^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/drivers/pcmcia/pxa2xx_palmtc.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Driver for Palm Tungsten|C PCMCIA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2008 Alex Osborne <ato@meshy.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2009-2011 Marek Vasut <marek.vasut@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/mach-types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <mach/palmtc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "soc_common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static struct gpio palmtc_pcmcia_gpios[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) { GPIO_NR_PALMTC_PCMCIA_POWER1, GPIOF_INIT_LOW, "PCMCIA Power 1" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) { GPIO_NR_PALMTC_PCMCIA_POWER2, GPIOF_INIT_LOW, "PCMCIA Power 2" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) { GPIO_NR_PALMTC_PCMCIA_POWER3, GPIOF_INIT_LOW, "PCMCIA Power 3" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) { GPIO_NR_PALMTC_PCMCIA_RESET, GPIOF_INIT_HIGH,"PCMCIA Reset" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) { GPIO_NR_PALMTC_PCMCIA_PWRREADY, GPIOF_IN, "PCMCIA Power Ready" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static int palmtc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ret = gpio_request_array(palmtc_pcmcia_gpios,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ARRAY_SIZE(palmtc_pcmcia_gpios));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMTC_PCMCIA_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static void palmtc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) gpio_free_array(palmtc_pcmcia_gpios, ARRAY_SIZE(palmtc_pcmcia_gpios));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static void palmtc_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct pcmcia_state *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) state->detect = 1; /* always inserted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) state->vs_3v = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) state->vs_Xv = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static int palmtc_wifi_powerdown(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_RESET, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER2, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) mdelay(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int palmtc_wifi_powerup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int timeout = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER3, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) mdelay(50);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* Power up the card, 1.8V first, after a while 3.3V */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) mdelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER2, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /* Wait till the card is ready */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) while (!gpio_get_value(GPIO_NR_PALMTC_PCMCIA_PWRREADY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) timeout) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) mdelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) timeout--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Power down the WiFi in case of error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (!timeout) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) palmtc_wifi_powerdown();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return 1;
^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) /* Reset the card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_RESET, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) mdelay(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_RESET, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) mdelay(25);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) gpio_set_value(GPIO_NR_PALMTC_PCMCIA_POWER3, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static int palmtc_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) const socket_state_t *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (state->Vcc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ret = palmtc_wifi_powerdown();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) else if (state->Vcc == 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ret = palmtc_wifi_powerup();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return ret;
^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 palmtc_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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .first = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .nr = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .hw_init = palmtc_pcmcia_hw_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .hw_shutdown = palmtc_pcmcia_hw_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .socket_state = palmtc_pcmcia_socket_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .configure_socket = palmtc_pcmcia_configure_socket,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static struct platform_device *palmtc_pcmcia_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static int __init palmtc_pcmcia_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (!machine_is_palmtc())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) palmtc_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (!palmtc_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) ret = platform_device_add_data(palmtc_pcmcia_device, &palmtc_pcmcia_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) sizeof(palmtc_pcmcia_ops));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ret = platform_device_add(palmtc_pcmcia_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) platform_device_put(palmtc_pcmcia_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static void __exit palmtc_pcmcia_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) platform_device_unregister(palmtc_pcmcia_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) module_init(palmtc_pcmcia_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) module_exit(palmtc_pcmcia_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) " Marek Vasut <marek.vasut@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) MODULE_DESCRIPTION("PCMCIA support for Palm Tungsten|C");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) MODULE_ALIAS("platform:pxa2xx-pcmcia");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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