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-rw-r--r--arch/arm/mach-pxa/corgi_ssp.c276
1 files changed, 0 insertions, 276 deletions
diff --git a/arch/arm/mach-pxa/corgi_ssp.c b/arch/arm/mach-pxa/corgi_ssp.c
deleted file mode 100644
index eccc45d..0000000
--- a/arch/arm/mach-pxa/corgi_ssp.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/*
- * SSP control code for Sharp Corgi devices
- *
- * 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
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <asm/hardware.h>
-#include <asm/mach-types.h>
-
-#include <asm/arch/ssp.h>
-#include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-gpio.h>
-#include <asm/arch/regs-ssp.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:
- * 1. A touchscreen controller (TI ADS7846 compatible)
- * 2. An LCD controller (with some Backlight functionality)
- * 3. A battery monitoring IC (Maxim MAX1111)
- *
- * Each device uses a different speed/mode of communication.
- *
- * The touchscreen is very sensitive and the most frequently used
- * so the port is left configured for this.
- *
- * Devices are selected using Chip Selects on GPIOs.
- */
-
-/*
- * ADS7846 Routines
- */
-unsigned long corgi_ssp_ads7846_putget(ulong data)
-{
- unsigned long flag;
- u32 ret = 0;
-
- spin_lock_irqsave(&corgi_ssp_lock, flag);
- if (ssp_machinfo->cs_ads7846 >= 0)
- GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
-
- ssp_write_word(&corgi_ssp_dev,data);
- ssp_read_word(&corgi_ssp_dev, &ret);
-
- if (ssp_machinfo->cs_ads7846 >= 0)
- GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
- spin_unlock_irqrestore(&corgi_ssp_lock, flag);
-
- return ret;
-}
-
-/*
- * NOTE: These functions should always be called in interrupt context
- * and use the _lock and _unlock functions. They are very time sensitive.
- */
-void corgi_ssp_ads7846_lock(void)
-{
- spin_lock(&corgi_ssp_lock);
- if (ssp_machinfo->cs_ads7846 >= 0)
- GPCR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
-}
-
-void corgi_ssp_ads7846_unlock(void)
-{
- if (ssp_machinfo->cs_ads7846 >= 0)
- GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846);
- spin_unlock(&corgi_ssp_lock);
-}
-
-void corgi_ssp_ads7846_put(ulong data)
-{
- ssp_write_word(&corgi_ssp_dev,data);
-}
-
-unsigned long corgi_ssp_ads7846_get(void)
-{
- u32 ret = 0;
- ssp_read_word(&corgi_ssp_dev, &ret);
- return ret;
-}
-
-EXPORT_SYMBOL(corgi_ssp_ads7846_putget);
-EXPORT_SYMBOL(corgi_ssp_ads7846_lock);
-EXPORT_SYMBOL(corgi_ssp_ads7846_unlock);
-EXPORT_SYMBOL(corgi_ssp_ads7846_put);
-EXPORT_SYMBOL(corgi_ssp_ads7846_get);
-
-
-/*
- * LCD/Backlight Routines
- */
-unsigned long corgi_ssp_dac_put(ulong data)
-{
- unsigned long flag, sscr1 = SSCR1_SPH;
- u32 tmp;
-
- spin_lock_irqsave(&corgi_ssp_lock, flag);
-
- 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, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_lcdcon));
- ssp_enable(&corgi_ssp_dev);
-
- if (ssp_machinfo->cs_lcdcon >= 0)
- 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, &tmp);
- if (ssp_machinfo->cs_lcdcon >= 0)
- 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(ssp_machinfo->clk_ads7846));
- ssp_enable(&corgi_ssp_dev);
-
- spin_unlock_irqrestore(&corgi_ssp_lock, flag);
-
- return 0;
-}
-
-void corgi_ssp_lcdtg_send(u8 adrs, u8 data)
-{
- corgi_ssp_dac_put(((adrs & 0x07) << 5) | (data & 0x1f));
-}
-
-void corgi_ssp_blduty_set(int duty)
-{
- corgi_ssp_lcdtg_send(0x02,duty);
-}
-
-EXPORT_SYMBOL(corgi_ssp_lcdtg_send);
-EXPORT_SYMBOL(corgi_ssp_blduty_set);
-
-/*
- * Max1111 Routines
- */
-int corgi_ssp_max1111_get(ulong data)
-{
- unsigned long flag;
- long voltage = 0, voltage1 = 0, voltage2 = 0;
-
- spin_lock_irqsave(&corgi_ssp_lock, flag);
- if (ssp_machinfo->cs_max1111 >= 0)
- 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(ssp_machinfo->clk_max1111));
- ssp_enable(&corgi_ssp_dev);
-
- udelay(1);
-
- /* TB1/RB1 */
- ssp_write_word(&corgi_ssp_dev,data);
- ssp_read_word(&corgi_ssp_dev, (u32*)&voltage1); /* null read */
-
- /* TB12/RB2 */
- ssp_write_word(&corgi_ssp_dev,0);
- ssp_read_word(&corgi_ssp_dev, (u32*)&voltage1);
-
- /* TB13/RB3*/
- ssp_write_word(&corgi_ssp_dev,0);
- ssp_read_word(&corgi_ssp_dev, (u32*)&voltage2);
-
- ssp_disable(&corgi_ssp_dev);
- ssp_config(&corgi_ssp_dev, (SSCR0_National | (SSCR0_DSS & 0x0b )), 0, 0, SSCR0_SerClkDiv(ssp_machinfo->clk_ads7846));
- ssp_enable(&corgi_ssp_dev);
- if (ssp_machinfo->cs_max1111 >= 0)
- GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111);
- spin_unlock_irqrestore(&corgi_ssp_lock, flag);
-
- if (voltage1 & 0xc0 || voltage2 & 0x3f)
- voltage = -1;
- else
- voltage = ((voltage1 << 2) & 0xfc) | ((voltage2 >> 6) & 0x03);
-
- return voltage;
-}
-
-EXPORT_SYMBOL(corgi_ssp_max1111_get);
-
-/*
- * Support Routines
- */
-
-void __init corgi_ssp_set_machinfo(struct corgissp_machinfo *machinfo)
-{
- ssp_machinfo = machinfo;
-}
-
-static int __init corgi_ssp_probe(struct platform_device *dev)
-{
- int ret;
-
- /* Chip Select - Disable All */
- if (ssp_machinfo->cs_lcdcon >= 0)
- pxa_gpio_mode(ssp_machinfo->cs_lcdcon | GPIO_OUT | GPIO_DFLT_HIGH);
- if (ssp_machinfo->cs_max1111 >= 0)
- pxa_gpio_mode(ssp_machinfo->cs_max1111 | GPIO_OUT | GPIO_DFLT_HIGH);
- if (ssp_machinfo->cs_ads7846 >= 0)
- pxa_gpio_mode(ssp_machinfo->cs_ads7846 | GPIO_OUT | GPIO_DFLT_HIGH);
-
- ret = ssp_init(&corgi_ssp_dev, ssp_machinfo->port, 0);
-
- 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(ssp_machinfo->clk_ads7846));
- ssp_enable(&corgi_ssp_dev);
- }
-
- return ret;
-}
-
-static int corgi_ssp_remove(struct platform_device *dev)
-{
- ssp_exit(&corgi_ssp_dev);
- return 0;
-}
-
-static int corgi_ssp_suspend(struct platform_device *dev, pm_message_t state)
-{
- ssp_flush(&corgi_ssp_dev);
- ssp_save_state(&corgi_ssp_dev,&corgi_ssp_state);
-
- return 0;
-}
-
-static int corgi_ssp_resume(struct platform_device *dev)
-{
- if (ssp_machinfo->cs_lcdcon >= 0)
- GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon); /* High - Disable LCD Control/Timing Gen */
- if (ssp_machinfo->cs_max1111 >= 0)
- GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/
- if (ssp_machinfo->cs_ads7846 >= 0)
- 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);
-
- return 0;
-}
-
-static struct platform_driver corgissp_driver = {
- .probe = corgi_ssp_probe,
- .remove = corgi_ssp_remove,
- .suspend = corgi_ssp_suspend,
- .resume = corgi_ssp_resume,
- .driver = {
- .name = "corgi-ssp",
- },
-};
-
-int __init corgi_ssp_init(void)
-{
- return platform_driver_register(&corgissp_driver);
-}
-
-arch_initcall(corgi_ssp_init);
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