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 --- .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 37 ++++++++++++++----- 1 file changed, 28 insertions(+), 9 deletions(-)
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c index 40c39e1e596b..e1a82e233971 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c @@ -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) {