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regulator: rk29-pwm-regulator: fix warning: initialization from incompatible pointer type
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黄涛
@@ -1,52 +1,52 @@
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/* drivers/regulator/rk29-pwm-regulator.c
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*
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* Copyright (C) 2010 ROCKCHIP, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/*******************************************************************/
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/* COPYRIGHT (C) ROCK-CHIPS FUZHOU . ALL RIGHTS RESERVED. */
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/*******************************************************************
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*
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* Copyright (C) 2010 ROCKCHIP, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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/*******************************************************************/
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/* COPYRIGHT (C) ROCK-CHIPS FUZHOU . ALL RIGHTS RESERVED. */
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/*******************************************************************
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FILE : rk29-pwm-regulator.c
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DESC : rk29 pwm regulator driver
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AUTHOR : hxy
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DATE : 2010-12-20
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NOTES :
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$LOG: GPIO.C,V $
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REVISION 0.01
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********************************************************************/
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#include <linux/bug.h>
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NOTES :
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$LOG: GPIO.C,V $
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REVISION 0.01
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********************************************************************/
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#include <linux/bug.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/kernel.h>
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#include <linux/clk.h>
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#include <asm/io.h>
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#include <linux/delay.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/rk29-pwm-regulator.h>
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#include <mach/iomux.h>
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#include <linux/gpio.h>
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#if 0
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#define DBG(x...) printk(KERN_INFO x)
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#else
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#define DBG(x...)
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#endif
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#define PWM_VCORE_120 40
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#define PWM_VCORE_125 32
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#if 0
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#define DBG(x...) printk(KERN_INFO x)
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#else
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#define DBG(x...)
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#endif
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#define PWM_VCORE_120 40
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#define PWM_VCORE_125 32
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#define PWM_VCORE_130 21
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#define PWM_VCORE_135 10
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#define PWM_VCORE_140 0
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@@ -64,53 +64,53 @@ static struct clk *pwm_clk;
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static int pwm_set_rate(struct pwm_platform_data *pdata,int nHz,u32 rate)
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{
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u32 divh,divTotal;
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int id = pdata->pwm_id;
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unsigned long clkrate;
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u32 divh,divTotal;
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int id = pdata->pwm_id;
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unsigned long clkrate;
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clkrate = clk_get_rate(pwm_clk);
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if ( id >3 || id <0 )
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return -1;
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clkrate = clk_get_rate(pwm_clk);
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if(rate == 0)
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{
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// iomux pwm2 to gpio2_a[3]
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rk29_mux_api_set(pdata->pwm_iomux_name, pdata->pwm_iomux_gpio);
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// set gpio to low level
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gpio_set_value(pdata->pwm_gpio,GPIO_LOW);
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if ( id >3 || id <0 )
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return -1;
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if(rate == 0)
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{
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// iomux pwm2 to gpio2_a[3]
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rk29_mux_api_set(pdata->pwm_iomux_name, pdata->pwm_iomux_gpio);
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// set gpio to low level
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gpio_set_value(pdata->pwm_gpio,GPIO_LOW);
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}
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else if (rate <= 100)
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{
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// iomux pwm2
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rk29_mux_api_set(pdata->pwm_iomux_name, pdata->pwm_iomux_pwm);
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pwm_write_reg(id,PWM_REG_CTRL, PWM_DIV|PWM_RESET);
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divh = clkrate / nHz;
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divh = divh >> (1+(PWM_DIV>>9));
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pwm_write_reg(id,PWM_REG_LRC,(divh == 0)?1:divh);
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divTotal =pwm_read_reg(id,PWM_REG_LRC);
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divh = divTotal*rate/100;
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pwm_write_reg(id, PWM_REG_HRC, divh?divh:1);
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pwm_write_reg(id,PWM_REG_CNTR,0);
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pwm_write_reg(id, PWM_REG_CTRL,pwm_read_reg(id,PWM_REG_CTRL)|PWM_DIV|PWM_ENABLE|PWM_TimeEN);
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else if (rate <= 100)
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{
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// iomux pwm2
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rk29_mux_api_set(pdata->pwm_iomux_name, pdata->pwm_iomux_pwm);
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pwm_write_reg(id,PWM_REG_CTRL, PWM_DIV|PWM_RESET);
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divh = clkrate / nHz;
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divh = divh >> (1+(PWM_DIV>>9));
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pwm_write_reg(id,PWM_REG_LRC,(divh == 0)?1:divh);
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divTotal =pwm_read_reg(id,PWM_REG_LRC);
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divh = divTotal*rate/100;
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pwm_write_reg(id, PWM_REG_HRC, divh?divh:1);
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pwm_write_reg(id,PWM_REG_CNTR,0);
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pwm_write_reg(id, PWM_REG_CTRL,pwm_read_reg(id,PWM_REG_CTRL)|PWM_DIV|PWM_ENABLE|PWM_TimeEN);
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}
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else
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{
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return -1;
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else
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{
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return -1;
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}
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usleep_range(10*1000, 10*1000);
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return (0);
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return (0);
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}
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static int pwm_regulator_list_voltage(struct regulator_dev *dev,unsigned int index)
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{
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DBG("Enter %s, index =%d\n",__FUNCTION__,index);
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if (index < sizeof(pwm_voltage_map)/sizeof(int))
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DBG("Enter %s, index =%d\n",__FUNCTION__,index);
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if (index < sizeof(pwm_voltage_map)/sizeof(int))
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return pwm_voltage_map[index];
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else
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return -1;
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@@ -120,67 +120,76 @@ static int pwm_regulator_is_enabled(struct regulator_dev *dev)
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{
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DBG("Enter %s\n",__FUNCTION__);
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return 0;
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}
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}
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static int pwm_regulator_enable(struct regulator_dev *dev)
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{
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DBG("Enter %s\n",__FUNCTION__);
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return 0;
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}
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}
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static int pwm_regulator_disable(struct regulator_dev *dev)
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{
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DBG("Enter %s\n",__FUNCTION__);
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return 0;
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}
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}
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static int pwm_regulator_get_voltage(struct regulator_dev *dev)
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{
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struct pwm_platform_data *pdata = rdev_get_drvdata(dev);
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struct pwm_platform_data *pdata = rdev_get_drvdata(dev);
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DBG("Enter %s\n",__FUNCTION__);
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return (pdata->pwm_voltage*1000);
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}
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}
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38))
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static int pwm_regulator_set_voltage(struct regulator_dev *dev,
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int min_uV, int max_uV)
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int min_uV, int max_uV, unsigned *selector)
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#else
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static int pwm_regulator_set_voltage(struct regulator_dev *dev,
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int min_uV, int max_uV)
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#endif
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{
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struct pwm_platform_data *pdata = rdev_get_drvdata(dev);
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const int *voltage_map = pwm_voltage_map;
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int min_mV = min_uV /1000, max_mA = max_uV / 1000;
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const int *voltage_map = pwm_voltage_map;
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int min_mV = min_uV /1000, max_mA = max_uV / 1000;
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u32 size = sizeof(pwm_voltage_map)/sizeof(int), i, vol,pwm_value;
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DBG("%s: min_uV = %d, max_uV = %d\n",__FUNCTION__, min_uV,max_uV);
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if (min_mV < voltage_map[0] ||max_mA > voltage_map[size-1])
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return -EINVAL;
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return -EINVAL;
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for (i = 0; i < size; i++)
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{
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if (voltage_map[i] >= min_mV)
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break;
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break;
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}
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vol = voltage_map[i];
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pdata->pwm_voltage = vol;
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vol = voltage_map[i];
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pdata->pwm_voltage = vol;
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// VDD12 = 1.4 - 0.476*D , ÆäÖÐDΪPWMÕ¼¿Õ±È,
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pwm_value = 100*(1400-vol)/476; // pwm_value %
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if (pwm_set_rate(pdata,1000*1000,pwm_value)!=0)
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return -1;
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return 0;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38))
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*selector = i;
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#endif
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return 0;
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}
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}
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static struct regulator_ops pwm_voltage_ops = {
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.list_voltage = pwm_regulator_list_voltage,
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.set_voltage =pwm_regulator_set_voltage,
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@@ -189,39 +198,39 @@ static struct regulator_ops pwm_voltage_ops = {
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.disable = pwm_regulator_disable,
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.is_enabled = pwm_regulator_is_enabled,
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};
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static struct regulator_desc pwm_regulator= {
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.name = "pwm-regulator",
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.ops = &pwm_voltage_ops,
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.type = REGULATOR_VOLTAGE,
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.name = "pwm-regulator",
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.ops = &pwm_voltage_ops,
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.type = REGULATOR_VOLTAGE,
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};
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static int __devinit pwm_regulator_probe(struct platform_device *pdev)
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{
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struct pwm_platform_data *pdata = pdev->dev.platform_data;
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struct regulator_dev *rdev;
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int ret ;
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if (!pdata)
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return -ENODEV;
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if (!pdata->pwm_voltage)
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pdata->pwm_voltage = 1200; // default 1.2v
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if (!pdata)
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return -ENODEV;
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if (!pdata->pwm_voltage)
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pdata->pwm_voltage = 1200; // default 1.2v
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rdev = regulator_register(&pwm_regulator, &pdev->dev,
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pdata->init_data, pdata);
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pdata->init_data, pdata);
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if (IS_ERR(rdev)) {
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dev_dbg(&pdev->dev, "couldn't register regulator\n");
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dev_dbg(&pdev->dev, "couldn't register regulator\n");
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return PTR_ERR(rdev);
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}
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ret = gpio_request(pdata->pwm_gpio,"pwm");
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ret = gpio_request(pdata->pwm_gpio,"pwm");
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if (ret) {
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dev_err(&pdev->dev,"failed to request pwm gpio\n");
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goto err_gpio;
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}
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dev_err(&pdev->dev,"failed to request pwm gpio\n");
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goto err_gpio;
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}
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pwm_clk = clk_get(NULL, "pwm");
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clk_enable(pwm_clk);
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@@ -232,14 +241,14 @@ static int __devinit pwm_regulator_probe(struct platform_device *pdev)
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return 0;
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err_gpio:
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gpio_free(pdata->pwm_gpio);
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return ret;
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}
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}
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static int __devexit pwm_regulator_remove(struct platform_device *pdev)
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{
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struct pwm_platform_data *pdata = pdev->dev.platform_data;
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@@ -257,23 +266,23 @@ static struct platform_driver pwm_regulator_driver = {
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},
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.remove = __devexit_p(pwm_regulator_remove),
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};
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static int __init pwm_regulator_module_init(void)
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{
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{
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return platform_driver_probe(&pwm_regulator_driver, pwm_regulator_probe);
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}
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}
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static void __exit pwm_regulator_module_exit(void)
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{
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{
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platform_driver_unregister(&pwm_regulator_driver);
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}
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}
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subsys_initcall(pwm_regulator_module_init);
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module_exit(pwm_regulator_module_exit);
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MODULE_LICENSE("GPL");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("hxy <hxy@rock-chips.com>");
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MODULE_DESCRIPTION("k29 pwm change driver");
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