Lines Matching +full:clk +full:- +full:pwm

1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
41 #include <dev/clk/clk.h>
70 /* PWM Output Alignment */
97 	{ "rockchip,rk3288-pwm",		1 },
98 	{ "rockchip,rk3399-pwm",		1 },
104 	{ -1, 0 }
110 	clk_t		clk;
123 #define	RK_PWM_READ(sc, reg)		bus_read_4((sc)->res, (reg))
124 #define	RK_PWM_WRITE(sc, reg, val)	bus_write_4((sc)->res, (reg), (val))
136 	if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
139 	device_set_desc(dev, "Rockchip PWM");
153 	sc->dev = dev;
155 	error = clk_get_by_ofw_index(dev, 0, 0, &sc->clk);
160 	error = clk_enable(sc->clk);
165 	error = clk_get_freq(sc->clk, &sc->clk_freq);
171 	if (bus_alloc_resources(dev, rk_pwm_spec, &sc->res) != 0) {
177 	/* Read the configuration left by U-Boot */
180 		sc->enabled = true;
184 	sc->prescaler = reg >> RK_PWM_CTRL_PRESCALE_SHIFT;
188 	sc->scaler = reg >> RK_PWM_CTRL_SCALE_SHIFT;
192 		sc->using_scaler = true;
194 		sc->using_scaler = false;
196 	clk_freq = sc->clk_freq / (2 ^ sc->prescaler);
198 	if (sc->using_scaler) {
199 		if (sc->scaler == 0)
202 			clk_freq /= (sc->scaler * 2);
206 	sc->period = NS_PER_SEC /
209 	sc->duty = NS_PER_SEC /
215 	sc->busdev = device_add_child(dev, "pwmbus", DEVICE_UNIT_ANY);
232 	bus_generic_detach(sc->dev);
234 	bus_release_resources(dev, rk_pwm_spec, &sc->res);
280 	if (period_freq > (sc->clk_freq / 2))
284 		device_printf(sc->dev, "duty < period\n");
289            to use the divider due to pwm API limitations. */
295 	period_out = (sc->clk_freq * period) / NS_PER_SEC;
296 	duty_out = (sc->clk_freq * duty) / NS_PER_SEC;
320 	sc->period = period;
321 	sc->duty = duty;
333 	*period = sc->period;
334 	*duty = sc->duty;
347 	if (enable && sc->enabled)
355 	sc->enabled = enable;
367 	*enabled = sc->enabled;
381 	/* pwm interface */
392 	"pwm",