diff options
Diffstat (limited to 'recipes/linux/linux-2.6.29/boc01/012-090219-capsense.patch')
| -rw-r--r-- | recipes/linux/linux-2.6.29/boc01/012-090219-capsense.patch | 883 |
1 files changed, 883 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.29/boc01/012-090219-capsense.patch b/recipes/linux/linux-2.6.29/boc01/012-090219-capsense.patch new file mode 100644 index 0000000000..ce4af93e3a --- /dev/null +++ b/recipes/linux/linux-2.6.29/boc01/012-090219-capsense.patch @@ -0,0 +1,883 @@ +Index: linux-2.6.29/drivers/input/misc/Kconfig +=================================================================== +--- linux-2.6.29.orig/drivers/input/misc/Kconfig 2009-03-24 00:12:14.000000000 +0100 ++++ linux-2.6.29/drivers/input/misc/Kconfig 2009-04-01 17:38:02.000000000 +0200 +@@ -227,4 +227,13 @@ + Say Y to include support for delivering PMU events via input + layer on NXP PCF50633. + ++config INPUT_CAPSENSE_BTNS ++ tristate "CAPSENSE CY8C201xx buttons interface" ++ select INPUT_POLLDEV ++ select LEDS_CLASS ++ help ++ To compile this driver as a module, choose M here: ++ the module will be called capsense-btns. ++ To change poll interval, invoque poll parameter in msecs. ++ + endif +Index: linux-2.6.29/drivers/input/misc/Makefile +=================================================================== +--- linux-2.6.29.orig/drivers/input/misc/Makefile 2009-03-24 00:12:14.000000000 +0100 ++++ linux-2.6.29/drivers/input/misc/Makefile 2009-04-01 17:38:23.000000000 +0200 +@@ -22,3 +22,4 @@ + obj-$(CONFIG_INPUT_APANEL) += apanel.o + obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o + obj-$(CONFIG_INPUT_PCF50633_PMU) += pcf50633-input.o ++obj-$(CONFIG_INPUT_CAPSENSE_BTNS) += capsense-btns.o +Index: linux-2.6.29/drivers/input/misc/capsense-btns.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.29/drivers/input/misc/capsense-btns.c 2009-04-01 17:38:02.000000000 +0200 +@@ -0,0 +1,456 @@ ++/* ++ * CAPSENSE Interface driver ++ * ++ * ++ * Copyright (C) 2008, CenoSYS (www.cenosys.com). ++ * ++ * Guillaume Ligneul <guillaume.ligneul@gmail.com> ++ * Jeremy Lainé <jeremy.laine@bolloretelecom.eu> ++ * Sylvain Giroudon <sylvain.giroudon@goobie.fr> ++ * ++ * This software program is licensed subject to the GNU General Public License ++ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html ++ */ ++ ++#include <linux/init.h> ++#include <linux/input-polldev.h> ++#include <linux/ioport.h> ++#include <linux/module.h> ++#include <linux/i2c.h> ++#include <linux/leds.h> ++ ++ ++static int capsense_attach_adapter(struct i2c_adapter *adapter); ++static int capsense_detach_client(struct i2c_client *client); ++#ifdef CONFIG_PM ++static int capsense_suspend(struct i2c_client *client, pm_message_t mesg); ++static int capsense_resume(struct i2c_client *client); ++#endif ++ ++#define DRIVER_NAME "capsense" ++ ++/* i2c configuration */ ++#define CAPSENSE_I2C_ADDR 0x25 ++// To debug (may be add in include/linux/i2c-id.h) ++#define I2C_DRIVERID_CAPSENSE 98 ++ ++#define BUTTONS_POLL_INTERVAL 30 /* msec */ ++ ++#define CAP_INPUT_PORT(port) (0x00+(port)) ++#define CAP_STATUS_PORT(port) (0x02+(port)) ++#define CAP_OUTPUT_PORT(port) (0x04+(port)) ++#define CAP_CS_ENABLE(port) (0x06+(port)) ++#define CAP_GPIO_ENABLE(port) (0x08+(port)) ++#define CAP_INVERSION_MASK(port) (0x0A+(port)) ++#define CAP_INT_MASK(port) (0x0C+(port)) ++#define CAP_STATUS_HOLD_MSK(port) (0x0E+(port)) ++#define CAP_DM_PULL_UP(port) (0x10+(4*(port))) ++#define CAP_DM_STRONG(port) (0x11+(4*(port))) ++#define CAP_DM_HIGHZ(port) (0x12+(4*(port))) ++#define CAP_OD_LOW(port) (0x13+(4*(port))) ++#define CAP_PWM_ENABLE(port) (0x18+(port)) ++#define CAP_PWM_MODE_DC 0x1A ++#define CAP_PWM_DELAY 0x1B ++#define CAP_OP_SEL(port,bit) (0x1C+(25*(port))+(5*(bit))) ++#define CAP_READ_STATUS(port) (0x88+(port)) ++ ++#define CAP_CS(command,port,bit) ((command)+(5*(port))+(bit)) ++#define CAP_CS_FINGER_TH(port,bit) CAP_CS(0x61,port,bit) ++#define CAP_CS_IDAC(port,bit) CAP_CS(0x6B,port,bit) ++ ++#define CAP_DEVICE_ID 0x7A ++#define CAP_DEVICE_STATUS 0x7B ++#define CAP_I2C_ADDR_DM 0x7C ++ ++#define CAP_COMMAND_REG 0xA0 ++#define CAP_COMMAND_STORE_NVM 0x01 ++#define CAP_COMMAND_RESTORE_FACTORY 0x02 ++#define CAP_COMMAND_RECONFIGURE 0x06 ++#define CAP_COMMAND_NORMAL_MODE 0x07 ++#define CAP_COMMAND_SETUP_MODE 0x08 ++ ++#define CAP_NLEDS 5 ++ ++static int poll_interval = BUTTONS_POLL_INTERVAL; ++module_param_named(poll, poll_interval, uint, 0); ++MODULE_PARM_DESC(poll, "poll interval in msec (30=default)"); ++ ++static const unsigned short normal_i2c[] = { ++ CAPSENSE_I2C_ADDR , I2C_CLIENT_END ++}; ++I2C_CLIENT_INSMOD; ++ ++static struct i2c_driver capsense_driver = { ++ .driver = { ++ .name = DRIVER_NAME, ++ }, ++ .id = I2C_DRIVERID_CAPSENSE, ++ .attach_adapter = &capsense_attach_adapter, ++ .detach_client = &capsense_detach_client, ++#ifdef CONFIG_PM ++ .suspend = &capsense_suspend, ++ .resume = &capsense_resume, ++#endif ++}; ++ ++struct capsense_led { ++ struct led_classdev cdev; ++ struct capsense_ctx *capsense; ++ int port; ++ int bit; ++}; ++ ++struct capsense_ctx { ++ struct input_polled_dev *ipdev; ++ struct i2c_client client; ++ unsigned char key_state; ++ struct capsense_led leds[CAP_NLEDS]; ++ unsigned char led_state[2]; ++ struct mutex mutex; ++}; ++ ++static unsigned short input_keymap[] = { ++ // GP0 ++ KEY_F1, ++ KEY_ENTER, ++ KEY_DOWN, ++ KEY_BACKSPACE, ++ // GP1 ++ KEY_UP, ++}; ++ ++struct capsense_keymap { ++ char *name; ++ int port, bit; ++}; ++ ++static struct capsense_keymap phys_keymap[] = { ++ { "info", 0, 4 }, ++ { "ok", 0, 2 }, ++ { "down", 0, 3 }, ++ { "back", 0, 0 }, ++ { "up", 1, 4 }, ++}; ++ ++ ++struct capsense_ledmap { ++ char *name; ++ int port, bit; ++}; ++ ++static struct capsense_ledmap ledmap[CAP_NLEDS] = { ++ { "capsense:blue:back", 0, 1 }, ++ { "capsense:blue:info", 1, 0 }, ++ { "capsense:blue:down", 1, 1 }, ++ { "capsense:blue:ok", 1, 2 }, ++ { "capsense:blue:up", 1, 3 }, ++}; ++ ++ ++/* ++ * Buttons events handling ++ */ ++ ++static void handle_buttons(struct input_polled_dev *dev) ++{ ++ struct capsense_ctx *capsense = dev->private; ++ u8 port_value; ++ u8 new_state = 0; ++ int port; ++ u8 changed; ++ int i; ++ ++ mutex_lock(&capsense->mutex); ++ ++ // read status ++ port = -1; ++ port_value = 0; ++ for (i = 0; i < ARRAY_SIZE(phys_keymap); i++) { ++ if ( phys_keymap[i].port != port ) { ++ port = phys_keymap[i].port; ++ port_value = i2c_smbus_read_byte_data(&capsense->client, CAP_READ_STATUS(port)); ++ } ++ ++ if ( port_value & (1 << phys_keymap[i].bit) ) ++ new_state |= (1 << i); ++ } ++ ++ mutex_unlock(&capsense->mutex); ++ ++ // update keyboard state ++ changed = capsense->key_state ^ new_state; ++ for (i = 0; i < ARRAY_SIZE(input_keymap); i++) ++ if (changed & (1 << i)) ++ input_report_key(dev->input, input_keymap[i], (new_state & (1 << i))); ++ capsense->key_state = new_state; ++ input_sync(dev->input); ++} ++ ++ ++/* ++ * LEDs management ++ */ ++ ++static void ++capsense_led_set(struct led_classdev *led_cdev, ++ enum led_brightness value) ++{ ++ struct capsense_led *led = (struct capsense_led *) led_cdev; ++ struct capsense_ctx *capsense = led->capsense; ++ int port = led->port; ++ unsigned char mask = (1 << led->bit); ++ ++ if ( value ) ++ capsense->led_state[port] |= mask; ++ else ++ capsense->led_state[port] &= ~mask; ++ ++ mutex_lock(&capsense->mutex); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_OUTPUT_PORT(port), capsense->led_state[port]); ++ mutex_unlock(&capsense->mutex); ++} ++ ++static void ++capsense_led_enable(struct capsense_led *led, int state) ++{ ++ struct capsense_ctx *capsense = led->capsense; ++ ++ mutex_lock(&capsense->mutex); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_OP_SEL(led->port, led->bit), state ? 0x00 : 0x80); ++ mutex_unlock(&capsense->mutex); ++} ++ ++static int ++capsense_led_init(struct capsense_ctx *capsense) ++{ ++ int i; ++ int ret; ++ ++ for (i = 0; i < CAP_NLEDS; i++) { ++ struct capsense_led *led = &(capsense->leds[i]); ++ ++ led->cdev.name = ledmap[i].name; ++ led->cdev.brightness_set = capsense_led_set; ++ led->capsense = capsense; ++ led->port = ledmap[i].port; ++ led->bit = ledmap[i].bit; ++ ++ ret = led_classdev_register(&capsense->ipdev->input->dev, &led->cdev); ++ if ( ret < 0 ) ++ return -1; ++ ++ capsense_led_enable(led, 1); ++ } ++ ++ /* Switch all leds off */ ++ mutex_lock(&capsense->mutex); ++ ++ capsense->led_state[0] = 0x00; ++ i2c_smbus_write_byte_data(&capsense->client, CAP_OUTPUT_PORT(0), 0x00); ++ ++ capsense->led_state[1] = 0x00; ++ i2c_smbus_write_byte_data(&capsense->client, CAP_OUTPUT_PORT(1), 0x00); ++ ++ mutex_unlock(&capsense->mutex); ++ ++ return 0; ++} ++ ++ ++static void ++capsense_led_exit(struct capsense_ctx *capsense) ++{ ++ int i; ++ ++ for (i = 0; i < CAP_NLEDS; i++) { ++ led_classdev_unregister(&capsense->leds[i].cdev); ++ } ++} ++ ++ ++static inline void ++capsense_led_suspend(struct capsense_ctx *capsense) ++{ ++ int i; ++ ++ for (i = 0; i < CAP_NLEDS; i++) { ++ struct capsense_led *led = &(capsense->leds[i]); ++ ++ led_classdev_suspend(&led->cdev); ++ capsense_led_enable(led, 0); ++ } ++} ++ ++ ++static inline void ++capsense_led_resume(struct capsense_ctx *capsense) ++{ ++ int i; ++ ++ for (i = 0; i < CAP_NLEDS; i++) { ++ struct capsense_led *led = &(capsense->leds[i]); ++ ++ capsense_led_enable(led, 1); ++ led_classdev_resume(&led->cdev); ++ } ++} ++ ++ ++/* ++ * Device configuration through procfs entries ++ */ ++ ++#ifdef CONFIG_PROC_FS ++#include "capsense-procfs.c" ++#endif ++ ++ ++/* ++ * Device initialisation ++ */ ++ ++static int ++capsense_probe(struct i2c_adapter *adapter, int addr, int kind) ++{ ++ struct capsense_ctx *capsense; ++ struct input_polled_dev *ipdev; ++ struct input_dev *input; ++ int rc = 0, err = -ENOMEM, i=0; ++ ++ capsense = kzalloc(sizeof(*capsense), GFP_KERNEL); ++ if (!capsense) ++ goto failout; ++ ++ mutex_init(&capsense->mutex); ++ ++ if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { ++ goto failout; ++ } ++ ++ ipdev = input_allocate_polled_device(); ++ if (!ipdev) ++ goto failout; ++ ++ capsense->key_state = 0; ++ capsense->ipdev = ipdev; ++ capsense->client.adapter = adapter; ++ capsense->client.addr = addr; ++ capsense->client.driver = &capsense_driver; ++ strlcpy(capsense->client.name, DRIVER_NAME, I2C_NAME_SIZE); ++ i2c_set_clientdata(&capsense->client, capsense); ++ ++ rc = i2c_attach_client(&capsense->client); ++ if (rc) ++ goto out_attach; ++ ++ ipdev->poll = handle_buttons; ++ ipdev->private = capsense; ++ ipdev->poll_interval = poll_interval; ++ ++ input = ipdev->input; ++ input->name = "Capsense buttons"; ++ input->phys = "capsense/input0"; ++ input->id.bustype = BUS_I2C; ++ input->dev.parent = &capsense->client.dev; ++ ++ input->keycode = input_keymap; ++ input->keycodemax = ARRAY_SIZE(input_keymap); ++ input->keycodesize = sizeof(unsigned short); ++ ++ input_set_capability(input, EV_MSC, MSC_SCAN); ++ set_bit(EV_KEY, ipdev->input->evbit); ++ ++ for (i = 0; i < ARRAY_SIZE(input_keymap); i++) ++ set_bit(input_keymap[i], ipdev->input->keybit); ++ ++ rc = input_register_polled_device(ipdev); ++ if(rc) ++ goto out_polled; ++ ++ if ( capsense_led_init(capsense) ) ++ goto out_registered; ++ ++#ifdef CONFIG_PROC_FS ++ /* Create /proc entries for hardware device configuration */ ++ capsense_proc_init(capsense); ++#endif ++ ++ return 0; ++ ++out_registered: ++ input_unregister_polled_device(ipdev); ++out_polled: ++ i2c_detach_client(&capsense->client); ++out_attach: ++ input_free_polled_device(ipdev); ++failout: ++ return err; ++} ++ ++static int ++capsense_attach_adapter (struct i2c_adapter *adapter) ++{ ++ return i2c_probe(adapter, &addr_data, capsense_probe); ++} ++ ++static int ++capsense_detach_client(struct i2c_client *client) ++{ ++ struct capsense_ctx *capsense = i2c_get_clientdata(client); ++ ++ capsense_led_exit(capsense); ++ input_unregister_polled_device(capsense->ipdev); ++ i2c_detach_client(&capsense->client); ++ input_free_polled_device(capsense->ipdev); ++ return 0; ++} ++ ++ ++/* ++ * Power management ++ */ ++ ++#ifdef CONFIG_PM ++static int capsense_suspend(struct i2c_client *client, pm_message_t mesg) ++{ ++ struct capsense_ctx *capsense = i2c_get_clientdata(client); ++ ++ printk(KERN_INFO DRIVER_NAME ": suspend\n"); ++ ++ capsense_led_suspend(capsense); ++ ++ return 0; ++} ++ ++static int capsense_resume(struct i2c_client *client) ++{ ++ struct capsense_ctx *capsense = i2c_get_clientdata(client); ++ ++ printk(KERN_INFO DRIVER_NAME ": resume\n"); ++ ++ capsense_led_resume(capsense); ++ ++ return 0; ++} ++#endif ++ ++ ++/* ++ * Driver initialisation ++ */ ++ ++static int __init capsense_buttons_init(void) ++{ ++ return i2c_add_driver(&capsense_driver); ++} ++ ++static void __exit capsense_buttons_exit(void) ++{ ++ i2c_del_driver(&capsense_driver); ++} ++ ++MODULE_AUTHOR("Guillaume Ligneul <guillaume.ligneul@cenosys.com>"); ++MODULE_DESCRIPTION("Capsense CY8C201xx Input driver"); ++MODULE_LICENSE("GPL"); ++module_init(capsense_buttons_init); ++module_exit(capsense_buttons_exit); +Index: linux-2.6.29/drivers/input/misc/capsense-procfs.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.29/drivers/input/misc/capsense-procfs.c 2009-04-01 17:38:02.000000000 +0200 +@@ -0,0 +1,390 @@ ++/* ++ * CAPSENSE Interface driver ++ * Device setup using procfs ++ * ++ * Copyright (C) 2008, Goobie (www.goobie.fr). ++ * ++ * Sylvain Giroudon <sylvain.giroudon@goobie.fr> ++ * ++ * This software program is licensed subject to the GNU General Public License ++ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html ++ */ ++ ++#include <linux/proc_fs.h> ++#include <linux/uaccess.h> ++ ++ ++struct capsense_proc_data { ++ struct capsense_ctx *capsense; ++ struct capsense_keymap *phys; ++ char *name; ++ unsigned char command; ++ unsigned char hex; ++}; ++ ++struct capsense_proc_entry { ++ char *name; ++ unsigned char command; ++ struct capsense_proc_data data[ARRAY_SIZE(phys_keymap)]; ++}; ++ ++static struct capsense_proc_entry capsense_proc_key_entries[] = { ++ { "CS_FINGER_TH", CAP_CS_FINGER_TH(0,0) }, ++ { "CS_IDAC", CAP_CS_IDAC(0,0) }, ++}; ++ ++static struct capsense_proc_entry capsense_proc_device_entries[] = { ++ { "DEVICE_ID", CAP_DEVICE_ID }, ++ { "DEVICE_STATUS", CAP_DEVICE_STATUS }, ++}; ++ ++struct capsense_proc_command { ++ char *name; ++ unsigned char command; ++ struct capsense_ctx *capsense; ++}; ++ ++static struct capsense_proc_command capsense_proc_commands[] = { ++ { "store", CAP_COMMAND_STORE_NVM }, ++ //{ "factory", CAP_COMMAND_RESTORE_FACTORY }, ++ //{ "reconfigure", CAP_COMMAND_RECONFIGURE }, ++}; ++ ++ ++static int capsense_proc_read(char *page, char **start, off_t off, int count, ++ int *eof, void *_data) ++{ ++ struct capsense_proc_data *data = _data; ++ struct capsense_ctx *capsense = data->capsense; ++ u8 value; ++ int len; ++ ++ mutex_lock(&capsense->mutex); ++ value = i2c_smbus_read_byte_data(&capsense->client, data->command); ++ mutex_unlock(&capsense->mutex); ++ ++ if ( data->hex ) ++ len = sprintf(page, "%02X\n", value); ++ else ++ len = sprintf(page, "%u\n", value); ++ ++ len -= off; ++ if ( len < count ) { ++ *eof = 1; ++ if ( len <= 0 ) ++ return 0; ++ } else { ++ len = count; ++ } ++ ++ *start = page + off; ++ ++ return len; ++} ++ ++ ++static int capsense_proc_write(struct file *file, const char *buf, ++ unsigned long count, void *_data) ++{ ++ struct capsense_proc_data *data = _data; ++ struct capsense_ctx *capsense = data->capsense; ++ char lbuf[count+1]; ++ u8 value; ++ ++ /* Only root can do this */ ++ if ( !capable(CAP_SYS_ADMIN) ) ++ return -EACCES; ++ ++ memset(lbuf, 0, sizeof(lbuf)); ++ ++ if (copy_from_user(lbuf, buf, count)) ++ return -EFAULT; ++ ++ if ( sscanf(lbuf, "%hhi", &value) == 1 ) { ++ mutex_lock(&capsense->mutex); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_COMMAND_REG, CAP_COMMAND_SETUP_MODE); ++ i2c_smbus_write_byte_data(&capsense->client, data->command, value); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_COMMAND_REG, CAP_COMMAND_NORMAL_MODE); ++ mutex_unlock(&capsense->mutex); ++ } ++ else { ++ printk(KERN_INFO DRIVER_NAME ": [%s/%s] Syntax error in expression\n", data->phys->name, data->name); ++ return -EINVAL; ++ } ++ ++ return count; ++} ++ ++ ++static inline char *str_skip_blanks(char *s) ++{ ++ while ( (*s != '\0') && (*s <= ' ') ) ++ s++; ++ return s; ++} ++ ++ ++static inline char *str_skip_chars(char *s) ++{ ++ while ( *s > ' ' ) ++ s++; ++ return s; ++} ++ ++ ++static int capsense_proc_write_iic(struct file *file, const char *buf, ++ unsigned long count, void *data) ++{ ++ struct capsense_ctx *capsense = data; ++ char lbuf[count+1]; ++ int lnum; ++ char *s; ++ ++ /* Only root can do this */ ++ if ( !capable(CAP_SYS_ADMIN) ) ++ return -EACCES; ++ ++ printk(KERN_INFO DRIVER_NAME ": Reading configuration script from /proc/" DRIVER_NAME "/iic (%lu bytes)\n", count); ++ ++ memset(lbuf, 0, sizeof(lbuf)); ++ ++ if (copy_from_user(lbuf, buf, count)) ++ return -EFAULT; ++ ++ s = lbuf; ++ lnum = 0; ++ ++ while ( *s != '\0' ) { ++ char *line; ++ char operation; ++ unsigned char data[255]; ++ int size; ++ struct i2c_msg msg; ++ int ret; ++ ++ lnum++; ++ ++ /* Spot the end of the line */ ++ line = s; ++ while ( (*s != '\0') && (*s != '\n') ) ++ s++; ++ if ( *s != '\0' ) ++ *(s++) = '\0'; ++ ++ //printk(KERN_INFO DRIVER_NAME ": iic:%d: '%s'\n", lnum, line); ++ ++ /* Strip leading blank characters */ ++ line = str_skip_blanks(line); ++ ++ /* Empty or commented line: skip! */ ++ if ( (*line == '\0') || (*line == '#') ) ++ continue; ++ ++ /* Only accept write operations 'w' */ ++ operation = *(line++); ++ if ( operation != 'w' ) { ++ printk(KERN_ERR DRIVER_NAME ": iic:%d: Unknown operation '%c ...' -- skipped\n", lnum, operation); ++ continue; ++ } ++ ++ /* Extract data values */ ++ size = 0; ++ while ( (*line != '\0') && (size < sizeof(data)) ) { ++ line = str_skip_blanks(line); ++ if ( *line != '\0' ) ++ sscanf(line, "%hhx", &data[size++]); ++ line = str_skip_chars(line); ++ } ++ ++ { ++ int i; ++ ++ printk(KERN_DEBUG DRIVER_NAME ": iic:%d: %c", lnum, operation); ++ for (i = 0; i < size; i++) ++ printk(" %02X", data[i]); ++ printk("\n"); ++ } ++ ++ /* Do nothing if there are less than 2 data bytes (address, command) */ ++ if ( size < 3 ) { ++ printk(KERN_ERR DRIVER_NAME ": iic:%d: Too few data for operation '%c ...' -- skipped\n", lnum, operation); ++ continue; ++ } ++ ++ /* First data byte is the i2c device address: ++ Warn if it does not match the standard i2c address */ ++ if ( data[0] != CAPSENSE_I2C_ADDR ) { ++ printk(KERN_WARNING DRIVER_NAME ": iic:%d: WARNING - Specified i2c address (%02X) differs from standard i2c address (%02X)\n", lnum, data[0], CAPSENSE_I2C_ADDR); ++ } ++ ++ /* Second data byte is the capsense register: ++ Warn if changing the device I2C address */ ++ if ( data[1] == CAP_I2C_ADDR_DM ) { ++ printk(KERN_WARNING DRIVER_NAME ": iic:%d: WARNING - Changing i2c address to %02X (I2C_ADDR_DM=%02X)\n", lnum, data[2] & 0x7F, data[2]); ++ } ++ ++ /* Send command to i2c device */ ++ mutex_lock(&capsense->mutex); ++ ++ msg.addr = data[0]; ++ msg.flags = capsense->client.flags; ++ msg.len = size - 1; ++ msg.buf = data + 1; ++ //printk(KERN_INFO DRIVER_NAME ": iic:%d: i2c transfer: addr=0x%02X flags=0x%04X len=%d\n", lnum, msg.addr, msg.flags, msg.len); ++ ++ ret = i2c_transfer(capsense->client.adapter, &msg, 1); ++ if ( ret < 0 ) ++ printk(KERN_ERR DRIVER_NAME ": iic:%d: i2c transfer failed (%d), command rejected\n", lnum, ret); ++ ++ mutex_unlock(&capsense->mutex); ++ } ++ ++ return count; ++} ++ ++ ++static int capsense_proc_write_command(struct file *file, const char *buf, ++ unsigned long count, void *data) ++{ ++ struct capsense_proc_command *command = data; ++ struct capsense_ctx *capsense = command->capsense; ++ ++ /* Only root can do this */ ++ if ( !capable(CAP_SYS_ADMIN) ) ++ return -EACCES; ++ ++ printk(KERN_INFO DRIVER_NAME ": %s (%02X)\n", command->name, command->command); ++ ++ mutex_lock(&capsense->mutex); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_COMMAND_REG, CAP_COMMAND_SETUP_MODE); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_COMMAND_REG, command->command); ++ i2c_smbus_write_byte_data(&capsense->client, CAP_COMMAND_REG, CAP_COMMAND_NORMAL_MODE); ++ mutex_unlock(&capsense->mutex); ++ ++ return count; ++} ++ ++ ++static int capsense_proc_init(struct capsense_ctx *capsense) ++{ ++ struct proc_dir_entry *root; ++ struct proc_dir_entry *dir; ++ struct proc_dir_entry *ent; ++ int i; ++ ++ /* Create capsense proc directory */ ++ printk(KERN_INFO DRIVER_NAME ": Creating setup entries in /proc/" DRIVER_NAME "/\n"); ++ ++ root = proc_mkdir(DRIVER_NAME, NULL); ++ if ( root == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create directory /proc/" DRIVER_NAME "\n"); ++ return -1; ++ } ++ ++ root->owner = THIS_MODULE; ++ ++ /* Create iic config file dump entry */ ++ ent = create_proc_entry("iic", S_IFREG|S_IWUSR, root); ++ if ( ent == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create entry /proc/" DRIVER_NAME "/iic\n"); ++ return -1; ++ } ++ ++ ent->owner = THIS_MODULE; ++ ent->data = capsense; ++ ent->write_proc = capsense_proc_write_iic; ++ ++ /* Create commands directory */ ++ dir = proc_mkdir("commands", root); ++ if ( dir == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create directory /proc/" DRIVER_NAME "/commands\n"); ++ return -1; ++ } ++ ++ dir->owner = THIS_MODULE; ++ ++ /* Create command entries */ ++ for (i = 0; i < ARRAY_SIZE(capsense_proc_commands); i++) { ++ struct capsense_proc_command *command = &capsense_proc_commands[i]; ++ ++ command->capsense = capsense; ++ ++ ent = create_proc_entry(command->name, S_IFREG|S_IWUSR, dir); ++ if ( ent == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create entry /proc/" DRIVER_NAME "/commands/%s\n", command->name); ++ return -1; ++ } ++ ++ ent->owner = THIS_MODULE; ++ ent->data = command; ++ ent->write_proc = capsense_proc_write_command; ++ } ++ ++ /* Create device status read entries */ ++ for (i = 0; i < ARRAY_SIZE(capsense_proc_device_entries); i++) { ++ struct capsense_proc_entry *entry = &(capsense_proc_device_entries[i]); ++ struct capsense_proc_data *data = &(entry->data[i]); ++ ++ data->capsense = capsense; ++ data->phys = NULL; ++ data->name = entry->name; ++ data->command = entry->command; ++ data->hex = 1; ++ ++ ent = create_proc_entry(entry->name, S_IFREG|S_IRUSR, root); ++ if ( ent == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create entry /proc/" DRIVER_NAME "/%s\n", entry->name); ++ continue; ++ } ++ ++ ent->owner = THIS_MODULE; ++ ent->data = data; ++ ent->read_proc = capsense_proc_read; ++ } ++ ++ /* Create keys management directory */ ++ dir = proc_mkdir("keys", root); ++ if ( dir == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create directory /proc/" DRIVER_NAME "/keys\n"); ++ return -1; ++ } ++ ++ dir->owner = THIS_MODULE; ++ ++ /* Create keys sensitivity adjustment entries */ ++ for (i = 0; i < ARRAY_SIZE(phys_keymap); i++) { ++ struct capsense_keymap *phys = &phys_keymap[i]; ++ struct proc_dir_entry *subdir; ++ int ientry; ++ ++ subdir = proc_mkdir(phys->name, dir); ++ if ( subdir == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create directory /proc/" DRIVER_NAME "/keys/%s\n", phys->name); ++ continue; ++ } ++ ++ for (ientry = 0; ientry < ARRAY_SIZE(capsense_proc_key_entries); ientry++) { ++ struct capsense_proc_entry *entry = &(capsense_proc_key_entries[ientry]); ++ struct capsense_proc_data *data = &(entry->data[i]); ++ ++ data->capsense = capsense; ++ data->phys = phys; ++ data->name = entry->name; ++ data->command = CAP_CS(entry->command, phys->port, phys->bit); ++ data->hex = 0; ++ ++ ent = create_proc_entry(entry->name, S_IFREG|S_IRUSR|S_IWUSR, subdir); ++ if ( ent == NULL ) { ++ printk(KERN_WARNING DRIVER_NAME ": Cannot create entry /proc/" DRIVER_NAME "/keys/%s/%s\n", phys->name, entry->name); ++ continue; ++ } ++ ++ ent->owner = THIS_MODULE; ++ ent->data = data; ++ ent->read_proc = capsense_proc_read; ++ ent->write_proc = capsense_proc_write; ++ } ++ } ++ ++ return 0; ++} |