diff options
Diffstat (limited to 'drivers/pwm/pwm-tegra.c')
| -rw-r--r-- | drivers/pwm/pwm-tegra.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c index 247156149b44..e4647840cd6e 100644 --- a/drivers/pwm/pwm-tegra.c +++ b/drivers/pwm/pwm-tegra.c @@ -26,6 +26,7 @@ #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/pwm.h> #include <linux/platform_device.h> #include <linux/slab.h> @@ -37,6 +38,10 @@ #define PWM_SCALE_WIDTH 13 #define PWM_SCALE_SHIFT 0 +struct tegra_pwm_soc { + unsigned int num_channels; +}; + struct tegra_pwm_chip { struct pwm_chip chip; struct device *dev; @@ -45,6 +50,8 @@ struct tegra_pwm_chip { struct reset_control*rst; void __iomem *regs; + + const struct tegra_pwm_soc *soc; }; static inline struct tegra_pwm_chip *to_tegra_pwm_chip(struct pwm_chip *chip) @@ -177,6 +184,7 @@ static int tegra_pwm_probe(struct platform_device *pdev) if (!pwm) return -ENOMEM; + pwm->soc = of_device_get_match_data(&pdev->dev); pwm->dev = &pdev->dev; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -202,7 +210,7 @@ static int tegra_pwm_probe(struct platform_device *pdev) pwm->chip.dev = &pdev->dev; pwm->chip.ops = &tegra_pwm_ops; pwm->chip.base = -1; - pwm->chip.npwm = 4; + pwm->chip.npwm = pwm->soc->num_channels; ret = pwmchip_add(&pwm->chip); if (ret < 0) { @@ -245,9 +253,17 @@ static int tegra_pwm_remove(struct platform_device *pdev) return pwmchip_remove(&pc->chip); } +static const struct tegra_pwm_soc tegra20_pwm_soc = { + .num_channels = 4, +}; + +static const struct tegra_pwm_soc tegra186_pwm_soc = { + .num_channels = 1, +}; + static const struct of_device_id tegra_pwm_of_match[] = { - { .compatible = "nvidia,tegra20-pwm" }, - { .compatible = "nvidia,tegra30-pwm" }, + { .compatible = "nvidia,tegra20-pwm", .data = &tegra20_pwm_soc }, + { .compatible = "nvidia,tegra186-pwm", .data = &tegra186_pwm_soc }, { } }; |