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1// SPDX-License-Identifier: GPL-2.02/*3 * drivers/pcmcia/sa1100_h3600.c4 *5 * PCMCIA implementation routines for H36006 *7 */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>15 16#include <mach/hardware.h>17#include <asm/irq.h>18#include <asm/mach-types.h>19#include <mach/h3xxx.h>20 21#include "sa1100_generic.h"22 23static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt)24{25 int err;26 27 skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect";28 skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready";29 30 err = soc_pcmcia_request_gpiods(skt);31 if (err)32 return err;33 34 switch (skt->nr) {35 case 0:36 err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON");37 if (err)38 goto err01;39 err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0);40 if (err)41 goto err03;42 err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON");43 if (err)44 goto err03;45 err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0);46 if (err)47 goto err04;48 err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET");49 if (err)50 goto err04;51 err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0);52 if (err)53 goto err05;54 err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET");55 if (err)56 goto err05;57 err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0);58 if (err)59 goto err06;60 break;61 case 1:62 break;63 }64 return 0;65 66err06: gpio_free(H3XXX_EGPIO_CARD_RESET);67err05: gpio_free(H3XXX_EGPIO_OPT_RESET);68err04: gpio_free(H3XXX_EGPIO_OPT_ON);69err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);70err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0);71 return err;72}73 74static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)75{76 switch (skt->nr) {77 case 0:78 /* Disable CF bus: */79 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);80 gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);81 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);82 83 gpio_free(H3XXX_EGPIO_CARD_RESET);84 gpio_free(H3XXX_EGPIO_OPT_RESET);85 gpio_free(H3XXX_EGPIO_OPT_ON);86 gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON);87 break;88 case 1:89 break;90 }91}92 93static void94h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)95{96 state->bvd1 = 0;97 state->bvd2 = 0;98 state->vs_3v = 0;99 state->vs_Xv = 0;100}101 102static int103h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)104{105 if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) {106 printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n",107 state->Vcc / 10, state->Vcc % 10);108 return -1;109 }110 111 gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET));112 113 /* Silently ignore Vpp, output enable, speaker enable. */114 115 return 0;116}117 118static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt)119{120 /* Enable CF bus: */121 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1);122 gpio_set_value(H3XXX_EGPIO_OPT_ON, 1);123 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0);124 125 msleep(10);126}127 128static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)129{130 /*131 * FIXME: This doesn't fit well. We don't have the mechanism in132 * the generic PCMCIA layer to deal with the idea of two sockets133 * on one bus. We rely on the cs.c behaviour shutting down134 * socket 0 then socket 1.135 */136 if (skt->nr == 1) {137 gpio_set_value(H3XXX_EGPIO_OPT_ON, 0);138 gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0);139 /* hmm, does this suck power? */140 gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1);141 }142}143 144struct pcmcia_low_level h3600_pcmcia_ops = { 145 .owner = THIS_MODULE,146 .hw_init = h3600_pcmcia_hw_init,147 .hw_shutdown = h3600_pcmcia_hw_shutdown,148 .socket_state = h3600_pcmcia_socket_state,149 .configure_socket = h3600_pcmcia_configure_socket,150 151 .socket_init = h3600_pcmcia_socket_init,152 .socket_suspend = h3600_pcmcia_socket_suspend,153};154 155int pcmcia_h3600_init(struct device *dev)156{157 int ret = -ENODEV;158 159 if (machine_is_h3600())160 ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2);161 162 return ret;163}164