2 * linux/drivers/pcmcia/pxa2xx_lubbock.c
5 * Created: Jan 10, 2002
6 * Copyright: MontaVista Software Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c
14 * Lubbock PCMCIA specific routines.
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/device.h>
20 #include <linux/errno.h>
21 #include <linux/init.h>
22 #include <linux/delay.h>
24 #include <mach/hardware.h>
25 #include <asm/hardware/sa1111.h>
26 #include <asm/mach-types.h>
27 #include <mach/lubbock.h>
29 #include "sa1111_generic.h"
32 lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
33 const socket_state_t *state)
35 struct sa1111_pcmcia_socket *s = to_skt(skt);
36 unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set;
39 pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0;
41 /* Lubbock uses the Maxim MAX1602, with the following connections:
44 * MAX1602 Lubbock Register
46 * ----- ------- ----------------------
47 * A0VPP S0_PWR0 SA-1111 GPIO A<0>
48 * A1VPP S0_PWR1 SA-1111 GPIO A<1>
49 * A0VCC S0_PWR2 SA-1111 GPIO A<2>
50 * A1VCC S0_PWR3 SA-1111 GPIO A<3>
54 * CODE +3.3V Cirrus Code, CODE = High (VY)
57 * MAX1602 Lubbock Register
59 * ----- ------- ----------------------
60 * A0VPP GND VPP is not connected
61 * A1VPP GND VPP is not connected
62 * A0VCC S1_PWR0 MISC_WR<14>
63 * A1VCC S1_PWR1 MISC_WR<15>
66 * 12IN GND VPP is not connected
67 * CODE +3.3V Cirrus Code, CODE = High (VY)
74 pa_dwr_mask = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
81 pa_dwr_set |= GPIO_A3;
85 pa_dwr_set |= GPIO_A2;
89 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
90 __func__, state->Vcc);
99 pa_dwr_set |= GPIO_A1;
103 if (state->Vpp == state->Vcc)
104 pa_dwr_set |= GPIO_A0;
106 printk(KERN_ERR "%s(): unrecognized Vpp %u\n",
107 __func__, state->Vpp);
115 misc_mask = (1 << 15) | (1 << 14);
117 switch (state->Vcc) {
130 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
131 __func__, state->Vcc);
136 if (state->Vpp != state->Vcc && state->Vpp != 0) {
137 printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n",
138 __func__, state->Vpp);
149 ret = sa1111_pcmcia_configure_socket(skt, state);
152 lubbock_set_misc_wr(misc_mask, misc_set);
153 sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
157 if (ret == 0 && state->Vcc == 33) {
158 struct pcmcia_state new_state;
162 * We can't sense the voltage properly on Lubbock before
163 * actually applying some power to the socket (catch 22).
164 * Resense the socket Voltage Sense pins after applying
167 * Note: It takes about 2.5ms for the MAX1602 VCC output
172 sa1111_pcmcia_socket_state(skt, &new_state);
174 if (!new_state.vs_3v && !new_state.vs_Xv) {
176 * Switch to 5V, Configure socket with 5V voltage
178 lubbock_set_misc_wr(misc_mask, 0);
179 sa1111_set_io(s->dev, pa_dwr_mask, 0);
182 * It takes about 100ms to turn off Vcc.
187 * We need to hack around the const qualifier as
188 * well to keep this ugly workaround localized and
189 * not force it to the rest of the code. Barf bags
190 * available in the seat pocket in front of you!
192 ((socket_state_t *)state)->Vcc = 50;
193 ((socket_state_t *)state)->Vpp = 50;
202 static struct pcmcia_low_level lubbock_pcmcia_ops = {
203 .owner = THIS_MODULE,
204 .configure_socket = lubbock_pcmcia_configure_socket,
209 #include "pxa2xx_base.h"
211 int pcmcia_lubbock_init(struct sa1111_dev *sadev)
214 * Set GPIO_A<3:0> to be outputs for the MAX1600,
215 * and switch to standby mode.
217 sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
218 sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
219 sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
221 /* Set CF Socket 1 power to standby mode. */
222 lubbock_set_misc_wr((1 << 15) | (1 << 14), 0);
224 pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops);
225 pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops);
226 return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops,
227 pxa2xx_drv_pcmcia_add_one);
230 MODULE_LICENSE("GPL");