1 files changed, 0 insertions, 397 deletions

diff --git a/sys/arm64/rockchip/rk_pwm.c b/sys/arm64/rockchip/rk_pwm.c
deleted file mode 100644
index 260899f15d89..000000000000
--- a/sys/arm64/rockchip/rk_pwm.c
+++ /dev/null
@@ -1,397 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
- * Copyright (c) 2019 Brandon Bergren <git@bdragon.rtk0.net>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/rman.h>
-#include <sys/resource.h>
-#include <machine/bus.h>
-
-#include <dev/ofw/ofw_bus.h>
-#include <dev/ofw/ofw_bus_subr.h>
-
-#include <dev/extres/clk/clk.h>
-
-#include "pwmbus_if.h"
-
-/* Register offsets. */
-#define	RK_PWM_COUNTER			0x00
-#define	RK_PWM_PERIOD			0x04
-#define	RK_PWM_DUTY			0x08
-#define	RK_PWM_CTRL			0x0c
-
-#define	SET(reg,mask,val)		reg = ((reg & ~mask) | val)
-
-#define	RK_PWM_CTRL_ENABLE_MASK		(1 << 0)
-#define	 RK_PWM_CTRL_ENABLED		(1 << 0)
-#define	 RK_PWM_CTRL_DISABLED		(0)
-
-#define	RK_PWM_CTRL_MODE_MASK		(3 << 1)
-#define	 RK_PWM_CTRL_MODE_ONESHOT	(0)
-#define	 RK_PWM_CTRL_MODE_CONTINUOUS	(1 << 1)
-#define	 RK_PWM_CTRL_MODE_CAPTURE	(1 << 2)
-
-#define	RK_PWM_CTRL_DUTY_MASK		(1 << 3)
-#define	 RK_PWM_CTRL_DUTY_POSITIVE	(1 << 3)
-#define	 RK_PWM_CTRL_DUTY_NEGATIVE	(0)
-
-#define	RK_PWM_CTRL_INACTIVE_MASK	(1 << 4)
-#define	 RK_PWM_CTRL_INACTIVE_POSITIVE	(1 << 4)
-#define	 RK_PWM_CTRL_INACTIVE_NEGATIVE	(0)
-
-/* PWM Output Alignment */
-#define	RK_PWM_CTRL_ALIGN_MASK		(1 << 5)
-#define	 RK_PWM_CTRL_ALIGN_CENTER	(1 << 5)
-#define	 RK_PWM_CTRL_ALIGN_LEFT		(0)
-
-/* Low power mode: disable prescaler when inactive */
-#define	RK_PWM_CTRL_LP_MASK		(1 << 8)
-#define	 RK_PWM_CTRL_LP_ENABLE		(1 << 8)
-#define	 RK_PWM_CTRL_LP_DISABLE		(0)
-
-/* Clock source: bypass the scaler or not */
-#define	RK_PWM_CTRL_CLOCKSRC_MASK	(1 << 9)
-#define	 RK_PWM_CTRL_CLOCKSRC_NONSCALED	(0)
-#define	 RK_PWM_CTRL_CLOCKSRC_SCALED	(1 << 9)
-
-#define	RK_PWM_CTRL_PRESCALE_MASK	(7 << 12)
-#define	RK_PWM_CTRL_PRESCALE_SHIFT	12
-
-#define	RK_PWM_CTRL_SCALE_MASK		(0xFF << 16)
-#define	RK_PWM_CTRL_SCALE_SHIFT		16
-
-#define	RK_PWM_CTRL_REPEAT_MASK		(0xFF << 24)
-#define	RK_PWM_CTRL_REPEAT_SHIFT	24
-
-#define	NS_PER_SEC	1000000000
-
-static struct ofw_compat_data compat_data[] = {
-	{ "rockchip,rk3288-pwm",		1 },
-	{ "rockchip,rk3399-pwm",		1 },
-	{ NULL,					0 }
-};
-
-static struct resource_spec rk_pwm_spec[] = {
-	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },
-	{ -1, 0 }
-};
-
-struct rk_pwm_softc {
-	device_t	dev;
-	device_t	busdev;
-	clk_t		clk;
-	struct resource	*res;
-
-	uint64_t	clk_freq;
-	unsigned int	period;
-	unsigned int	duty;
-	uint32_t	flags;
-	uint8_t		prescaler;
-	uint8_t		scaler;
-	bool		using_scaler;
-	bool		enabled;
-};
-
-#define	RK_PWM_READ(sc, reg)		bus_read_4((sc)->res, (reg))
-#define	RK_PWM_WRITE(sc, reg, val)	bus_write_4((sc)->res, (reg), (val))
-
-static int rk_pwm_probe(device_t dev);
-static int rk_pwm_attach(device_t dev);
-static int rk_pwm_detach(device_t dev);
-
-static int
-rk_pwm_probe(device_t dev)
-{
-	if (!ofw_bus_status_okay(dev))
-		return (ENXIO);
-
-	if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
-		return (ENXIO);
-
-	device_set_desc(dev, "Rockchip PWM");
-	return (BUS_PROBE_DEFAULT);
-}
-
-static int
-rk_pwm_attach(device_t dev)
-{
-	struct rk_pwm_softc *sc;
-	phandle_t node;
-	uint64_t clk_freq;
-	uint32_t reg;
-	int error;
-
-	sc = device_get_softc(dev);
-	sc->dev = dev;
-
-	error = clk_get_by_ofw_index(dev, 0, 0, &sc->clk);
-	if (error != 0) {
-		device_printf(dev, "cannot get clock\n");
-		goto fail;
-	}
-	error = clk_enable(sc->clk);
-	if (error != 0) {
-		device_printf(dev, "cannot enable clock\n");
-		goto fail;
-	}
-	error = clk_get_freq(sc->clk, &sc->clk_freq);
-	if (error != 0) {
-		device_printf(dev, "cannot get base frequency\n");
-		goto fail;
-	}
-
-	if (bus_alloc_resources(dev, rk_pwm_spec, &sc->res) != 0) {
-		device_printf(dev, "cannot allocate resources for device\n");
-		error = ENXIO;
-		goto fail;
-	}
-
-	/* Read the configuration left by U-Boot */
-	reg = RK_PWM_READ(sc, RK_PWM_CTRL);
-	if ((reg & RK_PWM_CTRL_ENABLE_MASK) == RK_PWM_CTRL_ENABLED)
-		sc->enabled = true;
-
-	reg = RK_PWM_READ(sc, RK_PWM_CTRL);
-	reg &= RK_PWM_CTRL_PRESCALE_MASK;
-	sc->prescaler = reg >> RK_PWM_CTRL_PRESCALE_SHIFT;
-
-	reg = RK_PWM_READ(sc, RK_PWM_CTRL);
-	reg &= RK_PWM_CTRL_SCALE_MASK;
-	sc->scaler = reg >> RK_PWM_CTRL_SCALE_SHIFT;
-
-	reg = RK_PWM_READ(sc, RK_PWM_CTRL);
-	if ((reg & RK_PWM_CTRL_CLOCKSRC_MASK) == RK_PWM_CTRL_CLOCKSRC_SCALED)
-		sc->using_scaler = true;
-	else
-		sc->using_scaler = false;
-
-	clk_freq = sc->clk_freq / (2 ^ sc->prescaler);
-
-	if (sc->using_scaler) {
-		if (sc->scaler == 0)
-			clk_freq /= 512;
-		else
-			clk_freq /= (sc->scaler * 2);
-	}
-
-	reg = RK_PWM_READ(sc, RK_PWM_PERIOD);
-	sc->period = NS_PER_SEC /
-		(clk_freq / reg);
-	reg = RK_PWM_READ(sc, RK_PWM_DUTY);
-	sc->duty = NS_PER_SEC /
-		(clk_freq / reg);
-
-	node = ofw_bus_get_node(dev);
-	OF_device_register_xref(OF_xref_from_node(node), dev);
-
-	sc->busdev = device_add_child(dev, "pwmbus", -1);
-
-	return (bus_generic_attach(dev));
-
-fail:
-	rk_pwm_detach(dev);
-	return (error);
-}
-
-static int
-rk_pwm_detach(device_t dev)
-{
-	struct rk_pwm_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	bus_generic_detach(sc->dev);
-
-	bus_release_resources(dev, rk_pwm_spec, &sc->res);
-
-	return (0);
-}
-
-static phandle_t
-aw_pwm_get_node(device_t bus, device_t dev)
-{
-
-	/*
-	 * Share our controller node with our pwmbus child; it instantiates
-	 * devices by walking the children contained within our node.
-	 */
-	return ofw_bus_get_node(bus);
-}
-
-static int
-rk_pwm_channel_count(device_t dev, u_int *nchannel)
-{
-	/* The device supports 4 channels, but attaches multiple times in the
-	 * device tree. This interferes with advanced usage though, as
-	 * the interrupt capability and channel 3 FIFO register offsets
-	 * don't work right in this situation.
-	 * But since we don't support those yet, pretend we are singlechannel.
-	 */
-	*nchannel = 1;
-
-	return (0);
-}
-
-static int
-rk_pwm_channel_config(device_t dev, u_int channel, u_int period, u_int duty)
-{
-	struct rk_pwm_softc *sc;
-	uint64_t period_freq, duty_freq;
-	uint32_t reg;
-	uint32_t period_out;
-	uint32_t duty_out;
-	uint8_t prescaler;
-	uint8_t scaler;
-	bool using_scaler;
-
-	sc = device_get_softc(dev);
-
-	period_freq = NS_PER_SEC / period;
-	/* Datasheet doesn't define, so use Nyquist frequency. */
-	if (period_freq > (sc->clk_freq / 2))
-		return (EINVAL);
-	duty_freq = NS_PER_SEC / duty;
-	if (duty_freq < period_freq) {
-		device_printf(sc->dev, "duty < period\n");
-		return (EINVAL);
-	}
-
-	/* Assuming 24 MHz reference, we should never actually have
-           to use the divider due to pwm API limitations. */
-	prescaler = 0;
-	scaler = 0;
-	using_scaler = false;
-
-	/* XXX Expand API to allow for 64 bit period/duty. */
-	period_out = (sc->clk_freq * period) / NS_PER_SEC;
-	duty_out = (sc->clk_freq * duty) / NS_PER_SEC;
-
-	reg = RK_PWM_READ(sc, RK_PWM_CTRL);
-
-	if ((reg & RK_PWM_CTRL_MODE_MASK) != RK_PWM_CTRL_MODE_CONTINUOUS) {
-		/* Switching modes, disable just in case. */
-		SET(reg, RK_PWM_CTRL_ENABLE_MASK, RK_PWM_CTRL_DISABLED);
-		RK_PWM_WRITE(sc, RK_PWM_CTRL, reg);
-	}
-
-	RK_PWM_WRITE(sc, RK_PWM_PERIOD, period_out);
-	RK_PWM_WRITE(sc, RK_PWM_DUTY, duty_out);
-
-	SET(reg, RK_PWM_CTRL_ENABLE_MASK, RK_PWM_CTRL_ENABLED);
-	SET(reg, RK_PWM_CTRL_MODE_MASK, RK_PWM_CTRL_MODE_CONTINUOUS);
-	SET(reg, RK_PWM_CTRL_ALIGN_MASK, RK_PWM_CTRL_ALIGN_LEFT);
-	SET(reg, RK_PWM_CTRL_CLOCKSRC_MASK, using_scaler);
-	SET(reg, RK_PWM_CTRL_PRESCALE_MASK,
-		prescaler <<  RK_PWM_CTRL_PRESCALE_SHIFT);
-	SET(reg, RK_PWM_CTRL_SCALE_MASK,
-		scaler << RK_PWM_CTRL_SCALE_SHIFT);
-
-	RK_PWM_WRITE(sc, RK_PWM_CTRL, reg);
-
-	sc->period = period;
-	sc->duty = duty;
-
-	return (0);
-}
-
-static int
-rk_pwm_channel_get_config(device_t dev, u_int channel, u_int *period, u_int *duty)
-{
-	struct rk_pwm_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	*period = sc->period;
-	*duty = sc->duty;
-
-	return (0);
-}
-
-static int
-rk_pwm_channel_enable(device_t dev, u_int channel, bool enable)
-{
-	struct rk_pwm_softc *sc;
-	uint32_t reg;
-
-	sc = device_get_softc(dev);
-
-	if (enable && sc->enabled)
-		return (0);
-
-	reg = RK_PWM_READ(sc, RK_PWM_CTRL);
-	SET(reg, RK_PWM_CTRL_ENABLE_MASK, enable);
-
-	RK_PWM_WRITE(sc, RK_PWM_CTRL, reg);
-
-	sc->enabled = enable;
-
-	return (0);
-}
-
-static int
-rk_pwm_channel_is_enabled(device_t dev, u_int channel, bool *enabled)
-{
-	struct rk_pwm_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	*enabled = sc->enabled;
-
-	return (0);
-}
-
-static device_method_t rk_pwm_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_probe,		rk_pwm_probe),
-	DEVMETHOD(device_attach,	rk_pwm_attach),
-	DEVMETHOD(device_detach,	rk_pwm_detach),
-
-	/* ofw_bus interface */
-	DEVMETHOD(ofw_bus_get_node,	aw_pwm_get_node),
-
-	/* pwm interface */
-	DEVMETHOD(pwmbus_channel_count,		rk_pwm_channel_count),
-	DEVMETHOD(pwmbus_channel_config,	rk_pwm_channel_config),
-	DEVMETHOD(pwmbus_channel_get_config,	rk_pwm_channel_get_config),
-	DEVMETHOD(pwmbus_channel_enable,	rk_pwm_channel_enable),
-	DEVMETHOD(pwmbus_channel_is_enabled,	rk_pwm_channel_is_enabled),
-
-	DEVMETHOD_END
-};
-
-static driver_t rk_pwm_driver = {
-	"pwm",
-	rk_pwm_methods,
-	sizeof(struct rk_pwm_softc),
-};
-
-DRIVER_MODULE(rk_pwm, simplebus, rk_pwm_driver, 0, 0);
-SIMPLEBUS_PNP_INFO(compat_data);