-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add support for the Arcom/Eurotech Viper SBC CompactFlash card slot
The Arcom/Eurotech Viper needs some extra care to run. On this board, the PC104 connector is actually wired to the second PCMCIA slot. Therefore, this second socket needs to be enabled, despite not being managed by the PCMCIA code. I'd rather have the MECR setup in the platform support code so I could, for example, use the PC104 bus without having the PCMCIA module loaded. Signed-off-by: Marc Zyngier <marc.zyngier@altran.com>
- Loading branch information
Marc Zyngier
authored and
Marc Zyngier
committed
Sep 9, 2008
1 parent
175ff20
commit 20f18ff
Showing
4 changed files
with
203 additions
and
23 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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"); |