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sunxi: video: Enable video on sun8i, which supports LCD but not HDMI

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The A23 (sun8i) only has lcd output support, so allow building the video code
without HDMI support for use with the A23.

Also the A23 has the same reset bits (and necessity to enable the DRC block)
as the sun6i, so enable those bits for sun8i too.

Note building without HDMI support is useful for the A13 (sun5i variant) too,
as that one does not have HDMI either.

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 2014-12-23 23:04:35 +01:00
parent 2dae800f1e
commit 2fbf091a54
2 changed files with 33 additions and 4 deletions
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7
board/sunxi/Kconfig
View file

@ -287,6 +287,13 @@ config VIDEO
or VGA output found on most sunxi devices. See doc/README.video for
info on how to select the video output and mode.
config VIDEO_HDMI
boolean "HDMI output support"
depends on VIDEO && !MACH_SUN8I
default y
---help---
Say Y here to add support for outputting video over HDMI.
config VIDEO_LCD_MODE
string "LCD panel timing details"
depends on VIDEO

30
drivers/video/sunxi_display.c
View file

@ -39,6 +39,8 @@ struct sunxi_display {
unsigned int depth;
} sunxi_display;
#ifdef CONFIG_VIDEO_HDMI
/*
* Wait up to 200ms for value to be set in given part of reg.
*/
@ -267,6 +269,8 @@ static int sunxi_hdmi_edid_get_mode(struct ctfb_res_modes *mode)
return 0;
}
#endif /* CONFIG_VIDEO_HDMI */
/*
* This is the entity that mixes and matches the different layers and inputs.
* Allwinner calls it the back-end, but i like composer better.
@ -279,7 +283,7 @@ static void sunxi_composer_init(void)
(struct sunxi_de_be_reg *)SUNXI_DE_BE0_BASE;
int i;
#ifdef CONFIG_MACH_SUN6I
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
/* Reset off */
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE_BE0);
#endif
@ -409,7 +413,7 @@ static void sunxi_lcdc_init(void)
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
/* Reset off */
#ifdef CONFIG_MACH_SUN6I
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_LCD0);
#else
setbits_le32(&ccm->lcd0_ch0_clk_cfg, CCM_LCD_CH0_CTRL_RST);
@ -566,6 +570,8 @@ static void sunxi_lcdc_tcon0_mode_set(const struct ctfb_res_modes *mode)
writel(0, &lcdc->tcon0_io_tristate);
}
#ifdef CONFIG_VIDEO_HDMI
static void sunxi_lcdc_tcon1_mode_set(const struct ctfb_res_modes *mode,
int *clk_div, int *clk_double)
{
@ -712,9 +718,11 @@ static void sunxi_hdmi_enable(void)
setbits_le32(&hdmi->video_ctrl, SUNXI_HDMI_VIDEO_CTRL_ENABLE);
}
#endif /* CONFIG_VIDEO_HDMI */
static void sunxi_drc_init(void)
{
#ifdef CONFIG_MACH_SUN6I
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
@ -739,6 +747,7 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode,
break;
case sunxi_monitor_dvi:
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);
@ -746,6 +755,7 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode,
sunxi_composer_enable();
sunxi_lcdc_enable();
sunxi_hdmi_enable();
#endif
}
break;
case sunxi_monitor_lcd:
@ -779,9 +789,12 @@ void *video_hw_init(void)
const struct ctfb_res_modes *mode;
struct ctfb_res_modes custom;
const char *options;
int i, ret, hpd, edid;
#ifdef CONFIG_VIDEO_HDMI
int ret, hpd, edid;
#endif
char mon[16];
char *lcd_mode = CONFIG_VIDEO_LCD_MODE;
int i;
memset(&sunxi_display, 0, sizeof(struct sunxi_display));
@ -791,9 +804,13 @@ void *video_hw_init(void)
video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode,
&sunxi_display.depth, &options);
#ifdef CONFIG_VIDEO_HDMI
hpd = video_get_option_int(options, "hpd", 1);
edid = video_get_option_int(options, "edid", 1);
sunxi_display.monitor = sunxi_monitor_dvi;
#else
sunxi_display.monitor = sunxi_monitor_lcd;
#endif
video_get_option_string(options, "monitor", mon, sizeof(mon),
sunxi_get_mon_desc(sunxi_display.monitor));
for (i = 0; i <= SUNXI_MONITOR_LAST; i++) {
@ -811,6 +828,10 @@ void *video_hw_init(void)
return NULL;
case sunxi_monitor_dvi:
case sunxi_monitor_hdmi:
#ifndef CONFIG_VIDEO_HDMI
printf("HDMI/DVI not supported on this board\n");
return NULL;
#else
/* Always call hdp_detect, as it also enables clocks, etc. */
ret = sunxi_hdmi_hpd_detect();
if (ret) {
@ -829,6 +850,7 @@ void *video_hw_init(void)
/* Fall back / through to LCD */
sunxi_display.monitor = sunxi_monitor_lcd;
#endif
case sunxi_monitor_lcd:
if (lcd_mode[0]) {
sunxi_display.depth = video_get_params(&custom, lcd_mode);