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-rw-r--r--target/linux/s3c24xx/patches-2.6.24/1291-gta03-pca9632.patch.patch650
1 files changed, 650 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1291-gta03-pca9632.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1291-gta03-pca9632.patch.patch
new file mode 100644
index 0000000000..cf4df2a557
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.24/1291-gta03-pca9632.patch.patch
@@ -0,0 +1,650 @@
+From f6b1f49300a24c329f5d1049031f711c6268be95 Mon Sep 17 00:00:00 2001
+From: Matt Hsu <matt_hsu@openmoko.org>
+Date: Thu, 18 Sep 2008 11:14:50 +0100
+Subject: [PATCH] gta03-pca9632.patch
+
+ - pca9632 is a LED driver which will be adopted in gta03.
+
+Signed-off-by: Matt Hsu <matt_hsu@openmoko.org>
+---
+ drivers/i2c/chips/Kconfig | 9 +
+ drivers/i2c/chips/Makefile | 1 +
+ drivers/i2c/chips/pca9632.c | 551 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/i2c/chips/pca9632.h | 24 ++
+ include/linux/i2c-id.h | 1 +
+ 5 files changed, 586 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/i2c/chips/pca9632.c
+ create mode 100644 drivers/i2c/chips/pca9632.h
+
+diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
+index 1d6d36f..9af3c62 100644
+--- a/drivers/i2c/chips/Kconfig
++++ b/drivers/i2c/chips/Kconfig
+@@ -193,4 +193,13 @@ config SENSORS_TSL256X
+ This driver can also be built as a module. If so, the module
+ will be called tsl256x.
+
++config PCA9632
++ tristate "Philips/NXP PCA9632 low power LED driver"
++ depends on I2C
++ help
++ If you say yes here you get support for the Philips/NXP PCA9632
++ LED driver.
++
++ This driver can also be built as a module. If so, the module
++ will be called pca9632.
+ endmenu
+diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile
+index 4b6ba04..67cd1e5 100644
+--- a/drivers/i2c/chips/Makefile
++++ b/drivers/i2c/chips/Makefile
+@@ -18,6 +18,7 @@ obj-$(CONFIG_TPS65010) += tps65010.o
+ obj-$(CONFIG_MENELAUS) += menelaus.o
+ obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o
+ obj-$(CONFIG_SENSORS_TSL256X) += tsl256x.o
++obj-$(CONFIG_PCA9632) += pca9632.o
+
+ ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
+ EXTRA_CFLAGS += -DDEBUG
+diff --git a/drivers/i2c/chips/pca9632.c b/drivers/i2c/chips/pca9632.c
+new file mode 100644
+index 0000000..deda6a1
+--- /dev/null
++++ b/drivers/i2c/chips/pca9632.c
+@@ -0,0 +1,551 @@
++/*
++ * Philips/NXP PCA9632 low power LED driver.
++ * Copyright (C) 2008 Matt Hsu <matt_hsu@openmoko.org>
++ *
++ * low_level implementation are based on pcf50606 driver
++ *
++ * 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; version 2 of the License.
++ *
++ * TODO:
++ * - attach ledclass??
++ * - add platform data
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/i2c.h>
++#include <linux/platform_device.h>
++
++#include "pca9632.h"
++
++/* Addresses to scan */
++static unsigned short normal_i2c[] = { 0x62, I2C_CLIENT_END };
++
++/* Insmod parameters */
++I2C_CLIENT_INSMOD_1(pca9632);
++
++enum pca9632_pwr_state {
++ PCA9632_NORMAL,
++ PCA9632_SLEEP,
++};
++
++enum pca9632_led_output {
++ PCA9632_OFF,
++ PCA9632_ON,
++ PCA9632_CTRL_BY_PWM,
++ PCA9632_CTRL_BY_PWM_GRPPWM,
++};
++
++static const char *led_output_name[] = {
++ [PCA9632_OFF] = "off",
++ [PCA9632_ON] = "fully-on",
++ [PCA9632_CTRL_BY_PWM] = "ctrl-by-pwm",
++ [PCA9632_CTRL_BY_PWM_GRPPWM] = "ctrl-by-pwm-grppwm",
++};
++
++struct pca9632_data {
++ struct i2c_client client;
++ struct mutex lock;
++};
++
++static struct i2c_driver pca9632_driver;
++static struct platform_device *pca9632_pdev;
++
++static int pca9632_attach_adapter(struct i2c_adapter *adapter);
++static int pca9632_detach_client(struct i2c_client *client);
++
++static int __reg_write(struct pca9632_data *pca, u_int8_t reg, u_int8_t val)
++{
++ return i2c_smbus_write_byte_data(&pca->client, reg, val);
++}
++
++static int reg_write(struct pca9632_data *pca, u_int8_t reg, u_int8_t val)
++{
++ int ret;
++
++ mutex_lock(&pca->lock);
++ ret = __reg_write(pca, reg, val);
++ mutex_unlock(&pca->lock);
++
++ return ret;
++}
++
++static int32_t __reg_read(struct pca9632_data *pca, u_int8_t reg)
++{
++ int32_t ret;
++
++ ret = i2c_smbus_read_byte_data(&pca->client, reg);
++
++ return ret;
++}
++
++static u_int8_t reg_read(struct pca9632_data *pca, u_int8_t reg)
++{
++ int32_t ret;
++
++ mutex_lock(&pca->lock);
++ ret = __reg_read(pca, reg);
++ mutex_unlock(&pca->lock);
++
++ return ret & 0xff;
++}
++
++static int reg_set_bit_mask(struct pca9632_data *pca,
++ u_int8_t reg, u_int8_t mask, u_int8_t val)
++{
++ int ret;
++ u_int8_t tmp;
++
++ val &= mask;
++
++ mutex_lock(&pca->lock);
++
++ tmp = __reg_read(pca, reg);
++ tmp &= ~mask;
++ tmp |= val;
++ ret = __reg_write(pca, reg, tmp);
++
++ mutex_unlock(&pca->lock);
++
++ return ret;
++}
++
++static inline int calc_dc(uint8_t idc)
++{
++ return (idc * 100) / 256;
++}
++
++/*
++ * Software reset
++ */
++static int software_rst(struct i2c_adapter *adapter)
++{
++ u8 buf[] = { 0xa5, 0x5a };
++
++ struct i2c_msg msg[] = {
++ {
++ .addr = 0x3,
++ .flags = 0,
++ .buf = &buf,
++ .len = sizeof(buf)
++ }
++ };
++
++ return i2c_transfer(adapter, msg, 1);
++}
++
++/*
++ * Group dmblnk control
++ */
++static void config_group_dmblnk(struct pca9632_data *pca, int group_dmblnk_mode)
++{
++ reg_set_bit_mask(pca, PCA9632_REG_MODE2, 0x20,
++ group_dmblnk_mode << PCA9632_DMBLNK_SHIFT);
++}
++
++static int get_group_dmblnk(struct pca9632_data *pca)
++{
++ return reg_read(pca, PCA9632_REG_MODE2) >> PCA9632_DMBLNK_SHIFT;
++}
++
++static ssize_t show_group_dmblnk(struct device *dev, struct device_attribute
++ *attr, char *buf)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++
++ if (get_group_dmblnk(pca))
++ return sprintf(buf, "blinking\n");
++ else
++ return sprintf(buf, "dimming\n");
++}
++
++static ssize_t set_group_dmblnk(struct device *dev, struct device_attribute
++ *attr, const char *buf, size_t count)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++ unsigned int mode = simple_strtoul(buf, NULL, 10);
++
++ if (mode)
++ dev_info(&pca->client.dev, "blinking\n");
++ else
++ dev_info(&pca->client.dev, "dimming\n");
++
++ config_group_dmblnk(pca, mode);
++
++ return count;
++}
++
++static DEVICE_ATTR(group_dmblnk, S_IRUGO | S_IWUSR, show_group_dmblnk,
++ set_group_dmblnk);
++
++static int reg_id_by_name(const char *name)
++{
++ int reg_id = -1;
++
++ if (!strncmp(name, "led0", 4))
++ reg_id = PCA9632_REG_PWM0;
++ else if (!strncmp(name, "led1", 4))
++ reg_id = PCA9632_REG_PWM1;
++ else if (!strncmp(name, "led2", 4))
++ reg_id = PCA9632_REG_PWM2;
++ else if (!strncmp(name, "led3", 4))
++ reg_id = PCA9632_REG_PWM3;
++
++ return reg_id;
++}
++
++static int get_led_output(struct pca9632_data *pca, int ldrx)
++{
++ u_int8_t led_state;
++
++ ldrx = ldrx - 2;
++ led_state = reg_read(pca, PCA9632_REG_LEDOUT);
++ led_state = (led_state >> (2 * ldrx)) & 0x03;
++
++ return led_state;
++}
++
++static void config_led_output(struct pca9632_data *pca, int ldrx,
++ enum pca9632_led_output led_output)
++{
++ u_int8_t mask;
++ int tmp;
++
++ ldrx = ldrx - 2;
++ mask = 0x03 << (2 * ldrx);
++ tmp = reg_set_bit_mask(pca, PCA9632_REG_LEDOUT,
++ mask, led_output << (2 * ldrx));
++}
++
++/*
++ * Individual brightness control
++ */
++static ssize_t show_brightness(struct device *dev, struct device_attribute
++ *attr, char *buf)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++ int ldrx;
++
++ ldrx = reg_id_by_name(attr->attr.name);
++
++ switch (get_led_output(pca, ldrx)) {
++
++ case PCA9632_OFF:
++ case PCA9632_ON:
++ return sprintf(buf, "%s",
++ led_output_name[get_led_output(pca, ldrx)]);
++
++ case PCA9632_CTRL_BY_PWM:
++ return sprintf(buf, "%d%% \n", calc_dc(reg_read(pca, ldrx)));
++
++ case PCA9632_CTRL_BY_PWM_GRPPWM:
++ /* check group dmblnk */
++ if (get_group_dmblnk(pca))
++ return sprintf(buf, "%d%% \n",
++ calc_dc(reg_read(pca, ldrx)));
++ return sprintf(buf, "%d%% \n",
++ calc_dc((reg_read(pca, ldrx) & 0xfc)));
++ default:
++ break;
++ }
++
++ return sprintf(buf, "invalid argument\n");
++}
++
++static ssize_t set_brightness(struct device *dev, struct device_attribute *attr,
++ const char *buf, size_t count)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++ unsigned int pwm = simple_strtoul(buf, NULL, 10);
++ int ldrx;
++
++ ldrx = reg_id_by_name(attr->attr.name);
++ reg_set_bit_mask(pca, ldrx, 0xff, pwm);
++
++ return count;
++}
++
++static
++DEVICE_ATTR(led0_pwm, S_IRUGO | S_IWUSR, show_brightness, set_brightness);
++static
++DEVICE_ATTR(led1_pwm, S_IRUGO | S_IWUSR, show_brightness, set_brightness);
++static
++DEVICE_ATTR(led2_pwm, S_IRUGO | S_IWUSR, show_brightness, set_brightness);
++static
++DEVICE_ATTR(led3_pwm, S_IRUGO | S_IWUSR, show_brightness, set_brightness);
++
++/*
++ * Group frequency control
++ */
++static ssize_t show_group_freq(struct device *dev, struct device_attribute
++ *attr, char *buf)
++{
++ uint32_t period;
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++
++ period = ((reg_read(pca, PCA9632_REG_GRPFREQ) + 1) * 1000) / 24;
++
++ return sprintf(buf, "%d ms\n", period);
++}
++
++static ssize_t set_group_freq(struct device *dev, struct device_attribute *attr,
++ const char *buf, size_t count)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++
++ unsigned int freq = simple_strtoul(buf, NULL, 10);
++ reg_write(pca, PCA9632_REG_GRPFREQ, freq);
++ return count;
++}
++
++static
++DEVICE_ATTR(group_freq, S_IRUGO | S_IWUSR, show_group_freq, set_group_freq);
++
++/*
++ * Group duty cycle tonrol*
++ */
++static ssize_t show_group_dc(struct device *dev, struct device_attribute *attr,
++ char *buf)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++
++ if (get_group_dmblnk(pca)) {
++
++ if (reg_read(pca, PCA9632_REG_GRPFREQ) <= 0x03)
++ return sprintf(buf, "%d%% \n",
++ calc_dc(reg_read(pca, PCA9632_REG_GRPPWM) & 0xfc));
++
++ return sprintf(buf, "%d%% \n", calc_dc(reg_read(pca,
++ PCA9632_REG_GRPPWM)));
++ }
++
++ return sprintf(buf, "%d%% \n", calc_dc(reg_read(pca,
++ PCA9632_REG_GRPPWM) & 0xf0));
++}
++
++static ssize_t set_group_dc(struct device *dev, struct device_attribute *attr,
++ const char *buf, size_t count)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++
++ unsigned int dc = simple_strtoul(buf, NULL, 10);
++
++ reg_set_bit_mask(pca, PCA9632_REG_GRPPWM, 0xff, dc);
++
++ return count;
++}
++
++static DEVICE_ATTR(group_dc, S_IRUGO | S_IWUSR, show_group_dc, set_group_dc);
++
++/*
++ * LED driver output
++ */
++static ssize_t show_led_output(struct device *dev, struct device_attribute
++ *attr, char *buf)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++ int ldrx;
++
++ ldrx = reg_id_by_name(attr->attr.name);
++
++ return sprintf(buf, "%s \n",
++ led_output_name[get_led_output(pca, ldrx)]);
++
++}
++static ssize_t set_led_output(struct device *dev, struct device_attribute *attr,
++ const char *buf, size_t count)
++{
++ struct i2c_client *client = to_i2c_client(dev);
++ struct pca9632_data *pca = i2c_get_clientdata(client);
++ enum pca9632_led_output led_output;
++ int ldrx;
++
++ led_output = simple_strtoul(buf, NULL, 10);
++ ldrx = reg_id_by_name(attr->attr.name);
++ config_led_output(pca, ldrx, led_output);
++
++ return count;
++}
++
++static
++DEVICE_ATTR(led0_output, S_IRUGO | S_IWUSR, show_led_output, set_led_output);
++static
++DEVICE_ATTR(led1_output, S_IRUGO | S_IWUSR, show_led_output, set_led_output);
++static
++DEVICE_ATTR(led2_output, S_IRUGO | S_IWUSR, show_led_output, set_led_output);
++static
++DEVICE_ATTR(led3_output, S_IRUGO | S_IWUSR, show_led_output, set_led_output);
++
++static struct attribute *pca_sysfs_entries[] = {
++ &dev_attr_group_dmblnk.attr,
++ &dev_attr_led0_pwm.attr,
++ &dev_attr_led1_pwm.attr,
++ &dev_attr_led2_pwm.attr,
++ &dev_attr_led3_pwm.attr,
++ &dev_attr_group_dc.attr,
++ &dev_attr_group_freq.attr,
++ &dev_attr_led0_output.attr,
++ &dev_attr_led1_output.attr,
++ &dev_attr_led2_output.attr,
++ &dev_attr_led3_output.attr,
++ NULL
++};
++
++static struct attribute_group pca_attr_group = {
++ .name = NULL, /* put in device directory */
++ .attrs = pca_sysfs_entries,
++};
++
++#ifdef CONFIG_PM
++static int pca9632_suspend(struct device *dev, pm_message_t state)
++{
++ /* FIXME: Not implemented */
++ return 0;
++}
++
++static int pca9632_resume(struct device *dev)
++{
++ /* FIXME: Not implemented */
++ return 0;
++}
++#else
++#define pca9632_suspend NULL
++#define pca9632_resume NULL
++#endif
++
++static struct i2c_driver pca9632_driver = {
++ .driver = {
++ .name = "pca9632",
++ .suspend = pca9632_suspend,
++ .resume = pca9632_resume,
++ },
++ .id = I2C_DRIVERID_PCA9632,
++ .attach_adapter = pca9632_attach_adapter,
++ .detach_client = pca9632_detach_client,
++};
++
++static int pca9632_detect(struct i2c_adapter *adapter, int address, int kind)
++{
++ struct i2c_client *new_client;
++ struct pca9632_data *pca;
++ int err;
++
++ pca = kzalloc(sizeof(struct pca9632_data), GFP_KERNEL);
++ if (!pca)
++ return -ENOMEM;
++
++ mutex_init(&pca->lock);
++
++ new_client = &pca->client;
++ i2c_set_clientdata(new_client, pca);
++ new_client->addr = address;
++ new_client->adapter = adapter;
++ new_client->driver = &pca9632_driver;
++ new_client->flags = 0;
++
++ strlcpy(new_client->name, "pca9632", I2C_NAME_SIZE);
++
++ /* register with i2c core */
++ err = i2c_attach_client(new_client);
++ if (err)
++ goto exit_kfree;
++
++ err = sysfs_create_group(&new_client->dev.kobj, &pca_attr_group);
++ if (err)
++ goto exit_detach;
++
++ /* software reset */
++ if (!software_rst(adapter))
++ dev_info(&pca->client.dev, "pca9632 sw-rst done\n");
++
++ /* enter normal mode */
++ reg_set_bit_mask(pca, PCA9632_REG_MODE1, 0x10, PCA9632_NORMAL);
++
++ return 0;
++
++exit_detach:
++ i2c_detach_client(new_client);
++exit_kfree:
++ kfree(pca);
++
++ return err;
++}
++
++static int pca9632_attach_adapter(struct i2c_adapter *adapter)
++{
++ return i2c_probe(adapter, &addr_data, pca9632_detect);
++}
++
++static int pca9632_detach_client(struct i2c_client *client)
++{
++ int err;
++
++ sysfs_remove_group(&client->dev.kobj, &pca_attr_group);
++ err = i2c_detach_client(client);
++
++ if (err)
++ return err;
++
++ kfree(i2c_get_clientdata(client));
++
++ return 0;
++}
++
++static int __init pca9632_plat_probe(struct platform_device *pdev)
++{
++ /* FIXME: platform data should be attached here */
++ pca9632_pdev = pdev;
++
++ return 0;
++}
++
++static int pca9632_plat_remove(struct platform_device *pdev)
++{
++ return 0;
++}
++
++static struct platform_driver pca9632_plat_driver = {
++ .probe = pca9632_plat_probe,
++ .remove = pca9632_plat_remove,
++ .driver = {
++ .owner = THIS_MODULE,
++ .name = "pca9632",
++ },
++};
++
++static int __init pca9632_init(void)
++{
++ int rc;
++
++ rc = platform_driver_register(&pca9632_plat_driver);
++ if (!rc)
++ i2c_add_driver(&pca9632_driver);
++
++ return rc;
++}
++
++static void __exit pca9632_exit(void)
++{
++ i2c_del_driver(&pca9632_driver);
++
++ platform_driver_unregister(&pca9632_plat_driver);
++}
++
++MODULE_AUTHOR("Matt Hsu <matt_hsu@openmoko.org>");
++MODULE_DESCRIPTION("NXP PCA9632 driver");
++MODULE_LICENSE("GPL");
++
++module_init(pca9632_init);
++module_exit(pca9632_exit);
+diff --git a/drivers/i2c/chips/pca9632.h b/drivers/i2c/chips/pca9632.h
+new file mode 100644
+index 0000000..be2892e
+--- /dev/null
++++ b/drivers/i2c/chips/pca9632.h
+@@ -0,0 +1,24 @@
++#ifndef _PCA9632_H
++#define _PCA9632_H
++
++
++enum pca9632_regs{
++
++ PCA9632_REG_MODE1 = 0x00,
++ PCA9632_REG_MODE2 = 0x01,
++ PCA9632_REG_PWM0 = 0x02,
++ PCA9632_REG_PWM1 = 0x03,
++ PCA9632_REG_PWM2 = 0x04,
++ PCA9632_REG_PWM3 = 0x05,
++ PCA9632_REG_GRPPWM = 0x06,
++ PCA9632_REG_GRPFREQ = 0x07,
++ PCA9632_REG_LEDOUT = 0x08,
++ PCA9632_REG_SUBADDR1 = 0x09,
++ PCA9632_REG_SUBADDR2 = 0x0a,
++ PCA9632_REG_SUBADDR3 = 0x0b,
++ PCA9632_REG_ALLCALLADR1 = 0x0c,
++};
++
++#define PCA9632_DMBLNK_SHIFT 5
++
++#endif /* _PCA9632_H */
+diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h
+index ee60156..d5a63fe 100644
+--- a/include/linux/i2c-id.h
++++ b/include/linux/i2c-id.h
+@@ -170,6 +170,7 @@
+ #define I2C_DRIVERID_PCF50606 1049
+ #define I2C_DRIVERID_TSL256X 1050
+ #define I2C_DRIVERID_PCF50633 1051
++#define I2C_DRIVERID_PCA9632 1052
+
+ /*
+ * ---- Adapter types ----------------------------------------------------
+--
+1.5.6.5
+
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