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drm/msm/hdmi: refactor bind/init

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Split up hdmi_init() into hdmi_init() (done at hdmi sub-device
bind/probe time) and hdmi_modeset_init() done from master driver's
modeset_init().

Anything that can fail due to dependencies on other drivers which
may be missing or not probed yet should go in hdmi_init(), so that
devm error/cleanup paths work properly.

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2014-11-04 13:33:14 -05:00
parent bc00ae02e4
commit 067fef372c
7 changed files with 85 additions and 55 deletions
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99
drivers/gpu/drm/msm/hdmi/hdmi.c
View File

@ -68,24 +68,17 @@ void hdmi_destroy(struct kref *kref)
platform_set_drvdata(hdmi->pdev, NULL);
}
/* initialize connector */
struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
/* construct hdmi at bind/probe time, grab all the resources. If
* we are to EPROBE_DEFER we want to do it here, rather than later
* at modeset_init() time
*/
static struct hdmi *hdmi_init(struct platform_device *pdev)
{
struct hdmi_platform_config *config = pdev->dev.platform_data;
struct hdmi *hdmi = NULL;
struct msm_drm_private *priv = dev->dev_private;
struct platform_device *pdev = priv->hdmi_pdev;
struct hdmi_platform_config *config;
int i, ret;
if (!pdev) {
dev_err(dev->dev, "no hdmi device\n");
ret = -ENXIO;
goto fail;
}
config = pdev->dev.platform_data;
hdmi = kzalloc(sizeof(*hdmi), GFP_KERNEL);
hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
if (!hdmi) {
ret = -ENOMEM;
goto fail;
@ -93,12 +86,8 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
kref_init(&hdmi->refcount);
hdmi->dev = dev;
hdmi->pdev = pdev;
hdmi->config = config;
hdmi->encoder = encoder;
hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
/* not sure about which phy maps to which msm.. probably I miss some */
if (config->phy_init)
@ -108,7 +97,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
if (IS_ERR(hdmi->phy)) {
ret = PTR_ERR(hdmi->phy);
dev_err(dev->dev, "failed to load phy: %d\n", ret);
dev_err(&pdev->dev, "failed to load phy: %d\n", ret);
hdmi->phy = NULL;
goto fail;
}
@ -127,7 +116,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
config->hpd_reg_names[i]);
if (IS_ERR(reg)) {
ret = PTR_ERR(reg);
dev_err(dev->dev, "failed to get hpd regulator: %s (%d)\n",
dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
config->hpd_reg_names[i], ret);
goto fail;
}
@ -143,7 +132,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
config->pwr_reg_names[i]);
if (IS_ERR(reg)) {
ret = PTR_ERR(reg);
dev_err(dev->dev, "failed to get pwr regulator: %s (%d)\n",
dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
config->pwr_reg_names[i], ret);
goto fail;
}
@ -158,7 +147,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n",
dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
config->hpd_clk_names[i], ret);
goto fail;
}
@ -173,7 +162,7 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n",
dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
config->pwr_clk_names[i], ret);
goto fail;
}
@ -184,11 +173,41 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
hdmi->i2c = hdmi_i2c_init(hdmi);
if (IS_ERR(hdmi->i2c)) {
ret = PTR_ERR(hdmi->i2c);
dev_err(dev->dev, "failed to get i2c: %d\n", ret);
dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
hdmi->i2c = NULL;
goto fail;
}
return hdmi;
fail:
if (hdmi)
hdmi_destroy(&hdmi->refcount);
return ERR_PTR(ret);
}
/* Second part of initialization, the drm/kms level modeset_init,
* constructs/initializes mode objects, etc, is called from master
* driver (not hdmi sub-device's probe/bind!)
*
* Any resource (regulator/clk/etc) which could be missing at boot
* should be handled in hdmi_init() so that failure happens from
* hdmi sub-device's probe.
*/
int hdmi_modeset_init(struct hdmi *hdmi,
struct drm_device *dev, struct drm_encoder *encoder)
{
struct msm_drm_private *priv = dev->dev_private;
struct platform_device *pdev = hdmi->pdev;
struct hdmi_platform_config *config = pdev->dev.platform_data;
int ret;
hdmi->dev = dev;
hdmi->encoder = encoder;
hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
hdmi->bridge = hdmi_bridge_init(hdmi);
if (IS_ERR(hdmi->bridge)) {
ret = PTR_ERR(hdmi->bridge);
@ -230,19 +249,20 @@ struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
platform_set_drvdata(pdev, hdmi);
return hdmi;
return 0;
fail:
if (hdmi) {
/* bridge/connector are normally destroyed by drm: */
if (hdmi->bridge)
hdmi->bridge->funcs->destroy(hdmi->bridge);
if (hdmi->connector)
hdmi->connector->funcs->destroy(hdmi->connector);
hdmi_destroy(&hdmi->refcount);
/* bridge/connector are normally destroyed by drm: */
if (hdmi->bridge) {
hdmi->bridge->funcs->destroy(hdmi->bridge);
hdmi->bridge = NULL;
}
if (hdmi->connector) {
hdmi->connector->funcs->destroy(hdmi->connector);
hdmi->connector = NULL;
}
return ERR_PTR(ret);
return ret;
}
/*
@ -251,11 +271,10 @@ fail:
#include <linux/of_gpio.h>
static void set_hdmi_pdev(struct drm_device *dev,
struct platform_device *pdev)
static void set_hdmi(struct drm_device *dev, struct hdmi *hdmi)
{
struct msm_drm_private *priv = dev->dev_private;
priv->hdmi_pdev = pdev;
priv->hdmi = hdmi;
}
#ifdef CONFIG_OF
@ -279,6 +298,7 @@ static int get_gpio(struct device *dev, struct device_node *of_node, const char
static int hdmi_bind(struct device *dev, struct device *master, void *data)
{
static struct hdmi_platform_config config = {};
struct hdmi *hdmi;
#ifdef CONFIG_OF
struct device_node *of_node = dev->of_node;
@ -369,14 +389,17 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
}
#endif
dev->platform_data = &config;
set_hdmi_pdev(dev_get_drvdata(master), to_platform_device(dev));
hdmi = hdmi_init(to_platform_device(dev));
if (IS_ERR(hdmi))
return PTR_ERR(hdmi);
set_hdmi(dev_get_drvdata(master), hdmi);
return 0;
}
static void hdmi_unbind(struct device *dev, struct device *master,
void *data)
{
set_hdmi_pdev(dev_get_drvdata(master), NULL);
set_hdmi(dev_get_drvdata(master), NULL);
}
static const struct component_ops hdmi_ops = {

2
drivers/gpu/drm/msm/hdmi/hdmi_phy_8960.c
View File

@ -510,7 +510,7 @@ struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi)
#ifdef CONFIG_COMMON_CLK
phy_8960->pll_hw.init = &pll_init;
phy_8960->pll = devm_clk_register(hdmi->dev->dev, &phy_8960->pll_hw);
phy_8960->pll = devm_clk_register(&hdmi->pdev->dev, &phy_8960->pll_hw);
if (IS_ERR(phy_8960->pll)) {
ret = PTR_ERR(phy_8960->pll);
phy_8960->pll = NULL;

13
drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
View File

@ -228,7 +228,6 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
struct drm_encoder *encoder;
struct drm_connector *connector;
struct drm_panel *panel;
struct hdmi *hdmi;
int ret;
/* construct non-private planes: */
@ -326,11 +325,13 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
priv->crtcs[priv->num_crtcs++] = crtc;
priv->encoders[priv->num_encoders++] = encoder;
hdmi = hdmi_init(dev, encoder);
if (IS_ERR(hdmi)) {
ret = PTR_ERR(hdmi);
dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
goto fail;
if (priv->hdmi) {
/* Construct bridge/connector for HDMI: */
ret = hdmi_modeset_init(priv->hdmi, dev, encoder);
if (ret) {
dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
goto fail;
}
}
return 0;

3
drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c
View File

@ -82,6 +82,7 @@ irqreturn_t mdp5_irq(struct msm_kms *kms)
{
struct mdp_kms *mdp_kms = to_mdp_kms(kms);
struct mdp5_kms *mdp5_kms = to_mdp5_kms(mdp_kms);
struct msm_drm_private *priv = mdp5_kms->dev->dev_private;
uint32_t intr;
intr = mdp5_read(mdp5_kms, REG_MDP5_HW_INTR_STATUS);
@ -92,7 +93,7 @@ irqreturn_t mdp5_irq(struct msm_kms *kms)
mdp5_irq_mdp(mdp_kms);
if (intr & MDP5_HW_INTR_STATUS_INTR_HDMI)
hdmi_irq(0, mdp5_kms->hdmi);
hdmi_irq(0, priv->hdmi);
return IRQ_HANDLED;
}

11
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
View File

@ -324,11 +324,12 @@ static int modeset_init(struct mdp5_kms *mdp5_kms)
priv->encoders[priv->num_encoders++] = encoder;
/* Construct bridge/connector for HDMI: */
mdp5_kms->hdmi = hdmi_init(dev, encoder);
if (IS_ERR(mdp5_kms->hdmi)) {
ret = PTR_ERR(mdp5_kms->hdmi);
dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
goto fail;
if (priv->hdmi) {
ret = hdmi_modeset_init(priv->hdmi, dev, encoder);
if (ret) {
dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
goto fail;
}
}
return 0;

2
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
View File

@ -71,8 +71,6 @@ struct mdp5_kms {
struct clk *lut_clk;
struct clk *vsync_clk;
struct hdmi *hdmi;
struct mdp_irq error_handler;
};
#define to_mdp5_kms(x) container_of(x, struct mdp5_kms, base)

10
drivers/gpu/drm/msm/msm_drv.h
View File

@ -75,7 +75,12 @@ struct msm_drm_private {
struct msm_kms *kms;
/* subordinate devices, if present: */
struct platform_device *hdmi_pdev, *gpu_pdev;
struct platform_device *gpu_pdev;
/* possibly this should be in the kms component, but it is
* shared by both mdp4 and mdp5..
*/
struct hdmi *hdmi;
/* when we have more than one 'msm_gpu' these need to be an array: */
struct msm_gpu *gpu;
@ -202,7 +207,8 @@ struct drm_framebuffer *msm_framebuffer_create(struct drm_device *dev,
struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev);
struct hdmi;
struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder);
int hdmi_modeset_init(struct hdmi *hdmi, struct drm_device *dev,
struct drm_encoder *encoder);
irqreturn_t hdmi_irq(int irq, void *dev_id);
void __init hdmi_register(void);
void __exit hdmi_unregister(void);