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 <asm/hardware.h>
25 #include <asm/hardware/sa1111.h>
26 #include <asm/mach-types.h>
27 #include <asm/arch/pxa-regs.h>
28 #include <asm/arch/lubbock.h>
30 #include "sa1111_generic.h"
33 lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
36 * Setup default state of GPIO outputs
37 * before we enable them as outputs.
40 GPIO_bit(GPIO48_nPOE) |
41 GPIO_bit(GPIO49_nPWE) |
42 GPIO_bit(GPIO50_nPIOR) |
43 GPIO_bit(GPIO51_nPIOW) |
44 GPIO_bit(GPIO52_nPCE_1) |
45 GPIO_bit(GPIO53_nPCE_2);
47 pxa_gpio_mode(GPIO48_nPOE_MD);
48 pxa_gpio_mode(GPIO49_nPWE_MD);
49 pxa_gpio_mode(GPIO50_nPIOR_MD);
50 pxa_gpio_mode(GPIO51_nPIOW_MD);
51 pxa_gpio_mode(GPIO52_nPCE_1_MD);
52 pxa_gpio_mode(GPIO53_nPCE_2_MD);
53 pxa_gpio_mode(GPIO54_pSKTSEL_MD);
54 pxa_gpio_mode(GPIO55_nPREG_MD);
55 pxa_gpio_mode(GPIO56_nPWAIT_MD);
56 pxa_gpio_mode(GPIO57_nIOIS16_MD);
58 return sa1111_pcmcia_hw_init(skt);
62 lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
63 const socket_state_t *state)
65 unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set;
68 pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0;
70 /* Lubbock uses the Maxim MAX1602, with the following connections:
73 * MAX1602 Lubbock Register
75 * ----- ------- ----------------------
76 * A0VPP S0_PWR0 SA-1111 GPIO A<0>
77 * A1VPP S0_PWR1 SA-1111 GPIO A<1>
78 * A0VCC S0_PWR2 SA-1111 GPIO A<2>
79 * A1VCC S0_PWR3 SA-1111 GPIO A<3>
83 * CODE +3.3V Cirrus Code, CODE = High (VY)
86 * MAX1602 Lubbock Register
88 * ----- ------- ----------------------
89 * A0VPP GND VPP is not connected
90 * A1VPP GND VPP is not connected
91 * A0VCC S1_PWR0 MISC_WR<14>
92 * A1VCC S1_PWR1 MISC_WR<15>
95 * 12IN GND VPP is not connected
96 * CODE +3.3V Cirrus Code, CODE = High (VY)
103 pa_dwr_mask = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
105 switch (state->Vcc) {
110 pa_dwr_set |= GPIO_A3;
114 pa_dwr_set |= GPIO_A2;
118 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
119 __FUNCTION__, state->Vcc);
123 switch (state->Vpp) {
128 pa_dwr_set |= GPIO_A1;
132 if (state->Vpp == state->Vcc)
133 pa_dwr_set |= GPIO_A0;
135 printk(KERN_ERR "%s(): unrecognized Vpp %u\n",
136 __FUNCTION__, state->Vpp);
144 misc_mask = (1 << 15) | (1 << 14);
146 switch (state->Vcc) {
159 printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
160 __FUNCTION__, state->Vcc);
165 if (state->Vpp != state->Vcc && state->Vpp != 0) {
166 printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n",
167 __FUNCTION__, state->Vpp);
178 ret = sa1111_pcmcia_configure_socket(skt, state);
181 lubbock_set_misc_wr(misc_mask, misc_set);
182 sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
186 if (ret == 0 && state->Vcc == 33) {
187 struct pcmcia_state new_state;
191 * We can't sense the voltage properly on Lubbock before
192 * actually applying some power to the socket (catch 22).
193 * Resense the socket Voltage Sense pins after applying
196 * Note: It takes about 2.5ms for the MAX1602 VCC output
201 sa1111_pcmcia_socket_state(skt, &new_state);
203 if (!new_state.vs_3v && !new_state.vs_Xv) {
205 * Switch to 5V, Configure socket with 5V voltage
207 lubbock_set_misc_wr(misc_mask, 0);
208 sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, 0);
211 * It takes about 100ms to turn off Vcc.
216 * We need to hack around the const qualifier as
217 * well to keep this ugly workaround localized and
218 * not force it to the rest of the code. Barf bags
219 * avaliable in the seat pocket in front of you!
221 ((socket_state_t *)state)->Vcc = 50;
222 ((socket_state_t *)state)->Vpp = 50;
231 static struct pcmcia_low_level lubbock_pcmcia_ops = {
232 .owner = THIS_MODULE,
233 .hw_init = lubbock_pcmcia_hw_init,
234 .hw_shutdown = sa1111_pcmcia_hw_shutdown,
235 .socket_state = sa1111_pcmcia_socket_state,
236 .configure_socket = lubbock_pcmcia_configure_socket,
237 .socket_init = sa1111_pcmcia_socket_init,
238 .socket_suspend = sa1111_pcmcia_socket_suspend,
243 #include "pxa2xx_base.h"
245 int __init pcmcia_lubbock_init(struct sa1111_dev *sadev)
249 if (machine_is_lubbock()) {
251 * Set GPIO_A<3:0> to be outputs for the MAX1600,
252 * and switch to standby mode.
254 sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
255 sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
256 sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
258 /* Set CF Socket 1 power to standby mode. */
259 lubbock_set_misc_wr((1 << 15) | (1 << 14), 0);
261 sadev->dev.platform_data = &lubbock_pcmcia_ops;
262 ret = __pxa2xx_drv_pcmcia_probe(&sadev->dev);
268 MODULE_LICENSE("GPL");