On 08/11/2019 01:02, Heiko Stuebner wrote:
> If implementation-specific phy_ops need to be defined they probably
> should be enabled before trying to talk to the panel and disabled only
> after the panel was disabled.
>
> Right now they are enabled last and disabled first, so might make it
> impossible to talk to some panels - example for this being the px30
> with an external Innosilicon dphy that needs the phy to be enabled
> to transfer commands to the panel.
>
> So move the calls appropriately.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 13 ++++++-------
> 1 file changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index 675442bfc1bd..49f5600a1dea 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -797,9 +797,6 @@ static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge)
> struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
> const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
>
> - if (phy_ops->power_off)
> - phy_ops->power_off(dsi->plat_data->priv_data);
> -
> /*
> * Switch to command mode before panel-bridge post_disable &
> * panel unprepare.
> @@ -816,6 +813,9 @@ static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge)
> */
> dsi->panel_bridge->funcs->post_disable(dsi->panel_bridge);
>
> + if (phy_ops->power_off)
> + phy_ops->power_off(dsi->plat_data->priv_data);
> +
> if (dsi->slave) {
> dw_mipi_dsi_disable(dsi->slave);
> clk_disable_unprepare(dsi->slave->pclk);
> @@ -882,6 +882,9 @@ static void dw_mipi_dsi_mode_set(struct dw_mipi_dsi *dsi,
>
> /* Switch to cmd mode for panel-bridge pre_enable & panel prepare */
> dw_mipi_dsi_set_mode(dsi, 0);
> +
> + if (phy_ops->power_on)
> + phy_ops->power_on(dsi->plat_data->priv_data);
> }
>
> static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
> @@ -898,15 +901,11 @@ static void dw_mipi_dsi_bridge_mode_set(struct drm_bridge *bridge,
> static void dw_mipi_dsi_bridge_enable(struct drm_bridge *bridge)
> {
> struct dw_mipi_dsi *dsi = bridge_to_dsi(bridge);
> - const struct dw_mipi_dsi_phy_ops *phy_ops = dsi->plat_data->phy_ops;
>
> /* Switch to video mode for panel-bridge enable & panel enable */
> dw_mipi_dsi_set_mode(dsi, MIPI_DSI_MODE_VIDEO);
> if (dsi->slave)
> dw_mipi_dsi_set_mode(dsi->slave, MIPI_DSI_MODE_VIDEO);
> -
> - if (phy_ops->power_on)
> - phy_ops->power_on(dsi->plat_data->priv_data);
> }
>
> static enum drm_mode_status
>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
