[PATCH v8 7/8] drm/bridge/synopsys: dw-hdmi: Do not use device's drvdata

From: Thierry Escande
Date: Wed Jan 10 2018 - 11:24:31 EST

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From: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx>

Let plat drivers own the drvdata, so that they could cleanup resources
in their unbind().

Signed-off-by: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx>
Signed-off-by: Thierry Escande <thierry.escande@xxxxxxxxxxxxx>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 43 ++++++++++-------------------
drivers/gpu/drm/imx/dw_hdmi-imx.c | 22 +++++++++------
drivers/gpu/drm/meson/meson_dw_hdmi.c | 20 ++++++++++----
drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c | 14 ++++++++--
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 22 +++++++++------
include/drm/bridge/dw_hdmi.h | 17 ++++++------
6 files changed, 77 insertions(+), 61 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 1cc63a18b7d5..f0380bcae513 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2073,7 +2073,7 @@ static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
return ret;
}

-void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
+void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
{
mutex_lock(&hdmi->mutex);

@@ -2099,13 +2099,6 @@ void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
}
mutex_unlock(&hdmi->mutex);
}
-
-void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense)
-{
- struct dw_hdmi *hdmi = dev_get_drvdata(dev);
-
- __dw_hdmi_setup_rx_sense(hdmi, hpd, rx_sense);
-}
EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense);

static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
@@ -2141,9 +2134,8 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
*/
if (intr_stat &
(HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
- __dw_hdmi_setup_rx_sense(hdmi,
- phy_stat & HDMI_PHY_HPD,
- phy_stat & HDMI_PHY_RX_SENSE);
+ dw_hdmi_setup_rx_sense(hdmi, phy_stat & HDMI_PHY_HPD,
+ phy_stat & HDMI_PHY_RX_SENSE);

if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
cec_notifier_set_phys_addr(hdmi->cec_notifier,
@@ -2533,8 +2525,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
if (hdmi->i2c)
dw_hdmi_i2c_init(hdmi);

- platform_set_drvdata(pdev, hdmi);
-
return hdmi;

err_iahb:
@@ -2584,25 +2574,23 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
/* -----------------------------------------------------------------------------
* Probe/remove API, used from platforms based on the DRM bridge API.
*/
-int dw_hdmi_probe(struct platform_device *pdev,
- const struct dw_hdmi_plat_data *plat_data)
+struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
+ const struct dw_hdmi_plat_data *plat_data)
{
struct dw_hdmi *hdmi;

hdmi = __dw_hdmi_probe(pdev, plat_data);
if (IS_ERR(hdmi))
- return PTR_ERR(hdmi);
+ return hdmi;

drm_bridge_add(&hdmi->bridge);

- return 0;
+ return hdmi;
}
EXPORT_SYMBOL_GPL(dw_hdmi_probe);

-void dw_hdmi_remove(struct platform_device *pdev)
+void dw_hdmi_remove(struct dw_hdmi *hdmi)
{
- struct dw_hdmi *hdmi = platform_get_drvdata(pdev);
-
drm_bridge_remove(&hdmi->bridge);

__dw_hdmi_remove(hdmi);
@@ -2612,31 +2600,30 @@ EXPORT_SYMBOL_GPL(dw_hdmi_remove);
/* -----------------------------------------------------------------------------
* Bind/unbind API, used from platforms based on the component framework.
*/
-int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
- const struct dw_hdmi_plat_data *plat_data)
+struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev,
+ struct drm_encoder *encoder,
+ const struct dw_hdmi_plat_data *plat_data)
{
struct dw_hdmi *hdmi;
int ret;

hdmi = __dw_hdmi_probe(pdev, plat_data);
if (IS_ERR(hdmi))
- return PTR_ERR(hdmi);
+ return hdmi;

ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL);
if (ret) {
__dw_hdmi_remove(hdmi);
DRM_ERROR("Failed to initialize bridge with drm\n");
- return ret;
+ return ERR_PTR(ret);
}

- return 0;
+ return hdmi;
}
EXPORT_SYMBOL_GPL(dw_hdmi_bind);

-void dw_hdmi_unbind(struct device *dev)
+void dw_hdmi_unbind(struct dw_hdmi *hdmi)
{
- struct dw_hdmi *hdmi = dev_get_drvdata(dev);
-
__dw_hdmi_remove(hdmi);
}
EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index b62763aa8706..b01d03e02ce0 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -26,6 +26,8 @@ struct imx_hdmi {
struct device *dev;
struct drm_encoder encoder;
struct regmap *regmap;
+
+ struct dw_hdmi *hdmi;
};

static inline struct imx_hdmi *enc_to_imx_hdmi(struct drm_encoder *e)
@@ -239,22 +241,24 @@ static int dw_hdmi_imx_bind(struct device *dev, struct device *master,
drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);

- ret = dw_hdmi_bind(pdev, encoder, plat_data);
+ hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
+ if (IS_ERR(hdmi->hdmi)) {
+ encoder->funcs->destroy(encoder);
+ return PTR_ERR(hdmi->hdmi);
+ }

- /*
- * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
- * which would have called the encoder cleanup. Do it manually.
- */
- if (ret)
- drm_encoder_cleanup(encoder);
+ dev_set_drvdata(dev, hdmi);

- return ret;
+ return 0;
}

static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,
void *data)
{
- return dw_hdmi_unbind(dev);
+ struct imx_hdmi *hdmi = dev_get_drvdata(dev);
+
+ dw_hdmi_unbind(hdmi->hdmi);
+ hdmi->encoder.funcs->destroy(&hdmi->encoder);
}

static const struct component_ops dw_hdmi_imx_ops = {
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index 17de3afd98f6..3f1ec9a5cbfb 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -140,6 +140,8 @@ struct meson_dw_hdmi {
struct clk *venci_clk;
struct regulator *hdmi_supply;
u32 irq_stat;
+
+ struct dw_hdmi *hdmi;
};
#define encoder_to_meson_dw_hdmi(x) \
container_of(x, struct meson_dw_hdmi, encoder)
@@ -528,7 +530,7 @@ static irqreturn_t dw_hdmi_top_thread_irq(int irq, void *dev_id)
if (stat & HDMITX_TOP_INTR_HPD_RISE)
hpd_connected = true;

- dw_hdmi_setup_rx_sense(dw_hdmi->dev, hpd_connected,
+ dw_hdmi_setup_rx_sense(dw_hdmi->hdmi, hpd_connected,
hpd_connected);

drm_helper_hpd_irq_event(dw_hdmi->encoder.dev);
@@ -878,9 +880,14 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
dw_plat_data->input_bus_format = MEDIA_BUS_FMT_YUV8_1X24;
dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709;

- ret = dw_hdmi_bind(pdev, encoder, &meson_dw_hdmi->dw_plat_data);
- if (ret)
- return ret;
+ meson_dw_hdmi->hdmi = dw_hdmi_bind(pdev, encoder,
+ &meson_dw_hdmi->dw_plat_data);
+ if (IS_ERR(meson_dw_hdmi->hdmi)) {
+ encoder->funcs->destroy(encoder);
+ return PTR_ERR(meson_dw_hdmi->hdmi);
+ }
+
+ dev_set_drvdata(dev, meson_dw_hdmi);

DRM_DEBUG_DRIVER("HDMI controller initialized\n");

@@ -890,7 +897,10 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
static void meson_dw_hdmi_unbind(struct device *dev, struct device *master,
void *data)
{
- dw_hdmi_unbind(dev);
+ struct meson_dw_hdmi *meson_dw_hdmi = dev_get_drvdata(dev);
+
+ dw_hdmi_unbind(meson_dw_hdmi->hdmi);
+ meson_dw_hdmi->encoder.funcs->destroy(&meson_dw_hdmi->encoder);
}

static const struct component_ops meson_dw_hdmi_ops = {
diff --git a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
index dc85b53d58ef..76210ae25094 100644
--- a/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
+++ b/drivers/gpu/drm/rcar-du/rcar_dw_hdmi.c
@@ -68,12 +68,22 @@ static const struct dw_hdmi_plat_data rcar_dw_hdmi_plat_data = {

static int rcar_dw_hdmi_probe(struct platform_device *pdev)
{
- return dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
+ struct dw_hdmi *hdmi;
+
+ hdmi = dw_hdmi_probe(pdev, &rcar_dw_hdmi_plat_data);
+ if (IS_ERR(hdmi))
+ return PTR_ERR(hdmi);
+
+ platform_set_drvdata(pdev, hdmi);
+
+ return 0;
}

static int rcar_dw_hdmi_remove(struct platform_device *pdev)
{
- dw_hdmi_remove(pdev);
+ struct dw_hdmi *hdmi = platform_get_drvdata(pdev);
+
+ dw_hdmi_remove(hdmi);

return 0;
}
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 1eb02a82fd91..d406d7779ed9 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -48,6 +48,8 @@ struct rockchip_hdmi {
const struct rockchip_hdmi_chip_data *chip_data;
struct clk *vpll_clk;
struct clk *grf_clk;
+
+ struct dw_hdmi *hdmi;
};

#define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x)
@@ -377,22 +379,24 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);

- ret = dw_hdmi_bind(pdev, encoder, plat_data);
+ hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
+ if (IS_ERR(hdmi->hdmi)) {
+ encoder->funcs->destroy(encoder);
+ return PTR_ERR(hdmi->hdmi);
+ }

- /*
- * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
- * which would have called the encoder cleanup. Do it manually.
- */
- if (ret)
- drm_encoder_cleanup(encoder);
+ dev_set_drvdata(dev, hdmi);

- return ret;
+ return 0;
}

static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
void *data)
{
- return dw_hdmi_unbind(dev);
+ struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
+
+ dw_hdmi_unbind(hdmi->hdmi);
+ hdmi->encoder.funcs->destroy(&hdmi->encoder);
}

static const struct component_ops dw_hdmi_rockchip_ops = {
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 182f83283e24..29b8900caaf7 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -143,14 +143,15 @@ struct dw_hdmi_plat_data {
unsigned long mpixelclock);
};

-int dw_hdmi_probe(struct platform_device *pdev,
- const struct dw_hdmi_plat_data *plat_data);
-void dw_hdmi_remove(struct platform_device *pdev);
-void dw_hdmi_unbind(struct device *dev);
-int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
- const struct dw_hdmi_plat_data *plat_data);
-
-void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense);
+struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev,
+ const struct dw_hdmi_plat_data *plat_data);
+void dw_hdmi_remove(struct dw_hdmi *hdmi);
+void dw_hdmi_unbind(struct dw_hdmi *hdmi);
+struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev,
+ struct drm_encoder *encoder,
+ const struct dw_hdmi_plat_data *plat_data);
+
+void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense);

void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
void dw_hdmi_audio_enable(struct dw_hdmi *hdmi);
--
2.14.1

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