Root/
| 1 | /* |
| 2 | * linux/drivers/pcmcia/pxa2xx_trizeps4.c |
| 3 | * |
| 4 | * TRIZEPS PCMCIA specific routines. |
| 5 | * |
| 6 | * Author: Jürgen Schindele |
| 7 | * Created: 20 02, 2006 |
| 8 | * Copyright: Jürgen Schindele |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/gpio.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | |
| 22 | #include <asm/mach-types.h> |
| 23 | #include <asm/irq.h> |
| 24 | |
| 25 | #include <mach/pxa2xx-regs.h> |
| 26 | #include <mach/trizeps4.h> |
| 27 | |
| 28 | #include "soc_common.h" |
| 29 | |
| 30 | extern void board_pcmcia_power(int power); |
| 31 | |
| 32 | static int trizeps_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| 33 | { |
| 34 | /* we dont have voltage/card/ready detection |
| 35 | * so we dont need interrupts for it |
| 36 | */ |
| 37 | switch (skt->nr) { |
| 38 | case 0: |
| 39 | skt->stat[SOC_STAT_CD].gpio = GPIO_PCD; |
| 40 | skt->stat[SOC_STAT_CD].name = "cs0_cd"; |
| 41 | skt->stat[SOC_STAT_RDY].gpio = GPIO_PRDY; |
| 42 | skt->stat[SOC_STAT_RDY].name = "cs0_rdy"; |
| 43 | break; |
| 44 | default: |
| 45 | break; |
| 46 | } |
| 47 | /* release the reset of this card */ |
| 48 | pr_debug("%s: sock %d irq %d\n", __func__, skt->nr, skt->socket.pci_irq); |
| 49 | |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | static unsigned long trizeps_pcmcia_status[2]; |
| 54 | |
| 55 | static void trizeps_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
| 56 | struct pcmcia_state *state) |
| 57 | { |
| 58 | unsigned short status = 0, change; |
| 59 | status = CFSR_readw(); |
| 60 | change = (status ^ trizeps_pcmcia_status[skt->nr]) & |
| 61 | ConXS_CFSR_BVD_MASK; |
| 62 | if (change) { |
| 63 | trizeps_pcmcia_status[skt->nr] = status; |
| 64 | if (status & ConXS_CFSR_BVD1) { |
| 65 | /* enable_irq empty */ |
| 66 | } else { |
| 67 | /* disable_irq empty */ |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | switch (skt->nr) { |
| 72 | case 0: |
| 73 | /* just fill in fix states */ |
| 74 | state->bvd1 = (status & ConXS_CFSR_BVD1) ? 1 : 0; |
| 75 | state->bvd2 = (status & ConXS_CFSR_BVD2) ? 1 : 0; |
| 76 | state->vs_3v = (status & ConXS_CFSR_VS1) ? 0 : 1; |
| 77 | state->vs_Xv = (status & ConXS_CFSR_VS2) ? 0 : 1; |
| 78 | break; |
| 79 | |
| 80 | #ifndef CONFIG_MACH_TRIZEPS_CONXS |
| 81 | /* on ConXS we only have one slot. Second is inactive */ |
| 82 | case 1: |
| 83 | state->detect = 0; |
| 84 | state->ready = 0; |
| 85 | state->bvd1 = 0; |
| 86 | state->bvd2 = 0; |
| 87 | state->vs_3v = 0; |
| 88 | state->vs_Xv = 0; |
| 89 | break; |
| 90 | |
| 91 | #endif |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | static int trizeps_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| 96 | const socket_state_t *state) |
| 97 | { |
| 98 | int ret = 0; |
| 99 | unsigned short power = 0; |
| 100 | |
| 101 | /* we do nothing here just check a bit */ |
| 102 | switch (state->Vcc) { |
| 103 | case 0: power &= 0xfc; break; |
| 104 | case 33: power |= ConXS_BCR_S0_VCC_3V3; break; |
| 105 | case 50: |
| 106 | pr_err("%s(): Vcc 5V not supported in socket\n", __func__); |
| 107 | break; |
| 108 | default: |
| 109 | pr_err("%s(): bad Vcc %u\n", __func__, state->Vcc); |
| 110 | ret = -1; |
| 111 | } |
| 112 | |
| 113 | switch (state->Vpp) { |
| 114 | case 0: power &= 0xf3; break; |
| 115 | case 33: power |= ConXS_BCR_S0_VPP_3V3; break; |
| 116 | case 120: |
| 117 | pr_err("%s(): Vpp 12V not supported in socket\n", __func__); |
| 118 | break; |
| 119 | default: |
| 120 | if (state->Vpp != state->Vcc) { |
| 121 | pr_err("%s(): bad Vpp %u\n", __func__, state->Vpp); |
| 122 | ret = -1; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | switch (skt->nr) { |
| 127 | case 0: /* we only have 3.3V */ |
| 128 | board_pcmcia_power(power); |
| 129 | break; |
| 130 | |
| 131 | #ifndef CONFIG_MACH_TRIZEPS_CONXS |
| 132 | /* on ConXS we only have one slot. Second is inactive */ |
| 133 | case 1: |
| 134 | #endif |
| 135 | default: |
| 136 | break; |
| 137 | } |
| 138 | |
| 139 | return ret; |
| 140 | } |
| 141 | |
| 142 | static void trizeps_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
| 143 | { |
| 144 | /* default is on */ |
| 145 | board_pcmcia_power(0x9); |
| 146 | } |
| 147 | |
| 148 | static void trizeps_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
| 149 | { |
| 150 | board_pcmcia_power(0x0); |
| 151 | } |
| 152 | |
| 153 | static struct pcmcia_low_level trizeps_pcmcia_ops = { |
| 154 | .owner = THIS_MODULE, |
| 155 | .hw_init = trizeps_pcmcia_hw_init, |
| 156 | .socket_state = trizeps_pcmcia_socket_state, |
| 157 | .configure_socket = trizeps_pcmcia_configure_socket, |
| 158 | .socket_init = trizeps_pcmcia_socket_init, |
| 159 | .socket_suspend = trizeps_pcmcia_socket_suspend, |
| 160 | #ifdef CONFIG_MACH_TRIZEPS_CONXS |
| 161 | .nr = 1, |
| 162 | #else |
| 163 | .nr = 2, |
| 164 | #endif |
| 165 | .first = 0, |
| 166 | }; |
| 167 | |
| 168 | static struct platform_device *trizeps_pcmcia_device; |
| 169 | |
| 170 | static int __init trizeps_pcmcia_init(void) |
| 171 | { |
| 172 | int ret; |
| 173 | |
| 174 | if (!machine_is_trizeps4() && !machine_is_trizeps4wl()) |
| 175 | return -ENODEV; |
| 176 | |
| 177 | trizeps_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); |
| 178 | if (!trizeps_pcmcia_device) |
| 179 | return -ENOMEM; |
| 180 | |
| 181 | ret = platform_device_add_data(trizeps_pcmcia_device, |
| 182 | &trizeps_pcmcia_ops, sizeof(trizeps_pcmcia_ops)); |
| 183 | |
| 184 | if (ret == 0) |
| 185 | ret = platform_device_add(trizeps_pcmcia_device); |
| 186 | |
| 187 | if (ret) |
| 188 | platform_device_put(trizeps_pcmcia_device); |
| 189 | |
| 190 | return ret; |
| 191 | } |
| 192 | |
| 193 | static void __exit trizeps_pcmcia_exit(void) |
| 194 | { |
| 195 | platform_device_unregister(trizeps_pcmcia_device); |
| 196 | } |
| 197 | |
| 198 | fs_initcall(trizeps_pcmcia_init); |
| 199 | module_exit(trizeps_pcmcia_exit); |
| 200 | |
| 201 | MODULE_LICENSE("GPL"); |
| 202 | MODULE_AUTHOR("Juergen Schindele"); |
| 203 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |
| 204 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
