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yaml
---
r: 8774
b: refs/heads/master
c: 50a5de4
h: refs/heads/master
v: v3
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Richard Purdie authored and Linus Torvalds committed Sep 13, 2005
1 parent 125eec4 commit 8de4603
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Showing 6 changed files with 80 additions and 40 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 610827dee82731c7be5a135d750d194ac56881a9
refs/heads/master: 50a5de44821352354a3ee804e2c7cbfee5a81c06
13 changes: 13 additions & 0 deletions trunk/arch/arm/mach-pxa/corgi.c
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Expand Up @@ -41,6 +41,7 @@
#include <asm/hardware/scoop.h>

#include "generic.h"
#include "sharpsl.h"


/*
Expand Down Expand Up @@ -94,6 +95,16 @@ struct platform_device corgissp_device = {
.id = -1,
};

struct corgissp_machinfo corgi_ssp_machinfo = {
.port = 1,
.cs_lcdcon = CORGI_GPIO_LCDCON_CS,
.cs_ads7846 = CORGI_GPIO_ADS7846_CS,
.cs_max1111 = CORGI_GPIO_MAX1111_CS,
.clk_lcdcon = 76,
.clk_ads7846 = 2,
.clk_max1111 = 8,
};


/*
* Corgi Backlight Device
Expand Down Expand Up @@ -225,6 +236,8 @@ static struct platform_device *devices[] __initdata = {

static void __init corgi_init(void)
{
corgi_ssp_set_machinfo(&corgi_ssp_machinfo);

pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
pxa_set_udc_info(&udc_info);
pxa_set_mci_info(&corgi_mci_platform_data);
Expand Down
66 changes: 39 additions & 27 deletions trunk/arch/arm/mach-pxa/corgi_ssp.c
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/*
* SSP control code for Sharp Corgi devices
*
* Copyright (c) 2004 Richard Purdie
* Copyright (c) 2004-2005 Richard Purdie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
Expand All @@ -17,14 +17,16 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>

#include <asm/arch/ssp.h>
#include <asm/arch/corgi.h>
#include <asm/arch/pxa-regs.h>
#include "sharpsl.h"

static DEFINE_SPINLOCK(corgi_ssp_lock);
static struct ssp_dev corgi_ssp_dev;
static struct ssp_state corgi_ssp_state;
static struct corgissp_machinfo *ssp_machinfo;

/*
* There are three devices connected to the SSP interface:
Expand All @@ -48,12 +50,12 @@ unsigned long corgi_ssp_ads7846_putget(ulong data)
unsigned long ret,flag;

spin_lock_irqsave(&corgi_ssp_lock, flag);
GPCR0 = GPIO_bit(CORGI_GPIO_ADS7846_CS);
GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);

ssp_write_word(&corgi_ssp_dev,data);
ret = ssp_read_word(&corgi_ssp_dev);

GPSR0 = GPIO_bit(CORGI_GPIO_ADS7846_CS);
GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
spin_unlock_irqrestore(&corgi_ssp_lock, flag);

return ret;
Expand All @@ -66,12 +68,12 @@ unsigned long corgi_ssp_ads7846_putget(ulong data)
void corgi_ssp_ads7846_lock(void)
{
spin_lock(&corgi_ssp_lock);
GPCR0 = GPIO_bit(CORGI_GPIO_ADS7846_CS);
GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
}

void corgi_ssp_ads7846_unlock(void)
{
GPSR0 = GPIO_bit(CORGI_GPIO_ADS7846_CS);
GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
spin_unlock(&corgi_ssp_lock);
}

Expand All @@ -97,23 +99,27 @@ EXPORT_SYMBOL(corgi_ssp_ads7846_get);
*/
unsigned long corgi_ssp_dac_put(ulong data)
{
unsigned long flag;
unsigned long flag, sscr1 = SSCR1_SPH;

spin_lock_irqsave(&corgi_ssp_lock, flag);
GPCR0 = GPIO_bit(CORGI_GPIO_LCDCON_CS);

if (machine_is_spitz() || machine_is_akita() || machine_is_borzoi())
sscr1 = 0;

ssp_disable(&corgi_ssp_dev);
ssp_config(&corgi_ssp_dev, (SSCR0_Motorola | (SSCR0_DSS & 0x07 )), SSCR1_SPH, 0, SSCR0_SerClkDiv(76));
ssp_config(&corgi_ssp_dev, (SSCR0_Motorola | (SSCR0_DSS & 0x07 )), sscr1, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_lcdcon));
ssp_enable(&corgi_ssp_dev);

GPCR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);
ssp_write_word(&corgi_ssp_dev,data);
/* Read null data back from device to prevent SSP overflow */
ssp_read_word(&corgi_ssp_dev);
GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon);

ssp_disable(&corgi_ssp_dev);
ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(2));
ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_ads7846));
ssp_enable(&corgi_ssp_dev);
GPSR0 = GPIO_bit(CORGI_GPIO_LCDCON_CS);

spin_unlock_irqrestore(&corgi_ssp_lock, flag);

return 0;
Expand Down Expand Up @@ -141,9 +147,9 @@ int corgi_ssp_max1111_get(ulong data)
int voltage,voltage1,voltage2;

spin_lock_irqsave(&corgi_ssp_lock, flag);
GPCR0 = GPIO_bit(CORGI_GPIO_MAX1111_CS);
GPCR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
ssp_disable(&corgi_ssp_dev);
ssp_config(&corgi_ssp_dev, (SSCR0_Motorola | (SSCR0_DSS & 0x07 )), 0, 0, SSCR0_SerClkDiv(8));
ssp_config(&corgi_ssp_dev, (SSCR0_Motorola | (SSCR0_DSS & 0x07 )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_max1111));
ssp_enable(&corgi_ssp_dev);

udelay(1);
Expand All @@ -161,9 +167,9 @@ int corgi_ssp_max1111_get(ulong data)
voltage2=ssp_read_word(&corgi_ssp_dev);

ssp_disable(&corgi_ssp_dev);
ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(2));
ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_ads7846));
ssp_enable(&corgi_ssp_dev);
GPSR0 = GPIO_bit(CORGI_GPIO_MAX1111_CS);
GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
spin_unlock_irqrestore(&corgi_ssp_lock, flag);

if (voltage1 & 0xc0 || voltage2 & 0x3f)
Expand All @@ -179,25 +185,31 @@ EXPORT_SYMBOL(corgi_ssp_max1111_get);
/*
* Support Routines
*/
int __init corgi_ssp_probe(struct device *dev)

void __init corgi_ssp_set_machinfo(struct corgissp_machinfo *machinfo)
{
ssp_machinfo = machinfo;
}

static int __init corgi_ssp_probe(struct device *dev)
{
int ret;

/* Chip Select - Disable All */
GPDR0 |= GPIO_bit(CORGI_GPIO_LCDCON_CS); /* output */
GPSR0 = GPIO_bit(CORGI_GPIO_LCDCON_CS); /* High - Disable LCD Control/Timing Gen */
GPDR0 |= GPIO_bit(CORGI_GPIO_MAX1111_CS); /* output */
GPSR0 = GPIO_bit(CORGI_GPIO_MAX1111_CS); /* High - Disable MAX1111*/
GPDR0 |= GPIO_bit(CORGI_GPIO_ADS7846_CS); /* output */
GPSR0 = GPIO_bit(CORGI_GPIO_ADS7846_CS); /* High - Disable ADS7846*/
GPDR(ssp_machinfo->cs_lcdcon) |= GPIO_bit(ssp_machinfo->cs_lcdcon); /* output */
GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon); /* High - Disable LCD Control/Timing Gen */
GPDR(ssp_machinfo->cs_max1111) |= GPIO_bit(ssp_machinfo->cs_max1111); /* output */
GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
GPDR(ssp_machinfo->cs_ads7846) |= GPIO_bit(ssp_machinfo->cs_ads7846); /* output */
GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/

ret=ssp_init(&corgi_ssp_dev,1);
ret = ssp_init(&corgi_ssp_dev,ssp_machinfo->port);

if (ret)
printk(KERN_ERR "Unable to register SSP handler!\n");
else {
ssp_disable(&corgi_ssp_dev);
ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(2));
ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_ads7846));
ssp_enable(&corgi_ssp_dev);
}

Expand All @@ -222,9 +234,9 @@ static int corgi_ssp_suspend(struct device *dev, pm_message_t state, u32 level)
static int corgi_ssp_resume(struct device *dev, u32 level)
{
if (level == RESUME_POWER_ON) {
GPSR0 = GPIO_bit(CORGI_GPIO_LCDCON_CS); /* High - Disable LCD Control/Timing Gen */
GPSR0 = GPIO_bit(CORGI_GPIO_MAX1111_CS); /* High - Disable MAX1111*/
GPSR0 = GPIO_bit(CORGI_GPIO_ADS7846_CS); /* High - Disable ADS7846*/
GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon); /* High - Disable LCD Control/Timing Gen */
GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/
ssp_restore_state(&corgi_ssp_dev,&corgi_ssp_state);
ssp_enable(&corgi_ssp_dev);
}
Expand Down
15 changes: 15 additions & 0 deletions trunk/arch/arm/mach-pxa/sharpsl.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
/*
* SharpSL SSP Driver
*/

struct corgissp_machinfo {
int port;
int cs_lcdcon;
int cs_ads7846;
int cs_max1111;
int clk_lcdcon;
int clk_ads7846;
int clk_max1111;
};

void corgi_ssp_set_machinfo(struct corgissp_machinfo *machinfo);
12 changes: 0 additions & 12 deletions trunk/include/asm-arm/arch-pxa/corgi.h
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Original file line number Diff line number Diff line change
Expand Up @@ -106,17 +106,5 @@ extern struct platform_device corgiscoop_device;
extern struct platform_device corgissp_device;
extern struct platform_device corgifb_device;

/*
* External Functions
*/
extern unsigned long corgi_ssp_ads7846_putget(unsigned long);
extern unsigned long corgi_ssp_ads7846_get(void);
extern void corgi_ssp_ads7846_put(unsigned long data);
extern void corgi_ssp_ads7846_lock(void);
extern void corgi_ssp_ads7846_unlock(void);
extern void corgi_ssp_lcdtg_send (unsigned char adrs, unsigned char data);
extern void corgi_ssp_blduty_set(int duty);
extern int corgi_ssp_max1111_get(unsigned long data);

#endif /* __ASM_ARCH_CORGI_H */

12 changes: 12 additions & 0 deletions trunk/include/asm-arm/arch-pxa/sharpsl.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
/*
* SharpSL SSP Driver
*/

unsigned long corgi_ssp_ads7846_putget(unsigned long);
unsigned long corgi_ssp_ads7846_get(void);
void corgi_ssp_ads7846_put(unsigned long data);
void corgi_ssp_ads7846_lock(void);
void corgi_ssp_ads7846_unlock(void);
void corgi_ssp_lcdtg_send (unsigned char adrs, unsigned char data);
void corgi_ssp_blduty_set(int duty);
int corgi_ssp_max1111_get(unsigned long data);

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