From: Seung-Woo Kim Date: Tue, 24 Apr 2012 08:39:15 +0000 (+0900) Subject: drm/exynos: enable dvi mode for dvi monitor X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=872d20d66c0b7de0787675dce8569a61e4d9bc00;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git drm/exynos: enable dvi mode for dvi monitor Hdmi monitor and dvi monitor can be distinguished with edid. This patch enables dvi mode if dvi monitor is connected and does not enable audio feature for dvi mode because dvi has no audio feature. Signed-off-by: Seung-Woo Kim Signed-off-by: Kyungmin Park Signed-off-by: Inki Dae --- diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index ad53c4808bdb..5ca0a9f1f43a 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -60,6 +60,7 @@ struct hdmi_context { bool hpd; bool powered; bool is_v13; + bool dvi_mode; struct mutex hdmi_mutex; struct resource *regs_res; @@ -1211,10 +1212,12 @@ static int hdmi_get_edid(void *ctx, struct drm_connector *connector, raw_edid = drm_get_edid(connector, hdata->ddc_port->adapter); if (raw_edid) { + hdata->dvi_mode = !drm_detect_hdmi_monitor(raw_edid); memcpy(edid, raw_edid, min((1 + raw_edid->extensions) * EDID_LENGTH, len)); - DRM_DEBUG_KMS("width[%d] x height[%d]\n", - raw_edid->width_cm, raw_edid->height_cm); + DRM_DEBUG_KMS("%s : width[%d] x height[%d]\n", + (hdata->dvi_mode ? "dvi monitor" : "hdmi monitor"), + raw_edid->width_cm, raw_edid->height_cm); } else { return -ENODEV; } @@ -1437,10 +1440,7 @@ static void hdmi_audio_init(struct hdmi_context *hdata) static void hdmi_audio_control(struct hdmi_context *hdata, bool onoff) { - u32 mod; - - mod = hdmi_reg_read(hdata, HDMI_MODE_SEL); - if (mod & HDMI_DVI_MODE_EN) + if (hdata->dvi_mode) return; hdmi_reg_writeb(hdata, HDMI_AUI_CON, onoff ? 2 : 0); @@ -1479,6 +1479,14 @@ static void hdmi_conf_init(struct hdmi_context *hdata) /* disable bluescreen */ hdmi_reg_writemask(hdata, HDMI_CON_0, 0, HDMI_BLUE_SCR_EN); + if (hdata->dvi_mode) { + /* choose DVI mode */ + hdmi_reg_writemask(hdata, HDMI_MODE_SEL, + HDMI_MODE_DVI_EN, HDMI_MODE_MASK); + hdmi_reg_writeb(hdata, HDMI_CON_2, + HDMI_VID_PREAMBLE_DIS | HDMI_GUARD_BAND_DIS); + } + if (hdata->is_v13) { /* choose bluescreen (fecal) color */ hdmi_reg_writeb(hdata, HDMI_V13_BLUE_SCREEN_0, 0x12); diff --git a/drivers/gpu/drm/exynos/regs-hdmi.h b/drivers/gpu/drm/exynos/regs-hdmi.h index 3c04bea842ce..9cc7c5e9718c 100644 --- a/drivers/gpu/drm/exynos/regs-hdmi.h +++ b/drivers/gpu/drm/exynos/regs-hdmi.h @@ -138,14 +138,16 @@ #define HDMI_ASP_MASK (1 << 2) #define HDMI_EN (1 << 0) +/* HDMI_CON_2 */ +#define HDMI_VID_PREAMBLE_DIS (1 << 5) +#define HDMI_GUARD_BAND_DIS (1 << 1) + /* HDMI_PHY_STATUS */ #define HDMI_PHY_STATUS_READY (1 << 0) /* HDMI_MODE_SEL */ #define HDMI_MODE_HDMI_EN (1 << 1) #define HDMI_MODE_DVI_EN (1 << 0) -#define HDMI_DVI_MODE_EN (1) -#define HDMI_DVI_MODE_DIS (0) #define HDMI_MODE_MASK (3 << 0) /* HDMI_TG_CMD */