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/* /linux/drivers/misc/modem_if/modem_modemctl_device_sprd8803.c
*
* Copyright (C) 2010 Google, Inc.
* Copyright (C) 2010 Samsung Electronics.
*
* 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.
*
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/cma.h>
#include <plat/devs.h>
#include <linux/platform_data/modem.h>
#include "modem_prj.h"
#include <plat/gpio-cfg.h>
spinlock_t irq_lock;
int irq_lock_flag;
int sprd_boot_done;
extern int spi_thread_restart(void);
static int sprd8803_on(struct modem_ctl *mc)
{
if (!mc->gpio_cp_on || !mc->gpio_pda_active) {
pr_err("[MODEM_IF] no gpio data\n");
return -ENXIO;
}
s3c_gpio_cfgpin(EXYNOS4_GPA1(4), S3C_GPIO_SFN(2));
s3c_gpio_cfgpin(EXYNOS4_GPA1(5), S3C_GPIO_SFN(2));
#ifdef CONFIG_SEC_DUAL_MODEM_MODE
gpio_set_value(mc->gpio_sim_io_sel, 1);
gpio_set_value(mc->gpio_cp_ctrl1, 0);
gpio_set_value(mc->gpio_cp_ctrl2, 1);
#endif
msleep(100);
pr_info("[MODEM_IF] %s\n", __func__);
gpio_set_value(mc->gpio_cp_on, 1);
gpio_set_value(mc->gpio_pda_active, 1);
spin_lock(&irq_lock);
if (!irq_lock_flag) {
enable_irq(mc->irq_phone_active);
enable_irq(gpio_to_irq(mc->gpio_cp_dump_int));
enable_irq_wake(mc->irq_phone_active);
enable_irq_wake(gpio_to_irq(mc->gpio_cp_dump_int));
irq_lock_flag = 1;
}
spin_unlock(&irq_lock);
mc->phone_state = STATE_BOOTING;
return 0;
}
static int sprd8803_off(struct modem_ctl *mc)
{
pr_info("[MODEM_IF] %s\n", __func__);
if (!mc->gpio_cp_on) {
mif_err("no gpio data\n");
return -ENXIO;
}
gpio_set_value(mc->gpio_cp_on, 0);
spin_lock(&irq_lock);
if (irq_lock_flag) {
disable_irq(mc->irq_phone_active);
disable_irq(gpio_to_irq(mc->gpio_cp_dump_int));
disable_irq_wake(mc->irq_phone_active);
disable_irq_wake(gpio_to_irq(mc->gpio_cp_dump_int));
irq_lock_flag = 0;
}
spin_unlock(&irq_lock);
mc->phone_state = STATE_OFFLINE;
return 0;
}
static int sprd8803_reset(struct modem_ctl *mc)
{
pr_info("[MODEM_IF] %s\n", __func__);
spi_thread_restart();
return 0;
}
static int sprd8803_boot_on(struct modem_ctl *mc)
{
pr_info("[MODEM_IF] %s %d\n", __func__, mc->phone_state);
return mc->phone_state;
}
static int sprd8803_boot_off(struct modem_ctl *mc)
{
pr_info("[MODEM_IF] %s\n", __func__);
spi_sema_init();
return 0;
}
static int sprd8803_dump_reset(struct modem_ctl *mc)
{
pr_info("[MODEM_IF] %s\n", __func__);
if (!mc->gpio_ap_cp_int2)
return -ENXIO;
gpio_set_value(mc->gpio_ap_cp_int2, 0);
mc->phone_state = STATE_OFFLINE;
msleep(100);
gpio_set_value(mc->gpio_ap_cp_int2, 1);
return 0;
}
static irqreturn_t phone_active_irq_handler(int irq, void *_mc)
{
int phone_reset = 0;
int phone_active_value = 0;
int cp_dump_value = 0;
int phone_state = 0;
struct modem_ctl *mc = (struct modem_ctl *)_mc;
disable_irq_nosync(mc->irq_phone_active);
if (!mc->gpio_phone_active ||
!mc->gpio_cp_dump_int) {
pr_err("[MODEM_IF] no gpio data\n");
goto exit;
}
if (!sprd_boot_done)
goto exit;
phone_active_value = gpio_get_value(mc->gpio_phone_active);
cp_dump_value = gpio_get_value(mc->gpio_cp_dump_int);
pr_err("PA EVENT : pa=%d, cp_dump=%d\n",
phone_active_value, cp_dump_value);
if (phone_active_value)
phone_state = STATE_ONLINE;
else
phone_state = STATE_OFFLINE;
if (phone_active_value && cp_dump_value)
phone_state = STATE_CRASH_EXIT;
if (mc->iod && mc->iod->modem_state_changed)
mc->iod->modem_state_changed(mc->iod, phone_state);
if (mc->bootd && mc->bootd->modem_state_changed)
mc->bootd->modem_state_changed(mc->bootd, phone_state);
exit:
enable_irq(mc->irq_phone_active);
return IRQ_HANDLED;
}
static void sprd8803_get_ops(struct modem_ctl *mc)
{
mc->ops.modem_on = sprd8803_on;
mc->ops.modem_off = sprd8803_off;
mc->ops.modem_reset = sprd8803_reset;
mc->ops.modem_boot_on = sprd8803_boot_on;
mc->ops.modem_boot_off = sprd8803_boot_off;
mc->ops.modem_dump_reset = sprd8803_dump_reset;
mc->ops.modem_force_crash_exit = sprd8803_dump_reset;
}
int sprd8803_init_modemctl_device(struct modem_ctl *mc,
struct modem_data *pdata)
{
int ret = 0;
int irq_cp_dump_int;
struct platform_device *pdev;
mc->gpio_cp_on = pdata->gpio_cp_on;
mc->gpio_pda_active = pdata->gpio_pda_active;
mc->gpio_phone_active = pdata->gpio_phone_active;
mc->gpio_cp_dump_int = pdata->gpio_cp_dump_int;
mc->gpio_ap_cp_int1 = pdata->gpio_ap_cp_int1;
mc->gpio_ap_cp_int2 = pdata->gpio_ap_cp_int2;
#ifdef CONFIG_SEC_DUAL_MODEM_MODE
mc->gpio_sim_io_sel = pdata->gpio_sim_io_sel;
mc->gpio_cp_ctrl1 = pdata->gpio_cp_ctrl1;
mc->gpio_cp_ctrl2 = pdata->gpio_cp_ctrl2;
#endif
pdev = to_platform_device(mc->dev);
mc->irq_phone_active = gpio_to_irq(mc->gpio_phone_active);
irq_cp_dump_int = gpio_to_irq(mc->gpio_cp_dump_int);
sprd8803_get_ops(mc);
ret = request_irq(mc->irq_phone_active, phone_active_irq_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"phone_active", mc);
if (ret) {
pr_err("[MODEM_IF] %s: failed to request_irq:%d\n",
__func__, ret);
return ret;
}
ret = enable_irq_wake(mc->irq_phone_active);
if (ret) {
pr_err("[MODEM_IF] %s: failed to enable_irq_wake:%d\n",
__func__, ret);
free_irq(mc->irq_phone_active, mc);
}
ret = request_irq(irq_cp_dump_int, phone_active_irq_handler,
IRQF_TRIGGER_RISING,
"cp_dump_int", mc);
if (ret) {
pr_err("[MODEM_IF] %s: failed to request_irq:%d\n",
__func__, ret);
return ret;
}
ret = enable_irq_wake(irq_cp_dump_int);
if (ret) {
pr_err("[MODEM_IF] %s: failed to enable_irq_wake:%d\n",
__func__, ret);
free_irq(irq_cp_dump_int, mc);
}
irq_lock_flag = 1;
spin_lock_init(&irq_lock);
spin_lock(&irq_lock);
if (irq_lock_flag) {
disable_irq(mc->irq_phone_active);
disable_irq(gpio_to_irq(mc->gpio_cp_dump_int));
disable_irq_wake(mc->irq_phone_active);
disable_irq_wake(gpio_to_irq(mc->gpio_cp_dump_int));
irq_lock_flag = 0;
}
spin_unlock(&irq_lock);
return ret;
}
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