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drm/msm/dsi: fix check-before-set in the 7nm dsi_pll code

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[ Upstream commit 3b24cdfc721a5f1098da22f9f68ff5f4a5efccc9 ]

Fix setting min/max DSI PLL rate for the V4.1 7nm DSI PLL (used on
sm8250). Current code checks for pll->type before it is set (as it is
set in the msm_dsi_pll_init() after calling device-specific functions.

Cc: Jonathan Marek <jonathan@marek.ca>
Fixes: 1ef7c99d14 ("drm/msm/dsi: add support for 7nm DSI PHY/PLL")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Baryshkov 2021-02-25 01:47:51 +03:00 committed by Greg Kroah-Hartman
parent 126aa8f234
commit 7637048707
3 changed files with 8 additions and 5 deletions
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2
drivers/gpu/drm/msm/dsi/pll/dsi_pll.c
View File

@ -163,7 +163,7 @@ struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
break;
case MSM_DSI_PHY_7NM:
case MSM_DSI_PHY_7NM_V4_1:
pll = msm_dsi_pll_7nm_init(pdev, id);
pll = msm_dsi_pll_7nm_init(pdev, type, id);
break;
default:
pll = ERR_PTR(-ENXIO);

6
drivers/gpu/drm/msm/dsi/pll/dsi_pll.h
View File

@ -117,10 +117,12 @@ msm_dsi_pll_10nm_init(struct platform_device *pdev, int id)
}
#endif
#ifdef CONFIG_DRM_MSM_DSI_7NM_PHY
struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev, int id);
struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev,
enum msm_dsi_phy_type type, int id);
#else
static inline struct msm_dsi_pll *
msm_dsi_pll_7nm_init(struct platform_device *pdev, int id)
msm_dsi_pll_7nm_init(struct platform_device *pdev,
enum msm_dsi_phy_type type, int id)
{
return ERR_PTR(-ENODEV);
}

5
drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c
View File

@ -852,7 +852,8 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm)
return ret;
}
struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev, int id)
struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev,
enum msm_dsi_phy_type type, int id)
{
struct dsi_pll_7nm *pll_7nm;
struct msm_dsi_pll *pll;
@ -885,7 +886,7 @@ struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev, int id)
pll = &pll_7nm->base;
pll->min_rate = 1000000000UL;
pll->max_rate = 3500000000UL;
if (pll->type == MSM_DSI_PHY_7NM_V4_1) {
if (type == MSM_DSI_PHY_7NM_V4_1) {
pll->min_rate = 600000000UL;
pll->max_rate = (unsigned long)5000000000ULL;
/* workaround for max rate overflowing on 32-bit builds: */