| /* |
| * 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> |
| #include <linux/device.h> |
| #include <linux/errno.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| |
| #include <mach/hardware.h> |
| #include <asm/hardware/sa1111.h> |
| #include <asm/mach-types.h> |
| #include <mach/lubbock.h> |
| |
| #include "sa1111_generic.h" |
| |
| static int |
| lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
| const socket_state_t *state) |
| { |
| struct sa1111_pcmcia_socket *s = to_skt(skt); |
| 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\n", |
| __func__, state->Vcc); |
| 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\n", |
| __func__, state->Vpp); |
| 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\n", |
| __func__, state->Vcc); |
| ret = -1; |
| break; |
| } |
| |
| if (state->Vpp != state->Vcc && state->Vpp != 0) { |
| printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n", |
| __func__, state->Vpp); |
| 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); |
| sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set); |
| } |
| |
| #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); |
| sa1111_set_io(s->dev, pa_dwr_mask, 0); |
| |
| /* |
| * 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 |
| * avaliable in the seat pocket in front of you! |
| */ |
| ((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, |
| .hw_init = sa1111_pcmcia_hw_init, |
| .hw_shutdown = sa1111_pcmcia_hw_shutdown, |
| .socket_state = sa1111_pcmcia_socket_state, |
| .configure_socket = lubbock_pcmcia_configure_socket, |
| .socket_init = sa1111_pcmcia_socket_init, |
| .socket_suspend = sa1111_pcmcia_socket_suspend, |
| .first = 0, |
| .nr = 2, |
| }; |
| |
| #include "pxa2xx_base.h" |
| |
| int pcmcia_lubbock_init(struct sa1111_dev *sadev) |
| { |
| int ret = -ENODEV; |
| |
| if (machine_is_lubbock()) { |
| /* |
| * 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); |
| |
| /* Set CF Socket 1 power to standby mode. */ |
| lubbock_set_misc_wr((1 << 15) | (1 << 14), 0); |
| |
| pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops); |
| ret = sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops, |
| pxa2xx_drv_pcmcia_add_one); |
| } |
| |
| return ret; |
| } |
| |
| MODULE_LICENSE("GPL"); |