diff options
Diffstat (limited to 'drivers/pwm/pwm-lpss.c')
| -rw-r--r-- | drivers/pwm/pwm-lpss.c | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c index 36d4e83e6b79..accdef5dd58e 100644 --- a/drivers/pwm/pwm-lpss.c +++ b/drivers/pwm/pwm-lpss.c @@ -10,6 +10,7 @@ * Author: Alan Cox <[email protected]> */ +#include <linux/bits.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/iopoll.h> @@ -18,17 +19,53 @@ #include <linux/pm_runtime.h> #include <linux/time.h> +#define DEFAULT_SYMBOL_NAMESPACE PWM_LPSS + #include "pwm-lpss.h" #define PWM 0x00000000 #define PWM_ENABLE BIT(31) #define PWM_SW_UPDATE BIT(30) #define PWM_BASE_UNIT_SHIFT 8 -#define PWM_ON_TIME_DIV_MASK 0x000000ff +#define PWM_ON_TIME_DIV_MASK GENMASK(7, 0) /* Size of each PWM register space if multiple */ #define PWM_SIZE 0x400 +/* BayTrail */ +const struct pwm_lpss_boardinfo pwm_lpss_byt_info = { + .clk_rate = 25000000, + .npwm = 1, + .base_unit_bits = 16, +}; +EXPORT_SYMBOL_GPL(pwm_lpss_byt_info); + +/* Braswell */ +const struct pwm_lpss_boardinfo pwm_lpss_bsw_info = { + .clk_rate = 19200000, + .npwm = 1, + .base_unit_bits = 16, + .other_devices_aml_touches_pwm_regs = true, +}; +EXPORT_SYMBOL_GPL(pwm_lpss_bsw_info); + +/* Broxton */ +const struct pwm_lpss_boardinfo pwm_lpss_bxt_info = { + .clk_rate = 19200000, + .npwm = 4, + .base_unit_bits = 22, + .bypass = true, +}; +EXPORT_SYMBOL_GPL(pwm_lpss_bxt_info); + +/* Tangier */ +const struct pwm_lpss_boardinfo pwm_lpss_tng_info = { + .clk_rate = 19200000, + .npwm = 4, + .base_unit_bits = 22, +}; +EXPORT_SYMBOL_GPL(pwm_lpss_tng_info); + static inline struct pwm_lpss_chip *to_lpwm(struct pwm_chip *chip) { return container_of(chip, struct pwm_lpss_chip, chip); @@ -207,7 +244,7 @@ static const struct pwm_ops pwm_lpss_ops = { .owner = THIS_MODULE, }; -struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r, +struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base, const struct pwm_lpss_boardinfo *info) { struct pwm_lpss_chip *lpwm; @@ -222,10 +259,7 @@ struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r, if (!lpwm) return ERR_PTR(-ENOMEM); - lpwm->regs = devm_ioremap_resource(dev, r); - if (IS_ERR(lpwm->regs)) - return ERR_CAST(lpwm->regs); - + lpwm->regs = base; lpwm->info = info; c = lpwm->info->clk_rate; |