diff options
Diffstat (limited to 'drivers/pwm/pwm-fsl-ftm.c')
| -rw-r--r-- | drivers/pwm/pwm-fsl-ftm.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/pwm/pwm-fsl-ftm.c b/drivers/pwm/pwm-fsl-ftm.c index 6683931872fc..35406b2e1925 100644 --- a/drivers/pwm/pwm-fsl-ftm.c +++ b/drivers/pwm/pwm-fsl-ftm.c @@ -3,6 +3,7 @@ * Freescale FlexTimer Module (FTM) PWM Driver * * Copyright 2012-2013 Freescale Semiconductor, Inc. + * Copyright 2020-2025 NXP */ #include <linux/clk.h> @@ -30,6 +31,8 @@ enum fsl_pwm_clk { struct fsl_ftm_soc { bool has_enable_bits; + bool has_flt_reg; + unsigned int npwm; }; struct fsl_pwm_periodcfg { @@ -374,6 +377,20 @@ static bool fsl_pwm_volatile_reg(struct device *dev, unsigned int reg) return false; } +static bool fsl_pwm_is_reg(struct device *dev, unsigned int reg) +{ + struct pwm_chip *chip = dev_get_drvdata(dev); + struct fsl_pwm_chip *fpc = to_fsl_chip(chip); + + if (reg >= FTM_CSC(fpc->soc->npwm) && reg < FTM_CNTIN) + return false; + + if ((reg == FTM_FLTCTRL || reg == FTM_FLTPOL) && !fpc->soc->has_flt_reg) + return false; + + return true; +} + static const struct regmap_config fsl_pwm_regmap_config = { .reg_bits = 32, .reg_stride = 4, @@ -382,21 +399,24 @@ static const struct regmap_config fsl_pwm_regmap_config = { .max_register = FTM_PWMLOAD, .volatile_reg = fsl_pwm_volatile_reg, .cache_type = REGCACHE_FLAT, + .writeable_reg = fsl_pwm_is_reg, + .readable_reg = fsl_pwm_is_reg, }; static int fsl_pwm_probe(struct platform_device *pdev) { + const struct fsl_ftm_soc *soc = of_device_get_match_data(&pdev->dev); struct pwm_chip *chip; struct fsl_pwm_chip *fpc; void __iomem *base; int ret; - chip = devm_pwmchip_alloc(&pdev->dev, 8, sizeof(*fpc)); + chip = devm_pwmchip_alloc(&pdev->dev, soc->npwm, sizeof(*fpc)); if (IS_ERR(chip)) return PTR_ERR(chip); fpc = to_fsl_chip(chip); - fpc->soc = of_device_get_match_data(&pdev->dev); + fpc->soc = soc; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) @@ -512,15 +532,26 @@ static const struct dev_pm_ops fsl_pwm_pm_ops = { static const struct fsl_ftm_soc vf610_ftm_pwm = { .has_enable_bits = false, + .has_flt_reg = true, + .npwm = 8, }; static const struct fsl_ftm_soc imx8qm_ftm_pwm = { .has_enable_bits = true, + .has_flt_reg = true, + .npwm = 8, +}; + +static const struct fsl_ftm_soc s32g2_ftm_pwm = { + .has_enable_bits = true, + .has_flt_reg = false, + .npwm = 6, }; static const struct of_device_id fsl_pwm_dt_ids[] = { { .compatible = "fsl,vf610-ftm-pwm", .data = &vf610_ftm_pwm }, { .compatible = "fsl,imx8qm-ftm-pwm", .data = &imx8qm_ftm_pwm }, + { .compatible = "nxp,s32g2-ftm-pwm", .data = &s32g2_ftm_pwm }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, fsl_pwm_dt_ids); |