxi_vga_mode_set();
sunxi_composer_enable();
sunxi_lcdc_enable();
sunxi_vga_enable();
#elif defined CONFIG_VIDEO_VGA_VIA_LCD
sunxi_composer_mode_set(mode, address);
sunxi_lcdc_tcon0_mode_set(mode);
sunxi_composer_enable();
@@ -862,7 +902,7 @@ void *video_hw_init(void)
if (lcd_mode[0]) {
sunxi_display.monitor = sunxi_monitor_lcd;
} else {
#ifdef CONFIG_VIDEO_VGA_VIA_LCD
#if defined CONFIG_VIDEO_VGA_VIA_LCD || defined CONFIG_VIDEO_VGA
sunxi_display.monitor = sunxi_monitor_vga;
#else
sunxi_display.monitor = sunxi_monitor_none;
@@ -894,7 +934,7 @@ void *video_hw_init(void)
sunxi_display.monitor = sunxi_monitor_none;
return NULL;
case sunxi_monitor_vga:
#ifdef CONFIG_VIDEO_VGA_VIA_LCD
#if defined CONFIG_VIDEO_VGA_VIA_LCD || defined CONFIG_VIDEO_VGA
sunxi_display.depth = 18;
break;
#else
@@ -950,7 +990,11 @@ int sunxi_simplefb_setup(void *blob)
pipeline = "de_be0-lcd0";
break;
case sunxi_monitor_vga:
#ifdef CONFIG_VIDEO_VGA
pipeline = "de_be0-lcd0-tve0";
#elif defined CONFIG_VIDEO_VGA_VIA_LCD
pipeline = "de_be0-lcd0";
#endif
break;
}