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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_xxs1500.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_xxs1500.c')
-rw-r--r-- | drivers/pcmcia/au1000_xxs1500.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/pcmcia/au1000_xxs1500.c b/drivers/pcmcia/au1000_xxs1500.c new file mode 100644 index 0000000..1dfc776 --- /dev/null +++ b/drivers/pcmcia/au1000_xxs1500.c @@ -0,0 +1,191 @@ +/* + * + * MyCable board specific pcmcia routines. + * + * Copyright 2003 MontaVista Software Inc. + * Author: Pete Popov, 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/config.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> +#include <asm/xxs1500.h> + +#if 0 +#define DEBUG(x,args...) printk(__FUNCTION__ ": " x,##args) +#else +#define DEBUG(x,args...) +#endif + +static int xxs1500_pcmcia_init(struct pcmcia_init *init) +{ + return PCMCIA_NUM_SOCKS; +} + +static int xxs1500_pcmcia_shutdown(void) +{ + /* turn off power */ + au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), + GPIO2_OUTPUT); + au_sync_delay(100); + + /* assert reset */ + au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), + GPIO2_OUTPUT); + au_sync_delay(100); + return 0; +} + + +static int +xxs1500_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state) +{ + u32 inserted; u32 vs; + unsigned long gpio, gpio2; + + if(sock > PCMCIA_MAX_SOCK) return -1; + + gpio = au_readl(SYS_PINSTATERD); + gpio2 = au_readl(GPIO2_PINSTATE); + + vs = gpio2 & ((1<<8) | (1<<9)); + inserted = (!(gpio & 0x1) && !(gpio & 0x2)); + + state->ready = 0; + state->vs_Xv = 0; + state->vs_3v = 0; + state->detect = 0; + + if (inserted) { + switch (vs) { + case 0: + case 1: + case 2: + state->vs_3v=1; + break; + case 3: /* 5V */ + default: + /* return without setting 'detect' */ + printk(KERN_ERR "au1x00_cs: unsupported VS\n", + vs); + return; + } + state->detect = 1; + } + + if (state->detect) { + state->ready = 1; + } + + state->bvd1= gpio2 & (1<<10); + state->bvd2 = gpio2 & (1<<11); + state->wrprot=0; + return 1; +} + + +static int xxs1500_pcmcia_get_irq_info(struct pcmcia_irq_info *info) +{ + + if(info->sock > PCMCIA_MAX_SOCK) return -1; + info->irq = PCMCIA_IRQ; + return 0; +} + + +static int +xxs1500_pcmcia_configure_socket(const struct pcmcia_configure *configure) +{ + + if(configure->sock > PCMCIA_MAX_SOCK) return -1; + + DEBUG("Vcc %dV Vpp %dV, reset %d\n", + configure->vcc, configure->vpp, configure->reset); + + switch(configure->vcc){ + case 33: /* Vcc 3.3V */ + /* turn on power */ + DEBUG("turn on power\n"); + au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<14))|(1<<30), + GPIO2_OUTPUT); + au_sync_delay(100); + break; + case 50: /* Vcc 5V */ + default: /* what's this ? */ + printk(KERN_ERR "au1x00_cs: unsupported VCC\n"); + case 0: /* Vcc 0 */ + /* turn off power */ + au_sync_delay(100); + au_writel(au_readl(GPIO2_PINSTATE) | (1<<14)|(1<<30), + GPIO2_OUTPUT); + break; + } + + if (!configure->reset) { + DEBUG("deassert reset\n"); + au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<4))|(1<<20), + GPIO2_OUTPUT); + au_sync_delay(100); + au_writel((au_readl(GPIO2_PINSTATE) & ~(1<<5))|(1<<21), + GPIO2_OUTPUT); + } + else { + DEBUG("assert reset\n"); + au_writel(au_readl(GPIO2_PINSTATE) | (1<<4)|(1<<20), + GPIO2_OUTPUT); + } + au_sync_delay(100); + return 0; +} + +struct pcmcia_low_level xxs1500_pcmcia_ops = { + xxs1500_pcmcia_init, + xxs1500_pcmcia_shutdown, + xxs1500_pcmcia_socket_state, + xxs1500_pcmcia_get_irq_info, + xxs1500_pcmcia_configure_socket +}; |