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[ARM] 5150/1: Tosa: support built-in bluetooth power-up
The driver is pretty much generic and will be later shared with a few other devices, like hx4700 ipaq. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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5289fecda0
commit
16b32fd0a3
@ -273,4 +273,12 @@ config PXA_SSP
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tristate
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help
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Enable support for PXA2xx SSP ports
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config TOSA_BT
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tristate "Control the state of built-in bluetooth chip on Sharp SL-6000"
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depends on MACH_TOSA
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select RFKILL
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help
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This is a simple driver that is able to control
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the state of built in bluetooth chip on tosa.
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endif
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@ -58,3 +58,5 @@ obj-$(CONFIG_LEDS) += $(led-y)
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ifeq ($(CONFIG_PCI),y)
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obj-$(CONFIG_MACH_ARMCORE) += cm-x270-pci.o
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endif
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obj-$(CONFIG_TOSA_BT) += tosa-bt.o
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150
arch/arm/mach-pxa/tosa-bt.c
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150
arch/arm/mach-pxa/tosa-bt.c
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@ -0,0 +1,150 @@
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/*
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* Bluetooth built-in chip control
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*
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* Copyright (c) 2008 Dmitry Baryshkov
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/rfkill.h>
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#include <asm/arch/tosa_bt.h>
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static void tosa_bt_on(struct tosa_bt_data *data)
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{
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gpio_set_value(data->gpio_reset, 0);
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gpio_set_value(data->gpio_pwr, 1);
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gpio_set_value(data->gpio_reset, 1);
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mdelay(20);
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gpio_set_value(data->gpio_reset, 0);
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}
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static void tosa_bt_off(struct tosa_bt_data *data)
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{
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gpio_set_value(data->gpio_reset, 1);
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mdelay(10);
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gpio_set_value(data->gpio_pwr, 0);
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gpio_set_value(data->gpio_reset, 0);
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}
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static int tosa_bt_toggle_radio(void *data, enum rfkill_state state)
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{
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pr_info("BT_RADIO going: %s\n",
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state == RFKILL_STATE_ON ? "on" : "off");
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if (state == RFKILL_STATE_ON) {
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pr_info("TOSA_BT: going ON\n");
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tosa_bt_on(data);
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} else {
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pr_info("TOSA_BT: going OFF\n");
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tosa_bt_off(data);
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}
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return 0;
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}
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static int tosa_bt_probe(struct platform_device *dev)
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{
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int rc;
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struct rfkill *rfk;
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struct tosa_bt_data *data = dev->dev.platform_data;
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rc = gpio_request(data->gpio_reset, "Bluetooth reset");
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if (rc)
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goto err_reset;
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rc = gpio_direction_output(data->gpio_reset, 0);
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if (rc)
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goto err_reset_dir;
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rc = gpio_request(data->gpio_pwr, "Bluetooth power");
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if (rc)
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goto err_pwr;
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rc = gpio_direction_output(data->gpio_pwr, 0);
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if (rc)
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goto err_pwr_dir;
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rfk = rfkill_allocate(&dev->dev, RFKILL_TYPE_BLUETOOTH);
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if (!rfk) {
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rc = -ENOMEM;
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goto err_rfk_alloc;
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}
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rfk->name = "tosa-bt";
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rfk->toggle_radio = tosa_bt_toggle_radio;
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rfk->data = data;
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#ifdef CONFIG_RFKILL_LEDS
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rfk->led_trigger.name = "tosa-bt";
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#endif
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rc = rfkill_register(rfk);
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if (rc)
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goto err_rfkill;
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platform_set_drvdata(dev, rfk);
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return 0;
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err_rfkill:
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if (rfk)
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rfkill_free(rfk);
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rfk = NULL;
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err_rfk_alloc:
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tosa_bt_off(data);
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err_pwr_dir:
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gpio_free(data->gpio_pwr);
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err_pwr:
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err_reset_dir:
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gpio_free(data->gpio_reset);
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err_reset:
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return rc;
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}
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static int __devexit tosa_bt_remove(struct platform_device *dev)
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{
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struct tosa_bt_data *data = dev->dev.platform_data;
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struct rfkill *rfk = platform_get_drvdata(dev);
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platform_set_drvdata(dev, NULL);
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if (rfk)
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rfkill_unregister(rfk);
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rfk = NULL;
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tosa_bt_off(data);
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gpio_free(data->gpio_pwr);
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gpio_free(data->gpio_reset);
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return 0;
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}
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static struct platform_driver tosa_bt_driver = {
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.probe = tosa_bt_probe,
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.remove = __devexit_p(tosa_bt_remove),
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.driver = {
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.name = "tosa-bt",
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.owner = THIS_MODULE,
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},
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};
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static int __init tosa_bt_init(void)
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{
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return platform_driver_register(&tosa_bt_driver);
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}
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static void __exit tosa_bt_exit(void)
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{
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platform_driver_unregister(&tosa_bt_driver);
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}
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module_init(tosa_bt_init);
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module_exit(tosa_bt_exit);
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@ -31,6 +31,7 @@
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#include <linux/input.h>
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#include <linux/gpio.h>
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#include <linux/pda_power.h>
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#include <linux/rfkill.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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@ -40,6 +41,7 @@
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#include <asm/arch/i2c.h>
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#include <asm/arch/mmc.h>
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#include <asm/arch/udc.h>
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#include <asm/arch/tosa_bt.h>
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#include <asm/mach/arch.h>
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#include <asm/arch/tosa.h>
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@ -562,7 +564,7 @@ static struct gpio_led tosa_gpio_leds[] = {
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},
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{
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.name = "tosa:blue:bluetooth",
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.default_trigger = "none",
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.default_trigger = "tosa-bt",
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.gpio = TOSA_GPIO_BT_LED,
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},
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};
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@ -732,6 +734,18 @@ static struct platform_device tc6393xb_device = {
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.resource = tc6393xb_resources,
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};
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static struct tosa_bt_data tosa_bt_data = {
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.gpio_pwr = TOSA_GPIO_BT_PWR_EN,
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.gpio_reset = TOSA_GPIO_BT_RESET,
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};
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static struct platform_device tosa_bt_device = {
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.name = "tosa-bt",
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.id = -1,
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.dev.platform_data = &tosa_bt_data,
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};
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static struct platform_device *devices[] __initdata = {
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&tosascoop_device,
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&tosascoop_jc_device,
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@ -740,6 +754,7 @@ static struct platform_device *devices[] __initdata = {
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&tosakbd_device,
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&tosa_gpio_keys_device,
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&tosaled_device,
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&tosa_bt_device,
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};
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static void tosa_poweroff(void)
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@ -30,14 +30,13 @@
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#define TOSA_GPIO_SD_WP (TOSA_SCOOP_GPIO_BASE + 3)
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#define TOSA_GPIO_PWR_ON (TOSA_SCOOP_GPIO_BASE + 4)
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#define TOSA_SCOOP_AUD_PWR_ON SCOOP_GPCR_PA16
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#define TOSA_SCOOP_BT_RESET SCOOP_GPCR_PA17
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#define TOSA_SCOOP_BT_PWR_EN SCOOP_GPCR_PA18
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#define TOSA_GPIO_BT_RESET (TOSA_SCOOP_GPIO_BASE + 6)
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#define TOSA_GPIO_BT_PWR_EN (TOSA_SCOOP_GPIO_BASE + 7)
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#define TOSA_SCOOP_AC_IN_OL SCOOP_GPCR_PA19
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/* GPIO Direction 1 : output mode / 0:input mode */
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#define TOSA_SCOOP_IO_DIR (TOSA_SCOOP_PXA_VCORE1 | \
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TOSA_SCOOP_AUD_PWR_ON |\
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TOSA_SCOOP_BT_RESET | TOSA_SCOOP_BT_PWR_EN)
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TOSA_SCOOP_AUD_PWR_ON)
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/*
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* SCOOP2 jacket GPIOs
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22
include/asm-arm/arch-pxa/tosa_bt.h
Normal file
22
include/asm-arm/arch-pxa/tosa_bt.h
Normal file
@ -0,0 +1,22 @@
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/*
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* Tosa bluetooth built-in chip control.
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*
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* Later it may be shared with some other platforms.
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*
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* Copyright (c) 2008 Dmitry Baryshkov
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#ifndef TOSA_BT_H
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#define TOSA_BT_H
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struct tosa_bt_data {
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int gpio_pwr;
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int gpio_reset;
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};
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#endif
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