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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/au1000_pb1x00.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/pcmcia/au1000_pb1x00.c')
-rw-r--r-- | drivers/pcmcia/au1000_pb1x00.c | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/drivers/pcmcia/au1000_pb1x00.c b/drivers/pcmcia/au1000_pb1x00.c new file mode 100644 index 0000000..df19ce1 --- /dev/null +++ b/drivers/pcmcia/au1000_pb1x00.c @@ -0,0 +1,419 @@ +/* + * + * 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/version.h> +#include <linux/types.h> + +#include <pcmcia/version.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", + __FUNCTION__, + 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", + __FUNCTION__, + 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", + __FUNCTION__, + 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", + __FUNCTION__, 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", + __FUNCTION__, + 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", + __FUNCTION__, + configure->vcc, + configure->vpp); + break; + } + break; + default: /* what's this ? */ + pcr |= SET_VCC_VPP(0,0); + printk(KERN_ERR "%s: bad Vcc %d\n", + __FUNCTION__, 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 +}; |