358 lines
7.7 KiB
C
358 lines
7.7 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2009 Google, Inc.
|
||
|
|
* Copyright (C) 2009 HTC Corporation.
|
||
|
|
*
|
||
|
|
* This software is licensed under the terms of the GNU General Public
|
||
|
|
* License version 2, as published by the Free Software Foundation, and
|
||
|
|
* may be copied, distributed, and modified under those terms.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Control bluetooth power for supersonic platform */
|
||
|
|
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/rfkill.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/gpio.h>
|
||
|
|
#include <asm/mach-types.h>
|
||
|
|
|
||
|
|
#include "gpio_chip.h"
|
||
|
|
#include "proc_comm.h"
|
||
|
|
#include "board-supersonic.h"
|
||
|
|
|
||
|
|
#define HTC_RFKILL_DBG
|
||
|
|
|
||
|
|
static struct rfkill *bt_rfk;
|
||
|
|
static const char bt_name[] = "bcm4329";
|
||
|
|
static int pre_state;
|
||
|
|
|
||
|
|
static uint32_t supersonic_bt_init_table[] = {
|
||
|
|
/* BT_RTS */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_RTS,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_CTS */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_CTS,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_RX */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_RX,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_TX */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_TX,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_8MA),
|
||
|
|
|
||
|
|
/* BT_SHUTDOWN_N */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_SHUTDOWN_N,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_4MA),
|
||
|
|
/* BT_RESET_N */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_RESET_N,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_4MA),
|
||
|
|
|
||
|
|
/* BT_HOST_WAKE */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_HOST_WAKE,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_4MA),
|
||
|
|
/* BT_CHIP_WAKE */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_CHIP_WAKE,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_4MA),
|
||
|
|
};
|
||
|
|
|
||
|
|
static uint32_t supersonic_bt_on_table[] = {
|
||
|
|
/* BT_RTS */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_RTS,
|
||
|
|
2,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_CTS */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_CTS,
|
||
|
|
2,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_RX */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_RX,
|
||
|
|
2,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_TX */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_TX,
|
||
|
|
2,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
|
||
|
|
/* BT_HOST_WAKE */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_HOST_WAKE,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_4MA),
|
||
|
|
/* BT_CHIP_WAKE */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_CHIP_WAKE,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_4MA),
|
||
|
|
};
|
||
|
|
|
||
|
|
static uint32_t supersonic_bt_off_table[] = {
|
||
|
|
/* BT_RTS */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_RTS,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_CTS */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_CTS,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_RX */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_RX,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_8MA),
|
||
|
|
/* BT_TX */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_UART1_TX,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_8MA),
|
||
|
|
|
||
|
|
/* BT_HOST_WAKE */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_HOST_WAKE,
|
||
|
|
0,
|
||
|
|
GPIO_INPUT,
|
||
|
|
GPIO_PULL_UP,
|
||
|
|
GPIO_4MA),
|
||
|
|
/* BT_CHIP_WAKE */
|
||
|
|
PCOM_GPIO_CFG(SUPERSONIC_GPIO_BT_CHIP_WAKE,
|
||
|
|
0,
|
||
|
|
GPIO_OUTPUT,
|
||
|
|
GPIO_NO_PULL,
|
||
|
|
GPIO_4MA),
|
||
|
|
};
|
||
|
|
|
||
|
|
static void config_bt_table(uint32_t *table, int len)
|
||
|
|
{
|
||
|
|
int n;
|
||
|
|
unsigned id;
|
||
|
|
for (n = 0; n < len; n++) {
|
||
|
|
id = table[n];
|
||
|
|
msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void supersonic_config_bt_init(void)
|
||
|
|
{
|
||
|
|
/* set bt initial configuration*/
|
||
|
|
config_bt_table(supersonic_bt_init_table,
|
||
|
|
ARRAY_SIZE(supersonic_bt_init_table));
|
||
|
|
/* BT_RESET_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_RESET_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
mdelay(5);
|
||
|
|
|
||
|
|
/* BT_SHUTDOWN_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_SHUTDOWN_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
|
||
|
|
/* BT_RESET_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_RESET_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
|
||
|
|
mdelay(15);
|
||
|
|
|
||
|
|
/* BT_RESET_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_RESET_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
/* BT_SHUTDOWN_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_SHUTDOWN_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
|
||
|
|
/* BT_RTS */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_UART1_RTS,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
/* BT_TX */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_UART1_TX,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
|
||
|
|
/* BT_CHIP_WAKE */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_CHIP_WAKE,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void supersonic_config_bt_on(void)
|
||
|
|
{
|
||
|
|
|
||
|
|
#ifdef HTC_RFKILL_DBG
|
||
|
|
printk(KERN_INFO "-- RK ON --\n");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* set bt on configuration*/
|
||
|
|
config_bt_table(supersonic_bt_on_table,
|
||
|
|
ARRAY_SIZE(supersonic_bt_on_table));
|
||
|
|
mdelay(5);
|
||
|
|
/* BT_SHUTDOWN_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_SHUTDOWN_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
|
||
|
|
/* BT_RESET_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_RESET_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
|
||
|
|
mdelay(5);
|
||
|
|
|
||
|
|
/* BT_CHIP_WAKE */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_CHIP_WAKE,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_HIGH);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void supersonic_config_bt_off(void)
|
||
|
|
{
|
||
|
|
#ifdef HTC_RFKILL_DBG
|
||
|
|
printk(KERN_INFO "-- RK OFF --\n");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* BT_RESET_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_RESET_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
/* BT_SHUTDOWN_N */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_SHUTDOWN_N,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
|
||
|
|
config_bt_table(supersonic_bt_off_table,
|
||
|
|
ARRAY_SIZE(supersonic_bt_off_table));
|
||
|
|
mdelay(5);
|
||
|
|
|
||
|
|
/* BT_RTS */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_UART1_RTS,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
/* BT_TX */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_UART1_TX,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
|
||
|
|
/* BT_CHIP_WAKE */
|
||
|
|
gpio_configure(SUPERSONIC_GPIO_BT_CHIP_WAKE,
|
||
|
|
GPIOF_DRIVE_OUTPUT | GPIOF_OUTPUT_LOW);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int bluetooth_set_power(void *data, bool blocked)
|
||
|
|
{
|
||
|
|
if (pre_state == blocked) {
|
||
|
|
#ifdef HTC_RFKILL_DBG
|
||
|
|
printk(KERN_INFO "-- SAME ST --\n");
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
} else
|
||
|
|
pre_state = blocked;
|
||
|
|
|
||
|
|
if (!blocked)
|
||
|
|
supersonic_config_bt_on();
|
||
|
|
else
|
||
|
|
supersonic_config_bt_off();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct rfkill_ops supersonic_rfkill_ops = {
|
||
|
|
.set_block = bluetooth_set_power,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int supersonic_rfkill_probe(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
int rc = 0;
|
||
|
|
bool default_state = true; /* off */
|
||
|
|
|
||
|
|
supersonic_config_bt_init(); /* bt gpio initial config */
|
||
|
|
|
||
|
|
bluetooth_set_power(NULL, default_state);
|
||
|
|
|
||
|
|
bt_rfk = rfkill_alloc(bt_name, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
|
||
|
|
&supersonic_rfkill_ops, NULL);
|
||
|
|
if (!bt_rfk) {
|
||
|
|
rc = -ENOMEM;
|
||
|
|
goto err_rfkill_reset;
|
||
|
|
}
|
||
|
|
|
||
|
|
rfkill_set_states(bt_rfk, default_state, false);
|
||
|
|
|
||
|
|
/* userspace cannot take exclusive control */
|
||
|
|
rc = rfkill_register(bt_rfk);
|
||
|
|
if (rc)
|
||
|
|
goto err_rfkill_reg;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_rfkill_reg:
|
||
|
|
rfkill_destroy(bt_rfk);
|
||
|
|
err_rfkill_reset:
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int supersonic_rfkill_remove(struct platform_device *dev)
|
||
|
|
{
|
||
|
|
rfkill_unregister(bt_rfk);
|
||
|
|
rfkill_destroy(bt_rfk);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct platform_driver supersonic_rfkill_driver = {
|
||
|
|
.probe = supersonic_rfkill_probe,
|
||
|
|
.remove = supersonic_rfkill_remove,
|
||
|
|
.driver = {
|
||
|
|
.name = "supersonic_rfkill",
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init supersonic_rfkill_init(void)
|
||
|
|
{
|
||
|
|
pre_state = -1;
|
||
|
|
if (!machine_is_supersonic())
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return platform_driver_register(&supersonic_rfkill_driver);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __exit supersonic_rfkill_exit(void)
|
||
|
|
{
|
||
|
|
platform_driver_unregister(&supersonic_rfkill_driver);
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(supersonic_rfkill_init);
|
||
|
|
module_exit(supersonic_rfkill_exit);
|
||
|
|
MODULE_DESCRIPTION("supersonic rfkill");
|
||
|
|
MODULE_AUTHOR("Nick Pelly <npelly@google.com>");
|
||
|
|
MODULE_LICENSE("GPL");
|