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media: imx-pxp: convert to regmap

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Replace the readl and writel with regmap to ease debugging the registers
from userspace.

Suggested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Michael Tretter 2023-01-13 10:54:22 +01:00 committed by Mauro Carvalho Chehab
parent 4d25e97747
commit 4e5bd3fdbe
1 changed files with 23 additions and 8 deletions
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29
drivers/media/platform/nxp/imx-pxp.c
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@ -21,6 +21,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/sched.h>
#include <linux/slab.h>
@ -176,6 +177,13 @@ enum {
V4L2_M2M_DST = 1,
};
static const struct regmap_config pxp_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = HW_PXP_VERSION,
};
static struct pxp_fmt *find_format(unsigned int pixelformat)
{
struct pxp_fmt *fmt;
@ -207,7 +215,7 @@ struct pxp_dev {
#endif
struct clk *clk;
void __iomem *mmio;
struct regmap *regmap;
const struct pxp_pdata *pdata;
@ -255,12 +263,16 @@ static struct pxp_q_data *get_q_data(struct pxp_ctx *ctx,
static inline u32 pxp_read(struct pxp_dev *dev, u32 reg)
{
return readl(dev->mmio + reg);
u32 value;
regmap_read(dev->regmap, reg, &value);
return value;
}
static inline void pxp_write(struct pxp_dev *dev, u32 reg, u32 value)
{
writel(value, dev->mmio + reg);
regmap_write(dev->regmap, reg, value);
}
static u32 pxp_v4l2_pix_fmt_to_ps_format(u32 v4l2_pix_fmt)
@ -1756,7 +1768,7 @@ static int pxp_soft_reset(struct pxp_dev *dev)
pxp_write(dev, HW_PXP_CTRL_SET, BM_PXP_CTRL_SFTRST);
ret = readl_poll_timeout(dev->mmio + HW_PXP_CTRL, val,
ret = regmap_read_poll_timeout(dev->regmap, HW_PXP_CTRL, val,
val & BM_PXP_CTRL_CLKGATE, 0, 100);
if (ret < 0)
return ret;
@ -1774,6 +1786,7 @@ static int pxp_probe(struct platform_device *pdev)
u32 hw_version;
int irq;
int ret;
void __iomem *mmio;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
@ -1788,9 +1801,11 @@ static int pxp_probe(struct platform_device *pdev)
return ret;
}
dev->mmio = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(dev->mmio))
return PTR_ERR(dev->mmio);
mmio = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(mmio))
return PTR_ERR(mmio);
dev->regmap = devm_regmap_init_mmio(&pdev->dev, mmio,
&pxp_regmap_config);
irq = platform_get_irq(pdev, 0);
if (irq < 0)