diff options
Diffstat (limited to 'drivers/pwm/pwm-ab8500.c')
| -rw-r--r-- | drivers/pwm/pwm-ab8500.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/pwm/pwm-ab8500.c b/drivers/pwm/pwm-ab8500.c index e2a26d9da25b..281f74a1c50b 100644 --- a/drivers/pwm/pwm-ab8500.c +++ b/drivers/pwm/pwm-ab8500.c @@ -22,14 +22,21 @@ struct ab8500_pwm_chip { struct pwm_chip chip; + unsigned int hwid; }; +static struct ab8500_pwm_chip *ab8500_pwm_from_chip(struct pwm_chip *chip) +{ + return container_of(chip, struct ab8500_pwm_chip, chip); +} + static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, const struct pwm_state *state) { int ret; u8 reg; unsigned int higher_val, lower_val; + struct ab8500_pwm_chip *ab8500 = ab8500_pwm_from_chip(chip); if (state->polarity != PWM_POLARITY_NORMAL) return -EINVAL; @@ -37,7 +44,7 @@ static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, if (!state->enabled) { ret = abx500_mask_and_set_register_interruptible(chip->dev, AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG, - 1 << (chip->base - 1), 0); + 1 << ab8500->hwid, 0); if (ret < 0) dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n", @@ -56,7 +63,7 @@ static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, */ higher_val = ((state->duty_cycle & 0x0300) >> 8); - reg = AB8500_PWM_OUT_CTRL1_REG + ((chip->base - 1) * 2); + reg = AB8500_PWM_OUT_CTRL1_REG + (ab8500->hwid * 2); ret = abx500_set_register_interruptible(chip->dev, AB8500_MISC, reg, (u8)lower_val); @@ -70,7 +77,7 @@ static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, ret = abx500_mask_and_set_register_interruptible(chip->dev, AB8500_MISC, AB8500_PWM_OUT_CTRL7_REG, - 1 << (chip->base - 1), 1 << (chip->base - 1)); + 1 << ab8500->hwid, 1 << ab8500->hwid); if (ret < 0) dev_err(chip->dev, "%s: Failed to enable PWM, Error %d\n", pwm->label, ret); @@ -88,6 +95,9 @@ static int ab8500_pwm_probe(struct platform_device *pdev) struct ab8500_pwm_chip *ab8500; int err; + if (pdev->id < 1 || pdev->id > 31) + return dev_err_probe(&pdev->dev, EINVAL, "Invalid device id %d\n", pdev->id); + /* * Nothing to be done in probe, this is required to get the * device which is required for ab8500 read and write @@ -99,6 +109,7 @@ static int ab8500_pwm_probe(struct platform_device *pdev) ab8500->chip.dev = &pdev->dev; ab8500->chip.ops = &ab8500_pwm_ops; ab8500->chip.npwm = 1; + ab8500->hwid = pdev->id - 1; err = pwmchip_add(&ab8500->chip); if (err < 0) |