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/*
* Copyright (C) ST-Ericsson SA 2011
*
* Author: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <asm/mach-types.h>
#include <mach/irqs.h>
#include <plat/pincfg.h>
#include "pins.h"
#include <mach/cw1200_plat.h>
#include <linux/clk.h>
static void cw1200_release(struct device *dev);
static int cw1200_clk_ctrl(const struct cw1200_platform_data *pdata,
bool enable);
static int cw1200_power_ctrl(const struct cw1200_platform_data *pdata,
bool enable);
static struct resource cw1200_href_resources[] = {
{
.start = 215,
.end = 215,
.flags = IORESOURCE_IO,
.name = "cw1200_reset",
},
{
.start = NOMADIK_GPIO_TO_IRQ(216),
.end = NOMADIK_GPIO_TO_IRQ(216),
.flags = IORESOURCE_IRQ,
.name = "cw1200_irq",
},
};
static struct resource cw1200_href60_resources[] = {
{
.start = 85,
.end = 85,
.flags = IORESOURCE_IO,
.name = "cw1200_reset",
},
{
.start = NOMADIK_GPIO_TO_IRQ(4),
.end = NOMADIK_GPIO_TO_IRQ(4),
.flags = IORESOURCE_IRQ,
.name = "cw1200_irq",
},
};
static struct resource cw1200_u9500_resources[] = {
{
.start = 85,
.end = 85,
.flags = IORESOURCE_IO,
.name = "cw1200_reset",
},
{
.start = NOMADIK_GPIO_TO_IRQ(144),
.end = NOMADIK_GPIO_TO_IRQ(144),
.flags = IORESOURCE_IRQ,
.name = "cw1200_irq",
},
};
static struct cw1200_platform_data cw1200_platform_data = {
.clk_ctrl = cw1200_clk_ctrl,
};
static struct platform_device cw1200_device = {
.name = "cw1200_wlan",
.dev = {
.platform_data = &cw1200_platform_data,
.release = cw1200_release,
.init_name = "cw1200_wlan",
},
};
static struct clk *clk_dev;
const struct cw1200_platform_data *cw1200_get_platform_data(void)
{
return &cw1200_platform_data;
}
EXPORT_SYMBOL_GPL(cw1200_get_platform_data);
static int cw1200_pins_enable(bool enable)
{
struct ux500_pins *pins = NULL;
int ret = 0;
pins = ux500_pins_get("sdi1");
if (!pins) {
printk(KERN_ERR "cw1200: Pins are not found. "
"Check platform data.\n");
return -ENOENT;
}
if (enable)
ret = ux500_pins_enable(pins);
else
ret = ux500_pins_disable(pins);
if (ret)
printk(KERN_ERR "cw1200: Pins can not be %s: %d.\n",
enable ? "enabled" : "disabled",
ret);
ux500_pins_put(pins);
return ret;
}
static int cw1200_clk_ctrl(const struct cw1200_platform_data *pdata,
bool enable)
{
static const char *clock_name = "sys_clk_out";
int ret = 0;
if (enable) {
clk_dev = clk_get(&cw1200_device.dev, clock_name);
if (IS_ERR(clk_dev)) {
ret = PTR_ERR(clk_dev);
dev_warn(&cw1200_device.dev,
"%s: Failed to get clk '%s': %d\n",
__func__, clock_name, ret);
} else {
ret = clk_enable(clk_dev);
if (ret) {
clk_put(clk_dev);
dev_warn(&cw1200_device.dev,
"%s: Failed to enable clk '%s': %d\n",
__func__, clock_name, ret);
}
}
} else {
clk_disable(clk_dev);
clk_put(clk_dev);
}
return ret;
}
static int cw1200_power_ctrl(const struct cw1200_platform_data *pdata,
bool enable)
{
static const char *vdd_name = "vdd";
struct regulator *vdd;
int ret = 0;
vdd = regulator_get(&cw1200_device.dev, vdd_name);
if (IS_ERR(vdd)) {
ret = PTR_ERR(vdd);
dev_warn(&cw1200_device.dev,
"%s: Failed to get regulator '%s': %d\n",
__func__, vdd_name, ret);
} else {
if (enable)
ret = regulator_enable(vdd);
else
ret = regulator_disable(vdd);
if (ret) {
dev_warn(&cw1200_device.dev,
"%s: Failed to %s regulator '%s': %d\n",
__func__, enable ? "enable" : "disable",
vdd_name, ret);
}
regulator_put(vdd);
}
return ret;
}
int __init mop500_wlan_init(void)
{
int ret;
if (pins_for_u9500()) {
cw1200_device.num_resources = ARRAY_SIZE(cw1200_u9500_resources);
cw1200_device.resource = cw1200_u9500_resources;
} else if (machine_is_u8500() ||
machine_is_nomadik() ||
machine_is_snowball()) {
cw1200_device.num_resources = ARRAY_SIZE(cw1200_href_resources);
cw1200_device.resource = cw1200_href_resources;
} else if (machine_is_hrefv60()) {
cw1200_device.num_resources =
ARRAY_SIZE(cw1200_href60_resources);
cw1200_device.resource = cw1200_href60_resources;
} else {
dev_err(&cw1200_device.dev,
"Unsupported mach type %d "
"(check mach-types.h)\n",
__machine_arch_type);
return -ENOTSUPP;
}
if (machine_is_snowball())
cw1200_platform_data.mmc_id = "mmc2";
else
cw1200_platform_data.mmc_id = "mmc3";
cw1200_platform_data.reset = &cw1200_device.resource[0];
cw1200_platform_data.irq = &cw1200_device.resource[1];
cw1200_device.dev.release = cw1200_release;
if (machine_is_snowball())
cw1200_platform_data.power_ctrl = cw1200_power_ctrl;
ret = cw1200_pins_enable(true);
if (WARN_ON(ret))
return ret;
ret = platform_device_register(&cw1200_device);
if (ret)
cw1200_pins_enable(false);
return ret;
}
static void cw1200_release(struct device *dev)
{
cw1200_pins_enable(false);
}
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