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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Harigovindan P <harigovi@codeaurora.org>,
	Rob Clark <robdclark@chromium.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
	freedreno@lists.freedesktop.org
Subject: [PATCH AUTOSEL 4.9 06/13] drm/msm/dsi: save pll state before dsi host is powered off
Date: Mon,  2 Mar 2020 21:49:55 -0500	[thread overview]
Message-ID: <20200303025002.10600-6-sashal@kernel.org> (raw)
In-Reply-To: <20200303025002.10600-1-sashal@kernel.org>

From: Harigovindan P <harigovi@codeaurora.org>

[ Upstream commit a1028dcfd0dd97884072288d0c8ed7f30399b528 ]

Save pll state before dsi host is powered off. Without this change
some register values gets resetted.

Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/dsi/dsi_manager.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 10d49d43c17eb..d46b9e75a8473 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -438,6 +438,7 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
 	struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
 	struct mipi_dsi_host *host = msm_dsi->host;
 	struct drm_panel *panel = msm_dsi->panel;
+	struct msm_dsi_pll *src_pll;
 	bool is_dual_dsi = IS_DUAL_DSI();
 	int ret;
 
@@ -471,6 +472,10 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
 								id, ret);
 	}
 
+	/* Save PLL status if it is a clock source */
+	src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
+	msm_dsi_pll_save_state(src_pll);
+
 	ret = msm_dsi_host_power_off(host);
 	if (ret)
 		pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Rob Clark <robdclark@chromium.org>,
	Sasha Levin <sashal@kernel.org>,
	linux-arm-msm@vger.kernel.org,
	Harigovindan P <harigovi@codeaurora.org>,
	dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org
Subject: [PATCH AUTOSEL 4.9 06/13] drm/msm/dsi: save pll state before dsi host is powered off
Date: Mon,  2 Mar 2020 21:49:55 -0500	[thread overview]
Message-ID: <20200303025002.10600-6-sashal@kernel.org> (raw)
In-Reply-To: <20200303025002.10600-1-sashal@kernel.org>

From: Harigovindan P <harigovi@codeaurora.org>

[ Upstream commit a1028dcfd0dd97884072288d0c8ed7f30399b528 ]

Save pll state before dsi host is powered off. Without this change
some register values gets resetted.

Signed-off-by: Harigovindan P <harigovi@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/msm/dsi/dsi_manager.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 10d49d43c17eb..d46b9e75a8473 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -438,6 +438,7 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
 	struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
 	struct mipi_dsi_host *host = msm_dsi->host;
 	struct drm_panel *panel = msm_dsi->panel;
+	struct msm_dsi_pll *src_pll;
 	bool is_dual_dsi = IS_DUAL_DSI();
 	int ret;
 
@@ -471,6 +472,10 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
 								id, ret);
 	}
 
+	/* Save PLL status if it is a clock source */
+	src_pll = msm_dsi_phy_get_pll(msm_dsi->phy);
+	msm_dsi_pll_save_state(src_pll);
+
 	ret = msm_dsi_host_power_off(host);
 	if (ret)
 		pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
-- 
2.20.1

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  parent reply	other threads:[~2020-03-03  2:52 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-03  2:49 [PATCH AUTOSEL 4.9 01/13] serial: ar933x_uart: set UART_CS_{RX,TX}_READY_ORIDE Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 02/13] usb: gadget: composite: Support more than 500mA MaxPower Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 03/13] usb: gadget: ffs: ffs_aio_cancel(): Save/restore IRQ flags Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 04/13] usb: gadget: serial: fix Tx stall after buffer overflow Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 05/13] drm: msm: Fix return type of dsi_mgr_connector_mode_valid for kCFI Sasha Levin
2020-03-03  2:49   ` Sasha Levin
2020-03-03  2:49 ` Sasha Levin [this message]
2020-03-03  2:49   ` [PATCH AUTOSEL 4.9 06/13] drm/msm/dsi: save pll state before dsi host is powered off Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 07/13] net: phy: restore mdio regs in the iproc mdio driver Sasha Levin
2020-03-03  2:49   ` Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 08/13] net: ks8851-ml: Remove 8-bit bus accessors Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 09/13] net: ks8851-ml: Fix 16-bit data access Sasha Levin
2020-03-03  2:49 ` [PATCH AUTOSEL 4.9 10/13] net: ks8851-ml: Fix 16-bit IO operation Sasha Levin
2020-03-03  2:50 ` [PATCH AUTOSEL 4.9 11/13] watchdog: da9062: do not ping the hw during stop() Sasha Levin
2020-03-03  2:50 ` [PATCH AUTOSEL 4.9 12/13] s390/cio: cio_ignore_proc_seq_next should increase position index Sasha Levin
2020-03-03  2:50 ` [PATCH AUTOSEL 4.9 13/13] x86/boot/compressed: Don't declare __force_order in kaslr_64.c Sasha Levin

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