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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-11 21:09:45 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-11 21:09:45 +0400 |
commit | 7cc4e87f912bbefa440a51856b8d076e5d1f554a (patch) | |
tree | 1b8df8683f3de37d2e8211ffa8d151f60d59af62 /drivers/pcmcia/pxa2xx_viper.c | |
parent | 5ba2f67afb02c5302b2898949ed6fc3b3d37dcf1 (diff) | |
parent | 69fc7eed5f56bce15b239e5110de2575a6970df4 (diff) | |
download | linux-7cc4e87f912bbefa440a51856b8d076e5d1f554a.tar.xz |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits)
[ARM] 5300/1: fixup spitz reset during boot
[ARM] 5295/1: make ZONE_DMA optional
[ARM] 5239/1: Palm Zire 72 power management support
[ARM] 5298/1: Drop desc_handle_irq()
[ARM] 5297/1: [KS8695] Fix two compile-time warnings
[ARM] 5296/1: [KS8695] Replace macro's with trailing underscores.
[ARM] pxa: allow multi-machine PCMCIA builds
[ARM] pxa: add preliminary CPUFREQ support for PXA3xx
[ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h
[ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c
[ARM] pxa/zylonite: add support for USB OHCI
[ARM] ohci-pxa27x: use ioremap() and offset for register access
[ARM] ohci-pxa27x: introduce pxa27x_clear_otgph()
[ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource
[ARM] ohci-pxa27x: move OHCI controller specific registers into the driver
[ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers
[ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c
[ARM] pxa: simplify DMA register definitions
[ARM] pxa: make additional DCSR bits valid for PXA3xx
[ARM] pxa: move i2c register and bit definitions into i2c-pxa.c
...
Fixed up conflicts in
arch/arm/mach-versatile/core.c
sound/soc/pxa/pxa2xx-ac97.c
sound/soc/pxa/pxa2xx-i2s.c
manually.
Diffstat (limited to 'drivers/pcmcia/pxa2xx_viper.c')
-rw-r--r-- | drivers/pcmcia/pxa2xx_viper.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/pcmcia/pxa2xx_viper.c b/drivers/pcmcia/pxa2xx_viper.c new file mode 100644 index 000000000000..dd10481be7bf --- /dev/null +++ b/drivers/pcmcia/pxa2xx_viper.c @@ -0,0 +1,179 @@ +/* + * VIPER PCMCIA support + * Copyright 2004 Arcom Control Systems + * + * Maintained by Marc Zyngier <maz@misterjones.org> + * <marc.zyngier@altran.com> + * + * Based on: + * iPAQ h2200 PCMCIA support + * Copyright 2004 Koen Kooi <koen@vestingbar.nl> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +#include <pcmcia/ss.h> + +#include <asm/irq.h> + +#include <mach/pxa-regs.h> +#include <mach/viper.h> +#include <asm/mach-types.h> + +#include "soc_common.h" +#include "pxa2xx_base.h" + +static struct pcmcia_irqs irqs[] = { + { 0, gpio_to_irq(VIPER_CF_CD_GPIO), "PCMCIA_CD" } +}; + +static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + unsigned long flags; + + skt->irq = gpio_to_irq(VIPER_CF_RDY_GPIO); + + if (gpio_request(VIPER_CF_CD_GPIO, "CF detect")) + goto err_request_cd; + + if (gpio_request(VIPER_CF_RDY_GPIO, "CF ready")) + goto err_request_rdy; + + if (gpio_request(VIPER_CF_POWER_GPIO, "CF power")) + goto err_request_pwr; + + local_irq_save(flags); + + /* GPIO 82 is the CF power enable line. initially off */ + if (gpio_direction_output(VIPER_CF_POWER_GPIO, 0) || + gpio_direction_input(VIPER_CF_CD_GPIO) || + gpio_direction_input(VIPER_CF_RDY_GPIO)) { + local_irq_restore(flags); + goto err_dir; + } + + local_irq_restore(flags); + + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); + +err_dir: + gpio_free(VIPER_CF_POWER_GPIO); +err_request_pwr: + gpio_free(VIPER_CF_RDY_GPIO); +err_request_rdy: + gpio_free(VIPER_CF_CD_GPIO); +err_request_cd: + printk(KERN_ERR "viper: Failed to setup PCMCIA GPIOs\n"); + return -1; +} + +/* + * Release all resources. + */ +static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); + gpio_free(VIPER_CF_POWER_GPIO); + gpio_free(VIPER_CF_RDY_GPIO); + gpio_free(VIPER_CF_CD_GPIO); +} + +static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + state->detect = gpio_get_value(VIPER_CF_CD_GPIO) ? 0 : 1; + state->ready = gpio_get_value(VIPER_CF_RDY_GPIO) ? 1 : 0; + state->bvd1 = 1; + state->bvd2 = 1; + state->wrprot = 0; + state->vs_3v = 1; /* Can only apply 3.3V */ + state->vs_Xv = 0; +} + +static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + /* Silently ignore Vpp, output enable, speaker enable. */ + viper_cf_rst(state->flags & SS_RESET); + + /* Apply socket voltage */ + switch (state->Vcc) { + case 0: + gpio_set_value(VIPER_CF_POWER_GPIO, 0); + break; + case 33: + gpio_set_value(VIPER_CF_POWER_GPIO, 1); + break; + default: + printk(KERN_ERR "%s: Unsupported Vcc:%d\n", + __func__, state->Vcc); + return -1; + } + + return 0; +} + +static void viper_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ +} + +static void viper_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ +} + +static struct pcmcia_low_level viper_pcmcia_ops __initdata = { + .owner = THIS_MODULE, + .hw_init = viper_pcmcia_hw_init, + .hw_shutdown = viper_pcmcia_hw_shutdown, + .socket_state = viper_pcmcia_socket_state, + .configure_socket = viper_pcmcia_configure_socket, + .socket_init = viper_pcmcia_socket_init, + .socket_suspend = viper_pcmcia_socket_suspend, + .nr = 1, +}; + +static struct platform_device *viper_pcmcia_device; + +static int __init viper_pcmcia_init(void) +{ + int ret; + + if (!machine_is_viper()) + return -ENODEV; + + viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); + if (!viper_pcmcia_device) + return -ENOMEM; + + ret = platform_device_add_data(viper_pcmcia_device, + &viper_pcmcia_ops, + sizeof(viper_pcmcia_ops)); + + if (!ret) + ret = platform_device_add(viper_pcmcia_device); + + if (ret) + platform_device_put(viper_pcmcia_device); + + return ret; +} + +static void __exit viper_pcmcia_exit(void) +{ + platform_device_unregister(viper_pcmcia_device); +} + +module_init(viper_pcmcia_init); +module_exit(viper_pcmcia_exit); + +MODULE_LICENSE("GPL"); |