From: Jingoo Han <jg1.han@samsung.com>
To: 'Florian Tobias Schandinat' <FlorianSchandinat@gmx.de>
Cc: linux-fbdev@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
devicetree-discuss@lists.ozlabs.org,
'Ajay Kumar' <ajaykumar.rs@samsung.com>,
'Sylwester Nawrocki' <sylvester.nawrocki@gmail.com>,
'Tomasz Figa' <t.figa@samsung.com>,
'Thomas Abraham' <thomas.abraham@linaro.org>,
'Jingoo Han' <jg1.han@samsung.com>
Subject: [PATCH V7 1/2] video: exynos_dp: Add device tree support to DP driver
Date: Mon, 15 Oct 2012 09:56:39 +0000 [thread overview]
Message-ID: <00a201cdaabb$5f6eb6f0$1e4c24d0$%han@samsung.com> (raw)
From: Ajay Kumar <ajaykumar.rs@samsung.com>
This patch enables device tree based discovery support for DP driver.
The driver is modified to handle platform data in both the cases:
with DT and non-DT.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
This patch is tested with Exynos5250.
Changes since v6:
- Fix return check for exynos_dp_dt_parse_phydata() in exynos_dp_probe()
drivers/video/exynos/exynos_dp_core.c | 206 ++++++++++++++++++++++++++++++---
drivers/video/exynos/exynos_dp_core.h | 2 +
2 files changed, 194 insertions(+), 14 deletions(-)
diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
index d55470e..0d9c0ee 100644
--- a/drivers/video/exynos/exynos_dp_core.c
+++ b/drivers/video/exynos/exynos_dp_core.c
@@ -18,6 +18,7 @@
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
+#include <linux/of.h>
#include <video/exynos_dp.h>
@@ -856,6 +857,145 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
return IRQ_HANDLED;
}
+#ifdef CONFIG_OF
+static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev)
+{
+ struct device_node *dp_node = dev->of_node;
+ struct exynos_dp_platdata *pd;
+ struct video_info *dp_video_config;
+
+ pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd) {
+ dev_err(dev, "memory allocation for pdata failed\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ dp_video_config = devm_kzalloc(dev,
+ sizeof(*dp_video_config), GFP_KERNEL);
+
+ if (!dp_video_config) {
+ dev_err(dev, "memory allocation for video config failed\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ pd->video_info = dp_video_config;
+
+ dp_video_config->h_sync_polarity + of_property_read_bool(dp_node, "hsync-active-high");
+
+ dp_video_config->v_sync_polarity + of_property_read_bool(dp_node, "vsync-active-high");
+
+ dp_video_config->interlaced + of_property_read_bool(dp_node, "interlaced");
+
+ if (of_property_read_u32(dp_node, "samsung,color-space",
+ &dp_video_config->color_space)) {
+ dev_err(dev, "failed to get color-space\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,dynamic-range",
+ &dp_video_config->dynamic_range)) {
+ dev_err(dev, "failed to get dynamic-range\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
+ &dp_video_config->ycbcr_coeff)) {
+ dev_err(dev, "failed to get ycbcr-coeff\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,color-depth",
+ &dp_video_config->color_depth)) {
+ dev_err(dev, "failed to get color-depth\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,link-rate",
+ &dp_video_config->link_rate)) {
+ dev_err(dev, "failed to get link-rate\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,lane-count",
+ &dp_video_config->lane_count)) {
+ dev_err(dev, "failed to get lane-count\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ return pd;
+}
+
+static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
+{
+ struct device_node *dp_phy_node;
+ u32 phy_base;
+
+ dp_phy_node = of_find_node_by_name(dp->dev->of_node, "dptx-phy");
+ if (!dp_phy_node) {
+ dev_err(dp->dev, "could not find dptx-phy node\n");
+ return -ENODEV;
+ }
+
+ if (of_property_read_u32(dp_phy_node, "reg", &phy_base)) {
+ dev_err(dp->dev, "faild to get reg for dptx-phy\n");
+ return -EINVAL;
+ }
+
+ if (of_property_read_u32(dp_phy_node, "samsung,enable-mask",
+ &dp->enable_mask)) {
+ dev_err(dp->dev, "faild to get enable-mask for dptx-phy\n");
+ return -EINVAL;
+ }
+
+ dp->phy_addr = ioremap(phy_base, SZ_4);
+ if (!dp->phy_addr) {
+ dev_err(dp->dev, "failed to ioremap dp-phy\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void exynos_dp_phy_init(struct exynos_dp_device *dp)
+{
+ u32 reg;
+
+ reg = __raw_readl(dp->phy_addr);
+ reg |= dp->enable_mask;
+ __raw_writel(reg, dp->phy_addr);
+}
+
+static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
+{
+ u32 reg;
+
+ reg = __raw_readl(dp->phy_addr);
+ reg &= ~(dp->enable_mask);
+ __raw_writel(reg, dp->phy_addr);
+}
+#else
+static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev)
+{
+ return NULL;
+}
+
+static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
+{
+ return -EINVAL;
+}
+
+static void exynos_dp_phy_init(struct exynos_dp_device *dp)
+{
+ return;
+}
+
+static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
+{
+ return;
+}
+#endif /* CONFIG_OF */
+
static int __devinit exynos_dp_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -864,12 +1004,6 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
int ret = 0;
- pdata = pdev->dev.platform_data;
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data\n");
- return -EINVAL;
- }
-
dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
GFP_KERNEL);
if (!dp) {
@@ -879,6 +1013,22 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
dp->dev = &pdev->dev;
+ if (pdev->dev.of_node) {
+ pdata = exynos_dp_dt_parse_pdata(&pdev->dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+
+ ret = exynos_dp_dt_parse_phydata(dp);
+ if (ret)
+ return ret;
+ } else {
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data\n");
+ return -EINVAL;
+ }
+ }
+
dp->clock = devm_clk_get(&pdev->dev, "dp");
if (IS_ERR(dp->clock)) {
dev_err(&pdev->dev, "failed to get clock\n");
@@ -909,8 +1059,14 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
}
dp->video_info = pdata->video_info;
- if (pdata->phy_init)
- pdata->phy_init();
+
+ if (pdev->dev.of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_init(dp);
+ } else {
+ if (pdata->phy_init)
+ pdata->phy_init();
+ }
exynos_dp_init_dp(dp);
@@ -953,8 +1109,13 @@ static int __devexit exynos_dp_remove(struct platform_device *pdev)
struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
- if (pdata && pdata->phy_exit)
- pdata->phy_exit();
+ if (pdev->dev.of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_exit(dp);
+ } else {
+ if (pdata->phy_exit)
+ pdata->phy_exit();
+ }
clk_disable_unprepare(dp->clock);
@@ -968,8 +1129,13 @@ static int exynos_dp_suspend(struct device *dev)
struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
- if (pdata && pdata->phy_exit)
- pdata->phy_exit();
+ if (dev->of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_exit(dp);
+ } else {
+ if (pdata->phy_exit)
+ pdata->phy_exit();
+ }
clk_disable_unprepare(dp->clock);
@@ -982,8 +1148,13 @@ static int exynos_dp_resume(struct device *dev)
struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
- if (pdata && pdata->phy_init)
- pdata->phy_init();
+ if (dev->of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_init(dp);
+ } else {
+ if (pdata->phy_init)
+ pdata->phy_init();
+ }
clk_prepare_enable(dp->clock);
@@ -1013,6 +1184,12 @@ static const struct dev_pm_ops exynos_dp_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume)
};
+static const struct of_device_id exynos_dp_match[] = {
+ { .compatible = "samsung,exynos5-dp" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_dp_match);
+
static struct platform_driver exynos_dp_driver = {
.probe = exynos_dp_probe,
.remove = __devexit_p(exynos_dp_remove),
@@ -1020,6 +1197,7 @@ static struct platform_driver exynos_dp_driver = {
.name = "exynos-dp",
.owner = THIS_MODULE,
.pm = &exynos_dp_pm_ops,
+ .of_match_table = of_match_ptr(exynos_dp_match),
},
};
diff --git a/drivers/video/exynos/exynos_dp_core.h b/drivers/video/exynos/exynos_dp_core.h
index 57b8a65..6dbeeb2 100644
--- a/drivers/video/exynos/exynos_dp_core.h
+++ b/drivers/video/exynos/exynos_dp_core.h
@@ -29,6 +29,8 @@ struct exynos_dp_device {
struct clk *clock;
unsigned int irq;
void __iomem *reg_base;
+ void __iomem *phy_addr;
+ unsigned int enable_mask;
struct video_info *video_info;
struct link_train link_train;
--
1.7.1
WARNING: multiple messages have this Message-ID (diff)
From: Jingoo Han <jg1.han@samsung.com>
To: 'Florian Tobias Schandinat' <FlorianSchandinat@gmx.de>
Cc: linux-fbdev@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
devicetree-discuss@lists.ozlabs.org,
'Ajay Kumar' <ajaykumar.rs@samsung.com>,
'Sylwester Nawrocki' <sylvester.nawrocki@gmail.com>,
'Tomasz Figa' <t.figa@samsung.com>,
'Thomas Abraham' <thomas.abraham@linaro.org>,
'Jingoo Han' <jg1.han@samsung.com>
Subject: [PATCH V7 1/2] video: exynos_dp: Add device tree support to DP driver
Date: Mon, 15 Oct 2012 18:56:39 +0900 [thread overview]
Message-ID: <00a201cdaabb$5f6eb6f0$1e4c24d0$%han@samsung.com> (raw)
From: Ajay Kumar <ajaykumar.rs@samsung.com>
This patch enables device tree based discovery support for DP driver.
The driver is modified to handle platform data in both the cases:
with DT and non-DT.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
This patch is tested with Exynos5250.
Changes since v6:
- Fix return check for exynos_dp_dt_parse_phydata() in exynos_dp_probe()
drivers/video/exynos/exynos_dp_core.c | 206 ++++++++++++++++++++++++++++++---
drivers/video/exynos/exynos_dp_core.h | 2 +
2 files changed, 194 insertions(+), 14 deletions(-)
diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c
index d55470e..0d9c0ee 100644
--- a/drivers/video/exynos/exynos_dp_core.c
+++ b/drivers/video/exynos/exynos_dp_core.c
@@ -18,6 +18,7 @@
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
+#include <linux/of.h>
#include <video/exynos_dp.h>
@@ -856,6 +857,145 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
return IRQ_HANDLED;
}
+#ifdef CONFIG_OF
+static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev)
+{
+ struct device_node *dp_node = dev->of_node;
+ struct exynos_dp_platdata *pd;
+ struct video_info *dp_video_config;
+
+ pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd) {
+ dev_err(dev, "memory allocation for pdata failed\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ dp_video_config = devm_kzalloc(dev,
+ sizeof(*dp_video_config), GFP_KERNEL);
+
+ if (!dp_video_config) {
+ dev_err(dev, "memory allocation for video config failed\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ pd->video_info = dp_video_config;
+
+ dp_video_config->h_sync_polarity =
+ of_property_read_bool(dp_node, "hsync-active-high");
+
+ dp_video_config->v_sync_polarity =
+ of_property_read_bool(dp_node, "vsync-active-high");
+
+ dp_video_config->interlaced =
+ of_property_read_bool(dp_node, "interlaced");
+
+ if (of_property_read_u32(dp_node, "samsung,color-space",
+ &dp_video_config->color_space)) {
+ dev_err(dev, "failed to get color-space\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,dynamic-range",
+ &dp_video_config->dynamic_range)) {
+ dev_err(dev, "failed to get dynamic-range\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff",
+ &dp_video_config->ycbcr_coeff)) {
+ dev_err(dev, "failed to get ycbcr-coeff\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,color-depth",
+ &dp_video_config->color_depth)) {
+ dev_err(dev, "failed to get color-depth\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,link-rate",
+ &dp_video_config->link_rate)) {
+ dev_err(dev, "failed to get link-rate\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (of_property_read_u32(dp_node, "samsung,lane-count",
+ &dp_video_config->lane_count)) {
+ dev_err(dev, "failed to get lane-count\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ return pd;
+}
+
+static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
+{
+ struct device_node *dp_phy_node;
+ u32 phy_base;
+
+ dp_phy_node = of_find_node_by_name(dp->dev->of_node, "dptx-phy");
+ if (!dp_phy_node) {
+ dev_err(dp->dev, "could not find dptx-phy node\n");
+ return -ENODEV;
+ }
+
+ if (of_property_read_u32(dp_phy_node, "reg", &phy_base)) {
+ dev_err(dp->dev, "faild to get reg for dptx-phy\n");
+ return -EINVAL;
+ }
+
+ if (of_property_read_u32(dp_phy_node, "samsung,enable-mask",
+ &dp->enable_mask)) {
+ dev_err(dp->dev, "faild to get enable-mask for dptx-phy\n");
+ return -EINVAL;
+ }
+
+ dp->phy_addr = ioremap(phy_base, SZ_4);
+ if (!dp->phy_addr) {
+ dev_err(dp->dev, "failed to ioremap dp-phy\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void exynos_dp_phy_init(struct exynos_dp_device *dp)
+{
+ u32 reg;
+
+ reg = __raw_readl(dp->phy_addr);
+ reg |= dp->enable_mask;
+ __raw_writel(reg, dp->phy_addr);
+}
+
+static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
+{
+ u32 reg;
+
+ reg = __raw_readl(dp->phy_addr);
+ reg &= ~(dp->enable_mask);
+ __raw_writel(reg, dp->phy_addr);
+}
+#else
+static struct exynos_dp_platdata *exynos_dp_dt_parse_pdata(struct device *dev)
+{
+ return NULL;
+}
+
+static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
+{
+ return -EINVAL;
+}
+
+static void exynos_dp_phy_init(struct exynos_dp_device *dp)
+{
+ return;
+}
+
+static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
+{
+ return;
+}
+#endif /* CONFIG_OF */
+
static int __devinit exynos_dp_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -864,12 +1004,6 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
int ret = 0;
- pdata = pdev->dev.platform_data;
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data\n");
- return -EINVAL;
- }
-
dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
GFP_KERNEL);
if (!dp) {
@@ -879,6 +1013,22 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
dp->dev = &pdev->dev;
+ if (pdev->dev.of_node) {
+ pdata = exynos_dp_dt_parse_pdata(&pdev->dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+
+ ret = exynos_dp_dt_parse_phydata(dp);
+ if (ret)
+ return ret;
+ } else {
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data\n");
+ return -EINVAL;
+ }
+ }
+
dp->clock = devm_clk_get(&pdev->dev, "dp");
if (IS_ERR(dp->clock)) {
dev_err(&pdev->dev, "failed to get clock\n");
@@ -909,8 +1059,14 @@ static int __devinit exynos_dp_probe(struct platform_device *pdev)
}
dp->video_info = pdata->video_info;
- if (pdata->phy_init)
- pdata->phy_init();
+
+ if (pdev->dev.of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_init(dp);
+ } else {
+ if (pdata->phy_init)
+ pdata->phy_init();
+ }
exynos_dp_init_dp(dp);
@@ -953,8 +1109,13 @@ static int __devexit exynos_dp_remove(struct platform_device *pdev)
struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
- if (pdata && pdata->phy_exit)
- pdata->phy_exit();
+ if (pdev->dev.of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_exit(dp);
+ } else {
+ if (pdata->phy_exit)
+ pdata->phy_exit();
+ }
clk_disable_unprepare(dp->clock);
@@ -968,8 +1129,13 @@ static int exynos_dp_suspend(struct device *dev)
struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
- if (pdata && pdata->phy_exit)
- pdata->phy_exit();
+ if (dev->of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_exit(dp);
+ } else {
+ if (pdata->phy_exit)
+ pdata->phy_exit();
+ }
clk_disable_unprepare(dp->clock);
@@ -982,8 +1148,13 @@ static int exynos_dp_resume(struct device *dev)
struct exynos_dp_platdata *pdata = pdev->dev.platform_data;
struct exynos_dp_device *dp = platform_get_drvdata(pdev);
- if (pdata && pdata->phy_init)
- pdata->phy_init();
+ if (dev->of_node) {
+ if (dp->phy_addr)
+ exynos_dp_phy_init(dp);
+ } else {
+ if (pdata->phy_init)
+ pdata->phy_init();
+ }
clk_prepare_enable(dp->clock);
@@ -1013,6 +1184,12 @@ static const struct dev_pm_ops exynos_dp_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume)
};
+static const struct of_device_id exynos_dp_match[] = {
+ { .compatible = "samsung,exynos5-dp" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_dp_match);
+
static struct platform_driver exynos_dp_driver = {
.probe = exynos_dp_probe,
.remove = __devexit_p(exynos_dp_remove),
@@ -1020,6 +1197,7 @@ static struct platform_driver exynos_dp_driver = {
.name = "exynos-dp",
.owner = THIS_MODULE,
.pm = &exynos_dp_pm_ops,
+ .of_match_table = of_match_ptr(exynos_dp_match),
},
};
diff --git a/drivers/video/exynos/exynos_dp_core.h b/drivers/video/exynos/exynos_dp_core.h
index 57b8a65..6dbeeb2 100644
--- a/drivers/video/exynos/exynos_dp_core.h
+++ b/drivers/video/exynos/exynos_dp_core.h
@@ -29,6 +29,8 @@ struct exynos_dp_device {
struct clk *clock;
unsigned int irq;
void __iomem *reg_base;
+ void __iomem *phy_addr;
+ unsigned int enable_mask;
struct video_info *video_info;
struct link_train link_train;
--
1.7.1
next reply other threads:[~2012-10-15 9:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-15 9:56 Jingoo Han [this message]
2012-10-15 9:56 ` [PATCH V7 1/2] video: exynos_dp: Add device tree support to DP driver Jingoo Han
2012-10-15 9:57 ` [PATCH V7 2/2] video: exynos_dp: device tree documentation Jingoo Han
2012-10-15 9:57 ` Jingoo Han
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