// SPDX-License-Identifier: GPL-2.0 /* * 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 int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { int err; skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect"; skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready"; err = soc_pcmcia_request_gpiods(skt); if (err) return err; switch (skt->nr) { case 0: err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); if (err) goto err01; 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; break; case 1: 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); err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); return err; } static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { 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); break; case 1: break; } } static void h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { state->bvd1 = 0; state->bvd2 = 0; state->vs_3v = 0; state->vs_Xv = 0; } 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); } static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { /* * 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 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; }