59 static u32 sprd_pwm_read(struct sprd_pwm_chip *spc, u32 hwid, u32 reg)  in sprd_pwm_read()  argument
63 	return readl_relaxed(spc->base + offset);  in sprd_pwm_read()
66 static void sprd_pwm_write(struct sprd_pwm_chip *spc, u32 hwid,  in sprd_pwm_write()  argument
71 	writel_relaxed(val, spc->base + offset);  in sprd_pwm_write()
77 	struct sprd_pwm_chip *spc = sprd_pwm_from_chip(chip);  in sprd_pwm_get_state()  local
78 	struct sprd_pwm_chn *chn = &spc->chn[pwm->hwpwm];  in sprd_pwm_get_state()
89 		dev_err(spc->dev, "failed to enable pwm%u clocks\n",  in sprd_pwm_get_state()
94 	val = sprd_pwm_read(spc, pwm->hwpwm, SPRD_PWM_ENABLE);  in sprd_pwm_get_state()
108 	val = sprd_pwm_read(spc, pwm->hwpwm, SPRD_PWM_PRESCALE);  in sprd_pwm_get_state()
113 	val = sprd_pwm_read(spc, pwm->hwpwm, SPRD_PWM_DUTY);  in sprd_pwm_get_state()
126 static int sprd_pwm_config(struct sprd_pwm_chip *spc, struct pwm_device *pwm,  in sprd_pwm_config()  argument
129 	struct sprd_pwm_chn *chn = &spc->chn[pwm->hwpwm];  in sprd_pwm_config()
159 	sprd_pwm_write(spc, pwm->hwpwm, SPRD_PWM_PRESCALE, prescale);  in sprd_pwm_config()
160 	sprd_pwm_write(spc, pwm->hwpwm, SPRD_PWM_MOD, SPRD_PWM_MOD_MAX);  in sprd_pwm_config()
161 	sprd_pwm_write(spc, pwm->hwpwm, SPRD_PWM_DUTY, duty);  in sprd_pwm_config()
169 	struct sprd_pwm_chip *spc = sprd_pwm_from_chip(chip);  in sprd_pwm_apply()  local
170 	struct sprd_pwm_chn *chn = &spc->chn[pwm->hwpwm];  in sprd_pwm_apply()
186 				dev_err(spc->dev,  in sprd_pwm_apply()
193 		ret = sprd_pwm_config(spc, pwm, state->duty_cycle,  in sprd_pwm_apply()
198 		sprd_pwm_write(spc, pwm->hwpwm, SPRD_PWM_ENABLE, 1);  in sprd_pwm_apply()
205 		sprd_pwm_write(spc, pwm->hwpwm, SPRD_PWM_ENABLE, 0);  in sprd_pwm_apply()
218 static int sprd_pwm_clk_init(struct sprd_pwm_chip *spc)  in sprd_pwm_clk_init()  argument
224 		struct sprd_pwm_chn *chn = &spc->chn[i];  in sprd_pwm_clk_init()
231 		ret = devm_clk_bulk_get(spc->dev, SPRD_PWM_CHN_CLKS_NUM,  in sprd_pwm_clk_init()
237 			return dev_err_probe(spc->dev, ret,  in sprd_pwm_clk_init()
246 		return dev_err_probe(spc->dev, -ENODEV, "no available PWM channels\n");  in sprd_pwm_clk_init()
248 	spc->num_pwms = i;  in sprd_pwm_clk_init()
255 	struct sprd_pwm_chip *spc;  in sprd_pwm_probe()  local
258 	spc = devm_kzalloc(&pdev->dev, sizeof(*spc), GFP_KERNEL);  in sprd_pwm_probe()
259 	if (!spc)  in sprd_pwm_probe()
262 	spc->base = devm_platform_ioremap_resource(pdev, 0);  in sprd_pwm_probe()
263 	if (IS_ERR(spc->base))  in sprd_pwm_probe()
264 		return PTR_ERR(spc->base);  in sprd_pwm_probe()
266 	spc->dev = &pdev->dev;  in sprd_pwm_probe()
268 	ret = sprd_pwm_clk_init(spc);  in sprd_pwm_probe()
272 	spc->chip.dev = &pdev->dev;  in sprd_pwm_probe()
273 	spc->chip.ops = &sprd_pwm_ops;  in sprd_pwm_probe()
274 	spc->chip.npwm = spc->num_pwms;  in sprd_pwm_probe()
276 	ret = devm_pwmchip_add(&pdev->dev, &spc->chip);  in sprd_pwm_probe()