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pwm: Remove pwm-twl6030 driver 

This driver only supported the Charging indicator LED.
New set of drivers going to provide support for both PWMs and LEDs for twl4030
and twl6030 series of PMICs.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
Peter Ujfalusi 2012-11-27 11:09:59 +01:00 коммит произвёл Thierry Reding
Родитель aa7656471d
Коммит 6179a58ec7
3 изменённых файлов: 0 добавлений и 194 удалений
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9
drivers/pwm/Kconfig
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@ -164,15 +164,6 @@ config PWM_TIPWMSS
PWM submodules require PWM config space access from submodule
drivers and require common parent driver support.
config PWM_TWL6030
tristate "TWL6030 PWM support"
depends on TWL4030_CORE
help
Generic PWM framework driver for TWL6030.
To compile this driver as a module, choose M here: the module
will be called pwm-twl6030.
config PWM_TWL
tristate "TWL4030/6030 PWM support"
depends on TWL4030_CORE

1
drivers/pwm/Makefile
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@ -13,7 +13,6 @@ obj-$(CONFIG_PWM_TEGRA) += pwm-tegra.o
obj-$(CONFIG_PWM_TIECAP) += pwm-tiecap.o
obj-$(CONFIG_PWM_TIEHRPWM) += pwm-tiehrpwm.o
obj-$(CONFIG_PWM_TIPWMSS) += pwm-tipwmss.o
obj-$(CONFIG_PWM_TWL6030) += pwm-twl6030.o
obj-$(CONFIG_PWM_TWL) += pwm-twl.o
obj-$(CONFIG_PWM_TWL_LED) += pwm-twl-led.o
obj-$(CONFIG_PWM_VT8500) += pwm-vt8500.o

184
drivers/pwm/pwm-twl6030.c
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@ -1,184 +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/pwm.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 twl6030_pwm_chip {
struct pwm_chip chip;
};
static int twl6030_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
{
int ret;
u8 val;
/* 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) {
dev_err(chip->dev, "%s: Failed to configure PWM, Error %d\n",
pwm->label, ret);
return ret;
}
return 0;
}
static int twl6030_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
int duty_ns, int period_ns)
{
u8 duty_cycle = (duty_ns * PWM_CTRL1_MAX) / period_ns;
int ret;
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;
}
static int twl6030_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
{
int ret;
u8 val;
ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
if (ret < 0) {
dev_err(chip->dev, "%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) {
dev_err(chip->dev, "%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;
}
static void twl6030_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
{
int ret;
u8 val;
ret = twl_i2c_read_u8(TWL6030_MODULE_ID1, &val, LED_PWM_CTRL2);
if (ret < 0) {
dev_err(chip->dev, "%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) {
dev_err(chip->dev, "%s: Failed to disable PWM, Error %d\n",
pwm->label, ret);
}
}
static const struct pwm_ops twl6030_pwm_ops = {
.request = twl6030_pwm_request,
.config = twl6030_pwm_config,
.enable = twl6030_pwm_enable,
.disable = twl6030_pwm_disable,
};
static int twl6030_pwm_probe(struct platform_device *pdev)
{
struct twl6030_pwm_chip *twl6030;
int ret;
twl6030 = devm_kzalloc(&pdev->dev, sizeof(*twl6030), GFP_KERNEL);
if (!twl6030)
return -ENOMEM;
twl6030->chip.dev = &pdev->dev;
twl6030->chip.ops = &twl6030_pwm_ops;
twl6030->chip.base = -1;
twl6030->chip.npwm = 1;
ret = pwmchip_add(&twl6030->chip);
if (ret < 0)
return ret;
platform_set_drvdata(pdev, twl6030);
return 0;
}
static int twl6030_pwm_remove(struct platform_device *pdev)
{
struct twl6030_pwm_chip *twl6030 = platform_get_drvdata(pdev);
return pwmchip_remove(&twl6030->chip);
}
static struct platform_driver twl6030_pwm_driver = {
.driver = {
.name = "twl6030-pwm",
},
.probe = twl6030_pwm_probe,
.remove = __devexit_p(twl6030_pwm_remove),
};
module_platform_driver(twl6030_pwm_driver);
MODULE_ALIAS("platform:twl6030-pwm");
MODULE_LICENSE("GPL");