diff options
Diffstat (limited to 'drivers/media/rc/ir-hix5hd2.c')
| -rw-r--r-- | drivers/media/rc/ir-hix5hd2.c | 79 |
1 files changed, 61 insertions, 18 deletions
diff --git a/drivers/media/rc/ir-hix5hd2.c b/drivers/media/rc/ir-hix5hd2.c index 32ccefeff57d..d80cfa455c73 100644 --- a/drivers/media/rc/ir-hix5hd2.c +++ b/drivers/media/rc/ir-hix5hd2.c @@ -37,10 +37,13 @@ #define INT_CLR_RCV BIT(16) #define INT_CLR_RCVTIMEOUT (BIT(16) | BIT(17)) -#define IR_CLK 0x48 #define IR_CLK_ENABLE BIT(4) #define IR_CLK_RESET BIT(5) +/* IR_ENABLE register bits */ +#define IR_ENABLE_EN BIT(0) +#define IR_ENABLE_EN_EXTRA BIT(8) + #define IR_CFG_WIDTH_MASK 0xffff #define IR_CFG_WIDTH_SHIFT 16 #define IR_CFG_FORMAT_MASK 0x3 @@ -58,6 +61,23 @@ #define IR_HIX5HD2_NAME "hix5hd2-ir" +/* Need to set extra bit for enabling IR */ +#define HIX5HD2_FLAG_EXTRA_ENABLE BIT(0) + +struct hix5hd2_soc_data { + u32 clk_reg; + u32 flags; +}; + +static const struct hix5hd2_soc_data hix5hd2_data = { + .clk_reg = 0x48, +}; + +static const struct hix5hd2_soc_data hi3796cv300_data = { + .clk_reg = 0x60, + .flags = HIX5HD2_FLAG_EXTRA_ENABLE, +}; + struct hix5hd2_ir_priv { int irq; void __iomem *base; @@ -66,15 +86,17 @@ struct hix5hd2_ir_priv { struct regmap *regmap; struct clk *clock; unsigned long rate; + const struct hix5hd2_soc_data *socdata; }; -static int hix5hd2_ir_enable(struct hix5hd2_ir_priv *dev, bool on) +static int hix5hd2_ir_clk_enable(struct hix5hd2_ir_priv *dev, bool on) { + u32 clk_reg = dev->socdata->clk_reg; u32 val; int ret = 0; if (dev->regmap) { - regmap_read(dev->regmap, IR_CLK, &val); + regmap_read(dev->regmap, clk_reg, &val); if (on) { val &= ~IR_CLK_RESET; val |= IR_CLK_ENABLE; @@ -82,7 +104,7 @@ static int hix5hd2_ir_enable(struct hix5hd2_ir_priv *dev, bool on) val &= ~IR_CLK_ENABLE; val |= IR_CLK_RESET; } - regmap_write(dev->regmap, IR_CLK, val); + regmap_write(dev->regmap, clk_reg, val); } else { if (on) ret = clk_prepare_enable(dev->clock); @@ -92,12 +114,23 @@ static int hix5hd2_ir_enable(struct hix5hd2_ir_priv *dev, bool on) return ret; } +static inline void hix5hd2_ir_enable(struct hix5hd2_ir_priv *priv) +{ + u32 val = IR_ENABLE_EN; + + if (priv->socdata->flags & HIX5HD2_FLAG_EXTRA_ENABLE) + val |= IR_ENABLE_EN_EXTRA; + + writel_relaxed(val, priv->base + IR_ENABLE); +} + static int hix5hd2_ir_config(struct hix5hd2_ir_priv *priv) { int timeout = 10000; u32 val, rate; - writel_relaxed(0x01, priv->base + IR_ENABLE); + hix5hd2_ir_enable(priv); + while (readl_relaxed(priv->base + IR_BUSY)) { if (timeout--) { udelay(1); @@ -128,13 +161,13 @@ static int hix5hd2_ir_open(struct rc_dev *rdev) struct hix5hd2_ir_priv *priv = rdev->priv; int ret; - ret = hix5hd2_ir_enable(priv, true); + ret = hix5hd2_ir_clk_enable(priv, true); if (ret) return ret; ret = hix5hd2_ir_config(priv); if (ret) { - hix5hd2_ir_enable(priv, false); + hix5hd2_ir_clk_enable(priv, false); return ret; } return 0; @@ -144,7 +177,7 @@ static void hix5hd2_ir_close(struct rc_dev *rdev) { struct hix5hd2_ir_priv *priv = rdev->priv; - hix5hd2_ir_enable(priv, false); + hix5hd2_ir_clk_enable(priv, false); } static irqreturn_t hix5hd2_ir_rx_interrupt(int irq, void *data) @@ -205,6 +238,13 @@ static irqreturn_t hix5hd2_ir_rx_interrupt(int irq, void *data) return IRQ_HANDLED; } +static const struct of_device_id hix5hd2_ir_table[] = { + { .compatible = "hisilicon,hix5hd2-ir", &hix5hd2_data, }, + { .compatible = "hisilicon,hi3796cv300-ir", &hi3796cv300_data, }, + {}, +}; +MODULE_DEVICE_TABLE(of, hix5hd2_ir_table); + static int hix5hd2_ir_probe(struct platform_device *pdev) { struct rc_dev *rdev; @@ -212,6 +252,7 @@ static int hix5hd2_ir_probe(struct platform_device *pdev) struct resource *res; struct hix5hd2_ir_priv *priv; struct device_node *node = pdev->dev.of_node; + const struct of_device_id *of_id; const char *map_name; int ret; @@ -219,6 +260,13 @@ static int hix5hd2_ir_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; + of_id = of_match_device(hix5hd2_ir_table, dev); + if (!of_id) { + dev_err(dev, "Unable to initialize IR data\n"); + return -ENODEV; + } + priv->socdata = of_id->data; + priv->regmap = syscon_regmap_lookup_by_phandle(node, "hisilicon,power-syscon"); if (IS_ERR(priv->regmap)) { @@ -309,7 +357,7 @@ static int hix5hd2_ir_suspend(struct device *dev) struct hix5hd2_ir_priv *priv = dev_get_drvdata(dev); clk_disable_unprepare(priv->clock); - hix5hd2_ir_enable(priv, false); + hix5hd2_ir_clk_enable(priv, false); return 0; } @@ -319,17 +367,18 @@ static int hix5hd2_ir_resume(struct device *dev) struct hix5hd2_ir_priv *priv = dev_get_drvdata(dev); int ret; - ret = hix5hd2_ir_enable(priv, true); + ret = hix5hd2_ir_clk_enable(priv, true); if (ret) return ret; ret = clk_prepare_enable(priv->clock); if (ret) { - hix5hd2_ir_enable(priv, false); + hix5hd2_ir_clk_enable(priv, false); return ret; } - writel_relaxed(0x01, priv->base + IR_ENABLE); + hix5hd2_ir_enable(priv); + writel_relaxed(0x00, priv->base + IR_INTM); writel_relaxed(0xff, priv->base + IR_INTC); writel_relaxed(0x01, priv->base + IR_START); @@ -341,12 +390,6 @@ static int hix5hd2_ir_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(hix5hd2_ir_pm_ops, hix5hd2_ir_suspend, hix5hd2_ir_resume); -static const struct of_device_id hix5hd2_ir_table[] = { - { .compatible = "hisilicon,hix5hd2-ir", }, - {}, -}; -MODULE_DEVICE_TABLE(of, hix5hd2_ir_table); - static struct platform_driver hix5hd2_ir_driver = { .driver = { .name = IR_HIX5HD2_NAME, |