Commit 513b6e1a authored by Richard Purdie's avatar Richard Purdie Committed by Linus Torvalds
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[PATCH] SharpSL: Abstract c7x0 specifics from Corgi Touchscreen driver



Separate out the Sharp Zaurus c7x0 series specific code from the Corgi
Touchscreen driver.  Use the new functions in corgi_lcd.c via sharpsl.h for
hsync handling and pass the IRQ as a platform device resource.  Move a
function prototype into the w100fb header file where it belongs.

This enables the driver to be used by the Zaurus cxx00 series.
Signed-Off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 9fc7896b
......@@ -130,12 +130,29 @@ static struct platform_device corgikbd_device = {
/*
* Corgi Touch Screen Device
*/
static struct resource corgits_resources[] = {
[0] = {
.start = CORGI_IRQ_GPIO_TP_INT,
.end = CORGI_IRQ_GPIO_TP_INT,
.flags = IORESOURCE_IRQ,
},
};
static struct corgits_machinfo corgi_ts_machinfo = {
.get_hsync_len = corgi_get_hsync_len,
.put_hsync = corgi_put_hsync,
.wait_hsync = corgi_wait_hsync,
};
static struct platform_device corgits_device = {
.name = "corgi-ts",
.dev = {
.parent = &corgissp_device.dev,
.platform_data = &corgi_ts_machinfo,
},
.id = -1,
.num_resources = ARRAY_SIZE(corgits_resources),
.resource = corgits_resources,
};
......@@ -239,6 +256,7 @@ static void __init corgi_init(void)
corgi_ssp_set_machinfo(&corgi_ssp_machinfo);
pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
pxa_set_udc_info(&udc_info);
pxa_set_mci_info(&corgi_mci_platform_data);
......
......@@ -24,17 +24,17 @@ config TOUCHSCREEN_BITSY
module will be called h3600_ts_input.
config TOUCHSCREEN_CORGI
tristate "Corgi touchscreen (for Sharp SL-C7xx)"
tristate "SharpSL (Corgi and Spitz series) touchscreen driver"
depends on PXA_SHARPSL
default y
help
Say Y here to enable the driver for the touchscreen on the
Sharp SL-C7xx series of PDAs.
Sharp SL-C7xx and SL-Cxx00 series of PDAs.
If unsure, say N.
To compile this driver as a module, choose M here: the
module will be called ads7846_ts.
module will be called corgi_ts.
config TOUCHSCREEN_GUNZE
tristate "Gunze AHL-51S touchscreen"
......
/*
* Touchscreen driver for Sharp Corgi models (SL-C7xx)
* Touchscreen driver for Sharp SL-C7xx and SL-Cxx00 models
*
* Copyright (c) 2004-2005 Richard Purdie
*
......@@ -19,7 +19,7 @@
#include <linux/slab.h>
#include <asm/irq.h>
#include <asm/arch/corgi.h>
#include <asm/arch/sharpsl.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pxa-regs.h>
......@@ -47,15 +47,20 @@ struct corgi_ts {
struct ts_event tc;
int pendown;
int power_mode;
int irq_gpio;
struct corgits_machinfo *machinfo;
};
#define STATUS_HSYNC (GPLR(CORGI_GPIO_HSYNC) & GPIO_bit(CORGI_GPIO_HSYNC))
#define SyncHS() while((STATUS_HSYNC) == 0); while((STATUS_HSYNC) != 0);
#ifdef CONFIG_PXA25x
#define CCNT(a) asm volatile ("mrc p14, 0, %0, C1, C0, 0" : "=r"(a))
#define PMNC_GET(x) asm volatile ("mrc p14, 0, %0, C0, C0, 0" : "=r"(x))
#define PMNC_SET(x) asm volatile ("mcr p14, 0, %0, C0, C0, 0" : : "r"(x))
#endif
#ifdef CONFIG_PXA27x
#define CCNT(a) asm volatile ("mrc p14, 0, %0, C1, C1, 0" : "=r"(a))
#define PMNC_GET(x) asm volatile ("mrc p14, 0, %0, C0, C1, 0" : "=r"(x))
#define PMNC_SET(x) asm volatile ("mcr p14, 0, %0, C0, C1, 0" : : "r"(x))
#endif
/* ADS7846 Touch Screen Controller bit definitions */
#define ADSCTRL_PD0 (1u << 0) /* PD0 */
......@@ -66,12 +71,11 @@ struct corgi_ts {
#define ADSCTRL_STS (1u << 7) /* Start Bit */
/* External Functions */
extern unsigned long w100fb_get_hsynclen(struct device *dev);
extern unsigned int get_clk_frequency_khz(int info);
static unsigned long calc_waittime(void)
static unsigned long calc_waittime(struct corgi_ts *corgi_ts)
{
unsigned long hsync_len = w100fb_get_hsynclen(&corgifb_device.dev);
unsigned long hsync_len = corgi_ts->machinfo->get_hsync_len();
if (hsync_len)
return get_clk_frequency_khz(0)*1000/hsync_len;
......@@ -79,7 +83,8 @@ static unsigned long calc_waittime(void)
return 0;
}
static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int address, unsigned long wait_time)
static int sync_receive_data_send_cmd(struct corgi_ts *corgi_ts, int doRecive, int doSend,
unsigned int address, unsigned long wait_time)
{
unsigned long timer1 = 0, timer2, pmnc = 0;
int pos = 0;
......@@ -90,7 +95,7 @@ static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int add
PMNC_SET(0x01);
/* polling HSync */
SyncHS();
corgi_ts->machinfo->wait_hsync();
/* get CCNT */
CCNT(timer1);
}
......@@ -109,7 +114,7 @@ static int sync_receive_data_send_cmd(int doRecive, int doSend, unsigned int add
CCNT(timer2);
if (timer2-timer1 > wait_time) {
/* too slow - timeout, try again */
SyncHS();
corgi_ts->machinfo->wait_hsync();
/* get OSCR */
CCNT(timer1);
/* Wait after HSync */
......@@ -133,23 +138,23 @@ static int read_xydata(struct corgi_ts *corgi_ts)
/* critical section */
local_irq_save(flags);
corgi_ssp_ads7846_lock();
wait_time=calc_waittime();
wait_time = calc_waittime(corgi_ts);
/* Y-axis */
sync_receive_data_send_cmd(0, 1, 1u, wait_time);
sync_receive_data_send_cmd(corgi_ts, 0, 1, 1u, wait_time);
/* Y-axis */
sync_receive_data_send_cmd(1, 1, 1u, wait_time);
sync_receive_data_send_cmd(corgi_ts, 1, 1, 1u, wait_time);
/* X-axis */
y = sync_receive_data_send_cmd(1, 1, 5u, wait_time);
y = sync_receive_data_send_cmd(corgi_ts, 1, 1, 5u, wait_time);
/* Z1 */
x = sync_receive_data_send_cmd(1, 1, 3u, wait_time);
x = sync_receive_data_send_cmd(corgi_ts, 1, 1, 3u, wait_time);
/* Z2 */
z1 = sync_receive_data_send_cmd(1, 1, 4u, wait_time);
z2 = sync_receive_data_send_cmd(1, 0, 4u, wait_time);
z1 = sync_receive_data_send_cmd(corgi_ts, 1, 1, 4u, wait_time);
z2 = sync_receive_data_send_cmd(corgi_ts, 1, 0, 4u, wait_time);
/* Power-Down Enable */
corgi_ssp_ads7846_put((1u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
......@@ -189,9 +194,9 @@ static void new_data(struct corgi_ts *corgi_ts, struct pt_regs *regs)
static void ts_interrupt_main(struct corgi_ts *corgi_ts, int isTimer, struct pt_regs *regs)
{
if ((GPLR(CORGI_GPIO_TP_INT) & GPIO_bit(CORGI_GPIO_TP_INT)) == 0) {
if ((GPLR(IRQ_TO_GPIO(corgi_ts->irq_gpio)) & GPIO_bit(IRQ_TO_GPIO(corgi_ts->irq_gpio))) == 0) {
/* Disable Interrupt */
set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_NOEDGE);
set_irq_type(corgi_ts->irq_gpio, IRQT_NOEDGE);
if (read_xydata(corgi_ts)) {
corgi_ts->pendown = 1;
new_data(corgi_ts, regs);
......@@ -210,7 +215,7 @@ static void ts_interrupt_main(struct corgi_ts *corgi_ts, int isTimer, struct pt_
}
/* Enable Falling Edge */
set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_FALLING);
set_irq_type(corgi_ts->irq_gpio, IRQT_FALLING);
corgi_ts->pendown = 0;
}
}
......@@ -254,7 +259,7 @@ static int corgits_resume(struct device *dev, uint32_t level)
corgi_ssp_ads7846_putget((4u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
/* Enable Falling Edge */
set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_FALLING);
set_irq_type(corgi_ts->irq_gpio, IRQT_FALLING);
corgi_ts->power_mode = PWR_MODE_ACTIVE;
}
return 0;
......@@ -267,6 +272,7 @@ static int corgits_resume(struct device *dev, uint32_t level)
static int __init corgits_probe(struct device *dev)
{
struct corgi_ts *corgi_ts;
struct platform_device *pdev = to_platform_device(dev);
if (!(corgi_ts = kmalloc(sizeof(struct corgi_ts), GFP_KERNEL)))
return -ENOMEM;
......@@ -275,6 +281,14 @@ static int __init corgits_probe(struct device *dev)
memset(corgi_ts, 0, sizeof(struct corgi_ts));
corgi_ts->machinfo = dev->platform_data;
corgi_ts->irq_gpio = platform_get_irq(pdev, 0);
if (corgi_ts->irq_gpio < 0) {
kfree(corgi_ts);
return -ENODEV;
}
init_input_dev(&corgi_ts->input);
corgi_ts->input.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
corgi_ts->input.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
......@@ -293,8 +307,7 @@ static int __init corgits_probe(struct device *dev)
corgi_ts->input.id.product = 0x0002;
corgi_ts->input.id.version = 0x0100;
pxa_gpio_mode(CORGI_GPIO_TP_INT | GPIO_IN);
pxa_gpio_mode(CORGI_GPIO_HSYNC | GPIO_IN);
pxa_gpio_mode(IRQ_TO_GPIO(corgi_ts->irq_gpio) | GPIO_IN);
/* Initiaize ADS7846 Difference Reference mode */
corgi_ssp_ads7846_putget((1u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
......@@ -313,14 +326,14 @@ static int __init corgits_probe(struct device *dev)
input_register_device(&corgi_ts->input);
corgi_ts->power_mode = PWR_MODE_ACTIVE;
if (request_irq(CORGI_IRQ_GPIO_TP_INT, ts_interrupt, SA_INTERRUPT, "ts", corgi_ts)) {
if (request_irq(corgi_ts->irq_gpio, ts_interrupt, SA_INTERRUPT, "ts", corgi_ts)) {
input_unregister_device(&corgi_ts->input);
kfree(corgi_ts);
return -EBUSY;
}
/* Enable Falling Edge */
set_irq_type(CORGI_IRQ_GPIO_TP_INT, IRQT_FALLING);
set_irq_type(corgi_ts->irq_gpio, IRQT_FALLING);
printk(KERN_INFO "input: Corgi Touchscreen Registered\n");
......@@ -331,8 +344,9 @@ static int corgits_remove(struct device *dev)
{
struct corgi_ts *corgi_ts = dev_get_drvdata(dev);
free_irq(CORGI_IRQ_GPIO_TP_INT, NULL);
free_irq(corgi_ts->irq_gpio, NULL);
del_timer_sync(&corgi_ts->timer);
corgi_ts->machinfo->put_hsync();
input_unregister_device(&corgi_ts->input);
kfree(corgi_ts);
return 0;
......
......@@ -19,6 +19,7 @@ struct w100fb_par;
unsigned long w100fb_gpio_read(int port);
void w100fb_gpio_write(int port, unsigned long value);
unsigned long w100fb_get_hsynclen(struct device *dev);
/* LCD Specific Routines and Config */
struct w100_tg_info {
......
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