^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Viper/Zeus PCMCIA support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2004 Arcom Control Systems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Maintained by Marc Zyngier <maz@misterjones.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Based on:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * iPAQ h2200 PCMCIA support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright 2004 Koen Kooi <koen@vestingbar.nl>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * License. See the file COPYING in the main directory of this archive for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <pcmcia/ss.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/platform_data/pcmcia-pxa2xx_viper.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "soc_common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "pxa2xx_base.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static struct platform_device *arcom_pcmcia_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline struct arcom_pcmcia_pdata *viper_get_pdata(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return arcom_pcmcia_dev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) skt->stat[SOC_STAT_CD].gpio = pdata->cd_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) skt->stat[SOC_STAT_CD].name = "PCMCIA_CD";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) skt->stat[SOC_STAT_RDY].gpio = pdata->rdy_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) skt->stat[SOC_STAT_RDY].name = "CF ready";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (gpio_request(pdata->pwr_gpio, "CF power"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) goto err_request_pwr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (gpio_direction_output(pdata->pwr_gpio, 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) goto err_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) err_dir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) gpio_free(pdata->pwr_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) err_request_pwr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * Release all resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) gpio_free(pdata->pwr_gpio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct pcmcia_state *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) state->vs_3v = 1; /* Can only apply 3.3V */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) state->vs_Xv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) const socket_state_t *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /* Silently ignore Vpp, output enable, speaker enable. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) pdata->reset(state->flags & SS_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* Apply socket voltage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) switch (state->Vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) gpio_set_value(pdata->pwr_gpio, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) case 33:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) gpio_set_value(pdata->pwr_gpio, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static struct pcmcia_low_level viper_pcmcia_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .hw_init = viper_pcmcia_hw_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .hw_shutdown = viper_pcmcia_hw_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .socket_state = viper_pcmcia_socket_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .configure_socket = viper_pcmcia_configure_socket,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .nr = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static struct platform_device *viper_pcmcia_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static int viper_pcmcia_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* I can't imagine more than one device, but you never know... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (arcom_pcmcia_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (!pdev->dev.platform_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!viper_pcmcia_device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) arcom_pcmcia_dev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) viper_pcmcia_device->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ret = platform_device_add_data(viper_pcmcia_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) &viper_pcmcia_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) sizeof(viper_pcmcia_ops));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ret = platform_device_add(viper_pcmcia_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) platform_device_put(viper_pcmcia_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) arcom_pcmcia_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static int viper_pcmcia_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) platform_device_unregister(viper_pcmcia_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) arcom_pcmcia_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static struct platform_device_id viper_pcmcia_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) { .name = "viper-pcmcia", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) { .name = "zeus-pcmcia", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static struct platform_driver viper_pcmcia_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .probe = viper_pcmcia_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .remove = viper_pcmcia_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) .name = "arcom-pcmcia",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .id_table = viper_pcmcia_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) module_platform_driver(viper_pcmcia_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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