forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
140 lines
3.0 KiB
140 lines
3.0 KiB
// SPDX-License-Identifier: GPL-1.0+ |
|
// |
|
// Copyright (c) Arnaud Patard <[email protected]> |
|
// |
|
// S3C2410 bluetooth "driver" |
|
|
|
#include <linux/module.h> |
|
#include <linux/platform_device.h> |
|
#include <linux/delay.h> |
|
#include <linux/string.h> |
|
#include <linux/ctype.h> |
|
#include <linux/leds.h> |
|
#include <linux/gpio.h> |
|
#include <linux/rfkill.h> |
|
|
|
#include "gpio-cfg.h" |
|
#include "regs-gpio.h" |
|
#include "gpio-samsung.h" |
|
|
|
#include "h1940.h" |
|
|
|
#define DRV_NAME "h1940-bt" |
|
|
|
/* Bluetooth control */ |
|
static void h1940bt_enable(int on) |
|
{ |
|
if (on) { |
|
/* Power on the chip */ |
|
gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 1); |
|
/* Reset the chip */ |
|
mdelay(10); |
|
|
|
gpio_set_value(S3C2410_GPH(1), 1); |
|
mdelay(10); |
|
gpio_set_value(S3C2410_GPH(1), 0); |
|
|
|
h1940_led_blink_set(NULL, GPIO_LED_BLINK, NULL, NULL); |
|
} |
|
else { |
|
gpio_set_value(S3C2410_GPH(1), 1); |
|
mdelay(10); |
|
gpio_set_value(S3C2410_GPH(1), 0); |
|
mdelay(10); |
|
gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 0); |
|
|
|
h1940_led_blink_set(NULL, GPIO_LED_NO_BLINK_LOW, NULL, NULL); |
|
} |
|
} |
|
|
|
static int h1940bt_set_block(void *data, bool blocked) |
|
{ |
|
h1940bt_enable(!blocked); |
|
return 0; |
|
} |
|
|
|
static const struct rfkill_ops h1940bt_rfkill_ops = { |
|
.set_block = h1940bt_set_block, |
|
}; |
|
|
|
static int h1940bt_probe(struct platform_device *pdev) |
|
{ |
|
struct rfkill *rfk; |
|
int ret = 0; |
|
|
|
ret = gpio_request(S3C2410_GPH(1), dev_name(&pdev->dev)); |
|
if (ret) { |
|
dev_err(&pdev->dev, "could not get GPH1\n"); |
|
return ret; |
|
} |
|
|
|
ret = gpio_request(H1940_LATCH_BLUETOOTH_POWER, dev_name(&pdev->dev)); |
|
if (ret) { |
|
gpio_free(S3C2410_GPH(1)); |
|
dev_err(&pdev->dev, "could not get BT_POWER\n"); |
|
return ret; |
|
} |
|
|
|
/* Configures BT serial port GPIOs */ |
|
s3c_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0); |
|
s3c_gpio_setpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE); |
|
s3c_gpio_cfgpin(S3C2410_GPH(1), S3C2410_GPIO_OUTPUT); |
|
s3c_gpio_setpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE); |
|
s3c_gpio_cfgpin(S3C2410_GPH(2), S3C2410_GPH2_TXD0); |
|
s3c_gpio_setpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE); |
|
s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0); |
|
s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE); |
|
|
|
rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH, |
|
&h1940bt_rfkill_ops, NULL); |
|
if (!rfk) { |
|
ret = -ENOMEM; |
|
goto err_rfk_alloc; |
|
} |
|
|
|
ret = rfkill_register(rfk); |
|
if (ret) |
|
goto err_rfkill; |
|
|
|
platform_set_drvdata(pdev, rfk); |
|
|
|
return 0; |
|
|
|
err_rfkill: |
|
rfkill_destroy(rfk); |
|
err_rfk_alloc: |
|
return ret; |
|
} |
|
|
|
static int h1940bt_remove(struct platform_device *pdev) |
|
{ |
|
struct rfkill *rfk = platform_get_drvdata(pdev); |
|
|
|
platform_set_drvdata(pdev, NULL); |
|
gpio_free(S3C2410_GPH(1)); |
|
|
|
if (rfk) { |
|
rfkill_unregister(rfk); |
|
rfkill_destroy(rfk); |
|
} |
|
rfk = NULL; |
|
|
|
h1940bt_enable(0); |
|
|
|
return 0; |
|
} |
|
|
|
|
|
static struct platform_driver h1940bt_driver = { |
|
.driver = { |
|
.name = DRV_NAME, |
|
}, |
|
.probe = h1940bt_probe, |
|
.remove = h1940bt_remove, |
|
}; |
|
|
|
module_platform_driver(h1940bt_driver); |
|
|
|
MODULE_AUTHOR("Arnaud Patard <[email protected]>"); |
|
MODULE_DESCRIPTION("Driver for the iPAQ H1940 bluetooth chip"); |
|
MODULE_LICENSE("GPL");
|
|
|