diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2014-12-19 14:13:57 (GMT) |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-01-14 13:56:38 (GMT) |
| commit | 518cef20f88d1c020a57febf69ed220bdda746df (patch) | |
| tree | 16cb6c96cd59ae9c15f089b50c29a9cf6c655cb5 | |
| parent | 5f33993b7e9a3a3bfc6887780d4101e684b11359 (diff) | |
| download | u-boot-518cef20f88d1c020a57febf69ed220bdda746df.tar.xz | |
sunxi: video: Add hpd option
Allow the user to specify hpd=0 as option in the video-mode env. variable,
if hpd is set to 0 then the hdmi output will be brought up even if no cable
is connected.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Anatolij Gustschin <agust@denx.de>
| -rw-r--r-- | drivers/video/sunxi_display.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c index cf81e45..18fa83d 100644 --- a/drivers/video/sunxi_display.c +++ b/drivers/video/sunxi_display.c @@ -53,10 +53,16 @@ static int sunxi_hdmi_hpd_detect(void) udelay(1000); - if (readl(&hdmi->hpd) & SUNXI_HDMI_HPD_DETECT) - return 1; + return (readl(&hdmi->hpd) & SUNXI_HDMI_HPD_DETECT) ? 1 : 0; +} + +static void sunxi_hdmi_shutdown(void) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + struct sunxi_hdmi_reg * const hdmi = + (struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE; - /* No need to keep these running */ clrbits_le32(&hdmi->ctrl, SUNXI_HDMI_CTRL_ENABLE); clrbits_le32(&ccm->hdmi_clk_cfg, CCM_HDMI_CTRL_GATE); clrbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_HDMI); @@ -64,8 +70,6 @@ static int sunxi_hdmi_hpd_detect(void) clrbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_HDMI); #endif clock_set_pll3(0); - - return 0; } /* @@ -361,7 +365,7 @@ void *video_hw_init(void) const struct ctfb_res_modes *mode; const char *options; unsigned int depth; - int ret; + int ret, hpd; memset(&sunxi_display, 0, sizeof(struct sunxi_display)); @@ -370,12 +374,16 @@ void *video_hw_init(void) gd->fb_base = gd->ram_top; video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode, &depth, &options); + hpd = video_get_option_int(options, "hpd", 1); + /* Always call hdp_detect, as it also enables various clocks, etc. */ ret = sunxi_hdmi_hpd_detect(); - if (!ret) + if (hpd && !ret) { + sunxi_hdmi_shutdown(); return NULL; - - printf("HDMI connected.\n"); + } + if (ret) + printf("HDMI connected: "); if (mode->vmode != FB_VMODE_NONINTERLACED) { printf("Only non-interlaced modes supported, falling back to 1024x768\n"); |