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path: root/recipes/linux/linux-2.6.31/collie/0001-add-locomo_spi-driver.patch
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Diffstat (limited to 'recipes/linux/linux-2.6.31/collie/0001-add-locomo_spi-driver.patch')
-rw-r--r--recipes/linux/linux-2.6.31/collie/0001-add-locomo_spi-driver.patch1228
1 files changed, 1228 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.31/collie/0001-add-locomo_spi-driver.patch b/recipes/linux/linux-2.6.31/collie/0001-add-locomo_spi-driver.patch
new file mode 100644
index 0000000000..61880876e1
--- /dev/null
+++ b/recipes/linux/linux-2.6.31/collie/0001-add-locomo_spi-driver.patch
@@ -0,0 +1,1228 @@
+From f9a6c1625c0e415ecb3ae83d158ce1087e647b7c Mon Sep 17 00:00:00 2001
+From: Thomas Kunze <thommycheck@gmx.de>
+Date: Mon, 20 Oct 2008 17:30:32 +0200
+Subject: [PATCH 01/15] add locomo_spi driver
+
+---
+ drivers/spi/Kconfig | 4 +
+ drivers/spi/Makefile | 1 +
+ drivers/spi/locomo_spi.c | 1097 ++++++++++++++++++++++++++++++++++++++++++++++
+ drivers/spi/locomo_spi.h | 75 ++++
+ 4 files changed, 1177 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/spi/locomo_spi.c
+ create mode 100644 drivers/spi/locomo_spi.h
+
+diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
+index 2c733c2..b72756d 100644
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -139,6 +139,10 @@ config SPI_MPC52xx_PSC
+ This enables using the Freescale MPC52xx Programmable Serial
+ Controller in master SPI mode.
+
++config SPI_LOCOMO
++ tristate "Locomo SPI master"
++ depends on SPI_MASTER && SHARP_LOCOMO && EXPERIMENTAL
++
+ config SPI_MPC8xxx
+ tristate "Freescale MPC8xxx SPI controller"
+ depends on FSL_SOC
+diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
+index 3de408d..7618f08 100644
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -31,6 +31,7 @@ obj-$(CONFIG_SPI_S3C24XX) += spi_s3c24xx.o
+ obj-$(CONFIG_SPI_TXX9) += spi_txx9.o
+ obj-$(CONFIG_SPI_XILINX) += xilinx_spi.o
+ obj-$(CONFIG_SPI_SH_SCI) += spi_sh_sci.o
++obj-$(CONFIG_SPI_LOCOMO) += locomo_spi.o
+ # ... add above this line ...
+
+ # SPI protocol drivers (device/link on bus)
+diff --git a/drivers/spi/locomo_spi.c b/drivers/spi/locomo_spi.c
+new file mode 100644
+index 0000000..d3a4bd9
+--- /dev/null
++++ b/drivers/spi/locomo_spi.c
+@@ -0,0 +1,1097 @@
++#include <asm/io.h>
++#include <asm/irq.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/device.h>
++#include <linux/stat.h>
++#include <linux/delay.h>
++#include <linux/wait.h>
++#include <linux/interrupt.h>
++#include <asm/hardware/locomo.h>
++#include <asm/errno.h>
++#include <linux/mmc/host.h>
++#include <linux/spi/spi.h>
++#include <linux/spi/mmc_spi.h>
++#include <linux/workqueue.h>
++#include <linux/spinlock.h>
++#include <linux/list.h>
++#include "locomo_spi.h"
++static struct locomospi_dev * spidev;
++static struct work_struct transfer_wq;
++int delay;
++
++char* transtxbuf=(char*)NULL;
++char* transrxbuf=(char*)NULL;
++int transfercount=0, transfersize=0;
++static DECLARE_WAIT_QUEUE_HEAD(transferqueue);
++/* MMC_SPI functions *********************************************************/
++
++static int locomommcspi_init(struct device *dev, irqreturn_t (*isr)(int, void*), void *mmc)
++{
++ int result;
++ result=request_irq(IRQ_LOCOMO_CARDDETECT, isr, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "locomo-spi", mmc);
++ return result;
++}
++
++static void locomommcspi_exit(struct device *dev, void* mmc)
++{
++ free_irq(IRQ_LOCOMO_CARDDETECT, mmc);
++}
++
++static int locomommcspi_getro(struct device *dev)
++{
++ return locomo_gpio_read_level(spidev->ldev->dev.parent,LOCOMO_GPIO_WRITE_PROT) > 0 ? 1 : 0;
++}
++
++static void locomommcspi_setpower(struct device *dev, unsigned int mask)
++{
++ if(!mask && spidev->card_power)
++ locomospi_power(0);
++ else if( !spidev->card_power )
++ locomospi_power(1);
++
++}
++
++
++static struct mmc_spi_platform_data colliemmc ={
++ .init = locomommcspi_init,
++ .exit = locomommcspi_exit,
++ .detect_delay = 200,
++ .get_ro = locomommcspi_getro,
++ .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
++ .setpower = locomommcspi_setpower,
++ .powerup_msecs = 200,
++};
++
++/* Utility function **********************************************************/
++
++static void locomospi_power(int on)
++{
++ locomo_gpio_write(spidev->ldev->dev.parent, LOCOMO_GPIO_CARD_POWER, on);
++ spidev->card_power=on;
++ printk(KERN_DEBUG "locomospi: power %d\n",on);
++}
++
++static void locomospi_setclock(unsigned int div, unsigned int clock)
++{
++ u16 r = ioread16(spidev->base+LOCOMO_SPIMD);
++ div &= 0x7;
++ clock &= 0x3;
++ if(clock != spidev->clock_base || div != spidev->clock_div){
++ r &= ~(LOCOMO_SPI_XSEL | LOCOMO_SPI_CLKSEL | LOCOMO_SPI_XEN);
++ iowrite16(r,spidev->base+LOCOMO_SPIMD);
++ r |= (div | (clock <<3) | LOCOMO_SPI_XEN);
++ iowrite16(r,spidev->base+LOCOMO_SPIMD);
++ spidev->clock_div = div;
++ spidev->clock_base = clock;
++ udelay(300);
++ }
++
++}
++// returns 1 if card ist present, 0 otherwise
++static int locomospi_carddetect()
++{
++ return (locomo_gpio_read_level(spidev->ldev->dev.parent,LOCOMO_GPIO_CARD_DETECT)>0)?0:1;
++}
++
++static void locomospi_setcs(int high)
++{
++ u16 r;
++ printk(KERN_DEBUG "locomospi: cs %d\n",high);
++ r = ioread16(spidev->base + LOCOMO_SPICT);
++ if(high)
++ r |= LOCOMO_SPI_CS;
++ else
++ r &= ~LOCOMO_SPI_CS;
++ iowrite16(r, spidev->base + LOCOMO_SPICT);
++}
++
++static void locomospi_reg_open()
++{
++ u16 r;
++ spidev->clock_div = DIV_64;
++ spidev->clock_base = CLOCK_18MHZ;
++ locomospi_power(1);
++ msleep(100);
++// iowrite16( 0xec00 | (CLOCK_18MHZ <<3)|DIV_64, spidev->base+LOCOMO_SPIMD);
++ iowrite16( LOCOMO_SPI_MSB1ST | LOCOMO_SPI_DOSTAT | LOCOMO_SPI_RCPOL | LOCOMO_SPI_TCPOL
++ |(CLOCK_18MHZ <<3) | DIV_64, spidev->base+LOCOMO_SPIMD);
++// if(locomospi_carddetect()){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16( r, spidev->base+LOCOMO_SPIMD);
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XEN;
++ iowrite16( r, spidev->base+LOCOMO_SPIMD);
++// }
++ iowrite16( LOCOMO_SPI_CS, spidev->base+LOCOMO_SPICT);
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r |= (LOCOMO_SPI_CEN | LOCOMO_SPI_RXUEN | LOCOMO_SPI_ALIGNEN);
++ iowrite16( r, spidev->base+LOCOMO_SPICT);
++ udelay(200);
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r &= ~LOCOMO_SPI_CS;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++}
++
++static void locomospi_reg_release()
++{
++ u16 r;
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r &= ~LOCOMO_SPI_CEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r &= ~LOCOMO_SPI_XEN;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r &= ~LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r |= LOCOMO_SPI_XEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++ locomospi_power(0);
++}
++#if 0
++static int txrx(const char* txbuffer, char* rxbuffer, int size)
++{
++ u16 r = ioread16(spidev->base+LOCOMO_SPICT);
++ r |= LOCOMO_SPI_ALIGNEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++ printk(KERN_DEBUG "locomospi: %d bytes to prozess\n",size);
++ /* initialize global vars for isr */
++ transfercount=0; transfersize=size;
++ transtxbuf=txbuffer; transrxbuf=rxbuffer;
++
++ /* start transmit and go sleep isr will wake us*/
++ enable_irq(IRQ_LOCOMO_SPI_TEND);
++ iowrite8(txbuffer[0], spidev->base+LOCOMO_SPITD);
++ wait_event(transferqueue, transfercount >= transfersize);
++ disable_irq(IRQ_LOCOMO_SPI_TEND);
++ transrxbuf=NULL; transtxbuf=NULL;
++
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r &= ~LOCOMO_SPI_ALIGNEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++ int i;
++ for(i=0; i< size; i++)
++ printk(KERN_DEBUG "locomospi: sent: %x received: %x \n",txbuffer[i], rxbuffer[i]);
++
++
++ return size;
++}
++
++
++static int tx(const char* txbuffer, int size)
++{
++ printk(KERN_DEBUG "locomospi: %d bytes to send\n",size);
++ /* initialize global vars for isr */
++ transfercount=0; transfersize=size;
++ transtxbuf=txbuffer;
++
++ /* start transmit and go sleep isr will wake us*/
++ enable_irq(IRQ_LOCOMO_SPI_RFW);
++ iowrite8(txbuffer[0], spidev->base+LOCOMO_SPITD);
++ wait_event(transferqueue, transfercount >= transfersize);
++ disable_irq(IRQ_LOCOMO_SPI_RFW);
++ transtxbuf=NULL;
++
++ int i;
++ for(i=0; i< size; i++)
++ printk(KERN_DEBUG "locomospi: sent: %x\n",txbuffer[i]);
++
++
++ return size;
++}
++
++static int rx(char* rxbuffer, int size)
++{
++ printk(KERN_DEBUG "locomospi: %d bytes to read\n",size);
++ /* initialize global vars for isr */
++ transfercount=0; transfersize=size;
++ transrxbuf=rxbuffer;
++
++ /* start transmit and go sleep isr will wake us*/
++ enable_irq(IRQ_LOCOMO_SPI_RFR);
++ rxbuffer[0]=ioread8(spidev->base+LOCOMO_SPIRD);
++ wait_event(transferqueue, transfercount >= transfersize);
++ disable_irq(IRQ_LOCOMO_SPI_RFR);
++ transrxbuf=NULL;
++
++ int i;
++ for(i=0; i< size; i++)
++ printk(KERN_DEBUG "locomospi: received: %x \n", rxbuffer[i]);
++
++
++ return size;
++}
++
++#else
++static int txrx(const char* txbuffer, char* rxbuffer, int size)
++{
++ int i=0,j=0;
++ int wait;
++ u16 r;
++/* char * txback = kmalloc(size * sizeof(char), GFP_KERNEL);
++ memcpy(txback, txbuffer, size);
++*/
++ if(spidev->clock_div == 4)
++ wait = 0x10000;
++ else
++ wait = 8;
++
++// printk(KERN_DEBUG "locomospi: txrx %d bytes to prozess\n",size);
++
++// r = ioread16(spidev->base+LOCOMO_SPICT);
++// r |= LOCOMO_SPI_ALIGNEN;
++// iowrite16(r, spidev->base+LOCOMO_SPICT);
++ //discard first bogus byte
++
++ ioread8(spidev->base+LOCOMO_SPIRD);
++ for(i=0; i<size; i++){
++ for(j=0; j <= wait; j++){
++ if(ioread16(spidev->base+LOCOMO_SPIST) & LOCOMO_SPI_RFW)
++ break;
++ }
++ iowrite8(txbuffer[i], spidev->base+LOCOMO_SPITD);
++ ndelay(delay);
++
++ for(j=0; j <= wait; j++){
++ if(ioread16(spidev->base+LOCOMO_SPIST) & LOCOMO_SPI_RFR)
++ break;
++ }
++ rxbuffer[i] = ioread8(spidev->base+LOCOMO_SPIRD);
++ ndelay(delay);
++ }
++// r = ioread16(spidev->base+LOCOMO_SPICT);
++// r &= ~LOCOMO_SPI_ALIGNEN;
++// iowrite16(r, spidev->base+LOCOMO_SPICT);
++
++/* for(j=0; j< size; j++)
++ printk(KERN_DEBUG "locomospi: sent: %x received: %x \n",txback[j], rxbuffer[j]);
++
++ kfree(txback);
++*/ return i;
++}
++
++static int tx(const char* buffer, int size)
++{
++ int i=0,j=0;
++ int wait;
++ u16 r;
++ if(spidev->clock_div == 4)
++ wait = 0x10000;
++ else
++ wait = 8;
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r &= ~LOCOMO_SPI_ALIGNEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++
++// printk(KERN_DEBUG "locomospi: tx %d bytes to transmit\n",size);
++ for(i=0; i<size; i++){
++ for(j=0; j <= wait; j++){
++ if(ioread16(spidev->base+LOCOMO_SPIST) & LOCOMO_SPI_RFW)
++ break;
++ }
++ iowrite8(buffer[i], spidev->base+LOCOMO_SPITD);
++ ndelay(delay);
++ }
++
++ for(j=0; j <= wait; j++){
++ if(ioread16(spidev->base+LOCOMO_SPIST) & LOCOMO_SPI_TEND)
++ break;
++ }
++
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r |= LOCOMO_SPI_ALIGNEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++
++// for(j=0; j< size; j++)
++// printk(KERN_DEBUG "locomospi: sent: %x \n", buffer[j]);
++// printk(KERN_DEBUG "locomospi: tx %d bytes transmitted\n",i);
++ return i;
++}
++
++static int rx(char* buffer, int size)
++{
++ int i,j;
++ int wait;
++ u16 r;
++ printk(KERN_DEBUG "locomospi: rx %d bytes to receive\n",size);
++ if(spidev->clock_div == 4)
++ wait = 0x10000;
++ else
++ wait = 8;
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r &= ~LOCOMO_SPI_ALIGNEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++
++ for(i=0; i<size; i++){
++
++ for(j=0; j <= wait; j++){
++ if(ioread16(spidev->base+LOCOMO_SPIST) & LOCOMO_SPI_RFR)
++ break;
++ }
++ buffer[i]= ioread8(spidev->base+LOCOMO_SPIRD);
++ ndelay(delay);
++ }
++
++ r = ioread16(spidev->base+LOCOMO_SPICT);
++ r |= LOCOMO_SPI_ALIGNEN;
++ iowrite16(r, spidev->base+LOCOMO_SPICT);
++
++ for(j=0; j< size; j++)
++ printk(KERN_DEBUG "locomospi: received: %x \n", buffer[j]);
++ printk(KERN_DEBUG "locomospi: rx %d bytes received\n",i);
++ return i;
++}
++#endif
++/*
++static irqreturn_t locomospi_rwready(int irq, void *dev_id)
++{
++ struct locomospi_dev* dev=(struct locomospi_dev*) dev_id;
++// dev_dbg(&spidev->sdev->dev, "IRQ: %d\n", irq);
++// printk(KERN_DEBUG "locomospi: IRQ: %d\n", irq);
++ wake_up_interruptible(&dev->waitqueue);
++ return IRQ_HANDLED;
++}
++*/
++static irqreturn_t locomospi_testisr(int irq, void *dev_id)
++{
++ char *buf="";
++ switch(irq){
++ case IRQ_LOCOMO_SPI_RFR: buf="RFR";
++ break;
++ case IRQ_LOCOMO_SPI_RFW: buf="RFW";
++ break;
++ case IRQ_LOCOMO_SPI_REND:buf="REND";
++ break;
++ case IRQ_LOCOMO_SPI_TEND:buf="TEND";
++ break;
++ case IRQ_LOCOMO_CARDDETECT:
++ buf="CARD_DETECT";
++ break;
++ default: return IRQ_NONE;
++ }
++ printk(KERN_DEBUG "locomospi: IRQ: %s\n",buf);
++// dev_dbg(&spidev->sdev->dev, "IRQ: %s\n",buf);
++ return IRQ_HANDLED;
++}
++static irqreturn_t locomospi_txrxisr(int irq, void *dev_id)
++{
++ if(transfercount < transfersize){
++ transrxbuf[transfercount++] = ioread8(spidev->base+LOCOMO_SPIRD);
++ iowrite8(transtxbuf[transfercount], spidev->base+LOCOMO_SPITD);
++ }
++ else{
++ /* transfer complete. wake up txrx */
++ wake_up(&transferqueue);
++ }
++ return IRQ_HANDLED;
++}
++
++static irqreturn_t locomospi_txisr(int irq, void *dev_id)
++{
++ if(transfercount < transfersize){
++ iowrite8(transtxbuf[transfercount++], spidev->base+LOCOMO_SPITD);
++ }
++ else{
++ /* transfer complete. wake up txrx */
++ wake_up(&transferqueue);
++ }
++ return IRQ_HANDLED;
++}
++
++static irqreturn_t locomospi_rxisr(int irq, void *dev_id)
++{
++ if(transfercount < transfersize){
++ transrxbuf[transfercount++] = ioread8(spidev->base+LOCOMO_SPIRD);
++ }
++ else{
++ /* transfer complete. wake up txrx */
++ wake_up(&transferqueue);
++ }
++ return IRQ_HANDLED;
++}
++
++static void locomospi_clock(unsigned int Hz)
++{
++ u16 r;
++ printk(KERN_DEBUG "locomospi: changing clock to: %d\n", Hz);
++ if(Hz == 0){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r &= ~LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ }
++ else if(Hz >= 24576000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_1, CLOCK_25MHZ);
++ delay=41;
++ }
++ else if(Hz >= 22579200){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_1, CLOCK_22MHZ);
++ delay=45;
++ }
++ else if(Hz >= 18432000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_1, CLOCK_18MHZ);
++ delay=55;
++ }
++ else if(Hz >= 12288000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_2, CLOCK_25MHZ);
++ delay=82;
++ }
++ else if(Hz >= 11289600){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_2, CLOCK_22MHZ);
++ delay=89;
++ }
++ else if(Hz >= 9216000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_2, CLOCK_18MHZ);
++ delay=110;
++ }
++ else if(Hz >= 6144000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_4, CLOCK_25MHZ);
++ delay=164;
++ }
++ else if(Hz >= 5644800){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_4, CLOCK_22MHZ);
++ delay=178;
++ }
++ else if(Hz >= 4608000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_4, CLOCK_18MHZ);
++ delay=218;
++ }
++ else if(Hz >= 3072000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_8, CLOCK_25MHZ);
++ delay=327;
++ }
++ else if(Hz >= 2822400){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_8, CLOCK_22MHZ);
++ delay=355;
++ }
++ else if(Hz >= 2304000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_8, CLOCK_18MHZ);
++ delay=435;
++ }
++ else if(Hz >= 384000){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_64, CLOCK_25MHZ);
++ delay=2605;
++ }
++ else if(Hz >= 352800){
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_64, CLOCK_22MHZ);
++ delay=2834;
++ }
++ else{ /* set to 288 KHz */
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_XON;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ locomospi_setclock(DIV_64, CLOCK_18MHZ);
++ delay=3473;
++ }
++ spidev->clock = Hz;
++}
++
++/* sysfs attributes used for debug *******************************************/
++
++/* SPI registers */
++ssize_t locomospi_showspimd(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPIMD));
++}
++
++ssize_t locomospi_storespimd(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPIMD);
++ return count;
++}
++static DRIVER_ATTR(spimd, S_IWUSR | S_IRUGO, locomospi_showspimd, locomospi_storespimd);
++
++ssize_t locomospi_showspict(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPICT));
++}
++
++ssize_t locomospi_storespict(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPICT);
++ return count;
++}
++static DRIVER_ATTR(spict, S_IWUSR | S_IRUGO, locomospi_showspict, locomospi_storespict);
++
++ssize_t locomospi_showspist(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPIST));
++}
++
++ssize_t locomospi_storespist(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPIST);
++ return count;
++}
++static DRIVER_ATTR(spist, S_IWUSR | S_IRUGO, locomospi_showspist, locomospi_storespist);
++
++ssize_t locomospi_showspitd(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPITD));
++}
++
++ssize_t locomospi_storespitd(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPITD);
++ return count;
++}
++static DRIVER_ATTR(spitd, S_IWUSR | S_IRUGO, locomospi_showspitd, locomospi_storespitd);
++
++ssize_t locomospi_showspird(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPIRD));
++}
++
++ssize_t locomospi_storespird(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPIRD);
++ return count;
++}
++static DRIVER_ATTR(spird, S_IWUSR | S_IRUGO, locomospi_showspird, locomospi_storespird);
++
++ssize_t locomospi_showspits(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPITS));
++}
++
++ssize_t locomospi_storespits(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPITS);
++ return count;
++}
++static DRIVER_ATTR(spits, S_IWUSR | S_IRUGO, locomospi_showspits, locomospi_storespits);
++
++ssize_t locomospi_showspirs(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "0x%x\n", ioread16(spidev->base+LOCOMO_SPIRS));
++}
++
++ssize_t locomospi_storespirs(struct device_driver *drv, const char *buf, size_t count)
++{
++ iowrite16(simple_strtoul(buf, NULL, 16), spidev->base+LOCOMO_SPIRS);
++ return count;
++}
++static DRIVER_ATTR(spirs, S_IWUSR | S_IRUGO, locomospi_showspirs, locomospi_storespirs);
++
++/* MMC Card status */
++
++ssize_t locomospi_showpower(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "%d\n", spidev->card_power);
++}
++
++ssize_t locomospi_storepower(struct device_driver *drv, const char *buf, size_t count)
++{
++ locomospi_power(simple_strtoul(buf, NULL, 10));
++ return count;
++}
++static DRIVER_ATTR(cardpower, S_IWUSR | S_IRUGO, locomospi_showpower, locomospi_storepower);
++
++ssize_t locomospi_detectcard(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "%d\n",(locomo_gpio_read_level(spidev->ldev->dev.parent,LOCOMO_GPIO_CARD_DETECT)>0)?0:1);
++}
++static DRIVER_ATTR(carddetect, S_IRUGO, locomospi_detectcard, NULL);
++
++ssize_t locomospi_writeprotect(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "%d\n",(locomo_gpio_read_level(spidev->ldev->dev.parent,LOCOMO_GPIO_WRITE_PROT)>0)?1:0);
++}
++static DRIVER_ATTR(cardwriteprotect, S_IRUGO, locomospi_writeprotect, NULL);
++
++
++ssize_t locomospi_showclock(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "%d\n", spidev->clock);
++}
++
++ssize_t locomospi_storeclock(struct device_driver *drv, const char *buf, size_t count)
++{
++ locomospi_clock(simple_strtoul(buf, NULL, 10));
++ return count;
++}
++static DRIVER_ATTR(clock, S_IWUSR | S_IRUGO, locomospi_showclock, locomospi_storeclock);
++
++/* debug */
++ssize_t locomospi_showdelay(struct device_driver *drv, char *buf)
++{
++ return sprintf(buf, "%d\n", delay);
++}
++
++ssize_t locomospi_storedelay(struct device_driver *drv, const char *buf, size_t count)
++{
++ delay=simple_strtoul(buf,NULL,10);
++ return count;
++}
++static DRIVER_ATTR(delay, S_IWUSR | S_IRUGO, locomospi_showdelay, locomospi_storedelay);
++
++ssize_t locomospi_reset(struct device_driver *drv, const char *buf, size_t count)
++{
++ int choice = simple_strtoul(buf, NULL, 10);
++ char buff[100];
++ u16 r;
++ switch(choice){
++ case 0: locomospi_reg_release();
++ schedule_timeout(2*HZ);
++ locomospi_reg_open();
++ break;
++ case 1: {
++ char b1[] = "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";
++ char b2[] = "\xff\x40\x00\x00\x00\x00\x95\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";
++ locomospi_setcs(1);
++ txrx(b1,b1,17);
++ locomospi_setcs(0);
++ txrx(b2,b2,18);
++
++ }
++ break;
++ case 2: locomospi_setcs(1);
++ txrx("\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff",buff,18);
++ locomospi_setcs(0);
++ txrx("\xff\x40\x00\x00\x00\x00\x95\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff",buff,17);
++ break;
++ case 3:
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r |= LOCOMO_SPI_LOOPBACK;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ txrx("X",buff,1);
++ txrx("abcdefghijklmnopqrstuvwxyz1234567890",buff,36);
++ txrx("Y",buff,1);
++ udelay(100);
++ txrx("Z",buff,1);
++ schedule_timeout(HZ);
++ txrx("abcdefghijklmnopqrstuvwxyz1234567890",buff,36);
++
++ r = ioread16(spidev->base+LOCOMO_SPIMD);
++ r &= ~LOCOMO_SPI_LOOPBACK;
++ iowrite16(r, spidev->base+LOCOMO_SPIMD);
++ break;
++ default: /* do nothing */;
++ }
++ return count;
++}
++static DRIVER_ATTR(reset, S_IWUSR, NULL, locomospi_reset);
++
++typedef struct locomo_reg_entry {
++ u32 addr;
++ char* name;
++} locomo_reg_entry_t;
++#define LCM (sizeof(locomo_regs)/sizeof(locomo_reg_entry_t))
++static locomo_reg_entry_t locomo_regs[] =
++{
++/* { addr, name, description } */
++ { 0x00, "VER" },
++ { 0x04, "ST" },
++ { 0x08, "C32K" },
++ { 0x0C, "ICR" },
++ { 0x10, "MCSX0" },
++ { 0x14, "MCSX1" },
++ { 0x18, "MCSX2" },
++ { 0x1C, "MCSX3" },
++ { 0x20, "ASD" },
++ { 0x28, "HSD" },
++ { 0x2C, "HSC" },
++ { 0x30, "TADC" },
++ { 0x38, "TC" },
++ { 0x3C, "CPSD" },
++ { 0x40, "KIB" },
++ { 0x44, "KSC" },
++ { 0x48, "KCMD" },
++ { 0x4C, "KIC" },
++ { 0x54, "ACC" },
++ { 0x60, "SPIMD" },
++ { 0x64, "SPICT" },
++ { 0x68, "SPIST" },
++ { 0x70, "SPIIS" },
++ { 0x74, "SPIWE" },
++ { 0x78, "SPIIE" },
++ { 0x7C, "SPIIR" },
++ { 0x80, "SPITD" },
++ { 0x84, "SPIRD" },
++ { 0x88, "SPITS" },
++ { 0x8C, "SPIRS" },
++ { 0x90, "GPD" },
++ { 0x94, "GPE" },
++ { 0x98, "GPL" },
++ { 0x9C, "GPO" },
++ { 0xa0, "GRIE" },
++ { 0xa4, "GFIE" },
++ { 0xa8, "GIS" },
++ { 0xac, "GWE" },
++ { 0xb0, "GIE" },
++ { 0xb4, "GIR" },
++ { 0xc8, "ALC" },
++ { 0xcc, "ALR" },
++ { 0xd0, "PAIF" },
++ { 0xd8, "LTC" },
++ { 0xdc, "LTINT" },
++ { 0xe0, "DAC" },
++ { 0xe8, "LPT0" },
++ { 0xec, "LPT1" },
++ { 0xfc, "TCR" },
++};
++
++static ssize_t lcm_show(struct device *dev, struct device_attribute *attr, char *buf)
++{
++ int base = spidev->base - LOCOMO_SPI;
++ char b[4000]="";
++ char c[30];
++ int i;
++ for(i=0; i<LCM; i++){
++ sprintf(c,"%s:\t\t 0x%x\n",locomo_regs[i].name, ioread16(base + locomo_regs[i].addr));
++ strcat(b,c);
++ }
++ return sprintf(buf,"%s",b);
++}
++
++static DRIVER_ATTR(regs, 0444, lcm_show, NULL);
++
++
++/* SPI functions *************************************************************/
++
++static void locomospi_do_transfer(struct work_struct *wrk)
++{
++ struct list_head *mptr, *tptr, *mptr2;
++ struct spi_transfer *entry;
++ struct spi_message *msg;
++
++ list_for_each_safe(mptr, mptr2, &spidev->message_list){
++ msg = list_entry(mptr, struct spi_message, queue);
++
++ msg->status = 0;
++ msg->actual_length = 0;
++ list_for_each(tptr, &msg->transfers){
++ entry = list_entry(tptr, struct spi_transfer, transfer_list);
++ if(entry->tx_buf && entry->rx_buf){ //duplex
++ txrx((char*) entry->tx_buf, (char*) entry->rx_buf, entry->len);
++ msg->actual_length += entry->len;
++ } else if(entry->tx_buf && !entry->rx_buf){ //write
++ tx((char*) entry->tx_buf, entry->len);
++ msg->actual_length += entry->len;
++ } else if(!entry->tx_buf && entry->rx_buf){ //read
++ rx((char*) entry->rx_buf, entry->len);
++ msg->actual_length += entry->len;
++ } else if(!entry->tx_buf && !entry->rx_buf){ //error
++ dev_err(&spidev->sdev->dev, "do_transfer: no buffers allocated\n");
++ msg->status = -EFAULT;
++ }
++ }
++ spin_lock(&spidev->message_lock);
++ list_del(mptr);
++ spin_unlock(&spidev->message_lock);
++ msg->complete(msg->context);
++ }
++}
++
++static int locomospi_setup(struct spi_device *spi)
++{
++ if((spi->mode & SPI_CS_HIGH) != (spidev->spimode & SPI_CS_HIGH))
++ locomospi_setcs(spi->mode & SPI_CS_HIGH ? 1 : 0 );
++ if(spidev->clock != spi->max_speed_hz){
++ locomospi_clock(spi->max_speed_hz);
++ }
++ spidev->spimode = spi->mode;
++
++ return 0;
++}
++
++static int locomospi_transfer(struct spi_device *spi, struct spi_message *msg)
++{
++
++ spin_lock(&spidev->message_lock);
++ list_add_tail(&msg->queue, &spidev->message_list);
++ spin_unlock(&spidev->message_lock);
++ schedule_work(&transfer_wq);
++ return 0;
++}
++
++static struct locomo_driver locomo_spi_driver = {
++ .drv = {
++ .name = "locomo-spi",
++ },
++ .devid = LOCOMO_DEVID_SPI,
++ .probe = locomospi_probe,
++ .remove = locomospi_remove,
++#ifdef CONFIG_PM
++ .suspend = locomospi_suspend,
++ .resume = locomospi_resume,
++#endif
++};
++
++static struct spi_board_info board = {
++ .modalias = "mmc_spi",
++ .platform_data = (void*) &colliemmc,
++ .controller_data= NULL,
++ .irq = 0,
++ .max_speed_hz = 25000000,
++ .bus_num = 0,
++ .chip_select = 0,
++ .mode = 0,
++};
++
++#ifdef CONFIG_PM
++static int locomospi_suspend(struct locomo_dev *dev, pm_message_t state)
++{
++ disable_irq(IRQ_LOCOMO_CARDDETECT);
++ return 0;
++}
++
++static int locomospi_resume(struct locomo_dev *dev)
++{
++ enable_irq(IRQ_LOCOMO_CARDDETECT);
++ return 0;
++}
++#endif
++
++static int locomospi_probe(struct locomo_dev *dev)
++{
++ int result=0;
++ printk(KERN_DEBUG "Collie MMC over SPI Driver\n");
++ spidev=kmalloc(sizeof(struct locomospi_dev),GFP_KERNEL);
++ if(!spidev){
++ return -ENOMEM;
++ }
++ spidev->ldev = dev;
++ spidev->card_power = 1;
++ spidev->spimode = 0;
++
++ if(!request_mem_region((unsigned long) dev->mapbase, dev->length, LOCOMO_DRIVER_NAME(dev))) {
++ dev_err(&dev->dev, " Can't aquire access to io memory\n");
++ return -EBUSY;
++ }
++ spidev->base=(unsigned long) dev->mapbase;
++ locomospi_reg_open();
++
++ locomo_gpio_set_dir(dev->dev.parent, LOCOMO_GPIO_CARD_POWER, 0);
++ locomo_gpio_set_dir(dev->dev.parent, LOCOMO_GPIO_CARD_DETECT, 1);
++ locomo_gpio_set_dir(dev->dev.parent, LOCOMO_GPIO_WRITE_PROT, 1);
++
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_cardpower);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_carddetect);
++ if(result){
++ dev_err(&dev->dev,"error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_cardwriteprotect);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spimd);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spict);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spist);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spitd);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spird);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spits);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_spirs);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_clock);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_delay);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_reset);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ result=driver_create_file(&locomo_spi_driver.drv, &driver_attr_regs);
++ if(result){
++ dev_err(&dev->dev, "error creating driver attribute\n");
++ goto region;
++ }
++ INIT_WORK(&transfer_wq, locomospi_do_transfer);
++ INIT_LIST_HEAD(&spidev->message_list);
++ spin_lock_init(&spidev->message_lock);
++ init_waitqueue_head(&spidev->waitqueue);
++ spidev->master=spi_alloc_master(&dev->dev,0);
++ if(!spidev->master){
++ result=-ENOMEM;
++ goto region;
++ }
++ spidev->master->bus_num = 0;
++ spidev->master->num_chipselect = 1;
++ spidev->master->setup = locomospi_setup;
++ spidev->master->transfer = locomospi_transfer;
++ spidev->sdev = spi_new_device(spidev->master, &board);
++ if(!spidev->sdev){
++ dev_err(&dev->dev, "failed to register spi device\n");
++ result = -EINVAL;
++ goto master;
++ }
++/* result=request_irq(IRQ_LOCOMO_SPI_RFR, locomospi_testisr, IRQF_SHARED, "locomo-spi", (void*) spidev);
++ if(result) {
++ dev_err(&dev->dev, "Could not get IRQ: RFR\n");
++ goto regdev;
++ }
++ //disable_irq(IRQ_LOCOMO_SPI_RFR);
++*//* result=request_irq(IRQ_LOCOMO_SPI_RFW, locomospi_testisr, IRQF_SHARED, "locomo-spi", (void*) spidev);
++ if(result) {
++ dev_err(&dev->dev, "Could not get IRQ: RFW\n");
++ goto irq1;
++ }
++ //disable_irq(IRQ_LOCOMO_SPI_RFW);
++*//* result=request_irq(IRQ_LOCOMO_SPI_REND, locomospi_testisr, IRQF_SHARED, "locomo-spi", (void*) spidev);
++ if(result) {
++ dev_err(&dev->dev, "Could not get IRQ: REND\n");
++ goto irq2;
++ }
++*//* result=request_irq(IRQ_LOCOMO_SPI_TEND, locomospi_testisr, IRQF_SHARED, "locomo-spi", (void*) spidev);
++ if(result) {
++ dev_err(&dev->dev, "Could not get IRQ: TEND\n");
++ goto irq3;
++ }
++ //disable_irq(IRQ_LOCOMO_SPI_TEND);
++*/ spidev->workqueue = create_singlethread_workqueue("locomo-spi");
++ if(!spidev->workqueue){
++ dev_err(&dev->dev, "failed to create workqueue\n");
++ goto irq4;
++ }
++ result=spi_register_master(spidev->master);
++ if(result){
++ dev_err(&dev->dev, "failed to register spimaster\n");
++ goto wq;
++ }
++ return 0;
++wq:
++ destroy_workqueue(spidev->workqueue);
++irq4:
++// free_irq(IRQ_LOCOMO_SPI_TEND, (void*) spidev);
++irq3:
++// free_irq(IRQ_LOCOMO_SPI_REND, (void*) spidev);
++irq2:
++// free_irq(IRQ_LOCOMO_SPI_RFW, (void*) spidev);
++irq1:
++// free_irq(IRQ_LOCOMO_SPI_RFR, (void*) spidev);
++regdev:
++ spi_unregister_device(spidev->sdev);
++master:
++ spi_master_put(spidev->master);
++region:
++ release_mem_region((unsigned long) dev->mapbase, dev->length);
++ kfree(spidev);
++ return result;
++
++}
++
++static int locomospi_remove(struct locomo_dev *dev)
++{
++ spi_unregister_device(spidev->sdev);
++ spi_unregister_master(spidev->master);
++ destroy_workqueue(spidev->workqueue);
++ locomospi_reg_release();
++// free_irq(IRQ_LOCOMO_SPI_TEND, (void*) spidev);
++// free_irq(IRQ_LOCOMO_SPI_REND, (void*) spidev);
++// free_irq(IRQ_LOCOMO_SPI_RFW, (void*) spidev);
++// free_irq(IRQ_LOCOMO_SPI_RFR, (void*) spidev);
++ spi_master_put(spidev->master);
++ release_mem_region((unsigned long) dev->mapbase, dev->length);
++ kfree(spidev);
++ return 0;
++}
++
++
++
++static int __init locomospi_init(void)
++{
++ int ret = locomo_driver_register(&locomo_spi_driver);
++ if (ret)
++ return ret;
++
++
++ return 0;
++}
++
++static void __exit locomospi_exit(void)
++{
++ locomo_driver_unregister(&locomo_spi_driver);
++}
++
++module_init(locomospi_init);
++module_exit(locomospi_exit);
++
++MODULE_AUTHOR("Thomas Kunze thommy@tabao.de");
++MODULE_DESCRIPTION("Collie mmc driver");
++MODULE_LICENSE("GPL");
+diff --git a/drivers/spi/locomo_spi.h b/drivers/spi/locomo_spi.h
+new file mode 100644
+index 0000000..7e1c0ce
+--- /dev/null
++++ b/drivers/spi/locomo_spi.h
+@@ -0,0 +1,75 @@
++#include <asm/hardware/locomo.h>
++#ifndef __LOCOMO_SPI_H__
++#define __LOCOMO_SPI_H__
++
++/* locomo-spi status register LOCOMO_SPIST */
++#define LOCOMO_SPI_TEND (1 << 3) /* Transfer end bit */
++#define LOCOMO_SPI_REND (1 << 2) /* Receive end bit */
++#define LOCOMO_SPI_RFW (1 << 1) /* write buffer bit */
++#define LOCOMO_SPI_RFR (1) /* read buffer bit */
++
++/* locomo-spi mode register LOCOMO_SPIMD */
++#define LOCOMO_SPI_LOOPBACK (1 << 15) /* loopback tx to rx */
++#define LOCOMO_SPI_MSB1ST (1 << 14) /* send MSB first */
++#define LOCOMO_SPI_DOSTAT (1 << 13) /* transmit line is idle high */
++#define LOCOMO_SPI_TCPOL (1 << 11) /* transmit CPOL (maybe affects CPHA too) */
++#define LOCOMO_SPI_RCPOL (1 << 10) /* receive CPOL (maybe affects CPHA too) */
++#define LOCOMO_SPI_TDINV (1 << 9) /* invert transmit line */
++#define LOCOMO_SPI_RDINV (1 << 8) /* invert receive line */
++#define LOCOMO_SPI_XON (1 << 7) /* enable spi controller clock */
++#define LOCOMO_SPI_XEN (1 << 6) /* clock bit write enable xon must be off, wait 300 us before xon->1 */
++#define LOCOMO_SPI_XSEL 0x0018 /* clock select */
++#define CLOCK_18MHZ 0 /* 18,432 MHz clock */
++#define CLOCK_22MHZ 1 /* 22,5792 MHz clock */
++#define CLOCK_25MHZ 2 /* 24,576 MHz clock */
++#define LOCOMO_SPI_CLKSEL 0x7
++#define DIV_1 0 /* don't divide clock */
++#define DIV_2 1 /* divide clock by two */
++#define DIV_4 2 /* divide clock by four */
++#define DIV_8 3 /* divide clock by eight*/
++#define DIV_64 4 /* divide clock by 64 */
++
++/* locomo-spi control register LOCOMO_SPICT */
++#define LOCOMO_SPI_CRC16_7_B (1 << 15) /* 0: crc16 1: crc7 */
++#define LOCOMO_SPI_CRCRX_TX_B (1 << 14)
++#define LOCOMO_SPI_CRCRESET_B (1 << 13)
++#define LOCOMO_SPI_CEN (1 << 7) /* ?? enable */
++#define LOCOMO_SPI_CS (1 << 6) /* chip select */
++#define LOCOMO_SPI_UNIT16 (1 << 5) /* 0: 8 bit units, 1: 16 bit unit */
++#define LOCOMO_SPI_ALIGNEN (1 << 2) /* align transfer enable */
++#define LOCOMO_SPI_RXWEN (1 << 1) /* continous receive */
++#define LOCOMO_SPI_RXUEN (1 << 0) /* aligned receive */
++
++#define IRQ_LOCOMO_CARDDETECT IRQ_LOCOMO_GPIO13
++
++
++struct locomospi_dev {
++ struct locomo_dev *ldev;
++ struct spi_master *master;
++ struct spi_device *sdev;
++ int card_power;
++ int clock_base;
++ int clock_div;
++ int clock;
++ unsigned long base;
++ u8 spimode;
++ wait_queue_head_t waitqueue;
++ struct workqueue_struct *workqueue;
++ struct list_head message_list;
++ spinlock_t message_lock;
++};
++
++
++static irqreturn_t locomospi_cardisr(int, void*);
++static int locomospi_probe(struct locomo_dev*);
++static int locomospi_remove(struct locomo_dev*);
++static int locomospi_carddetect(void);
++static void locomospi_reg_open(void);
++static void locomospi_reg_release(void);
++static int tx(const char*, int);
++static int rx(char *, int);
++static void locomospi_power(int on);
++static int locomospi_suspend(struct locomo_dev *dev, pm_message_t state);
++static int locomospi_resume(struct locomo_dev *dev);
++static void locomospi_setcs(int high);
++#endif
+--
+1.6.0.4
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 05:52:28 +0000