Lines Matching refs:pwm
113 struct pwm_device *pwm, in sun4i_pwm_get_state() argument
130 if ((val & BIT_CH(PWM_BYPASS, pwm->hwpwm)) && in sun4i_pwm_get_state()
139 if ((PWM_REG_PRESCAL(val, pwm->hwpwm) == PWM_PRESCAL_MASK) && in sun4i_pwm_get_state()
143 prescaler = prescaler_table[PWM_REG_PRESCAL(val, pwm->hwpwm)]; in sun4i_pwm_get_state()
148 if (val & BIT_CH(PWM_ACT_STATE, pwm->hwpwm)) in sun4i_pwm_get_state()
153 if ((val & BIT_CH(PWM_CLK_GATING | PWM_EN, pwm->hwpwm)) == in sun4i_pwm_get_state()
154 BIT_CH(PWM_CLK_GATING | PWM_EN, pwm->hwpwm)) in sun4i_pwm_get_state()
159 val = sun4i_pwm_readl(sun4i_pwm, PWM_CH_PRD(pwm->hwpwm)); in sun4i_pwm_get_state()
231 static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, in sun4i_pwm_apply() argument
242 pwm_get_state(pwm, &cstate); in sun4i_pwm_apply()
266 ctrl |= BIT_CH(PWM_BYPASS, pwm->hwpwm); in sun4i_pwm_apply()
273 ctrl &= ~BIT_CH(PWM_BYPASS, pwm->hwpwm); in sun4i_pwm_apply()
276 if (PWM_REG_PRESCAL(ctrl, pwm->hwpwm) != prescaler) { in sun4i_pwm_apply()
278 ctrl &= ~BIT_CH(PWM_CLK_GATING, pwm->hwpwm); in sun4i_pwm_apply()
281 ctrl &= ~BIT_CH(PWM_PRESCAL_MASK, pwm->hwpwm); in sun4i_pwm_apply()
282 ctrl |= BIT_CH(prescaler, pwm->hwpwm); in sun4i_pwm_apply()
286 sun4i_pwm_writel(sun4i_pwm, val, PWM_CH_PRD(pwm->hwpwm)); in sun4i_pwm_apply()
287 sun4i_pwm->next_period[pwm->hwpwm] = jiffies + in sun4i_pwm_apply()
291 ctrl &= ~BIT_CH(PWM_ACT_STATE, pwm->hwpwm); in sun4i_pwm_apply()
293 ctrl |= BIT_CH(PWM_ACT_STATE, pwm->hwpwm); in sun4i_pwm_apply()
295 ctrl |= BIT_CH(PWM_CLK_GATING, pwm->hwpwm); in sun4i_pwm_apply()
298 ctrl |= BIT_CH(PWM_EN, pwm->hwpwm); in sun4i_pwm_apply()
309 if (time_before(now, sun4i_pwm->next_period[pwm->hwpwm])) { in sun4i_pwm_apply()
310 delay_us = jiffies_to_usecs(sun4i_pwm->next_period[pwm->hwpwm] - in sun4i_pwm_apply()
320 ctrl &= ~BIT_CH(PWM_CLK_GATING, pwm->hwpwm); in sun4i_pwm_apply()
321 ctrl &= ~BIT_CH(PWM_EN, pwm->hwpwm); in sun4i_pwm_apply()
393 struct sun4i_pwm_chip *pwm; in sun4i_pwm_probe() local
396 pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL); in sun4i_pwm_probe()
397 if (!pwm) in sun4i_pwm_probe()
400 pwm->data = of_device_get_match_data(&pdev->dev); in sun4i_pwm_probe()
401 if (!pwm->data) in sun4i_pwm_probe()
404 pwm->base = devm_platform_ioremap_resource(pdev, 0); in sun4i_pwm_probe()
405 if (IS_ERR(pwm->base)) in sun4i_pwm_probe()
406 return PTR_ERR(pwm->base); in sun4i_pwm_probe()
419 pwm->clk = devm_clk_get_optional(&pdev->dev, "mod"); in sun4i_pwm_probe()
420 if (IS_ERR(pwm->clk)) in sun4i_pwm_probe()
421 return dev_err_probe(&pdev->dev, PTR_ERR(pwm->clk), in sun4i_pwm_probe()
424 if (!pwm->clk) { in sun4i_pwm_probe()
425 pwm->clk = devm_clk_get(&pdev->dev, NULL); in sun4i_pwm_probe()
426 if (IS_ERR(pwm->clk)) in sun4i_pwm_probe()
427 return dev_err_probe(&pdev->dev, PTR_ERR(pwm->clk), in sun4i_pwm_probe()
431 pwm->bus_clk = devm_clk_get_optional(&pdev->dev, "bus"); in sun4i_pwm_probe()
432 if (IS_ERR(pwm->bus_clk)) in sun4i_pwm_probe()
433 return dev_err_probe(&pdev->dev, PTR_ERR(pwm->bus_clk), in sun4i_pwm_probe()
436 pwm->rst = devm_reset_control_get_optional_shared(&pdev->dev, NULL); in sun4i_pwm_probe()
437 if (IS_ERR(pwm->rst)) in sun4i_pwm_probe()
438 return dev_err_probe(&pdev->dev, PTR_ERR(pwm->rst), in sun4i_pwm_probe()
442 ret = reset_control_deassert(pwm->rst); in sun4i_pwm_probe()
453 ret = clk_prepare_enable(pwm->bus_clk); in sun4i_pwm_probe()
460 pwm->chip.dev = &pdev->dev; in sun4i_pwm_probe()
461 pwm->chip.ops = &sun4i_pwm_ops; in sun4i_pwm_probe()
462 pwm->chip.npwm = pwm->data->npwm; in sun4i_pwm_probe()
464 spin_lock_init(&pwm->ctrl_lock); in sun4i_pwm_probe()
466 ret = pwmchip_add(&pwm->chip); in sun4i_pwm_probe()
472 platform_set_drvdata(pdev, pwm); in sun4i_pwm_probe()
477 clk_disable_unprepare(pwm->bus_clk); in sun4i_pwm_probe()
479 reset_control_assert(pwm->rst); in sun4i_pwm_probe()
486 struct sun4i_pwm_chip *pwm = platform_get_drvdata(pdev); in sun4i_pwm_remove() local
488 pwmchip_remove(&pwm->chip); in sun4i_pwm_remove()
490 clk_disable_unprepare(pwm->bus_clk); in sun4i_pwm_remove()
491 reset_control_assert(pwm->rst); in sun4i_pwm_remove()