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/* linux/arch/arm/mach-xxxx/board-midas-modems.c
* Copyright (C) 2010 Samsung Electronics. All rights reserved.
*
* 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/platform_data/modem.h>
/* umts target platform data */
static struct modem_io_t umts_io_devices[] = {
[0] = {
.name = "umts_boot0",
.id = 0x0,
.format = IPC_BOOT,
.io_type = IODEV_MISC,
.links = LINKTYPE(LINKDEV_C2C),
},
[1] = {
.name = "umts_ipc0",
.id = 0x1,
.format = IPC_FMT,
.io_type = IODEV_MISC,
.links = LINKTYPE(LINKDEV_HSIC),
},
[2] = {
.name = "umts_rfs0",
.id = 0x41,
.format = IPC_RFS,
.io_type = IODEV_MISC,
.links = LINKTYPE(LINKDEV_HSIC),
},
[3] = {
.name = "multipdp",
.id = 0x1,
.format = IPC_MULTI_RAW,
.io_type = IODEV_DUMMY,
.links = LINKTYPE(LINKDEV_HSIC),
},
[4] = {
.name = "rmnet0",
.id = 0x2A,
.format = IPC_RAW,
.io_type = IODEV_NET,
.links = LINKTYPE(LINKDEV_HSIC),
},
[5] = {
.name = "rmnet1",
.id = 0x2B,
.format = IPC_RAW,
.io_type = IODEV_NET,
.links = LINKTYPE(LINKDEV_HSIC),
},
[6] = {
.name = "rmnet2",
.id = 0x2C,
.format = IPC_RAW,
.io_type = IODEV_NET,
.links = LINKTYPE(LINKDEV_HSIC),
},
[7] = {
.name = "umts_router",
.id = 0x39,
.format = IPC_RAW,
.io_type = IODEV_MISC,
.links = LINKTYPE(LINKDEV_HSIC),
},
[8] = {
.name = "umts_csd",
.id = 0x21,
.format = IPC_RAW,
.io_type = IODEV_MISC,
.links = LINKTYPE(LINKDEV_HSIC),
},
};
/* To get modem state, register phone active irq using resource */
static struct resource umts_modem_res[] = {
[0] = {
.name = "umts_phone_active",
.start = PHONE_ACTIVE_IRQ,
.end = PHONE_ACTIVE_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static int umts_link_ldo_enble(bool enable)
{
/* Exynos HSIC V1.2 LDO was controlled by kernel */
return 0;
}
static struct modemlink_pm_data modem_link_pm_data = {
.name = "link_pm",
.link_ldo_enable = umts_link_ldo_enble,
.gpio_link_enable = 0,
.gpio_link_active = GPIO_ACTIVE_STATE,
.gpio_link_hostwake = GPIO_IPC_HOST_WAKEUP,
.gpio_link_slavewake = GPIO_IPC_SLAVE_WAKEUP,
};
static struct modemlink_pm_link_activectl active_ctl;
static struct modem_data umts_modem_data = {
.name = "xmm6262",
.gpio_cp_on = CP_ON,
.gpio_reset_req_n = CP_RESET_REQ_N,
.gpio_cp_reset = CP_PMU_RST_N,
.gpio_pda_active = PDA_ACTIVE,
.gpio_phone_active = PHONE_ACTIVE,
.gpio_cp_dump_int = CP_DUMP_INT,
.gpio_flm_uart_sel = 0,
.gpio_cp_warm_reset = 0,
.modem_type = IMC_XMM6262,
.link_types = LINKTYPE(LINKDEV_HSIC) | LINKTYPE(LINKDEV_C2C),
.modem_net = UMTS_NETWORK,
.use_handover = false,
.num_iodevs = ARRAY_SIZE(umts_io_devices),
.iodevs = umts_io_devices,
.link_pm_data = &modem_link_pm_data,
};
/* HSIC specific function */
void set_host_states(struct platform_device *pdev, int type)
{
if (active_ctl.gpio_initialized) {
pr_err(" [MODEM_IF] Active States =%d, %s\n", type, pdev->name);
gpio_direction_output(modem_link_pm_data.gpio_link_active,
type);
} else
active_ctl.gpio_request_host_active = 1;
}
static struct platform_device umts_modem = {
.name = "modem_if",
.id = -1,
.num_resources = ARRAY_SIZE(umts_modem_res),
.resource = umts_modem_res,
.dev = {
.platform_data = &umts_modem_data,
},
};
struct io_list {
unsigned num;
char *name;
unsigned val;
};
static void umts_modem_cfg_gpio(void)
{
unsigned gpio_reset_req_n = umts_modem_data.gpio_reset_req_n;
unsigned gpio_cp_on = umts_modem_data.gpio_cp_on;
unsigned gpio_cp_rst = umts_modem_data.gpio_cp_reset;
unsigned gpio_pda_active = umts_modem_data.gpio_pda_active;
unsigned gpio_phone_active = umts_modem_data.gpio_phone_active;
if (gpio_reset_req_n) {
gpio_request(gpio_reset_req_n, "CP_RST_REQ");
gpio_direction_output(gpio_reset_req_n, 0);
}
if (gpio_cp_on) {
gpio_request(gpio_cp_on, "CP_ON");
gpio_direction_output(gpio_cp_on, 0);
}
if (gpio_cp_rst) {
gpio_request(gpio_cp_rst, "CP_RST");
gpio_direction_output(gpio_cp_rst, 0);
}
if (gpio_pda_active) {
gpio_request(gpio_pda_active, "PDA_ACTIVE");
gpio_direction_output(gpio_pda_active, 0);
}
if (gpio_phone_active) {
gpio_request(gpio_phone_active, "PHONE_ACTIVE");
gpio_direction_input(gpio_phone_active);
}
}
static void modem_link_pm_config_gpio(void)
{
int i, err;
unsigned gpio_num;
struct io_list gpio_list[] = {
{modem_link_pm_data.gpio_link_enable, "hsic_en", 1},
{modem_link_pm_data.gpio_link_active, "host_active", 0},
{modem_link_pm_data.gpio_link_hostwake, "host_wakeup", 0},
{modem_link_pm_data.gpio_link_slavewake, "slave_wakeup", 0},
};
unsigned gpio_link_hostwake = modem_link_pm_data.gpio_link_hostwake;
for (i = 0; i < ARRAY_SIZE(gpio_list); i++) {
gpio_num = gpio_list[i].num;
if (gpio_num) {
err = gpio_request(gpio_num, gpio_list[i].name);
if (err) {
pr_err("request gpio fail %s: %d\n",
gpio_list[i].name, err);
continue;
}
gpio_direction_output(gpio_num, gpio_list[i].val);
pr_debug("%s gpio cfg done\n", gpio_list[i].name);
}
}
if (gpio_link_hostwake)
irq_set_irq_type(gpio_to_irq(gpio_link_hostwake),
IRQ_TYPE_EDGE_BOTH);
active_ctl.gpio_initialized = 1;
if (active_ctl.gpio_request_host_active) {
pr_err(" [MODEM_IF] Active States = 1, %s\n", __func__);
gpio_direction_output(modem_link_pm_data.gpio_link_active, 1);
}
printk(KERN_INFO "modem_link_pm_config_gpio done\n");
}
static int __init init_modem(void)
{
pr_debug("[BOARD] <%s> Invoked!!!\n", __func__);
umts_modem_cfg_gpio();
modem_link_pm_config_gpio();
platform_device_register(&umts_modem);
return 0;
}
late_initcall(init_modem);
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