| /* |
| * drivers/pcmcia/sa1100_h3600.c |
| * |
| * PCMCIA implementation routines for H3600 |
| * |
| */ |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/device.h> |
| #include <linux/interrupt.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| |
| #include <mach/hardware.h> |
| #include <asm/irq.h> |
| #include <asm/mach-types.h> |
| #include <mach/h3xxx.h> |
| |
| #include "sa1100_generic.h" |
| |
| static struct pcmcia_irqs irqs[] = { |
| { .sock = 0, .str = "PCMCIA CD0" }, /* .irq will be filled later */ |
| { .sock = 1, .str = "PCMCIA CD1" } |
| }; |
| |
| static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| { |
| int err; |
| |
| switch (skt->nr) { |
| case 0: |
| err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ0, "PCMCIA IRQ0"); |
| if (err) |
| goto err00; |
| err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ0); |
| if (err) |
| goto err01; |
| skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ0); |
| |
| err = gpio_request(H3XXX_GPIO_PCMCIA_CD0, "PCMCIA CD0"); |
| if (err) |
| goto err01; |
| err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD0); |
| if (err) |
| goto err02; |
| irqs[0].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD0); |
| |
| err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); |
| if (err) |
| goto err02; |
| err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
| if (err) |
| goto err03; |
| err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON"); |
| if (err) |
| goto err03; |
| err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0); |
| if (err) |
| goto err04; |
| err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET"); |
| if (err) |
| goto err04; |
| err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0); |
| if (err) |
| goto err05; |
| err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET"); |
| if (err) |
| goto err05; |
| err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0); |
| if (err) |
| goto err06; |
| err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| if (err) |
| goto err06; |
| break; |
| case 1: |
| err = gpio_request(H3XXX_GPIO_PCMCIA_IRQ1, "PCMCIA IRQ1"); |
| if (err) |
| goto err10; |
| err = gpio_direction_input(H3XXX_GPIO_PCMCIA_IRQ1); |
| if (err) |
| goto err11; |
| skt->socket.pci_irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_IRQ1); |
| |
| err = gpio_request(H3XXX_GPIO_PCMCIA_CD1, "PCMCIA CD1"); |
| if (err) |
| goto err11; |
| err = gpio_direction_input(H3XXX_GPIO_PCMCIA_CD1); |
| if (err) |
| goto err12; |
| irqs[1].irq = gpio_to_irq(H3XXX_GPIO_PCMCIA_CD1); |
| |
| err = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| if (err) |
| goto err12; |
| break; |
| } |
| return 0; |
| |
| err06: gpio_free(H3XXX_EGPIO_CARD_RESET); |
| err05: gpio_free(H3XXX_EGPIO_OPT_RESET); |
| err04: gpio_free(H3XXX_EGPIO_OPT_ON); |
| err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
| err02: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
| err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
| err00: return err; |
| |
| err12: gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
| err11: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
| err10: return err; |
| } |
| |
| static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
| { |
| soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| |
| switch (skt->nr) { |
| case 0: |
| /* Disable CF bus: */ |
| gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
| gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
| gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
| |
| gpio_free(H3XXX_EGPIO_CARD_RESET); |
| gpio_free(H3XXX_EGPIO_OPT_RESET); |
| gpio_free(H3XXX_EGPIO_OPT_ON); |
| gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
| gpio_free(H3XXX_GPIO_PCMCIA_CD0); |
| gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
| break; |
| case 1: |
| gpio_free(H3XXX_GPIO_PCMCIA_CD1); |
| gpio_free(H3XXX_GPIO_PCMCIA_IRQ1); |
| break; |
| } |
| } |
| |
| static void |
| h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
| { |
| switch (skt->nr) { |
| case 0: |
| state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD0); |
| state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ0); |
| state->bvd1 = 0; |
| state->bvd2 = 0; |
| state->wrprot = 0; /* Not available on H3600. */ |
| state->vs_3v = 0; |
| state->vs_Xv = 0; |
| break; |
| |
| case 1: |
| state->detect = !gpio_get_value(H3XXX_GPIO_PCMCIA_CD1); |
| state->ready = !!gpio_get_value(H3XXX_GPIO_PCMCIA_IRQ1); |
| state->bvd1 = 0; |
| state->bvd2 = 0; |
| state->wrprot = 0; /* Not available on H3600. */ |
| state->vs_3v = 0; |
| state->vs_Xv = 0; |
| break; |
| } |
| } |
| |
| static int |
| h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) |
| { |
| if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { |
| printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", |
| state->Vcc / 10, state->Vcc % 10); |
| return -1; |
| } |
| |
| gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
| |
| /* Silently ignore Vpp, output enable, speaker enable. */ |
| |
| return 0; |
| } |
| |
| static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
| { |
| /* Enable CF bus: */ |
| gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1); |
| gpio_set_value(H3XXX_EGPIO_OPT_ON, 1); |
| gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0); |
| |
| msleep(10); |
| |
| soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| } |
| |
| static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
| { |
| soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); |
| |
| /* |
| * FIXME: This doesn't fit well. We don't have the mechanism in |
| * the generic PCMCIA layer to deal with the idea of two sockets |
| * on one bus. We rely on the cs.c behaviour shutting down |
| * socket 0 then socket 1. |
| */ |
| if (skt->nr == 1) { |
| gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
| gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
| /* hmm, does this suck power? */ |
| gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
| } |
| } |
| |
| struct pcmcia_low_level h3600_pcmcia_ops = { |
| .owner = THIS_MODULE, |
| .hw_init = h3600_pcmcia_hw_init, |
| .hw_shutdown = h3600_pcmcia_hw_shutdown, |
| .socket_state = h3600_pcmcia_socket_state, |
| .configure_socket = h3600_pcmcia_configure_socket, |
| |
| .socket_init = h3600_pcmcia_socket_init, |
| .socket_suspend = h3600_pcmcia_socket_suspend, |
| }; |
| |
| int __init pcmcia_h3600_init(struct device *dev) |
| { |
| int ret = -ENODEV; |
| |
| if (machine_is_h3600() || machine_is_h3100()) |
| ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); |
| |
| return ret; |
| } |