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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | // SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/pcmcia/pxa2xx_trizeps4.c * * TRIZEPS PCMCIA specific routines. * * Author: Jürgen Schindele * Created: 20 02, 2006 * Copyright: Jürgen Schindele */ #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <asm/mach-types.h> #include <asm/irq.h> #include "pxa2xx-regs.h" #include "trizeps4.h" #include <pcmcia/soc_common.h> extern void board_pcmcia_power(int power); static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { /* we dont have voltage/card/ready detection * so we dont need interrupts for it */ switch (skt->nr) { case 0: skt->stat[SOC_STAT_CD].gpio = GPIO_PCD; skt->stat[SOC_STAT_CD].name = "cs0_cd"; skt->stat[SOC_STAT_RDY].gpio = GPIO_PRDY; skt->stat[SOC_STAT_RDY].name = "cs0_rdy"; break; default: break; } /* release the reset of this card */ pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq); return 0; } static unsigned long trizeps_pcmcia_status[2]; static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned short status = 0, change; status = CFSR_readw(); change = (status ^ trizeps_pcmcia_status[skt->nr]) & ConXS_CFSR_BVD_MASK; if (change) { trizeps_pcmcia_status[skt->nr] = status; if (status & ConXS_CFSR_BVD1) { /* enable_irq empty */ } else { /* disable_irq empty */ } } switch (skt->nr) { case 0: /* just fill in fix states */ state->bvd1 = (status & ConXS_CFSR_BVD1) ? 1 : 0; state->bvd2 = (status & ConXS_CFSR_BVD2) ? 1 : 0; state->vs_3v = (status & ConXS_CFSR_VS1) ? 0 : 1; state->vs_Xv = (status & ConXS_CFSR_VS2) ? 0 : 1; break; #ifndef CONFIG_MACH_TRIZEPS_CONXS /* on ConXS we only have one slot. Second is inactive */ case 1: state->detect = 0; state->ready = 0; state->bvd1 = 0; state->bvd2 = 0; state->vs_3v = 0; state->vs_Xv = 0; break; #endif } } static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { int ret = 0; unsigned short power = 0; /* we do nothing here just check a bit */ switch (state->Vcc) { case 0: power &= 0xfc; break; case 33: power |= ConXS_BCR_S0_VCC_3V3; break; case 50: pr_err("%s(): Vcc 5V not supported in socket\n", __func__); break; default: pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc); ret = -1; } switch (state->Vpp) { case 0: power &= 0xf3; break; case 33: power |= ConXS_BCR_S0_VPP_3V3; break; case 120: pr_err("%s(): Vpp 12V not supported in socket\n", __func__); break; default: if (state->Vpp != state->Vcc) { pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp); ret = -1; } } switch (skt->nr) { case 0: /* we only have 3.3V */ board_pcmcia_power(power); break; #ifndef CONFIG_MACH_TRIZEPS_CONXS /* on ConXS we only have one slot. Second is inactive */ case 1: #endif default: break; } return ret; } static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { /* default is on */ board_pcmcia_power(0x9); } static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { board_pcmcia_power(0x0); } static struct pcmcia_low_level trizeps_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = trizeps_pcmcia_hw_init, .socket_state = trizeps_pcmcia_socket_state, .configure_socket = trizeps_pcmcia_configure_socket, .socket_init = trizeps_pcmcia_socket_init, .socket_suspend = trizeps_pcmcia_socket_suspend, #ifdef CONFIG_MACH_TRIZEPS_CONXS .nr = 1, #else .nr = 2, #endif .first = 0, }; static struct platform_device *trizeps_pcmcia_device; static int __init trizeps_pcmcia_init(void) { int ret; if (!machine_is_trizeps4() && !machine_is_trizeps4wl()) return -ENODEV; trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!trizeps_pcmcia_device) return -ENOMEM; ret = platform_device_add_data(trizeps_pcmcia_device, &trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops)); if (ret == 0) ret = platform_device_add(trizeps_pcmcia_device); if (ret) platform_device_put(trizeps_pcmcia_device); return ret; } static void __exit trizeps_pcmcia_exit(void) { platform_device_unregister(trizeps_pcmcia_device); } fs_initcall(trizeps_pcmcia_init); module_exit(trizeps_pcmcia_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Juergen Schindele"); MODULE_ALIAS("platform:pxa2xx-pcmcia"); |