On 10.03.2017 05:32, Sean Paul wrote:
> From: zain wang <wzz@xxxxxxxxxxxxxx>
>
> There is no register named ANALOGIX_DP_PLL_CTL in Rockchip edp phy reg
> list. We should use BIT_4 in ANALOGIX_DP_PD to control the pll power
> instead of ANALOGIX_DP_PLL_CTL.
>
> Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
> Signed-off-by: zain wang <wzz@xxxxxxxxxxxxxx>
> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Small comment below.
> ---
> drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 20 ++++++++++++--------
> 1 file changed, 12 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
> index 1cb57e528ec8..2cacd1e84b4d 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
> @@ -230,16 +230,20 @@ enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp)
> void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable)
> {
> u32 reg;
> + u32 mask = DP_PLL_PD;
> + u32 pd_addr = ANALOGIX_DP_PLL_CTL;
>
> - if (enable) {
> - reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
> - reg |= DP_PLL_PD;
> - writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
> - } else {
> - reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
> - reg &= ~DP_PLL_PD;
> - writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
> + if (dp->plat_data && is_rockchip(dp->plat_data->dev_type)) {
> + pd_addr = ANALOGIX_DP_PD;
> + mask = RK_PLL_PD;
> }
> +
> + reg = readl(dp->reg_base + pd_addr);
> + if (enable)
> + reg |= mask;
> + else
> + reg &= ~mask;
> + writel(reg, dp->reg_base + pd_addr);
This pattern (readl,set bits,writel) is repeated so many times, maybe it
would be good to add some helper.
Regards
Andrzej
> }
>
> void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
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