Re: [PATCH v5 20/36] drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll

Archit Taneja
2018-03-14T06:33:02Z

On Saturday 10 March 2018 03:53 AM, Enric Balletbo i Serra wrote:
> From: zain wang <wzz@rock-chips.com>
>
> 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.
>

Reviewed-by: Archit Taneja <architt@codeaurora.org>

Thanks,
Archit

> Cc: Douglas Anderson <dianders@chromium.org>
> Signed-off-by: zain wang <wzz@rock-chips.com>
> Signed-off-by: Sean Paul <seanpaul@chromium.org>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>
> 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 7b7fd227e1f9..02ab1aaa9993 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);
> }
>
> void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
>