Merge branch 'next-s3c-hwmon' into next-s3c
This commit is contained in:
Ben Dooks
Коммит
63c949ea1d
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|
@ -45,6 +45,7 @@
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#include <mach/regs-mem.h>
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#include <mach/regs-lcd.h>
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#include <plat/hwmon.h>
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#include <plat/nand.h>
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#include <plat/iic.h>
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#include <mach/fb.h>
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@ -547,7 +548,35 @@ static struct i2c_board_info bast_i2c_devs[] __initdata = {
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},
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};
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static struct s3c_hwmon_pdata bast_hwmon_info = {
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/* LCD contrast (0-6.6V) */
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.in[0] = &(struct s3c_hwmon_chcfg) {
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.name = "lcd-contrast",
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.mult = 3300,
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.div = 512,
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},
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/* LED current feedback */
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.in[1] = &(struct s3c_hwmon_chcfg) {
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.name = "led-feedback",
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.mult = 3300,
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.div = 1024,
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},
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/* LCD feedback (0-6.6V) */
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.in[2] = &(struct s3c_hwmon_chcfg) {
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.name = "lcd-feedback",
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.mult = 3300,
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.div = 512,
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},
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/* Vcore (1.8-2.0V), Vref 3.3V */
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.in[3] = &(struct s3c_hwmon_chcfg) {
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.name = "vcore",
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.mult = 3300,
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.div = 1024,
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},
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};
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/* Standard BAST devices */
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// cat /sys/devices/platform/s3c24xx-adc/s3c-hwmon/in_0
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static struct platform_device *bast_devices[] __initdata = {
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&s3c_device_usb,
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@ -556,6 +585,8 @@ static struct platform_device *bast_devices[] __initdata = {
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&s3c_device_i2c0,
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&s3c_device_rtc,
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&s3c_device_nand,
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&s3c_device_adc,
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&s3c_device_hwmon,
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&bast_device_dm9k,
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&bast_device_asix,
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&bast_device_axpp,
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@ -588,6 +619,7 @@ static void __init bast_map_io(void)
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s3c24xx_register_clocks(bast_clocks, ARRAY_SIZE(bast_clocks));
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s3c_device_nand.dev.platform_data = &bast_nand_info;
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s3c_device_hwmon.dev.platform_data = &bast_hwmon_info;
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s3c24xx_init_io(bast_iodesc, ARRAY_SIZE(bast_iodesc));
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s3c24xx_init_clocks(0);
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|
|
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|
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@ -19,10 +19,14 @@ struct s3c_adc_client;
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extern int s3c_adc_start(struct s3c_adc_client *client,
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unsigned int channel, unsigned int nr_samples);
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extern int s3c_adc_read(struct s3c_adc_client *client, unsigned int ch);
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extern struct s3c_adc_client *
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s3c_adc_register(struct platform_device *pdev,
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void (*select)(unsigned selected),
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void (*conv)(unsigned d0, unsigned d1,
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void (*select)(struct s3c_adc_client *client,
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unsigned selected),
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void (*conv)(struct s3c_adc_client *client,
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unsigned d0, unsigned d1,
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unsigned *samples_left),
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unsigned int is_ts);
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|
|
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|
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@ -46,6 +46,8 @@ extern struct platform_device s3c_device_hsmmc2;
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extern struct platform_device s3c_device_spi0;
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extern struct platform_device s3c_device_spi1;
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extern struct platform_device s3c_device_hwmon;
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extern struct platform_device s3c_device_nand;
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extern struct platform_device s3c_device_usbgadget;
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|
|
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|
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@ -0,0 +1,41 @@
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/* linux/arch/arm/plat-s3c/include/plat/hwmon.h
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*
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* Copyright 2005 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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* http://armlinux.simtec.co.uk/
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*
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* S3C - HWMon interface for ADC
|
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*
|
||||
* 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.
|
||||
*/
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|
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#ifndef __ASM_ARCH_ADC_HWMON_H
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#define __ASM_ARCH_ADC_HWMON_H __FILE__
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/**
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* s3c_hwmon_chcfg - channel configuration
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* @name: The name to give this channel.
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* @mult: Multiply the ADC value read by this.
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* @div: Divide the value from the ADC by this.
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*
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* The value read from the ADC is converted to a value that
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* hwmon expects (mV) by result = (value_read * @mult) / @div.
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*/
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struct s3c_hwmon_chcfg {
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const char *name;
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unsigned int mult;
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unsigned int div;
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};
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/**
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* s3c_hwmon_pdata - HWMON platform data
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* @in: One configuration for each possible channel used.
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*/
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struct s3c_hwmon_pdata {
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struct s3c_hwmon_chcfg *in[8];
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};
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#endif /* __ASM_ARCH_ADC_HWMON_H */
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|
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@ -39,13 +39,16 @@
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struct s3c_adc_client {
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struct platform_device *pdev;
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struct list_head pend;
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wait_queue_head_t *wait;
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unsigned int nr_samples;
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int result;
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unsigned char is_ts;
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unsigned char channel;
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void (*select_cb)(unsigned selected);
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void (*convert_cb)(unsigned val1, unsigned val2,
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void (*select_cb)(struct s3c_adc_client *c, unsigned selected);
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void (*convert_cb)(struct s3c_adc_client *c,
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unsigned val1, unsigned val2,
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unsigned *samples_left);
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};
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@ -81,7 +84,7 @@ static inline void s3c_adc_select(struct adc_device *adc,
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{
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unsigned con = readl(adc->regs + S3C2410_ADCCON);
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client->select_cb(1);
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client->select_cb(client, 1);
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con &= ~S3C2410_ADCCON_MUXMASK;
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con &= ~S3C2410_ADCCON_STDBM;
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@ -153,25 +156,61 @@ int s3c_adc_start(struct s3c_adc_client *client,
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}
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EXPORT_SYMBOL_GPL(s3c_adc_start);
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static void s3c_adc_default_select(unsigned select)
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static void s3c_convert_done(struct s3c_adc_client *client,
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unsigned v, unsigned u, unsigned *left)
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{
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client->result = v;
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wake_up(client->wait);
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}
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int s3c_adc_read(struct s3c_adc_client *client, unsigned int ch)
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{
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DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wake);
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int ret;
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client->convert_cb = s3c_convert_done;
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client->wait = &wake;
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client->result = -1;
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ret = s3c_adc_start(client, ch, 1);
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if (ret < 0)
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goto err;
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ret = wait_event_timeout(wake, client->result >= 0, HZ / 2);
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if (client->result < 0) {
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ret = -ETIMEDOUT;
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goto err;
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}
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client->convert_cb = NULL;
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return client->result;
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err:
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return ret;
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}
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EXPORT_SYMBOL_GPL(s3c_adc_convert);
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static void s3c_adc_default_select(struct s3c_adc_client *client,
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unsigned select)
|
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{
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}
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struct s3c_adc_client *s3c_adc_register(struct platform_device *pdev,
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void (*select)(unsigned int selected),
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void (*conv)(unsigned d0, unsigned d1,
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void (*select)(struct s3c_adc_client *client,
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unsigned int selected),
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void (*conv)(struct s3c_adc_client *client,
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unsigned d0, unsigned d1,
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unsigned *samples_left),
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unsigned int is_ts)
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{
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struct s3c_adc_client *client;
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WARN_ON(!pdev);
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WARN_ON(!conv);
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if (!select)
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select = s3c_adc_default_select;
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if (!conv || !pdev)
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if (!pdev)
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return ERR_PTR(-EINVAL);
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client = kzalloc(sizeof(struct s3c_adc_client), GFP_KERNEL);
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@ -230,16 +269,19 @@ static irqreturn_t s3c_adc_irq(int irq, void *pw)
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adc_dbg(adc, "read %d: 0x%04x, 0x%04x\n", client->nr_samples, data0, data1);
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client->nr_samples--;
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(client->convert_cb)(data0 & 0x3ff, data1 & 0x3ff, &client->nr_samples);
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if (client->convert_cb)
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(client->convert_cb)(client, data0 & 0x3ff, data1 & 0x3ff,
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&client->nr_samples);
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if (client->nr_samples > 0) {
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/* fire another conversion for this */
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client->select_cb(1);
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client->select_cb(client, 1);
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s3c_adc_convert(adc);
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} else {
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local_irq_save(flags);
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(client->select_cb)(0);
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(client->select_cb)(client, 0);
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adc->cur = NULL;
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s3c_adc_try(adc);
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|
|
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@ -348,7 +348,7 @@ struct platform_device s3c_device_adc = {
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/* HWMON */
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struct platform_device s3c_device_hwmon = {
|
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.name = "s3c24xx-hwmon",
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.name = "s3c-hwmon",
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.id = -1,
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.dev.parent = &s3c_device_adc.dev,
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};
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|
|
|
|||
|
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@ -702,6 +702,23 @@ config SENSORS_SHT15
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This driver can also be built as a module. If so, the module
|
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will be called sht15.
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|
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config SENSORS_S3C
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tristate "S3C24XX/S3C64XX Inbuilt ADC"
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depends on ARCH_S3C2410 || ARCH_S3C64XX
|
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help
|
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If you say yes here you get support for the on-board ADCs of
|
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the Samsung S3C24XX or S3C64XX series of SoC
|
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|
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This driver can also be built as a module. If so, the module
|
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will be called s3c-hwmo.
|
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|
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config SENSORS_S3C_RAW
|
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bool "Include raw channel attributes in sysfs"
|
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depends on SENSORS_S3C
|
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help
|
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Say Y here if you want to include raw copies of all the ADC
|
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channels in sysfs.
|
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|
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config SENSORS_SIS5595
|
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tristate "Silicon Integrated Systems Corp. SiS5595"
|
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depends on PCI
|
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|
|
|
|||
|
|
@ -76,6 +76,7 @@ obj-$(CONFIG_SENSORS_MAX6650) += max6650.o
|
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obj-$(CONFIG_SENSORS_PC87360) += pc87360.o
|
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obj-$(CONFIG_SENSORS_PC87427) += pc87427.o
|
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obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
|
||||
obj-$(CONFIG_SENSORS_S3C) += s3c-hwmon.o
|
||||
obj-$(CONFIG_SENSORS_SHT15) += sht15.o
|
||||
obj-$(CONFIG_SENSORS_SIS5595) += sis5595.o
|
||||
obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,405 @@
|
|||
/* linux/drivers/hwmon/s3c-hwmon.c
|
||||
*
|
||||
* Copyright (C) 2005, 2008, 2009 Simtec Electronics
|
||||
* http://armlinux.simtec.co.uk/
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* S3C24XX/S3C64XX ADC hwmon support
|
||||
*
|
||||
* 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, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
#include <linux/hwmon.h>
|
||||
#include <linux/hwmon-sysfs.h>
|
||||
|
||||
#include <plat/adc.h>
|
||||
#include <plat/hwmon.h>
|
||||
|
||||
struct s3c_hwmon_attr {
|
||||
struct sensor_device_attribute in;
|
||||
struct sensor_device_attribute label;
|
||||
char in_name[12];
|
||||
char label_name[12];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct s3c_hwmon - ADC hwmon client information
|
||||
* @lock: Access lock to serialise the conversions.
|
||||
* @client: The client we registered with the S3C ADC core.
|
||||
* @hwmon_dev: The hwmon device we created.
|
||||
* @attr: The holders for the channel attributes.
|
||||
*/
|
||||
struct s3c_hwmon {
|
||||
struct semaphore lock;
|
||||
struct s3c_adc_client *client;
|
||||
struct device *hwmon_dev;
|
||||
|
||||
struct s3c_hwmon_attr attrs[8];
|
||||
};
|
||||
|
||||
/**
|
||||
* s3c_hwmon_read_ch - read a value from a given adc channel.
|
||||
* @dev: The device.
|
||||
* @hwmon: Our state.
|
||||
* @channel: The channel we're reading from.
|
||||
*
|
||||
* Read a value from the @channel with the proper locking and sleep until
|
||||
* either the read completes or we timeout awaiting the ADC core to get
|
||||
* back to us.
|
||||
*/
|
||||
static int s3c_hwmon_read_ch(struct device *dev,
|
||||
struct s3c_hwmon *hwmon, int channel)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = down_interruptible(&hwmon->lock);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
dev_dbg(dev, "reading channel %d\n", channel);
|
||||
|
||||
ret = s3c_adc_read(hwmon->client, channel);
|
||||
up(&hwmon->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SENSORS_S3C_RAW
|
||||
/**
|
||||
* s3c_hwmon_show_raw - show a conversion from the raw channel number.
|
||||
* @dev: The device that the attribute belongs to.
|
||||
* @attr: The attribute being read.
|
||||
* @buf: The result buffer.
|
||||
*
|
||||
* This show deals with the raw attribute, registered for each possible
|
||||
* ADC channel. This does a conversion and returns the raw (un-scaled)
|
||||
* value returned from the hardware.
|
||||
*/
|
||||
static ssize_t s3c_hwmon_show_raw(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct s3c_hwmon *adc = platform_get_drvdata(to_platform_device(dev));
|
||||
struct sensor_device_attribute *sa = to_sensor_dev_attr(attr);
|
||||
int ret;
|
||||
|
||||
ret = s3c_hwmon_read_ch(dev, adc, sa->index);
|
||||
|
||||
return (ret < 0) ? ret : snprintf(buf, PAGE_SIZE, "%d\n", ret);
|
||||
}
|
||||
|
||||
#define DEF_ADC_ATTR(x) \
|
||||
static SENSOR_DEVICE_ATTR(adc##x##_raw, S_IRUGO, s3c_hwmon_show_raw, NULL, x)
|
||||
|
||||
DEF_ADC_ATTR(0);
|
||||
DEF_ADC_ATTR(1);
|
||||
DEF_ADC_ATTR(2);
|
||||
DEF_ADC_ATTR(3);
|
||||
DEF_ADC_ATTR(4);
|
||||
DEF_ADC_ATTR(5);
|
||||
DEF_ADC_ATTR(6);
|
||||
DEF_ADC_ATTR(7);
|
||||
|
||||
static struct attribute *s3c_hwmon_attrs[9] = {
|
||||
&sensor_dev_attr_adc0_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc1_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc2_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc3_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc4_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc5_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc6_raw.dev_attr.attr,
|
||||
&sensor_dev_attr_adc7_raw.dev_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static struct attribute_group s3c_hwmon_attrgroup = {
|
||||
.attrs = s3c_hwmon_attrs,
|
||||
};
|
||||
|
||||
static inline int s3c_hwmon_add_raw(struct device *dev)
|
||||
{
|
||||
return sysfs_create_group(&dev->kobj, &s3c_hwmon_attrgroup);
|
||||
}
|
||||
|
||||
static inline void s3c_hwmon_remove_raw(struct device *dev)
|
||||
{
|
||||
sysfs_remove_group(&dev->kobj, &s3c_hwmon_attrgroup);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static inline int s3c_hwmon_add_raw(struct device *dev) { return 0; }
|
||||
static inline void s3c_hwmon_remove_raw(struct device *dev) { }
|
||||
|
||||
#endif /* CONFIG_SENSORS_S3C_RAW */
|
||||
|
||||
/**
|
||||
* s3c_hwmon_ch_show - show value of a given channel
|
||||
* @dev: The device that the attribute belongs to.
|
||||
* @attr: The attribute being read.
|
||||
* @buf: The result buffer.
|
||||
*
|
||||
* Read a value from the ADC and scale it before returning it to the
|
||||
* caller. The scale factor is gained from the channel configuration
|
||||
* passed via the platform data when the device was registered.
|
||||
*/
|
||||
static ssize_t s3c_hwmon_ch_show(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct sensor_device_attribute *sen_attr = to_sensor_dev_attr(attr);
|
||||
struct s3c_hwmon *hwmon = platform_get_drvdata(to_platform_device(dev));
|
||||
struct s3c_hwmon_pdata *pdata = dev->platform_data;
|
||||
struct s3c_hwmon_chcfg *cfg;
|
||||
int ret;
|
||||
|
||||
cfg = pdata->in[sen_attr->index];
|
||||
|
||||
ret = s3c_hwmon_read_ch(dev, hwmon, sen_attr->index);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
ret *= cfg->mult;
|
||||
ret = DIV_ROUND_CLOSEST(ret, cfg->div);
|
||||
|
||||
return snprintf(buf, PAGE_SIZE, "%d\n", ret);
|
||||
}
|
||||
|
||||
/**
|
||||
* s3c_hwmon_label_show - show label name of the given channel.
|
||||
* @dev: The device that the attribute belongs to.
|
||||
* @attr: The attribute being read.
|
||||
* @buf: The result buffer.
|
||||
*
|
||||
* Return the label name of a given channel
|
||||
*/
|
||||
static ssize_t s3c_hwmon_label_show(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct sensor_device_attribute *sen_attr = to_sensor_dev_attr(attr);
|
||||
struct s3c_hwmon_pdata *pdata = dev->platform_data;
|
||||
struct s3c_hwmon_chcfg *cfg;
|
||||
|
||||
cfg = pdata->in[sen_attr->index];
|
||||
|
||||
return snprintf(buf, PAGE_SIZE, "%s\n", cfg->name);
|
||||
}
|
||||
|
||||
/**
|
||||
* s3c_hwmon_create_attr - create hwmon attribute for given channel.
|
||||
* @dev: The device to create the attribute on.
|
||||
* @cfg: The channel configuration passed from the platform data.
|
||||
* @channel: The ADC channel number to process.
|
||||
*
|
||||
* Create the scaled attribute for use with hwmon from the specified
|
||||
* platform data in @pdata. The sysfs entry is handled by the routine
|
||||
* s3c_hwmon_ch_show().
|
||||
*
|
||||
* The attribute name is taken from the configuration data if present
|
||||
* otherwise the name is taken by concatenating in_ with the channel
|
||||
* number.
|
||||
*/
|
||||
static int s3c_hwmon_create_attr(struct device *dev,
|
||||
struct s3c_hwmon_chcfg *cfg,
|
||||
struct s3c_hwmon_attr *attrs,
|
||||
int channel)
|
||||
{
|
||||
struct sensor_device_attribute *attr;
|
||||
int ret;
|
||||
|
||||
snprintf(attrs->in_name, sizeof(attrs->in_name), "in%d_input", channel);
|
||||
|
||||
attr = &attrs->in;
|
||||
attr->index = channel;
|
||||
attr->dev_attr.attr.name = attrs->in_name;
|
||||
attr->dev_attr.attr.mode = S_IRUGO;
|
||||
attr->dev_attr.attr.owner = THIS_MODULE;
|
||||
attr->dev_attr.show = s3c_hwmon_ch_show;
|
||||
|
||||
ret = device_create_file(dev, &attr->dev_attr);
|
||||
if (ret < 0) {
|
||||
dev_err(dev, "failed to create input attribute\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* if this has a name, add a label */
|
||||
if (cfg->name) {
|
||||
snprintf(attrs->label_name, sizeof(attrs->label_name),
|
||||
"in%d_label", channel);
|
||||
|
||||
attr = &attrs->label;
|
||||
attr->index = channel;
|
||||
attr->dev_attr.attr.name = attrs->label_name;
|
||||
attr->dev_attr.attr.mode = S_IRUGO;
|
||||
attr->dev_attr.attr.owner = THIS_MODULE;
|
||||
attr->dev_attr.show = s3c_hwmon_label_show;
|
||||
|
||||
ret = device_create_file(dev, &attr->dev_attr);
|
||||
if (ret < 0) {
|
||||
device_remove_file(dev, &attrs->in.dev_attr);
|
||||
dev_err(dev, "failed to create label attribute\n");
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void s3c_hwmon_remove_attr(struct device *dev,
|
||||
struct s3c_hwmon_attr *attrs)
|
||||
{
|
||||
device_remove_file(dev, &attrs->in.dev_attr);
|
||||
device_remove_file(dev, &attrs->label.dev_attr);
|
||||
}
|
||||
|
||||
/**
|
||||
* s3c_hwmon_probe - device probe entry.
|
||||
* @dev: The device being probed.
|
||||
*/
|
||||
static int __devinit s3c_hwmon_probe(struct platform_device *dev)
|
||||
{
|
||||
struct s3c_hwmon_pdata *pdata = dev->dev.platform_data;
|
||||
struct s3c_hwmon *hwmon;
|
||||
int ret = 0;
|
||||
int i;
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(&dev->dev, "no platform data supplied\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
hwmon = kzalloc(sizeof(struct s3c_hwmon), GFP_KERNEL);
|
||||
if (hwmon == NULL) {
|
||||
dev_err(&dev->dev, "no memory\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
platform_set_drvdata(dev, hwmon);
|
||||
|
||||
init_MUTEX(&hwmon->lock);
|
||||
|
||||
/* Register with the core ADC driver. */
|
||||
|
||||
hwmon->client = s3c_adc_register(dev, NULL, NULL, 0);
|
||||
if (IS_ERR(hwmon->client)) {
|
||||
dev_err(&dev->dev, "cannot register adc\n");
|
||||
ret = PTR_ERR(hwmon->client);
|
||||
goto err_mem;
|
||||
}
|
||||
|
||||
/* add attributes for our adc devices. */
|
||||
|
||||
ret = s3c_hwmon_add_raw(&dev->dev);
|
||||
if (ret)
|
||||
goto err_registered;
|
||||
|
||||
/* register with the hwmon core */
|
||||
|
||||
hwmon->hwmon_dev = hwmon_device_register(&dev->dev);
|
||||
if (IS_ERR(hwmon->hwmon_dev)) {
|
||||
dev_err(&dev->dev, "error registering with hwmon\n");
|
||||
ret = PTR_ERR(hwmon->hwmon_dev);
|
||||
goto err_raw_attribute;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(pdata->in); i++) {
|
||||
if (!pdata->in[i])
|
||||
continue;
|
||||
|
||||
if (pdata->in[i]->mult >= 0x10000)
|
||||
dev_warn(&dev->dev,
|
||||
"channel %d multiplier too large\n",
|
||||
i);
|
||||
|
||||
ret = s3c_hwmon_create_attr(&dev->dev, pdata->in[i],
|
||||
&hwmon->attrs[i], i);
|
||||
if (ret) {
|
||||
dev_err(&dev->dev,
|
||||
"error creating channel %d\n", i);
|
||||
|
||||
for (i--; i >= 0; i--)
|
||||
s3c_hwmon_remove_attr(&dev->dev,
|
||||
&hwmon->attrs[i]);
|
||||
|
||||
goto err_hwmon_register;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_hwmon_register:
|
||||
hwmon_device_unregister(hwmon->hwmon_dev);
|
||||
|
||||
err_raw_attribute:
|
||||
s3c_hwmon_remove_raw(&dev->dev);
|
||||
|
||||
err_registered:
|
||||
s3c_adc_release(hwmon->client);
|
||||
|
||||
err_mem:
|
||||
kfree(hwmon);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit s3c_hwmon_remove(struct platform_device *dev)
|
||||
{
|
||||
struct s3c_hwmon *hwmon = platform_get_drvdata(dev);
|
||||
int i;
|
||||
|
||||
s3c_hwmon_remove_raw(&dev->dev);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(hwmon->attrs); i++)
|
||||
s3c_hwmon_remove_attr(&dev->dev, &hwmon->attrs[i]);
|
||||
|
||||
hwmon_device_unregister(hwmon->hwmon_dev);
|
||||
s3c_adc_release(hwmon->client);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver s3c_hwmon_driver = {
|
||||
.driver = {
|
||||
.name = "s3c-hwmon",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = s3c_hwmon_probe,
|
||||
.remove = __devexit_p(s3c_hwmon_remove),
|
||||
};
|
||||
|
||||
static int __init s3c_hwmon_init(void)
|
||||
{
|
||||
return platform_driver_register(&s3c_hwmon_driver);
|
||||
}
|
||||
|
||||
static void __exit s3c_hwmon_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&s3c_hwmon_driver);
|
||||
}
|
||||
|
||||
module_init(s3c_hwmon_init);
|
||||
module_exit(s3c_hwmon_exit);
|
||||
|
||||
MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
|
||||
MODULE_DESCRIPTION("S3C ADC HWMon driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_ALIAS("platform:s3c-hwmon");
|
||||
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