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media: mtk-vcodec: Get numbers of register bases from DT

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Different platforms may have different numbers of register bases. Gets the
numbers of register bases from dts (sizeof(u32) * 4 bytes for each).

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Yunfei Dong 2022-01-13 05:10:37 +01:00 committed by Mauro Carvalho Chehab
parent d95a63daca
commit d1c51b7302
1 changed files with 28 additions and 9 deletions
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37
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
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@ -75,6 +75,30 @@ static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv)
return IRQ_HANDLED;
}
static int mtk_vcodec_get_reg_bases(struct mtk_vcodec_dev *dev)
{
struct platform_device *pdev = dev->plat_dev;
int reg_num, i;
/* Sizeof(u32) * 4 bytes for each register base. */
reg_num = of_property_count_elems_of_size(pdev->dev.of_node, "reg",
sizeof(u32) * 4);
if (reg_num <= 0 || reg_num > NUM_MAX_VDEC_REG_BASE) {
dev_err(&pdev->dev, "Invalid register property size: %d\n", reg_num);
return -EINVAL;
}
for (i = 0; i < reg_num; i++) {
dev->reg_base[i] = devm_platform_ioremap_resource(pdev, i);
if (IS_ERR(dev->reg_base[i]))
return PTR_ERR(dev->reg_base[i]);
mtk_v4l2_debug(2, "reg[%d] base=%p", i, dev->reg_base[i]);
}
return 0;
}
static int fops_vcodec_open(struct file *file)
{
struct mtk_vcodec_dev *dev = video_drvdata(file);
@ -203,7 +227,7 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
struct resource *res;
phandle rproc_phandle;
enum mtk_vcodec_fw_type fw_type;
int i, ret;
int ret;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
@ -235,14 +259,9 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
goto err_dec_pm;
}
for (i = 0; i < NUM_MAX_VDEC_REG_BASE; i++) {
dev->reg_base[i] = devm_platform_ioremap_resource(pdev, i);
if (IS_ERR((__force void *)dev->reg_base[i])) {
ret = PTR_ERR((__force void *)dev->reg_base[i]);
goto err_res;
}
mtk_v4l2_debug(2, "reg[%d] base=%p", i, dev->reg_base[i]);
}
ret = mtk_vcodec_get_reg_bases(dev);
if (ret)
goto err_res;
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {