Blame view
drivers/pcmcia/sa1111_lubbock.c
5.01 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 |
/* * linux/drivers/pcmcia/pxa2xx_lubbock.c * * Author: George Davis * Created: Jan 10, 2002 * Copyright: MontaVista Software Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c * * Lubbock PCMCIA specific routines. * */ #include <linux/module.h> #include <linux/kernel.h> |
1da177e4c Linux-2.6.12-rc2 |
19 20 21 22 |
#include <linux/device.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/delay.h> |
a09e64fbc [ARM] Move includ... |
23 |
#include <mach/hardware.h> |
1da177e4c Linux-2.6.12-rc2 |
24 25 |
#include <asm/hardware/sa1111.h> #include <asm/mach-types.h> |
a09e64fbc [ARM] Move includ... |
26 |
#include <mach/lubbock.h> |
1da177e4c Linux-2.6.12-rc2 |
27 28 29 30 |
#include "sa1111_generic.h" static int |
1da177e4c Linux-2.6.12-rc2 |
31 32 33 |
lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { |
701a5dc05 PCMCIA: sa1111: w... |
34 |
struct sa1111_pcmcia_socket *s = to_skt(skt); |
1da177e4c Linux-2.6.12-rc2 |
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 |
unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set; int ret = 0; pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0; /* Lubbock uses the Maxim MAX1602, with the following connections: * * Socket 0 (PCMCIA): * MAX1602 Lubbock Register * Pin Signal * ----- ------- ---------------------- * A0VPP S0_PWR0 SA-1111 GPIO A<0> * A1VPP S0_PWR1 SA-1111 GPIO A<1> * A0VCC S0_PWR2 SA-1111 GPIO A<2> * A1VCC S0_PWR3 SA-1111 GPIO A<3> * VX VCC * VY +3.3V * 12IN +12V * CODE +3.3V Cirrus Code, CODE = High (VY) * * Socket 1 (CF): * MAX1602 Lubbock Register * Pin Signal * ----- ------- ---------------------- * A0VPP GND VPP is not connected * A1VPP GND VPP is not connected * A0VCC S1_PWR0 MISC_WR<14> * A1VCC S1_PWR1 MISC_WR<15> * VX VCC * VY +3.3V * 12IN GND VPP is not connected * CODE +3.3V Cirrus Code, CODE = High (VY) * */ again: switch (skt->nr) { case 0: pa_dwr_mask = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3; switch (state->Vcc) { case 0: /* Hi-Z */ break; case 33: /* VY */ pa_dwr_set |= GPIO_A3; break; case 50: /* VX */ pa_dwr_set |= GPIO_A2; break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u ", |
2e11cb4c5 pcmcia: replace r... |
90 |
__func__, state->Vcc); |
1da177e4c Linux-2.6.12-rc2 |
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 |
ret = -1; } switch (state->Vpp) { case 0: /* Hi-Z */ break; case 120: /* 12IN */ pa_dwr_set |= GPIO_A1; break; default: /* VCC */ if (state->Vpp == state->Vcc) pa_dwr_set |= GPIO_A0; else { printk(KERN_ERR "%s(): unrecognized Vpp %u ", |
2e11cb4c5 pcmcia: replace r... |
108 |
__func__, state->Vpp); |
1da177e4c Linux-2.6.12-rc2 |
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 |
ret = -1; break; } } break; case 1: misc_mask = (1 << 15) | (1 << 14); switch (state->Vcc) { case 0: /* Hi-Z */ break; case 33: /* VY */ misc_set |= 1 << 15; break; case 50: /* VX */ misc_set |= 1 << 14; break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u ", |
2e11cb4c5 pcmcia: replace r... |
133 |
__func__, state->Vcc); |
1da177e4c Linux-2.6.12-rc2 |
134 135 136 137 138 139 140 |
ret = -1; break; } if (state->Vpp != state->Vcc && state->Vpp != 0) { printk(KERN_ERR "%s(): CF slot cannot support Vpp %u ", |
2e11cb4c5 pcmcia: replace r... |
141 |
__func__, state->Vpp); |
1da177e4c Linux-2.6.12-rc2 |
142 143 144 145 146 147 148 149 150 151 152 153 154 155 |
ret = -1; break; } break; default: ret = -1; } if (ret == 0) ret = sa1111_pcmcia_configure_socket(skt, state); if (ret == 0) { lubbock_set_misc_wr(misc_mask, misc_set); |
701a5dc05 PCMCIA: sa1111: w... |
156 |
sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set); |
1da177e4c Linux-2.6.12-rc2 |
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 |
} #if 1 if (ret == 0 && state->Vcc == 33) { struct pcmcia_state new_state; /* * HACK ALERT: * We can't sense the voltage properly on Lubbock before * actually applying some power to the socket (catch 22). * Resense the socket Voltage Sense pins after applying * socket power. * * Note: It takes about 2.5ms for the MAX1602 VCC output * to rise. */ mdelay(3); sa1111_pcmcia_socket_state(skt, &new_state); if (!new_state.vs_3v && !new_state.vs_Xv) { /* * Switch to 5V, Configure socket with 5V voltage */ lubbock_set_misc_wr(misc_mask, 0); |
701a5dc05 PCMCIA: sa1111: w... |
182 |
sa1111_set_io(s->dev, pa_dwr_mask, 0); |
1da177e4c Linux-2.6.12-rc2 |
183 184 185 186 187 188 189 190 191 192 |
/* * It takes about 100ms to turn off Vcc. */ mdelay(100); /* * We need to hack around the const qualifier as * well to keep this ugly workaround localized and * not force it to the rest of the code. Barf bags |
25985edce Fix common misspe... |
193 |
* available in the seat pocket in front of you! |
1da177e4c Linux-2.6.12-rc2 |
194 195 196 197 198 199 200 201 202 203 204 205 206 |
*/ ((socket_state_t *)state)->Vcc = 50; ((socket_state_t *)state)->Vpp = 50; goto again; } } #endif return ret; } static struct pcmcia_low_level lubbock_pcmcia_ops = { .owner = THIS_MODULE, |
1da177e4c Linux-2.6.12-rc2 |
207 |
.configure_socket = lubbock_pcmcia_configure_socket, |
1da177e4c Linux-2.6.12-rc2 |
208 209 210 211 212 |
.first = 0, .nr = 2, }; #include "pxa2xx_base.h" |
7bbaac12a pcmcia: remove px... |
213 |
int pcmcia_lubbock_init(struct sa1111_dev *sadev) |
1da177e4c Linux-2.6.12-rc2 |
214 |
{ |
3f8df892b pcmcia: sa1111: f... |
215 216 217 218 219 220 221 |
/* * Set GPIO_A<3:0> to be outputs for the MAX1600, * and switch to standby mode. */ sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0); sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0); sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0); |
1da177e4c Linux-2.6.12-rc2 |
222 |
|
3f8df892b pcmcia: sa1111: f... |
223 224 |
/* Set CF Socket 1 power to standby mode. */ lubbock_set_misc_wr((1 << 15) | (1 << 14), 0); |
1da177e4c Linux-2.6.12-rc2 |
225 |
|
3f8df892b pcmcia: sa1111: f... |
226 |
pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops); |
817ed5748 pcmcia: lubbock: ... |
227 |
pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops); |
3f8df892b pcmcia: sa1111: f... |
228 229 |
return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops, pxa2xx_drv_pcmcia_add_one); |
1da177e4c Linux-2.6.12-rc2 |
230 231 232 |
} MODULE_LICENSE("GPL"); |