From: Chris Zhong <zyw@rock-chips.com>
To: dianders@chromium.org, tfiga@chromium.org, heiko@sntech.de,
yzq@rock-chips.com
Cc: linux-rockchip@lists.infradead.org,
Chris Zhong <zyw@rock-chips.com>,
Mark Yao <mark.yao@rock-chips.com>,
David Airlie <airlied@linux.ie>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 4/7] drm/rockchip: dw-mipi: add dw-mipi power domain support
Date: Fri, 8 Jul 2016 17:04:58 +0800 [thread overview]
Message-ID: <1467968701-15620-5-git-send-email-zyw@rock-chips.com> (raw)
In-Reply-To: <1467968701-15620-1-git-send-email-zyw@rock-chips.com>
Reference the power domain incase dw-mipi power down when
in use.
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
---
drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 100da01..15ba796 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -12,6 +12,7 @@
#include <linux/math64.h>
#include <linux/module.h>
#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include <drm/drm_atomic_helper.h>
@@ -293,6 +294,7 @@ struct dw_mipi_dsi {
struct clk *pclk;
struct clk *phy_cfg_clk;
+ int dpms_mode;
unsigned int lane_mbps; /* per lane */
u32 channel;
u32 lanes;
@@ -844,6 +846,11 @@ static void dw_mipi_dsi_encoder_mode_set(struct drm_encoder *encoder,
struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
int ret;
+ if (dsi->dpms_mode == DRM_MODE_DPMS_ON)
+ return;
+
+ pm_runtime_get_sync(dsi->dev);
+
dsi->mode = adjusted_mode;
ret = dw_mipi_dsi_get_lane_bps(dsi);
@@ -876,6 +883,9 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder)
{
struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
+ if (dsi->dpms_mode != DRM_MODE_DPMS_ON)
+ return;
+
drm_panel_disable(dsi->panel);
if (clk_prepare_enable(dsi->pclk)) {
@@ -896,6 +906,8 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder)
dw_mipi_dsi_set_mode(dsi, DW_MIPI_DSI_CMD_MODE);
dw_mipi_dsi_disable(dsi);
clk_disable_unprepare(dsi->pclk);
+ pm_runtime_put(dsi->dev);
+ dsi->dpms_mode = DRM_MODE_DPMS_OFF;
}
static void dw_mipi_dsi_encoder_commit(struct drm_encoder *encoder)
@@ -929,6 +941,7 @@ static void dw_mipi_dsi_encoder_commit(struct drm_encoder *encoder)
regmap_write(dsi->grf_regmap, pdata->grf_switch_reg, val);
dev_dbg(dsi->dev, "vop %s output to dsi0\n", (mux) ? "LIT" : "BIG");
+ dsi->dpms_mode = DRM_MODE_DPMS_ON;
}
static int
@@ -1150,6 +1163,7 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
dsi->dev = dev;
dsi->pdata = pdata;
+ dsi->dpms_mode = DRM_MODE_DPMS_OFF;
ret = rockchip_mipi_parse_dt(dsi);
if (ret)
@@ -1195,6 +1209,8 @@ static int dw_mipi_dsi_bind(struct device *dev, struct device *master,
dev_set_drvdata(dev, dsi);
+ pm_runtime_enable(dev);
+
dsi->dsi_host.ops = &dw_mipi_dsi_host_ops;
dsi->dsi_host.dev = dev;
return mipi_dsi_host_register(&dsi->dsi_host);
@@ -1210,6 +1226,7 @@ static void dw_mipi_dsi_unbind(struct device *dev, struct device *master,
struct dw_mipi_dsi *dsi = dev_get_drvdata(dev);
mipi_dsi_host_unregister(&dsi->dsi_host);
+ pm_runtime_disable(dev);
clk_disable_unprepare(dsi->pllref_clk);
}
--
2.6.3
next prev parent reply other threads:[~2016-07-08 9:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-08 9:04 [PATCH 0/7] Rockchip dw-mipi-dsi driver Chris Zhong
2016-07-08 9:04 ` [PATCH 1/7] dt-bindings: add rk3399 support for dw-mipi-rockchip Chris Zhong
2016-07-13 13:49 ` Rob Herring
2016-07-08 9:04 ` [PATCH 2/7] DRM: mipi: support rk3399 mipi dsi Chris Zhong
2016-07-08 9:04 ` [PATCH 3/7] dt-bindings: add power domain node for dw-mipi-rockchip Chris Zhong
2016-07-13 13:50 ` Rob Herring
2016-07-08 9:04 ` Chris Zhong [this message]
2016-07-08 9:04 ` [PATCH 5/7] drm/rockchip: dw-mipi: support HPD poll Chris Zhong
2016-07-08 13:52 ` John Keeping
2016-07-11 0:46 ` Mark yao
2016-07-11 9:20 ` John Keeping
2016-07-08 9:05 ` [PATCH 6/7] drm/rockchip: dw-mipi: fix phy clk lane stop state timeout Chris Zhong
2016-07-08 9:05 ` [PATCH 7/7] drm/rockchip: dw-mipi: fix insufficient bandwidth of some panel Chris Zhong
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