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-rw-r--r--arch/mips/include/asm/mach-jz4740/platform.h1
-rw-r--r--arch/mips/jz4740/Kconfig3
-rw-r--r--arch/mips/jz4740/Makefile2
-rw-r--r--arch/mips/jz4740/board-qi_lb60.c1
-rw-r--r--arch/mips/jz4740/platform.c6
-rw-r--r--arch/mips/jz4740/pwm.c177
6 files changed, 9 insertions, 181 deletions
diff --git a/arch/mips/include/asm/mach-jz4740/platform.h b/arch/mips/include/asm/mach-jz4740/platform.h
index 564ab81d6cd..163e81db880 100644
--- a/arch/mips/include/asm/mach-jz4740/platform.h
+++ b/arch/mips/include/asm/mach-jz4740/platform.h
@@ -31,6 +31,7 @@ extern struct platform_device jz4740_pcm_device;
extern struct platform_device jz4740_codec_device;
extern struct platform_device jz4740_adc_device;
extern struct platform_device jz4740_wdt_device;
+extern struct platform_device jz4740_pwm_device;
void jz4740_serial_device_register(void);
diff --git a/arch/mips/jz4740/Kconfig b/arch/mips/jz4740/Kconfig
index 3e7141f0746..46890305388 100644
--- a/arch/mips/jz4740/Kconfig
+++ b/arch/mips/jz4740/Kconfig
@@ -7,6 +7,3 @@ config JZ4740_QI_LB60
bool "Qi Hardware Ben NanoNote"
endchoice
-
-config HAVE_PWM
- bool
diff --git a/arch/mips/jz4740/Makefile b/arch/mips/jz4740/Makefile
index e44abea9c20..63bad0e491d 100644
--- a/arch/mips/jz4740/Makefile
+++ b/arch/mips/jz4740/Makefile
@@ -5,7 +5,7 @@
# Object file lists.
obj-y += prom.o irq.o time.o reset.o setup.o dma.o \
- gpio.o clock.o platform.o timer.o pwm.o serial.o
+ gpio.o clock.o platform.o timer.o serial.o
obj-$(CONFIG_DEBUG_FS) += clock-debugfs.o
diff --git a/arch/mips/jz4740/board-qi_lb60.c b/arch/mips/jz4740/board-qi_lb60.c
index 9a3d9de4d04..43d964d3628 100644
--- a/arch/mips/jz4740/board-qi_lb60.c
+++ b/arch/mips/jz4740/board-qi_lb60.c
@@ -437,6 +437,7 @@ static struct platform_device *jz_platform_devices[] __initdata = {
&jz4740_codec_device,
&jz4740_rtc_device,
&jz4740_adc_device,
+ &jz4740_pwm_device,
&qi_lb60_gpio_keys,
&qi_lb60_pwm_beeper,
&qi_lb60_charger_device,
diff --git a/arch/mips/jz4740/platform.c b/arch/mips/jz4740/platform.c
index e342ed4cbd4..6d14dcdbd90 100644
--- a/arch/mips/jz4740/platform.c
+++ b/arch/mips/jz4740/platform.c
@@ -323,3 +323,9 @@ struct platform_device jz4740_wdt_device = {
.num_resources = ARRAY_SIZE(jz4740_wdt_resources),
.resource = jz4740_wdt_resources,
};
+
+/* PWM */
+struct platform_device jz4740_pwm_device = {
+ .name = "jz4740-pwm",
+ .id = -1,
+};
diff --git a/arch/mips/jz4740/pwm.c b/arch/mips/jz4740/pwm.c
deleted file mode 100644
index a26a6faec9a..00000000000
--- a/arch/mips/jz4740/pwm.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
- * JZ4740 platform PWM support
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/kernel.h>
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/pwm.h>
-#include <linux/gpio.h>
-
-#include <asm/mach-jz4740/gpio.h>
-#include "timer.h"
-
-static struct clk *jz4740_pwm_clk;
-
-DEFINE_MUTEX(jz4740_pwm_mutex);
-
-struct pwm_device {
- unsigned int id;
- unsigned int gpio;
- bool used;
-};
-
-static struct pwm_device jz4740_pwm_list[] = {
- { 2, JZ_GPIO_PWM2, false },
- { 3, JZ_GPIO_PWM3, false },
- { 4, JZ_GPIO_PWM4, false },
- { 5, JZ_GPIO_PWM5, false },
- { 6, JZ_GPIO_PWM6, false },
- { 7, JZ_GPIO_PWM7, false },
-};
-
-struct pwm_device *pwm_request(int id, const char *label)
-{
- int ret = 0;
- struct pwm_device *pwm;
-
- if (id < 2 || id > 7 || !jz4740_pwm_clk)
- return ERR_PTR(-ENODEV);
-
- mutex_lock(&jz4740_pwm_mutex);
-
- pwm = &jz4740_pwm_list[id - 2];
- if (pwm->used)
- ret = -EBUSY;
- else
- pwm->used = true;
-
- mutex_unlock(&jz4740_pwm_mutex);
-
- if (ret)
- return ERR_PTR(ret);
-
- ret = gpio_request(pwm->gpio, label);
-
- if (ret) {
- printk(KERN_ERR "Failed to request pwm gpio: %d\n", ret);
- pwm->used = false;
- return ERR_PTR(ret);
- }
-
- jz_gpio_set_function(pwm->gpio, JZ_GPIO_FUNC_PWM);
-
- jz4740_timer_start(id);
-
- return pwm;
-}
-
-void pwm_free(struct pwm_device *pwm)
-{
- pwm_disable(pwm);
- jz4740_timer_set_ctrl(pwm->id, 0);
-
- jz_gpio_set_function(pwm->gpio, JZ_GPIO_FUNC_NONE);
- gpio_free(pwm->gpio);
-
- jz4740_timer_stop(pwm->id);
-
- pwm->used = false;
-}
-
-int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
-{
- unsigned long long tmp;
- unsigned long period, duty;
- unsigned int prescaler = 0;
- unsigned int id = pwm->id;
- uint16_t ctrl;
- bool is_enabled;
-
- if (duty_ns < 0 || duty_ns > period_ns)
- return -EINVAL;
-
- tmp = (unsigned long long)clk_get_rate(jz4740_pwm_clk) * period_ns;
- do_div(tmp, 1000000000);
- period = tmp;
-
- while (period > 0xffff && prescaler < 6) {
- period >>= 2;
- ++prescaler;
- }
-
- if (prescaler == 6)
- return -EINVAL;
-
- tmp = (unsigned long long)period * duty_ns;
- do_div(tmp, period_ns);
- duty = period - tmp;
-
- if (duty >= period)
- duty = period - 1;
-
- is_enabled = jz4740_timer_is_enabled(id);
- if (is_enabled)
- pwm_disable(pwm);
-
- jz4740_timer_set_count(id, 0);
- jz4740_timer_set_duty(id, duty);
- jz4740_timer_set_period(id, period);
-
- ctrl = JZ_TIMER_CTRL_PRESCALER(prescaler) | JZ_TIMER_CTRL_SRC_EXT |
- JZ_TIMER_CTRL_PWM_ABBRUPT_SHUTDOWN;
-
- jz4740_timer_set_ctrl(id, ctrl);
-
- if (is_enabled)
- pwm_enable(pwm);
-
- return 0;
-}
-
-int pwm_enable(struct pwm_device *pwm)
-{
- uint32_t ctrl = jz4740_timer_get_ctrl(pwm->id);
-
- ctrl |= JZ_TIMER_CTRL_PWM_ENABLE;
- jz4740_timer_set_ctrl(pwm->id, ctrl);
- jz4740_timer_enable(pwm->id);
-
- return 0;
-}
-
-void pwm_disable(struct pwm_device *pwm)
-{
- uint32_t ctrl = jz4740_timer_get_ctrl(pwm->id);
-
- ctrl &= ~JZ_TIMER_CTRL_PWM_ENABLE;
- jz4740_timer_disable(pwm->id);
- jz4740_timer_set_ctrl(pwm->id, ctrl);
-}
-
-static int __init jz4740_pwm_init(void)
-{
- int ret = 0;
-
- jz4740_pwm_clk = clk_get(NULL, "ext");
-
- if (IS_ERR(jz4740_pwm_clk)) {
- ret = PTR_ERR(jz4740_pwm_clk);
- jz4740_pwm_clk = NULL;
- }
-
- return ret;
-}
-subsys_initcall(jz4740_pwm_init);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-27 11:27:01 +0000