[PATCH v4 03/45] media: sun6i-csi: Tidy up platform code

Paul Kocialkowski
2022-04-15T15:28:32Z

Various renames, variables lowering and other cosmetic changes in the
platform-support code. No functional change intended.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
---
.../platform/sunxi/sun6i-csi/sun6i_csi.c | 98 ++++++++++---------
.../platform/sunxi/sun6i-csi/sun6i_csi.h | 4 +-
2 files changed, 56 insertions(+), 46 deletions(-)

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
index 5fbaa1e99412..becd8d17f8eb 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -153,25 +153,25 @@ int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable)
if (!enable) {
regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, 0);

- clk_disable_unprepare(csi_dev->clk_ram);
+ clk_disable_unprepare(csi_dev->clock_ram);
if (of_device_is_compatible(dev->of_node,
"allwinner,sun50i-a64-csi"))
- clk_rate_exclusive_put(csi_dev->clk_mod);
- clk_disable_unprepare(csi_dev->clk_mod);
+ clk_rate_exclusive_put(csi_dev->clock_mod);
+ clk_disable_unprepare(csi_dev->clock_mod);
reset_control_assert(csi_dev->reset);
return 0;
}

- ret = clk_prepare_enable(csi_dev->clk_mod);
+ ret = clk_prepare_enable(csi_dev->clock_mod);
if (ret) {
dev_err(csi_dev->dev, "Enable csi clk err %d\n", ret);
return ret;
}

if (of_device_is_compatible(dev->of_node, "allwinner,sun50i-a64-csi"))
- clk_set_rate_exclusive(csi_dev->clk_mod, 300000000);
+ clk_set_rate_exclusive(csi_dev->clock_mod, 300000000);

- ret = clk_prepare_enable(csi_dev->clk_ram);
+ ret = clk_prepare_enable(csi_dev->clock_ram);
if (ret) {
dev_err(csi_dev->dev, "Enable clk_dram_csi clk err %d\n", ret);
goto clk_mod_disable;
@@ -188,11 +188,11 @@ int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable)
return 0;

clk_ram_disable:
- clk_disable_unprepare(csi_dev->clk_ram);
+ clk_disable_unprepare(csi_dev->clock_ram);
clk_mod_disable:
if (of_device_is_compatible(dev->of_node, "allwinner,sun50i-a64-csi"))
- clk_rate_exclusive_put(csi_dev->clk_mod);
- clk_disable_unprepare(csi_dev->clk_mod);
+ clk_rate_exclusive_put(csi_dev->clock_mod);
+ clk_disable_unprepare(csi_dev->clock_mod);
return ret;
}

@@ -776,12 +776,11 @@ static int sun6i_csi_v4l2_init(struct sun6i_csi_device *csi_dev)
return ret;
}

-/* -----------------------------------------------------------------------------
- * Resources and IRQ
- */
-static irqreturn_t sun6i_csi_isr(int irq, void *dev_id)
+/* Platform */
+
+static irqreturn_t sun6i_csi_interrupt(int irq, void *private)
{
- struct sun6i_csi_device *csi_dev = (struct sun6i_csi_device *)dev_id;
+ struct sun6i_csi_device *csi_dev = private;
struct regmap *regmap = csi_dev->regmap;
u32 status;

@@ -816,73 +815,82 @@ static const struct regmap_config sun6i_csi_regmap_config = {
.max_register = 0x9c,
};

-static int sun6i_csi_resource_request(struct sun6i_csi_device *csi_dev,
- struct platform_device *pdev)
+static int sun6i_csi_resources_setup(struct sun6i_csi_device *csi_dev,
+ struct platform_device *platform_dev)
{
+ struct device *dev = csi_dev->dev;
void __iomem *io_base;
int ret;
int irq;

- io_base = devm_platform_ioremap_resource(pdev, 0);
+ /* Registers */
+
+ io_base = devm_platform_ioremap_resource(platform_dev, 0);
if (IS_ERR(io_base))
return PTR_ERR(io_base);

- csi_dev->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "bus", io_base,
+ csi_dev->regmap = devm_regmap_init_mmio_clk(dev, "bus", io_base,
&sun6i_csi_regmap_config);
if (IS_ERR(csi_dev->regmap)) {
- dev_err(&pdev->dev, "Failed to init register map\n");
+ dev_err(dev, "failed to init register map\n");
return PTR_ERR(csi_dev->regmap);
}

- csi_dev->clk_mod = devm_clk_get(&pdev->dev, "mod");
- if (IS_ERR(csi_dev->clk_mod)) {
- dev_err(&pdev->dev, "Unable to acquire csi clock\n");
- return PTR_ERR(csi_dev->clk_mod);
+ /* Clocks */
+
+ csi_dev->clock_mod = devm_clk_get(dev, "mod");
+ if (IS_ERR(csi_dev->clock_mod)) {
+ dev_err(dev, "failed to acquire module clock\n");
+ return PTR_ERR(csi_dev->clock_mod);
}

- csi_dev->clk_ram = devm_clk_get(&pdev->dev, "ram");
- if (IS_ERR(csi_dev->clk_ram)) {
- dev_err(&pdev->dev, "Unable to acquire dram-csi clock\n");
- return PTR_ERR(csi_dev->clk_ram);
+ csi_dev->clock_ram = devm_clk_get(dev, "ram");
+ if (IS_ERR(csi_dev->clock_ram)) {
+ dev_err(dev, "failed to acquire ram clock\n");
+ return PTR_ERR(csi_dev->clock_ram);
}

- csi_dev->reset = devm_reset_control_get_shared(&pdev->dev, NULL);
+ /* Reset */
+
+ csi_dev->reset = devm_reset_control_get_shared(dev, NULL);
if (IS_ERR(csi_dev->reset)) {
- dev_err(&pdev->dev, "Cannot get reset controller\n");
+ dev_err(dev, "failed to acquire reset\n");
return PTR_ERR(csi_dev->reset);
}

- irq = platform_get_irq(pdev, 0);
+ /* Interrupt */
+
+ irq = platform_get_irq(platform_dev, 0);
if (irq < 0)
return -ENXIO;

- ret = devm_request_irq(&pdev->dev, irq, sun6i_csi_isr, 0,
- SUN6I_CSI_NAME, csi_dev);
+ ret = devm_request_irq(dev, irq, sun6i_csi_interrupt, 0, SUN6I_CSI_NAME,
+ csi_dev);
if (ret) {
- dev_err(&pdev->dev, "Cannot request csi IRQ\n");
+ dev_err(dev, "failed to request interrupt\n");
return ret;
}

return 0;
}

-static int sun6i_csi_probe(struct platform_device *pdev)
+static int sun6i_csi_probe(struct platform_device *platform_dev)
{
struct sun6i_csi_device *csi_dev;
+ struct device *dev = &platform_dev->dev;
int ret;

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

- csi_dev->dev = &pdev->dev;
+ csi_dev->dev = &platform_dev->dev;
+ platform_set_drvdata(platform_dev, csi_dev);

- ret = sun6i_csi_resource_request(csi_dev, pdev);
+ ret = sun6i_csi_resources_setup(csi_dev, platform_dev);
if (ret)
return ret;

- platform_set_drvdata(pdev, csi_dev);
-
return sun6i_csi_v4l2_init(csi_dev);
}

@@ -903,16 +911,18 @@ static const struct of_device_id sun6i_csi_of_match[] = {
{ .compatible = "allwinner,sun50i-a64-csi", },
{},
};
+
MODULE_DEVICE_TABLE(of, sun6i_csi_of_match);

static struct platform_driver sun6i_csi_platform_driver = {
- .probe = sun6i_csi_probe,
- .remove = sun6i_csi_remove,
- .driver = {
- .name = SUN6I_CSI_NAME,
- .of_match_table = of_match_ptr(sun6i_csi_of_match),
+ .probe = sun6i_csi_probe,
+ .remove = sun6i_csi_remove,
+ .driver = {
+ .name = SUN6I_CSI_NAME,
+ .of_match_table = of_match_ptr(sun6i_csi_of_match),
},
};
+
module_platform_driver(sun6i_csi_platform_driver);

MODULE_DESCRIPTION("Allwinner A31 Camera Sensor Interface driver");
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
index e4e7ac6c869f..945d0cb5ab39 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
@@ -51,8 +51,8 @@ struct sun6i_csi_device {
struct sun6i_video video;

struct regmap *regmap;
- struct clk *clk_mod;
- struct clk *clk_ram;
+ struct clk *clock_mod;
+ struct clk *clock_ram;
struct reset_control *reset;

int planar_offset[3];
--
2.35.2