| /* |
| * |
| * Alchemy Semi Pb1x00 boards specific pcmcia routines. |
| * |
| * Copyright 2002 MontaVista Software Inc. |
| * Author: MontaVista Software, Inc. |
| * ppopov@mvista.com or source@mvista.com |
| * |
| * ######################################################################## |
| * |
| * This program is free software; you can distribute it and/or modify it |
| * under the terms of the GNU General Public License (Version 2) as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| */ |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/ioport.h> |
| #include <linux/kernel.h> |
| #include <linux/tqueue.h> |
| #include <linux/timer.h> |
| #include <linux/mm.h> |
| #include <linux/proc_fs.h> |
| #include <linux/types.h> |
| |
| #include <pcmcia/cs_types.h> |
| #include <pcmcia/cs.h> |
| #include <pcmcia/ss.h> |
| #include <pcmcia/bulkmem.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/bus_ops.h> |
| #include "cs_internal.h" |
| |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/system.h> |
| |
| #include <asm/au1000.h> |
| #include <asm/au1000_pcmcia.h> |
| |
| #define debug(fmt, arg...) do { } while (0) |
| |
| #ifdef CONFIG_MIPS_PB1000 |
| #include <asm/pb1000.h> |
| #define PCMCIA_IRQ AU1000_GPIO_15 |
| #elif defined (CONFIG_MIPS_PB1500) |
| #include <asm/pb1500.h> |
| #define PCMCIA_IRQ AU1500_GPIO_203 |
| #elif defined (CONFIG_MIPS_PB1100) |
| #include <asm/pb1100.h> |
| #define PCMCIA_IRQ AU1000_GPIO_11 |
| #endif |
| |
| static int pb1x00_pcmcia_init(struct pcmcia_init *init) |
| { |
| #ifdef CONFIG_MIPS_PB1000 |
| u16 pcr; |
| pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST; |
| |
| au_writel(0x8000, PB1000_MDR); /* clear pcmcia interrupt */ |
| au_sync_delay(100); |
| au_writel(0x4000, PB1000_MDR); /* enable pcmcia interrupt */ |
| au_sync(); |
| |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0); |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1); |
| au_writel(pcr, PB1000_PCR); |
| au_sync_delay(20); |
| |
| return PCMCIA_NUM_SOCKS; |
| |
| #else /* fixme -- take care of the Pb1500 at some point */ |
| |
| u16 pcr; |
| pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */ |
| pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN); |
| au_writew(pcr, PCMCIA_BOARD_REG); |
| au_sync_delay(500); |
| return PCMCIA_NUM_SOCKS; |
| #endif |
| } |
| |
| static int pb1x00_pcmcia_shutdown(void) |
| { |
| #ifdef CONFIG_MIPS_PB1000 |
| u16 pcr; |
| pcr = PCR_SLOT_0_RST | PCR_SLOT_1_RST; |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,0); |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,1); |
| au_writel(pcr, PB1000_PCR); |
| au_sync_delay(20); |
| return 0; |
| #else |
| u16 pcr; |
| pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; /* turn off power */ |
| pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN); |
| au_writew(pcr, PCMCIA_BOARD_REG); |
| au_sync_delay(2); |
| return 0; |
| #endif |
| } |
| |
| static int |
| pb1x00_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) |
| { |
| u32 inserted0, inserted1; |
| u16 vs0, vs1; |
| |
| #ifdef CONFIG_MIPS_PB1000 |
| vs0 = vs1 = (u16)au_readl(PB1000_ACR1); |
| inserted0 = !(vs0 & (ACR1_SLOT_0_CD1 | ACR1_SLOT_0_CD2)); |
| inserted1 = !(vs1 & (ACR1_SLOT_1_CD1 | ACR1_SLOT_1_CD2)); |
| vs0 = (vs0 >> 4) & 0x3; |
| vs1 = (vs1 >> 12) & 0x3; |
| #else |
| vs0 = (au_readw(BOARD_STATUS_REG) >> 4) & 0x3; |
| #ifdef CONFIG_MIPS_PB1500 |
| inserted0 = !((au_readl(GPIO2_PINSTATE) >> 1) & 0x1); /* gpio 201 */ |
| #else /* Pb1100 */ |
| inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */ |
| #endif |
| inserted1 = 0; |
| #endif |
| |
| state->ready = 0; |
| state->vs_Xv = 0; |
| state->vs_3v = 0; |
| state->detect = 0; |
| |
| if (sock == 0) { |
| if (inserted0) { |
| switch (vs0) { |
| case 0: |
| case 2: |
| state->vs_3v=1; |
| break; |
| case 3: /* 5V */ |
| break; |
| default: |
| /* return without setting 'detect' */ |
| printk(KERN_ERR "pb1x00 bad VS (%d)\n", |
| vs0); |
| return 0; |
| } |
| state->detect = 1; |
| } |
| } |
| else { |
| if (inserted1) { |
| switch (vs1) { |
| case 0: |
| case 2: |
| state->vs_3v=1; |
| break; |
| case 3: /* 5V */ |
| break; |
| default: |
| /* return without setting 'detect' */ |
| printk(KERN_ERR "pb1x00 bad VS (%d)\n", |
| vs1); |
| return 0; |
| } |
| state->detect = 1; |
| } |
| } |
| |
| if (state->detect) { |
| state->ready = 1; |
| } |
| |
| state->bvd1=1; |
| state->bvd2=1; |
| state->wrprot=0; |
| return 1; |
| } |
| |
| |
| static int pb1x00_pcmcia_get_irq_info(struct pcmcia_irq_info *info) |
| { |
| |
| if(info->sock > PCMCIA_MAX_SOCK) return -1; |
| |
| /* |
| * Even in the case of the Pb1000, both sockets are connected |
| * to the same irq line. |
| */ |
| info->irq = PCMCIA_IRQ; |
| |
| return 0; |
| } |
| |
| |
| static int |
| pb1x00_pcmcia_configure_socket(const struct pcmcia_configure *configure) |
| { |
| u16 pcr; |
| |
| if(configure->sock > PCMCIA_MAX_SOCK) return -1; |
| |
| #ifdef CONFIG_MIPS_PB1000 |
| pcr = au_readl(PB1000_PCR); |
| |
| if (configure->sock == 0) { |
| pcr &= ~(PCR_SLOT_0_VCC0 | PCR_SLOT_0_VCC1 | |
| PCR_SLOT_0_VPP0 | PCR_SLOT_0_VPP1); |
| } |
| else { |
| pcr &= ~(PCR_SLOT_1_VCC0 | PCR_SLOT_1_VCC1 | |
| PCR_SLOT_1_VPP0 | PCR_SLOT_1_VPP1); |
| } |
| |
| pcr &= ~PCR_SLOT_0_RST; |
| debug("Vcc %dV Vpp %dV, pcr %x\n", |
| configure->vcc, configure->vpp, pcr); |
| switch(configure->vcc){ |
| case 0: /* Vcc 0 */ |
| switch(configure->vpp) { |
| case 0: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_GND, |
| configure->sock); |
| break; |
| case 12: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_12V, |
| configure->sock); |
| break; |
| case 50: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_5V, |
| configure->sock); |
| break; |
| case 33: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_3V, |
| configure->sock); |
| break; |
| default: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ, |
| configure->sock); |
| printk("%s: bad Vcc/Vpp (%d:%d)\n", |
| __func__, |
| configure->vcc, |
| configure->vpp); |
| break; |
| } |
| break; |
| case 50: /* Vcc 5V */ |
| switch(configure->vpp) { |
| case 0: |
| pcr |= SET_VCC_VPP(VCC_5V,VPP_GND, |
| configure->sock); |
| break; |
| case 50: |
| pcr |= SET_VCC_VPP(VCC_5V,VPP_5V, |
| configure->sock); |
| break; |
| case 12: |
| pcr |= SET_VCC_VPP(VCC_5V,VPP_12V, |
| configure->sock); |
| break; |
| case 33: |
| pcr |= SET_VCC_VPP(VCC_5V,VPP_3V, |
| configure->sock); |
| break; |
| default: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ, |
| configure->sock); |
| printk("%s: bad Vcc/Vpp (%d:%d)\n", |
| __func__, |
| configure->vcc, |
| configure->vpp); |
| break; |
| } |
| break; |
| case 33: /* Vcc 3.3V */ |
| switch(configure->vpp) { |
| case 0: |
| pcr |= SET_VCC_VPP(VCC_3V,VPP_GND, |
| configure->sock); |
| break; |
| case 50: |
| pcr |= SET_VCC_VPP(VCC_3V,VPP_5V, |
| configure->sock); |
| break; |
| case 12: |
| pcr |= SET_VCC_VPP(VCC_3V,VPP_12V, |
| configure->sock); |
| break; |
| case 33: |
| pcr |= SET_VCC_VPP(VCC_3V,VPP_3V, |
| configure->sock); |
| break; |
| default: |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ, |
| configure->sock); |
| printk("%s: bad Vcc/Vpp (%d:%d)\n", |
| __func__, |
| configure->vcc, |
| configure->vpp); |
| break; |
| } |
| break; |
| default: /* what's this ? */ |
| pcr |= SET_VCC_VPP(VCC_HIZ,VPP_HIZ,configure->sock); |
| printk(KERN_ERR "%s: bad Vcc %d\n", |
| __func__, configure->vcc); |
| break; |
| } |
| |
| if (configure->sock == 0) { |
| pcr &= ~(PCR_SLOT_0_RST); |
| if (configure->reset) |
| pcr |= PCR_SLOT_0_RST; |
| } |
| else { |
| pcr &= ~(PCR_SLOT_1_RST); |
| if (configure->reset) |
| pcr |= PCR_SLOT_1_RST; |
| } |
| au_writel(pcr, PB1000_PCR); |
| au_sync_delay(300); |
| |
| #else |
| |
| pcr = au_readw(PCMCIA_BOARD_REG) & ~0xf; |
| |
| debug("Vcc %dV Vpp %dV, pcr %x, reset %d\n", |
| configure->vcc, configure->vpp, pcr, configure->reset); |
| |
| |
| switch(configure->vcc){ |
| case 0: /* Vcc 0 */ |
| pcr |= SET_VCC_VPP(0,0); |
| break; |
| case 50: /* Vcc 5V */ |
| switch(configure->vpp) { |
| case 0: |
| pcr |= SET_VCC_VPP(2,0); |
| break; |
| case 50: |
| pcr |= SET_VCC_VPP(2,1); |
| break; |
| case 12: |
| pcr |= SET_VCC_VPP(2,2); |
| break; |
| case 33: |
| default: |
| pcr |= SET_VCC_VPP(0,0); |
| printk("%s: bad Vcc/Vpp (%d:%d)\n", |
| __func__, |
| configure->vcc, |
| configure->vpp); |
| break; |
| } |
| break; |
| case 33: /* Vcc 3.3V */ |
| switch(configure->vpp) { |
| case 0: |
| pcr |= SET_VCC_VPP(1,0); |
| break; |
| case 12: |
| pcr |= SET_VCC_VPP(1,2); |
| break; |
| case 33: |
| pcr |= SET_VCC_VPP(1,1); |
| break; |
| case 50: |
| default: |
| pcr |= SET_VCC_VPP(0,0); |
| printk("%s: bad Vcc/Vpp (%d:%d)\n", |
| __func__, |
| configure->vcc, |
| configure->vpp); |
| break; |
| } |
| break; |
| default: /* what's this ? */ |
| pcr |= SET_VCC_VPP(0,0); |
| printk(KERN_ERR "%s: bad Vcc %d\n", |
| __func__, configure->vcc); |
| break; |
| } |
| |
| au_writew(pcr, PCMCIA_BOARD_REG); |
| au_sync_delay(300); |
| |
| if (!configure->reset) { |
| pcr |= PC_DRV_EN; |
| au_writew(pcr, PCMCIA_BOARD_REG); |
| au_sync_delay(100); |
| pcr |= PC_DEASSERT_RST; |
| au_writew(pcr, PCMCIA_BOARD_REG); |
| au_sync_delay(100); |
| } |
| else { |
| pcr &= ~(PC_DEASSERT_RST | PC_DRV_EN); |
| au_writew(pcr, PCMCIA_BOARD_REG); |
| au_sync_delay(100); |
| } |
| #endif |
| return 0; |
| } |
| |
| |
| struct pcmcia_low_level pb1x00_pcmcia_ops = { |
| pb1x00_pcmcia_init, |
| pb1x00_pcmcia_shutdown, |
| pb1x00_pcmcia_socket_state, |
| pb1x00_pcmcia_get_irq_info, |
| pb1x00_pcmcia_configure_socket |
| }; |