pwm: Move TWL6030 PWM driver to PWM framework

This commit moves the driver to drivers/pwm and converts it to the new
PWM framework. In order for this to work properly, register the PWM as
child of the multi-function TWL6030 device.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 0 insertions, 165 deletions

diff --git a/drivers/mfd/twl6030-pwm.c b/drivers/mfd/twl6030-pwm.c
deleted file mode 100644
index e8fee147678d..000000000000
--- a/drivers/mfd/twl6030-pwm.c
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * twl6030_pwm.c
- * Driver for PHOENIX (TWL6030) Pulse Width Modulator
- *
- * Copyright (C) 2010 Texas Instruments
- * Author: Hemanth V <hemanthv@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/i2c/twl.h>
-#include <linux/slab.h>
-
-#define LED_PWM_CTRL1	0xF4
-#define LED_PWM_CTRL2	0xF5
-
-/* Max value for CTRL1 register */
-#define PWM_CTRL1_MAX	255
-
-/* Pull down disable */
-#define PWM_CTRL2_DIS_PD	(1 << 6)
-
-/* Current control 2.5 milli Amps */
-#define PWM_CTRL2_CURR_02	(2 << 4)
-
-/* LED supply source */
-#define PWM_CTRL2_SRC_VAC	(1 << 2)
-
-/* LED modes */
-#define PWM_CTRL2_MODE_HW	(0 << 0)
-#define PWM_CTRL2_MODE_SW	(1 << 0)
-#define PWM_CTRL2_MODE_DIS	(2 << 0)
-
-#define PWM_CTRL2_MODE_MASK	0x3
-
-struct pwm_device {
-	const char *label;
-	unsigned int pwm_id;
-};
-
-int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
-{
-	u8 duty_cycle;
-	int ret;
-
-	if (pwm == NULL || period_ns == 0 || duty_ns > period_ns)
-		return -EINVAL;
-
-	duty_cycle = (duty_ns * PWM_CTRL1_MAX) / period_ns;
-
-	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, duty_cycle, LED_PWM_CTRL1);
-
-	if (ret < 0) {
-		pr_err("%s: Failed to configure PWM, Error %d\n",
-			pwm->label, ret);
-		return ret;
-	}
-	return 0;
-}
-EXPORT_SYMBOL(pwm_config);
-
-int pwm_enable(struct pwm_device *pwm)
-{
-	u8 val;
-	int ret;
-
-	ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
-	if (ret < 0) {
-		pr_err("%s: Failed to enable PWM, Error %d\n", pwm->label, ret);
-		return ret;
-	}
-
-	/* Change mode to software control */
-	val &= ~PWM_CTRL2_MODE_MASK;
-	val |= PWM_CTRL2_MODE_SW;
-
-	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, LED_PWM_CTRL2);
-	if (ret < 0) {
-		pr_err("%s: Failed to enable PWM, Error %d\n", pwm->label, ret);
-		return ret;
-	}
-
-	twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
-	return 0;
-}
-EXPORT_SYMBOL(pwm_enable);
-
-void pwm_disable(struct pwm_device *pwm)
-{
-	u8 val;
-	int ret;
-
-	ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
-	if (ret < 0) {
-		pr_err("%s: Failed to disable PWM, Error %d\n",
-			pwm->label, ret);
-		return;
-	}
-
-	val &= ~PWM_CTRL2_MODE_MASK;
-	val |= PWM_CTRL2_MODE_HW;
-
-	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, LED_PWM_CTRL2);
-	if (ret < 0) {
-		pr_err("%s: Failed to disable PWM, Error %d\n",
-			pwm->label, ret);
-		return;
-	}
-	return;
-}
-EXPORT_SYMBOL(pwm_disable);
-
-struct pwm_device *pwm_request(int pwm_id, const char *label)
-{
-	u8 val;
-	int ret;
-	struct pwm_device *pwm;
-
-	pwm = kzalloc(sizeof(struct pwm_device), GFP_KERNEL);
-	if (pwm == NULL) {
-		pr_err("%s: failed to allocate memory\n", label);
-		return NULL;
-	}
-
-	pwm->label = label;
-	pwm->pwm_id = pwm_id;
-
-	/* Configure PWM */
-	val = PWM_CTRL2_DIS_PD | PWM_CTRL2_CURR_02 | PWM_CTRL2_SRC_VAC |
-		PWM_CTRL2_MODE_HW;
-
-	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, val, LED_PWM_CTRL2);
-
-	if (ret < 0) {
-		pr_err("%s: Failed to configure PWM, Error %d\n",
-			 pwm->label, ret);
-
-		kfree(pwm);
-		return NULL;
-	}
-
-	return pwm;
-}
-EXPORT_SYMBOL(pwm_request);
-
-void pwm_free(struct pwm_device *pwm)
-{
-	pwm_disable(pwm);
-	kfree(pwm);
-}
-EXPORT_SYMBOL(pwm_free);
-
-MODULE_LICENSE("GPL");