diff options
Diffstat (limited to 'arch/arm/mach-pxa/palmld-pcmcia.c')
-rw-r--r-- | arch/arm/mach-pxa/palmld-pcmcia.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/palmld-pcmcia.c b/arch/arm/mach-pxa/palmld-pcmcia.c new file mode 100644 index 000000000000..07e0f7438db1 --- /dev/null +++ b/arch/arm/mach-pxa/palmld-pcmcia.c @@ -0,0 +1,110 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/drivers/pcmcia/pxa2xx_palmld.c + * + * Driver for Palm LifeDrive PCMCIA + * + * Copyright (C) 2006 Alex Osborne <ato@meshy.org> + * Copyright (C) 2007-2011 Marek Vasut <marek.vasut@gmail.com> + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +#include <asm/mach-types.h> +#include <mach/palmld.h> +#include <pcmcia/soc_common.h> + +static struct gpio palmld_pcmcia_gpios[] = { + { GPIO_NR_PALMLD_PCMCIA_POWER, GPIOF_INIT_LOW, "PCMCIA Power" }, + { GPIO_NR_PALMLD_PCMCIA_RESET, GPIOF_INIT_HIGH,"PCMCIA Reset" }, +}; + +static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + int ret; + + ret = gpio_request_array(palmld_pcmcia_gpios, + ARRAY_SIZE(palmld_pcmcia_gpios)); + + skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMLD_PCMCIA_READY; + skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready"; + + return ret; +} + +static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios)); +} + +static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + state->detect = 1; /* always inserted */ + state->vs_3v = 1; + state->vs_Xv = 0; +} + +static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1); + gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET, + !!(state->flags & SS_RESET)); + + return 0; +} + +static struct pcmcia_low_level palmld_pcmcia_ops = { + .owner = THIS_MODULE, + + .first = 1, + .nr = 1, + + .hw_init = palmld_pcmcia_hw_init, + .hw_shutdown = palmld_pcmcia_hw_shutdown, + + .socket_state = palmld_pcmcia_socket_state, + .configure_socket = palmld_pcmcia_configure_socket, +}; + +static struct platform_device *palmld_pcmcia_device; + +static int __init palmld_pcmcia_init(void) +{ + int ret; + + if (!machine_is_palmld()) + return -ENODEV; + + palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); + if (!palmld_pcmcia_device) + return -ENOMEM; + + ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops, + sizeof(palmld_pcmcia_ops)); + + if (!ret) + ret = platform_device_add(palmld_pcmcia_device); + + if (ret) + platform_device_put(palmld_pcmcia_device); + + return ret; +} + +static void __exit palmld_pcmcia_exit(void) +{ + platform_device_unregister(palmld_pcmcia_device); +} + +module_init(palmld_pcmcia_init); +module_exit(palmld_pcmcia_exit); + +MODULE_AUTHOR("Alex Osborne <ato@meshy.org>," + " Marek Vasut <marek.vasut@gmail.com>"); +MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive"); +MODULE_ALIAS("platform:pxa2xx-pcmcia"); +MODULE_LICENSE("GPL"); |