patch-2.4.20 linux-2.4.20/drivers/pcmcia/au1000_pb1x00.c

• Lines: 412
• Date: Thu Nov 28 15:53:14 2002
• Orig file: linux-2.4.19/drivers/pcmcia/au1000_pb1x00.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/drivers/pcmcia/au1000_pb1x00.c linux-2.4.20/drivers/pcmcia/au1000_pb1x00.c
@@ -0,0 +1,411 @@
+/*
+ *
+ * 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>
+
+#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 AU1000_GPIO_11   /* fixme */
+#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(PB1100_MEM_PCMCIA) & ~0xf; /* turn off power */
+	pcr &= ~(PB1100_PC_DEASSERT_RST | PB1100_PC_DRV_EN);
+	au_writew(pcr, PB1100_MEM_PCMCIA);
+	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(PB1100_MEM_PCMCIA) & ~0xf; /* turn off power */
+	pcr &= ~(PB1100_PC_DEASSERT_RST | PB1100_PC_DRV_EN);
+	au_writew(pcr, PB1100_MEM_PCMCIA);
+	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(PB1100_BOARD_STATUS) >> 4) & 0x3;
+	inserted0 = !((au_readl(SYS_PINSTATERD) >> 9) & 0x1); /* gpio 9 */
+#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;
+			}
+			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;
+			}
+			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(KERN_INFO "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(PB1100_MEM_PCMCIA) & ~0xf;
+
+	DEBUG(KERN_INFO "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, PB1100_MEM_PCMCIA);
+	au_sync_delay(300);
+
+	if (!configure->reset) {
+		pcr |= PB1100_PC_DRV_EN;
+		au_writew(pcr, PB1100_MEM_PCMCIA);
+		au_sync_delay(100);
+		pcr |= PB1100_PC_DEASSERT_RST;
+		au_writew(pcr, PB1100_MEM_PCMCIA);
+		au_sync_delay(100);
+	}
+	else {
+		pcr &= ~(PB1100_PC_DEASSERT_RST | PB1100_PC_DRV_EN);
+		au_writew(pcr, PB1100_MEM_PCMCIA);
+		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
+};