[PATCH RFC 27/46] imx-drm: convert to componentised device support

Russell King
2014-01-02T21:28:03Z

Use the componentised device support for imx-drm. This requires all
the sub-components and the master device to register with the component
device support.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
arch/arm/boot/dts/imx51-babbage.dts | 10 ++-
arch/arm/boot/dts/imx53-m53evk.dts | 8 ++-
arch/arm/boot/dts/imx53-mba53.dts | 6 ++
arch/arm/boot/dts/imx53-qsb.dts | 8 ++-
arch/arm/boot/dts/imx6qdl-sabresd.dtsi | 6 ++
drivers/staging/imx-drm/imx-drm-core.c | 105 ++++++++++++++++++++++-----
drivers/staging/imx-drm/imx-ldb.c | 40 ++++++++---
drivers/staging/imx-drm/imx-tve.c | 63 +++++++++++------
drivers/staging/imx-drm/ipuv3-crtc.c | 46 +++++++++----
drivers/staging/imx-drm/parallel-display.c | 30 ++++++--
10 files changed, 242 insertions(+), 80 deletions(-)

diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts
index be1407cf5abd..6ff15a0eacb3 100644
--- a/arch/arm/boot/dts/imx51-babbage.dts
+++ b/arch/arm/boot/dts/imx51-babbage.dts
@@ -21,7 +21,7 @@
reg = <0x90000000 0x20000000>;
};

- display at di0 {
+ display0: display at di0 {
compatible = "fsl,imx-parallel-display";
crtcs = <&ipu 0>;
interface-pix-fmt = "rgb24";
@@ -43,7 +43,7 @@
};
};

- display at di1 {
+ display1: display at di1 {
compatible = "fsl,imx-parallel-display";
crtcs = <&ipu 1>;
interface-pix-fmt = "rgb565";
@@ -81,6 +81,12 @@
};
};

+ imx-drm {
+ compatible = "fsl,imx-drm";
+ crtcs = <&ipu 0>, <&ipu 1>;
+ connectors = <&display0>, <&display1>;
+ };
+
sound {
compatible = "fsl,imx51-babbage-sgtl5000",
"fsl,imx-audio-sgtl5000";
diff --git a/arch/arm/boot/dts/imx53-m53evk.dts b/arch/arm/boot/dts/imx53-m53evk.dts
index 7d304d02ed38..ee6107b6484c 100644
--- a/arch/arm/boot/dts/imx53-m53evk.dts
+++ b/arch/arm/boot/dts/imx53-m53evk.dts
@@ -21,7 +21,7 @@
};

soc {
- display at di1 {
+ display1: display at di1 {
compatible = "fsl,imx-parallel-display";
crtcs = <&ipu 1>;
interface-pix-fmt = "bgr666";
@@ -53,6 +53,12 @@
default-brightness-level = <6>;
};

+ imx-drm {
+ compatible = "fsl,imx-drm";
+ crtcs = <&ipu 1>;
+ connectors = <&display1>;
+ };
+
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/imx53-mba53.dts b/arch/arm/boot/dts/imx53-mba53.dts
index a63090267941..9b6e76980a74 100644
--- a/arch/arm/boot/dts/imx53-mba53.dts
+++ b/arch/arm/boot/dts/imx53-mba53.dts
@@ -43,6 +43,12 @@
status = "disabled";
};

+ imx-drm {
+ compatible = "fsl,imx-drm";
+ crtcs = <&ipu 1>;
+ connectors = <&disp1>, <&tve>;
+ };
+
reg_3p2v: 3p2v {
compatible = "regulator-fixed";
regulator-name = "3P2V";
diff --git a/arch/arm/boot/dts/imx53-qsb.dts b/arch/arm/boot/dts/imx53-qsb.dts
index 91a5935a4aac..3cb4f7791a91 100644
--- a/arch/arm/boot/dts/imx53-qsb.dts
+++ b/arch/arm/boot/dts/imx53-qsb.dts
@@ -21,7 +21,7 @@
reg = <0x70000000 0x40000000>;
};

- display at di0 {
+ display0: display at di0 {
compatible = "fsl,imx-parallel-display";
crtcs = <&ipu 0>;
interface-pix-fmt = "rgb565";
@@ -72,6 +72,12 @@
};
};

+ imx-drm {
+ compatible = "fsl,imx-drm";
+ crtcs = <&ipu 0>;
+ connectors = <&display0>;
+ };
+
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
index e75e11b36dff..0e005f21d241 100644
--- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
@@ -62,6 +62,12 @@
};
};

+ imx-drm {
+ compatible = "fsl,imx-drm";
+ crtcs = <&ipu1 0>, <&ipu1 1>;
+ connectors = <&ldb>;
+ };
+
sound {
compatible = "fsl,imx6q-sabresd-wm8962",
"fsl,imx-audio-wm8962";
diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 839dbb7c7b36..8ece15944569 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -13,7 +13,7 @@
* GNU General Public License for more details.
*
*/
-
+#include <linux/component.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
@@ -90,6 +90,8 @@ static int imx_drm_driver_unload(struct drm_device *drm)
{
struct imx_drm_device *imxdrm = drm->dev_private;

+ component_unbind_all(drm->dev, drm);
+
imx_drm_device_put();

drm_vblank_cleanup(drm);
@@ -371,11 +373,8 @@ static void imx_drm_connector_unregister(
}

/*
- * Called by the CRTC driver when all CRTCs are registered. This
- * puts all the pieces together and initializes the driver.
- * Once this is called no more CRTCs can be registered since
- * the drm core has hardcoded the number of crtcs in several
- * places.
+ * Main DRM initialisation. This binds, initialises and registers
+ * with DRM the subcomponents of the driver.
*/
static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
{
@@ -427,8 +426,15 @@ static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
}

mutex_unlock(&imxdrm->mutex);
+
+ /* Now try and bind all our sub-components */
+ ret = component_bind_all(drm->dev, drm);
+ if (ret)
+ goto err_relock;
return 0;

+err_relock:
+ mutex_lock(&imxdrm->mutex);
err_vblank:
drm_vblank_cleanup(drm);
err_kms:
@@ -808,6 +814,70 @@ static struct drm_driver imx_drm_driver = {
.patchlevel = 0,
};

+static int compare_parent_of(struct device *dev, void *data)
+{
+ struct of_phandle_args *args = data;
+ return dev->parent && dev->parent->of_node == args->np;
+}
+
+static int compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+static int imx_drm_add_components(struct device *master, struct master *m)
+{
+ struct device_node *np = master->of_node;
+ unsigned i;
+ int ret;
+
+ for (i = 0; ; i++) {
+ struct of_phandle_args args;
+
+ ret = of_parse_phandle_with_fixed_args(np, "crtcs", 1,
+ i, &args);
+ if (ret)
+ break;
+
+ ret = component_master_add_child(m, compare_parent_of, &args);
+ of_node_put(args.np);
+
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; ; i++) {
+ struct device_node *node;
+
+ node = of_parse_phandle(np, "connectors", i);
+ if (!node)
+ break;
+
+ ret = component_master_add_child(m, compare_of, node);
+ of_node_put(node);
+
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+static int imx_drm_bind(struct device *dev)
+{
+ return drm_platform_init(&imx_drm_driver, to_platform_device(dev));
+}
+
+static void imx_drm_unbind(struct device *dev)
+{
+ drm_platform_exit(&imx_drm_driver, to_platform_device(dev));
+}
+
+static const struct component_master_ops imx_drm_ops = {
+ .add_components = imx_drm_add_components,
+ .bind = imx_drm_bind,
+ .unbind = imx_drm_unbind,
+};
+
static int imx_drm_platform_probe(struct platform_device *pdev)
{
int ret;
@@ -818,27 +888,31 @@ static int imx_drm_platform_probe(struct platform_device *pdev)

imx_drm_device->dev = &pdev->dev;

- return drm_platform_init(&imx_drm_driver, pdev);
+ return component_master_add(&pdev->dev, &imx_drm_ops);
}

static int imx_drm_platform_remove(struct platform_device *pdev)
{
- drm_platform_exit(&imx_drm_driver, pdev);
-
+ component_master_del(&pdev->dev, &imx_drm_ops);
return 0;
}

+static const struct of_device_id imx_drm_dt_ids[] = {
+ { .compatible = "fsl,imx-drm", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, imx_drm_dt_ids);
+
static struct platform_driver imx_drm_pdrv = {
.probe = imx_drm_platform_probe,
.remove = imx_drm_platform_remove,
.driver = {
.owner = THIS_MODULE,
.name = "imx-drm",
+ .of_match_table = imx_drm_dt_ids,
},
};

-static struct platform_device *imx_drm_pdev;
-
static int __init imx_drm_init(void)
{
int ret;
@@ -851,12 +925,6 @@ static int __init imx_drm_init(void)
INIT_LIST_HEAD(&imx_drm_device->connector_list);
INIT_LIST_HEAD(&imx_drm_device->encoder_list);

- imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0);
- if (IS_ERR(imx_drm_pdev)) {
- ret = PTR_ERR(imx_drm_pdev);
- goto err_pdev;
- }
-
ret = platform_driver_register(&imx_drm_pdrv);
if (ret)
goto err_pdrv;
@@ -864,8 +932,6 @@ static int __init imx_drm_init(void)
return 0;

err_pdrv:
- platform_device_unregister(imx_drm_pdev);
-err_pdev:
kfree(imx_drm_device);

return ret;
@@ -873,7 +939,6 @@ static int __init imx_drm_init(void)

static void __exit imx_drm_exit(void)
{
- platform_device_unregister(imx_drm_pdev);
platform_driver_unregister(&imx_drm_pdrv);

kfree(imx_drm_device);
diff --git a/drivers/staging/imx-drm/imx-ldb.c b/drivers/staging/imx-drm/imx-ldb.c
index 70455c4d7e48..5b71f49faa0a 100644
--- a/drivers/staging/imx-drm/imx-ldb.c
+++ b/drivers/staging/imx-drm/imx-ldb.c
@@ -20,6 +20,7 @@

#include <linux/module.h>
#include <linux/clk.h>
+#include <linux/component.h>
#include <drm/drmP.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
@@ -451,11 +452,11 @@ static const struct of_device_id imx_ldb_dt_ids[] = {
};
MODULE_DEVICE_TABLE(of, imx_ldb_dt_ids);

-static int imx_ldb_probe(struct platform_device *pdev)
+static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
{
- struct device_node *np = pdev->dev.of_node;
+ struct device_node *np = dev->of_node;
const struct of_device_id *of_id =
- of_match_device(imx_ldb_dt_ids, &pdev->dev);
+ of_match_device(imx_ldb_dt_ids, dev);
struct device_node *child;
const u8 *edidp;
struct imx_ldb *imx_ldb;
@@ -465,17 +466,17 @@ static int imx_ldb_probe(struct platform_device *pdev)
int ret;
int i;

- imx_ldb = devm_kzalloc(&pdev->dev, sizeof(*imx_ldb), GFP_KERNEL);
+ imx_ldb = devm_kzalloc(dev, sizeof(*imx_ldb), GFP_KERNEL);
if (!imx_ldb)
return -ENOMEM;

imx_ldb->regmap = syscon_regmap_lookup_by_phandle(np, "gpr");
if (IS_ERR(imx_ldb->regmap)) {
- dev_err(&pdev->dev, "failed to get parent regmap\n");
+ dev_err(dev, "failed to get parent regmap\n");
return PTR_ERR(imx_ldb->regmap);
}

- imx_ldb->dev = &pdev->dev;
+ imx_ldb->dev = dev;

if (of_id)
imx_ldb->lvds_mux = of_id->data;
@@ -513,7 +514,7 @@ static int imx_ldb_probe(struct platform_device *pdev)
return -EINVAL;

if (dual && i > 0) {
- dev_warn(&pdev->dev, "dual-channel mode, ignoring second output\n");
+ dev_warn(dev, "dual-channel mode, ignoring second output\n");
continue;
}

@@ -552,7 +553,7 @@ static int imx_ldb_probe(struct platform_device *pdev)
break;
case LVDS_BIT_MAP_JEIDA:
if (datawidth == 18) {
- dev_err(&pdev->dev, "JEIDA standard only supported in 24 bit\n");
+ dev_err(dev, "JEIDA standard only supported in 24 bit\n");
return -EINVAL;
}
if (i == 0 || dual)
@@ -561,7 +562,7 @@ static int imx_ldb_probe(struct platform_device *pdev)
imx_ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 | LDB_BIT_MAP_CH1_JEIDA;
break;
default:
- dev_err(&pdev->dev, "data mapping not specified or invalid\n");
+ dev_err(dev, "data mapping not specified or invalid\n");
return -EINVAL;
}

@@ -572,14 +573,15 @@ static int imx_ldb_probe(struct platform_device *pdev)
imx_drm_encoder_add_possible_crtcs(channel->imx_drm_encoder, child);
}

- platform_set_drvdata(pdev, imx_ldb);
+ dev_set_drvdata(dev, imx_ldb);

return 0;
}

-static int imx_ldb_remove(struct platform_device *pdev)
+static void imx_ldb_unbind(struct device *dev, struct device *master,
+ void *data)
{
- struct imx_ldb *imx_ldb = platform_get_drvdata(pdev);
+ struct imx_ldb *imx_ldb = dev_get_drvdata(dev);
int i;

for (i = 0; i < 2; i++) {
@@ -592,7 +594,21 @@ static int imx_ldb_remove(struct platform_device *pdev)
imx_drm_remove_connector(channel->imx_drm_connector);
imx_drm_remove_encoder(channel->imx_drm_encoder);
}
+}

+static const struct component_ops imx_ldb_ops = {
+ .bind = imx_ldb_bind,
+ .unbind = imx_ldb_unbind,
+};
+
+static int imx_ldb_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &imx_ldb_ops);
+}
+
+static int imx_ldb_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &imx_ldb_ops);
return 0;
}

diff --git a/drivers/staging/imx-drm/imx-tve.c b/drivers/staging/imx-drm/imx-tve.c
index b2f214971501..f8720f1ef86e 100644
--- a/drivers/staging/imx-drm/imx-tve.c
+++ b/drivers/staging/imx-drm/imx-tve.c
@@ -20,6 +20,7 @@

#include <linux/clk.h>
#include <linux/clk-provider.h>
+#include <linux/component.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
@@ -583,9 +584,10 @@ const int of_get_tve_mode(struct device_node *np)
return -EINVAL;
}

-static int imx_tve_probe(struct platform_device *pdev)
+static int imx_tve_bind(struct device *dev, struct device *master, void *data)
{
- struct device_node *np = pdev->dev.of_node;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct device_node *np = dev->of_node;
struct device_node *ddc_node;
struct imx_tve *tve;
struct resource *res;
@@ -594,11 +596,11 @@ static int imx_tve_probe(struct platform_device *pdev)
int irq;
int ret;

- tve = devm_kzalloc(&pdev->dev, sizeof(*tve), GFP_KERNEL);
+ tve = devm_kzalloc(dev, sizeof(*tve), GFP_KERNEL);
if (!tve)
return -ENOMEM;

- tve->dev = &pdev->dev;
+ tve->dev = dev;
spin_lock_init(&tve->lock);

ddc_node = of_parse_phandle(np, "ddc", 0);
@@ -609,7 +611,7 @@ static int imx_tve_probe(struct platform_device *pdev)

tve->mode = of_get_tve_mode(np);
if (tve->mode != TVE_MODE_VGA) {
- dev_err(&pdev->dev, "only VGA mode supported, currently\n");
+ dev_err(dev, "only VGA mode supported, currently\n");
return -EINVAL;
}

@@ -618,7 +620,7 @@ static int imx_tve_probe(struct platform_device *pdev)
&tve->hsync_pin);

if (ret < 0) {
- dev_err(&pdev->dev, "failed to get vsync pin\n");
+ dev_err(dev, "failed to get vsync pin\n");
return ret;
}

@@ -626,40 +628,40 @@ static int imx_tve_probe(struct platform_device *pdev)
&tve->vsync_pin);

if (ret < 0) {
- dev_err(&pdev->dev, "failed to get vsync pin\n");
+ dev_err(dev, "failed to get vsync pin\n");
return ret;
}
}

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&pdev->dev, res);
+ base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);

tve_regmap_config.lock_arg = tve;
- tve->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "tve", base,
+ tve->regmap = devm_regmap_init_mmio_clk(dev, "tve", base,
&tve_regmap_config);
if (IS_ERR(tve->regmap)) {
- dev_err(&pdev->dev, "failed to init regmap: %ld\n",
+ dev_err(dev, "failed to init regmap: %ld\n",
PTR_ERR(tve->regmap));
return PTR_ERR(tve->regmap);
}

irq = platform_get_irq(pdev, 0);
if (irq < 0) {
- dev_err(&pdev->dev, "failed to get irq\n");
+ dev_err(dev, "failed to get irq\n");
return irq;
}

- ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ ret = devm_request_threaded_irq(dev, irq, NULL,
imx_tve_irq_handler, IRQF_ONESHOT,
"imx-tve", tve);
if (ret < 0) {
- dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
+ dev_err(dev, "failed to request irq: %d\n", ret);
return ret;
}

- tve->dac_reg = devm_regulator_get(&pdev->dev, "dac");
+ tve->dac_reg = devm_regulator_get(dev, "dac");
if (!IS_ERR(tve->dac_reg)) {
regulator_set_voltage(tve->dac_reg, 2750000, 2750000);
ret = regulator_enable(tve->dac_reg);
@@ -667,17 +669,17 @@ static int imx_tve_probe(struct platform_device *pdev)
return ret;
}

- tve->clk = devm_clk_get(&pdev->dev, "tve");
+ tve->clk = devm_clk_get(dev, "tve");
if (IS_ERR(tve->clk)) {
- dev_err(&pdev->dev, "failed to get high speed tve clock: %ld\n",
+ dev_err(dev, "failed to get high speed tve clock: %ld\n",
PTR_ERR(tve->clk));
return PTR_ERR(tve->clk);
}

/* this is the IPU DI clock input selector, can be parented to tve_di */
- tve->di_sel_clk = devm_clk_get(&pdev->dev, "di_sel");
+ tve->di_sel_clk = devm_clk_get(dev, "di_sel");
if (IS_ERR(tve->di_sel_clk)) {
- dev_err(&pdev->dev, "failed to get ipu di mux clock: %ld\n",
+ dev_err(dev, "failed to get ipu di mux clock: %ld\n",
PTR_ERR(tve->di_sel_clk));
return PTR_ERR(tve->di_sel_clk);
}
@@ -688,11 +690,11 @@ static int imx_tve_probe(struct platform_device *pdev)

ret = regmap_read(tve->regmap, TVE_COM_CONF_REG, &val);
if (ret < 0) {
- dev_err(&pdev->dev, "failed to read configuration register: %d\n", ret);
+ dev_err(dev, "failed to read configuration register: %d\n", ret);
return ret;
}
if (val != 0x00100000) {
- dev_err(&pdev->dev, "configuration register default value indicates this is not a TVEv2\n");
+ dev_err(dev, "configuration register default value indicates this is not a TVEv2\n");
return -ENODEV;
}

@@ -705,14 +707,15 @@ static int imx_tve_probe(struct platform_device *pdev)

ret = imx_drm_encoder_add_possible_crtcs(tve->imx_drm_encoder, np);

- platform_set_drvdata(pdev, tve);
+ dev_set_drvdata(dev, tve);

return 0;
}

-static int imx_tve_remove(struct platform_device *pdev)
+static void imx_tve_unbind(struct device *dev, struct device *master,
+ void *data)
{
- struct imx_tve *tve = platform_get_drvdata(pdev);
+ struct imx_tve *tve = dev_get_drvdata(dev);
struct drm_connector *connector = &tve->connector;
struct drm_encoder *encoder = &tve->encoder;

@@ -723,7 +726,21 @@ static int imx_tve_remove(struct platform_device *pdev)

if (!IS_ERR(tve->dac_reg))
regulator_disable(tve->dac_reg);
+}

+static const struct component_ops imx_tve_ops = {
+ .bind = imx_tve_bind,
+ .unbind = imx_tve_unbind,
+};
+
+static int imx_tve_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &imx_tve_ops);
+}
+
+static int imx_tve_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &imx_tve_ops);
return 0;
}

diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c b/drivers/staging/imx-drm/ipuv3-crtc.c
index 2bee6fa585f8..eb9653a5a887 100644
--- a/drivers/staging/imx-drm/ipuv3-crtc.c
+++ b/drivers/staging/imx-drm/ipuv3-crtc.c
@@ -17,6 +17,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
+#include <linux/component.h>
#include <linux/module.h>
#include <linux/export.h>
#include <linux/device.h>
@@ -399,43 +400,60 @@ static int ipu_crtc_init(struct ipu_crtc *ipu_crtc,
return ret;
}

-static int ipu_drm_probe(struct platform_device *pdev)
+static int ipu_drm_bind(struct device *dev, struct device *master, void *data)
{
- struct ipu_client_platformdata *pdata = pdev->dev.platform_data;
+ struct ipu_client_platformdata *pdata = dev->platform_data;
struct ipu_crtc *ipu_crtc;
int ret;

- if (!pdata)
- return -EINVAL;
-
- ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- ipu_crtc = devm_kzalloc(&pdev->dev, sizeof(*ipu_crtc), GFP_KERNEL);
+ ipu_crtc = devm_kzalloc(dev, sizeof(*ipu_crtc), GFP_KERNEL);
if (!ipu_crtc)
return -ENOMEM;

- ipu_crtc->dev = &pdev->dev;
+ ipu_crtc->dev = dev;

ret = ipu_crtc_init(ipu_crtc, pdata);
if (ret)
return ret;

- platform_set_drvdata(pdev, ipu_crtc);
+ dev_set_drvdata(dev, ipu_crtc);

return 0;
}

-static int ipu_drm_remove(struct platform_device *pdev)
+static void ipu_drm_unbind(struct device *dev, struct device *master,
+ void *data)
{
- struct ipu_crtc *ipu_crtc = platform_get_drvdata(pdev);
+ struct ipu_crtc *ipu_crtc = dev_get_drvdata(dev);

imx_drm_remove_crtc(ipu_crtc->imx_crtc);

ipu_plane_put_resources(ipu_crtc->plane[0]);
ipu_put_resources(ipu_crtc);
+}
+
+static const struct component_ops ipu_crtc_ops = {
+ .bind = ipu_drm_bind,
+ .unbind = ipu_drm_unbind,
+};

+static int ipu_drm_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ if (!pdev->dev.platform_data)
+ return -EINVAL;
+
+ ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
+
+ return component_add(&pdev->dev, &ipu_crtc_ops);
+}
+
+static int ipu_drm_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &ipu_crtc_ops);
return 0;
}

diff --git a/drivers/staging/imx-drm/parallel-display.c b/drivers/staging/imx-drm/parallel-display.c
index 9ba9ca1aeb67..110c0021a797 100644
--- a/drivers/staging/imx-drm/parallel-display.c
+++ b/drivers/staging/imx-drm/parallel-display.c
@@ -18,6 +18,7 @@
* MA 02110-1301, USA.
*/

+#include <linux/component.h>
#include <linux/module.h>
#include <drm/drmP.h>
#include <drm/drm_fb_helper.h>
@@ -191,15 +192,15 @@ static int imx_pd_register(struct imx_parallel_display *imxpd)
return 0;
}

-static int imx_pd_probe(struct platform_device *pdev)
+static int imx_pd_bind(struct device *dev, struct device *master, void *data)
{
- struct device_node *np = pdev->dev.of_node;
+ struct device_node *np = dev->of_node;
const u8 *edidp;
struct imx_parallel_display *imxpd;
int ret;
const char *fmt;

- imxpd = devm_kzalloc(&pdev->dev, sizeof(*imxpd), GFP_KERNEL);
+ imxpd = devm_kzalloc(dev, sizeof(*imxpd), GFP_KERNEL);
if (!imxpd)
return -ENOMEM;

@@ -217,7 +218,7 @@ static int imx_pd_probe(struct platform_device *pdev)
imxpd->interface_pix_fmt = V4L2_PIX_FMT_BGR666;
}

- imxpd->dev = &pdev->dev;
+ imxpd->dev = dev;

ret = imx_pd_register(imxpd);
if (ret)
@@ -225,14 +226,15 @@ static int imx_pd_probe(struct platform_device *pdev)

ret = imx_drm_encoder_add_possible_crtcs(imxpd->imx_drm_encoder, np);

- platform_set_drvdata(pdev, imxpd);
+ dev_set_drvdata(dev, imxpd);

return 0;
}

-static int imx_pd_remove(struct platform_device *pdev)
+static void imx_pd_unbind(struct device *dev, struct device *master,
+ void *data)
{
- struct imx_parallel_display *imxpd = platform_get_drvdata(pdev);
+ struct imx_parallel_display *imxpd = dev_get_drvdata(dev);
struct drm_connector *connector = &imxpd->connector;
struct drm_encoder *encoder = &imxpd->encoder;

@@ -240,7 +242,21 @@ static int imx_pd_remove(struct platform_device *pdev)

imx_drm_remove_connector(imxpd->imx_drm_connector);
imx_drm_remove_encoder(imxpd->imx_drm_encoder);
+}

+static const struct component_ops imx_pd_ops = {
+ .bind = imx_pd_bind,
+ .unbind = imx_pd_unbind,
+};
+
+static int imx_pd_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &imx_pd_ops);
+}
+
+static int imx_pd_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &imx_pd_ops);
return 0;
}

--
1.7.4.4