Hi Jose,
On 01/18/2017 11:40 AM, Jose Abreu wrote:
> Hi Neil,
>
>
> On 17-01-2017 12:31, Neil Armstrong wrote:
>> @@ -1434,9 +1434,18 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
>> hdmi_av_composer(hdmi, mode);
>>
>> /* HDMI Initializateion Step B.2 */
>> - ret = dw_hdmi_phy_init(hdmi);
>> - if (ret)
>> - return ret;
>> + if (hdmi->plat_data->hdmi_phy_init) {
>> + ret = hdmi->plat_data->hdmi_phy_init(hdmi, hdmi->plat_data,
>> @@ -1551,7 +1560,11 @@ static void dw_hdmi_poweron(struct dw_hdmi *hdmi)
>>
>> static void dw_hdmi_poweroff(struct dw_hdmi *hdmi)
>> {
>> - dw_hdmi_phy_disable(hdmi);
>> + if (hdmi->phy_enabled && hdmi->plat_data->hdmi_phy_disable) {
>> + hdmi->plat_data->hdmi_phy_disable(hdmi, hdmi->plat_data);
>> + hdmi->phy_enabled = false;
>> + } else
>> + dw_hdmi_phy_disable(hdmi);
>> hdmi->bridge_is_on = false;
>> }
>>
>> @@ -1921,7 +1962,9 @@ static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi)
>> return -ENODEV;
>> }
>>
>> - if (!hdmi->phy->configure && !hdmi->plat_data->configure_phy) {
>> + if (!hdmi->phy->configure &&
>> + !hdmi->plat_data->configure_phy &&
>> + !hdmi->plat_data->hdmi_phy_init) {
>> dev_err(hdmi->dev, "%s requires platform support\n",
>> hdmi->phy->name);
>> return -ENODEV;
>> @@ -2119,9 +2164,10 @@ static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi)
>> + if (!hdmi->plat_data || !hdmi->plat_data->hdmi_read_hpd)
>> + /* Unmute interrupts */
>> + hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
>> + HDMI_IH_MUTE_PHY_STAT0);
>>
>>
>
> [sniped some parts of the patch]
>
> I personally don't like this kind of 'if plat_data ... else ...'
> Can't we just abstract all of the phy configuration (for a
> Synopsys Phy) to a new file and then pass it always in pdata as
> default? Then overwrite it with custom one if needed. Much like
> what you did with the regmap. Or even leave it in dw-hdmi.c but
> have a generic pdata structure with generic phy init/disable
> functions.
It's the idea we discussed with Laurent.
Keeping the Synopsys PHY code inside the dw-hdmi driver would be simpler.
But don't you think adding a proper "ops" structure apart from the plat_data
should be necessary ?
Neil
>
> Best regards,
> Jose Miguel Abreu
>
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