From 4ddc33d45b25faedbceb5c8c4f4c26325c323591 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date: Wed, 6 Oct 2021 23:48:28 +0300
Subject: drm/msm/dsi: stop setting clock parents manually
Git-commit: 9b077c1581cf57206f5f7788ea569e8fae0719a7
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
There is no reason to set clock parents manually, use device tree to
assign DSI/display clock parents to DSI PHY clocks. Dropping this manual
setup allows us to drop repeating code and to move registration of hw
clock providers to generic place.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Link: https://lore.kernel.org/r/20211006204828.1218225-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/msm/dsi/dsi.h | 2 --
drivers/gpu/drm/msm/dsi/dsi_host.c | 51 ---------------------------
drivers/gpu/drm/msm/dsi/dsi_manager.c | 11 ++----
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 11 ------
4 files changed, 2 insertions(+), 73 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index abca3bbe5923..f46df52c6985 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -175,8 +175,6 @@ int msm_dsi_phy_enable(struct msm_dsi_phy *phy,
void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
enum msm_dsi_phy_usecase uc);
-int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy,
- struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy);
int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy);
void msm_dsi_phy_snapshot(struct msm_disp_state *disp_state, struct msm_dsi_phy *phy);
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 0b7c29dbfc25..5b4bb722f750 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2187,57 +2187,6 @@ void msm_dsi_host_set_phy_mode(struct mipi_dsi_host *host,
msm_host->cphy_mode = src_phy->cphy_mode;
}
-int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
- struct msm_dsi_phy *src_phy)
-{
- struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
- struct clk *byte_clk_provider, *pixel_clk_provider;
- int ret;
-
- ret = msm_dsi_phy_get_clk_provider(src_phy,
- &byte_clk_provider, &pixel_clk_provider);
- if (ret) {
- pr_info("%s: can't get provider from pll, don't set parent\n",
- __func__);
- return 0;
- }
-
- ret = clk_set_parent(msm_host->byte_clk_src, byte_clk_provider);
- if (ret) {
- pr_err("%s: can't set parent to byte_clk_src. ret=%d\n",
- __func__, ret);
- goto exit;
- }
-
- ret = clk_set_parent(msm_host->pixel_clk_src, pixel_clk_provider);
- if (ret) {
- pr_err("%s: can't set parent to pixel_clk_src. ret=%d\n",
- __func__, ret);
- goto exit;
- }
-
- if (msm_host->dsi_clk_src) {
- ret = clk_set_parent(msm_host->dsi_clk_src, pixel_clk_provider);
- if (ret) {
- pr_err("%s: can't set parent to dsi_clk_src. ret=%d\n",
- __func__, ret);
- goto exit;
- }
- }
-
- if (msm_host->esc_clk_src) {
- ret = clk_set_parent(msm_host->esc_clk_src, byte_clk_provider);
- if (ret) {
- pr_err("%s: can't set parent to esc_clk_src. ret=%d\n",
- __func__, ret);
- goto exit;
- }
- }
-
-exit:
- return ret;
-}
-
void msm_dsi_host_reset_phy(struct mipi_dsi_host *host)
{
struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index a4e5a5becae8..681ca74fe410 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -80,10 +80,7 @@ static int dsi_mgr_setup_components(int id)
msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);
msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);
- ret = msm_dsi_host_set_src_pll(msm_dsi->host, msm_dsi->phy);
- } else if (!other_dsi) {
- ret = 0;
- } else {
+ } else if (other_dsi) {
struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ?
msm_dsi : other_dsi;
struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(id) ?
@@ -109,13 +106,9 @@ static int dsi_mgr_setup_components(int id)
MSM_DSI_PHY_SLAVE);
msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);
msm_dsi_host_set_phy_mode(other_dsi->host, other_dsi->phy);
- ret = msm_dsi_host_set_src_pll(msm_dsi->host, clk_master_dsi->phy);
- if (ret)
- return ret;
- ret = msm_dsi_host_set_src_pll(other_dsi->host, clk_master_dsi->phy);
}
- return ret;
+ return 0;
}
static int enable_phy(struct msm_dsi *msm_dsi,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index 9842e04b5858..0b2ae5c15240 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -892,17 +892,6 @@ bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable)
return phy->cfg->ops.set_continuous_clock(phy, enable);
}
-int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy,
- struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
-{
- if (byte_clk_provider)
- *byte_clk_provider = phy->provided_clocks->hws[DSI_BYTE_PLL_CLK]->clk;
- if (pixel_clk_provider)
- *pixel_clk_provider = phy->provided_clocks->hws[DSI_PIXEL_PLL_CLK]->clk;
-
- return 0;
-}
-
void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy)
{
if (phy->cfg->ops.save_pll_state) {
--
2.38.1