1 // SPDX-License-Identifier: GPL-2.0
3 * drivers/pcmcia/sa1100_h3600.c
5 * PCMCIA implementation routines for H3600
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/device.h>
11 #include <linux/interrupt.h>
12 #include <linux/init.h>
13 #include <linux/delay.h>
14 #include <linux/gpio.h>
16 #include <mach/hardware.h>
18 #include <asm/mach-types.h>
19 #include <mach/h3xxx.h>
21 #include "sa1100_generic.h"
23 static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
29 skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0;
30 skt->stat[SOC_STAT_CD].name = "PCMCIA CD0";
31 skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0;
32 skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0";
34 err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");
37 err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
40 err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");
43 err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);
46 err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");
49 err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);
52 err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");
55 err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);
60 skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1;
61 skt->stat[SOC_STAT_CD].name = "PCMCIA CD1";
62 skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1;
63 skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1";
68 err06: gpio_free(H3XXX_EGPIO_CARD_RESET);
69 err05: gpio_free(H3XXX_EGPIO_OPT_RESET);
70 err04: gpio_free(H3XXX_EGPIO_OPT_ON);
71 err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
72 err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);
76 static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
81 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
82 gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
83 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
85 gpio_free(H3XXX_EGPIO_CARD_RESET);
86 gpio_free(H3XXX_EGPIO_OPT_RESET);
87 gpio_free(H3XXX_EGPIO_OPT_ON);
88 gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);
96 h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
105 h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
107 if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {
108 printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",
109 state->Vcc / 10, state->Vcc % 10);
113 gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));
115 /* Silently ignore Vpp, output enable, speaker enable. */
120 static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
123 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);
124 gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);
125 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);
130 static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
133 * FIXME: This doesn't fit well. We don't have the mechanism in
134 * the generic PCMCIA layer to deal with the idea of two sockets
135 * on one bus. We rely on the cs.c behaviour shutting down
136 * socket 0 then socket 1.
139 gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);
140 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);
141 /* hmm, does this suck power? */
142 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);
146 struct pcmcia_low_level h3600_pcmcia_ops = {
147 .owner = THIS_MODULE,
148 .hw_init = h3600_pcmcia_hw_init,
149 .hw_shutdown = h3600_pcmcia_hw_shutdown,
150 .socket_state = h3600_pcmcia_socket_state,
151 .configure_socket = h3600_pcmcia_configure_socket,
153 .socket_init = h3600_pcmcia_socket_init,
154 .socket_suspend = h3600_pcmcia_socket_suspend,
157 int pcmcia_h3600_init(struct device *dev)
161 if (machine_is_h3600() || machine_is_h3100())
162 ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);