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author | Marek VaĊĦut <marek.vasut@gmail.com> | 2008-07-07 17:28:59 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-07-10 12:15:32 +0100 |
commit | 359784084f3da86e2c7621fd9266e04b50287834 (patch) | |
tree | 371c9f83d2a2765043580aa83002036eaf09da5d /drivers/pcmcia/pxa2xx_palmtx.c | |
parent | b5e4ad57eeffef0ac274413f83be4ef903719ea4 (diff) | |
download | kernel_samsung_smdk4412-359784084f3da86e2c7621fd9266e04b50287834.zip kernel_samsung_smdk4412-359784084f3da86e2c7621fd9266e04b50287834.tar.gz kernel_samsung_smdk4412-359784084f3da86e2c7621fd9266e04b50287834.tar.bz2 |
[ARM] 5154/1: PalmTX PCMCIA
This patch adds PCMCIA support for PalmTX handheld computer.
There is one chip hard-soldered to slot0, another slot is
not in use and not accessible.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/pcmcia/pxa2xx_palmtx.c')
-rw-r--r-- | drivers/pcmcia/pxa2xx_palmtx.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/pcmcia/pxa2xx_palmtx.c b/drivers/pcmcia/pxa2xx_palmtx.c new file mode 100644 index 0000000..4abde19 --- /dev/null +++ b/drivers/pcmcia/pxa2xx_palmtx.c @@ -0,0 +1,118 @@ +/* + * linux/drivers/pcmcia/pxa2xx_palmtx.c + * + * Driver for Palm T|X PCMCIA + * + * Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <asm/mach-types.h> + +#include <asm/arch/gpio.h> +#include <asm/arch/palmtx.h> + +#include "soc_common.h" + +static int palmtx_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + skt->irq = IRQ_GPIO(GPIO_NR_PALMTX_PCMCIA_READY); + return 0; +} + +static void palmtx_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ +} + +static void palmtx_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + state->detect = 1; /* always inserted */ + state->ready = !!gpio_get_value(GPIO_NR_PALMTX_PCMCIA_READY); + state->bvd1 = 1; + state->bvd2 = 1; + state->wrprot = 0; + state->vs_3v = 1; + state->vs_Xv = 0; +} + +static int +palmtx_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER1, 1); + gpio_set_value(GPIO_NR_PALMTX_PCMCIA_POWER2, 1); + gpio_set_value(GPIO_NR_PALMTX_PCMCIA_RESET, + !!(state->flags & SS_RESET)); + + return 0; +} + +static void palmtx_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ +} + +static void palmtx_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ +} + +static struct pcmcia_low_level palmtx_pcmcia_ops = { + .owner = THIS_MODULE, + + .first = 0, + .nr = 1, + + .hw_init = palmtx_pcmcia_hw_init, + .hw_shutdown = palmtx_pcmcia_hw_shutdown, + + .socket_state = palmtx_pcmcia_socket_state, + .configure_socket = palmtx_pcmcia_configure_socket, + + .socket_init = palmtx_pcmcia_socket_init, + .socket_suspend = palmtx_pcmcia_socket_suspend, +}; + +static struct platform_device *palmtx_pcmcia_device; + +static int __init palmtx_pcmcia_init(void) +{ + int ret; + + if (!machine_is_palmtx()) + return -ENODEV; + + palmtx_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); + if (!palmtx_pcmcia_device) + return -ENOMEM; + + ret = platform_device_add_data(palmtx_pcmcia_device, &palmtx_pcmcia_ops, + sizeof(palmtx_pcmcia_ops)); + + if (!ret) + ret = platform_device_add(palmtx_pcmcia_device); + + if (ret) + platform_device_put(palmtx_pcmcia_device); + + return ret; +} + +static void __exit palmtx_pcmcia_exit(void) +{ + platform_device_unregister(palmtx_pcmcia_device); +} + +fs_initcall(palmtx_pcmcia_init); +module_exit(palmtx_pcmcia_exit); + +MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); +MODULE_DESCRIPTION("PCMCIA support for Palm T|X"); +MODULE_ALIAS("platform:pxa2xx-pcmcia"); +MODULE_LICENSE("GPL"); |