Hi Russell & Andy
On 08/09/2015 12:03 AM, Russell King wrote:
> The FSL kernel detects the HDMI vendor id, and uses this to set
> hdmi->edid_cfg.hdmi_cap, which is then used to set mdvi appropriately,
> rather than detecting whether we are outputting a CEA mode. Update
> the dw_hdmi code to use this logic, but lets eliminate the mdvi
> variable, prefering the more verbose "hdmi->sink_is_hdmi" instead.
>
> Use the generic drm_detect_hdmi_monitor() to detect a HDMI sink.
>
> Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
Actually I have posted similarly changes before, feel better about
this one, and I have backport those 06/12 & 07/12 to chrome-3.14
tree, audio still works rightly when I changing the display resolutions.
So I would like to share:
Tested-by: Yakir Yang <ykk at rock-chips.com>
Besides, Andy, would you like to share your ACK here :)
Best regards,
- Yakir
> ---
> drivers/gpu/drm/bridge/dw_hdmi.c | 26 ++++++++++++--------------
> 1 file changed, 12 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c
> b/drivers/gpu/drm/bridge/dw_hdmi.c
> index 2e211b8331ed..7f764716f3c4 100644
> --- a/drivers/gpu/drm/bridge/dw_hdmi.c
> +++ b/drivers/gpu/drm/bridge/dw_hdmi.c
> @@ -82,7 +82,6 @@ static const u16 csc_coeff_rgb_in_eitu709[3][4] = {
> };
>
> struct hdmi_vmode {
> - bool mdvi;
> bool mdataenablepolarity;
>
> unsigned int mpixelclock;
> @@ -123,6 +122,7 @@ struct dw_hdmi {
>
> struct i2c_adapter *ddc;
> void __iomem *regs;
> + bool sink_is_hdmi;
>
> spinlock_t audio_lock;
> struct mutex audio_mutex;
> @@ -913,11 +913,10 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi,
> unsigned char prep,
> static int dw_hdmi_phy_init(struct dw_hdmi *hdmi)
> {
> int i, ret;
> - bool cscon = false;
> + bool cscon;
>
> /*check csc whether needed activated in HDMI mode */
> - cscon = (is_color_space_conversion(hdmi) &&
> - !hdmi->hdmi_data.video_mode.mdvi);
> + cscon = hdmi->sink_is_hdmi && is_color_space_conversion(hdmi);
>
> /* HDMI Phy spec says to do the phy initialization sequence twice */
> for (i = 0; i < 2; i++) {
> @@ -1094,9 +1093,9 @@ static void hdmi_av_composer(struct dw_hdmi *hdmi,
> HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
> HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
>
> - inv_val |= (vmode->mdvi ?
> - HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE :
> - HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE);
> + inv_val |= hdmi->sink_is_hdmi ?
> + HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
> + HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE;
>
> hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF);
>
> @@ -1236,10 +1235,8 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct
> drm_display_mode *mode)
>
> if (!hdmi->vic) {
> dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n");
> - hdmi->hdmi_data.video_mode.mdvi = true;
> } else {
> dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic);
> - hdmi->hdmi_data.video_mode.mdvi = false;
> }
>
> if ((hdmi->vic == 6) || (hdmi->vic == 7) ||
> @@ -1275,10 +1272,8 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct
> drm_display_mode *mode)
> dw_hdmi_enable_video_path(hdmi);
>
> /* not for DVI mode */
> - if (hdmi->hdmi_data.video_mode.mdvi) {
> - dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
> - } else {
> - dev_dbg(hdmi->dev, "%s CEA mode\n", __func__);
> + if (hdmi->sink_is_hdmi) {
> + dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__);
>
> /* HDMI Initialization Step E - Configure audio */
> hdmi_clk_regenerator_update_pixel_clock(hdmi);
> @@ -1286,6 +1281,8 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct
> drm_display_mode *mode)
>
> /* HDMI Initialization Step F - Configure AVI InfoFrame */
> hdmi_config_AVI(hdmi, mode);
> + } else {
> + dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
> }
>
> hdmi_video_packetize(hdmi);
> @@ -1294,7 +1291,7 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct
> drm_display_mode *mode)
> hdmi_tx_hdcp_config(hdmi);
>
> dw_hdmi_clear_overflow(hdmi);
> - if (hdmi->cable_plugin && !hdmi->hdmi_data.video_mode.mdvi)
> + if (hdmi->cable_plugin && hdmi->sink_is_hdmi)
> hdmi_enable_overflow_interrupts(hdmi);
>
> return 0;
> @@ -1444,6 +1441,7 @@ static int dw_hdmi_connector_get_modes(struct
> drm_connector *connector)
> dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
> edid->width_cm, edid->height_cm);
>
> + hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
> drm_mode_connector_update_edid_property(connector, edid);
> ret = drm_add_edid_modes(connector, edid);
> kfree(edid);
