diff options
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-tegra.c | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/drivers/pwm/pwm-tegra.c b/drivers/pwm/pwm-tegra.c index 18cf974ac776..e5a9ffef4a71 100644 --- a/drivers/pwm/pwm-tegra.c +++ b/drivers/pwm/pwm-tegra.c @@ -85,15 +85,14 @@ static inline struct tegra_pwm_chip *to_tegra_pwm_chip(struct pwm_chip *chip) return container_of(chip, struct tegra_pwm_chip, chip); } -static inline u32 pwm_readl(struct tegra_pwm_chip *chip, unsigned int num) +static inline u32 pwm_readl(struct tegra_pwm_chip *pc, unsigned int offset) { - return readl(chip->regs + (num << 4)); + return readl(pc->regs + (offset << 4)); } -static inline void pwm_writel(struct tegra_pwm_chip *chip, unsigned int num, - unsigned long val) +static inline void pwm_writel(struct tegra_pwm_chip *pc, unsigned int offset, u32 value) { - writel(val, chip->regs + (num << 4)); + writel(value, pc->regs + (offset << 4)); } static int tegra_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, @@ -240,25 +239,25 @@ static const struct pwm_ops tegra_pwm_ops = { static int tegra_pwm_probe(struct platform_device *pdev) { - struct tegra_pwm_chip *pwm; + struct tegra_pwm_chip *pc; int ret; - pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL); - if (!pwm) + pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL); + if (!pc) return -ENOMEM; - pwm->soc = of_device_get_match_data(&pdev->dev); - pwm->dev = &pdev->dev; + pc->soc = of_device_get_match_data(&pdev->dev); + pc->dev = &pdev->dev; - pwm->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(pwm->regs)) - return PTR_ERR(pwm->regs); + pc->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pc->regs)) + return PTR_ERR(pc->regs); - platform_set_drvdata(pdev, pwm); + platform_set_drvdata(pdev, pc); - pwm->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(pwm->clk)) - return PTR_ERR(pwm->clk); + pc->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pc->clk)) + return PTR_ERR(pc->clk); ret = devm_tegra_core_dev_init_opp_table_common(&pdev->dev); if (ret) @@ -270,7 +269,7 @@ static int tegra_pwm_probe(struct platform_device *pdev) return ret; /* Set maximum frequency of the IP */ - ret = dev_pm_opp_set_rate(pwm->dev, pwm->soc->max_frequency); + ret = dev_pm_opp_set_rate(pc->dev, pc->soc->max_frequency); if (ret < 0) { dev_err(&pdev->dev, "Failed to set max frequency: %d\n", ret); goto put_pm; @@ -281,29 +280,29 @@ static int tegra_pwm_probe(struct platform_device *pdev) * clock register resolutions. Get the configured frequency * so that PWM period can be calculated more accurately. */ - pwm->clk_rate = clk_get_rate(pwm->clk); + pc->clk_rate = clk_get_rate(pc->clk); /* Set minimum limit of PWM period for the IP */ - pwm->min_period_ns = - (NSEC_PER_SEC / (pwm->soc->max_frequency >> PWM_DUTY_WIDTH)) + 1; + pc->min_period_ns = + (NSEC_PER_SEC / (pc->soc->max_frequency >> PWM_DUTY_WIDTH)) + 1; - pwm->rst = devm_reset_control_get_exclusive(&pdev->dev, "pwm"); - if (IS_ERR(pwm->rst)) { - ret = PTR_ERR(pwm->rst); + pc->rst = devm_reset_control_get_exclusive(&pdev->dev, "pwm"); + if (IS_ERR(pc->rst)) { + ret = PTR_ERR(pc->rst); dev_err(&pdev->dev, "Reset control is not found: %d\n", ret); goto put_pm; } - reset_control_deassert(pwm->rst); + reset_control_deassert(pc->rst); - pwm->chip.dev = &pdev->dev; - pwm->chip.ops = &tegra_pwm_ops; - pwm->chip.npwm = pwm->soc->num_channels; + pc->chip.dev = &pdev->dev; + pc->chip.ops = &tegra_pwm_ops; + pc->chip.npwm = pc->soc->num_channels; - ret = pwmchip_add(&pwm->chip); + ret = pwmchip_add(&pc->chip); if (ret < 0) { dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret); - reset_control_assert(pwm->rst); + reset_control_assert(pc->rst); goto put_pm; } |