drivers/pwm/pwm-rcar.c

8  * - The hardware cannot generate a 0% duty cycle.
26 #define RCAR_PWMCR		0x00
27 #define  RCAR_PWMCR_CC0_MASK	0x000f0000
32 #define  RCAR_PWMCR_EN0		BIT(0)
34 #define RCAR_PWMCNT		0x04
35 #define  RCAR_PWMCNT_CYC0_MASK	0x03ff0000
37 #define  RCAR_PWMCNT_PH0_MASK	0x000003ff
38 #define  RCAR_PWMCNT_PH0_SHIFT	0
77 	if (clk_rate == 0)  in rcar_pwm_get_clock_division()
124 	if (cyc == 0 || ph == 0)  in rcar_pwm_set_counter()
129 	return 0;  in rcar_pwm_set_counter()
146 	/* Don't enable the PWM device if CYC0 or PH0 is 0 */  in rcar_pwm_enable()
148 	if ((value & RCAR_PWMCNT_CYC0_MASK) == 0 ||  in rcar_pwm_enable()
149 	    (value & RCAR_PWMCNT_PH0_MASK) == 0)  in rcar_pwm_enable()
154 	return 0;  in rcar_pwm_enable()
159 	rcar_pwm_update(rp, RCAR_PWMCR_EN0, 0, RCAR_PWMCR);  in rcar_pwm_disable()
174 		return 0;  in rcar_pwm_apply()
178 	if (div < 0)  in rcar_pwm_apply()
187 	/* The SYNC should be set to 0 even if rcar_pwm_set_counter failed */  in rcar_pwm_apply()
188 	rcar_pwm_update(rp, RCAR_PWMCR_SYNC, 0, RCAR_PWMCR);  in rcar_pwm_apply()
213 	rcar_pwm->base = devm_platform_ioremap_resource(pdev, 0);  in rcar_pwm_probe()
230 	if (ret < 0) {  in rcar_pwm_probe()
236 	return 0;  in rcar_pwm_probe()