diff options
Diffstat (limited to 'arch/arm/mach-ux500/board-mop500-wlan.c')
| -rw-r--r-- | arch/arm/mach-ux500/board-mop500-wlan.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/board-mop500-wlan.c b/arch/arm/mach-ux500/board-mop500-wlan.c new file mode 100644 index 00000000000..821baae5273 --- /dev/null +++ b/arch/arm/mach-ux500/board-mop500-wlan.c @@ -0,0 +1,232 @@ +/* + * 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/module.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 <linux/clk.h> +#include <mach/cw1200_plat.h> + +#include "pins.h" + +static void cw1200_release(struct device *dev); +static int cw1200_power_ctrl(const struct cw1200_platform_data *pdata, + bool enable); +static int cw1200_clk_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", + }, +}; + +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_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; +} + +static int cw1200_clk_ctrl(const struct cw1200_platform_data *pdata, + bool enable) +{ + static const char *clock_name = "sys_clk_out"; + struct clk *clk_dev; + int ret = 0; + + 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 { + + if (enable) + ret = clk_enable(clk_dev); + else + clk_disable(clk_dev); + + if (ret) { + dev_warn(&cw1200_device.dev, + "%s: Failed to %s clk enable: %d\n", + __func__, clock_name, ret); + } + } + + return ret; +} + +int __init mop500_wlan_init(struct device *parent) +{ + 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() || machine_is_u8520() + || machine_is_u9540()) { + 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; + + cw1200_device.dev.parent = parent; + 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); +} |