[-mm patch 3/6] SharpSL: Abstract c7x0 specifics from Corgi Touchscreen driver
From: Richard Purdie (rpurdie_at_rpsys.net)
Date: 09/09/05
- Previous message: Richard Purdie: "[-mm patch 4/6] SharpSL: Abstract model specifics from Corgi Backlight driver"
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To: Andrew Morton <akpm@osdl.org> Date: Fri, 09 Sep 2005 18:15:38 +0100
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: Richard Purdie <rpurdie@rpsys.net>
Index: linux-2.6.13/drivers/input/touchscreen/corgi_ts.c
===================================================================
--- linux-2.6.13.orig/drivers/input/touchscreen/corgi_ts.c 2005-09-09 16:48:00.000000000 +0100
+++ linux-2.6.13/drivers/input/touchscreen/corgi_ts.c 2005-09-09 16:49:16.000000000 +0100
@@ -1,5 +1,5 @@
/*
- * 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 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 @@
#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 @@
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 @@
PMNC_SET(0x01);
/* polling HSync */
- SyncHS();
+ corgi_ts->machinfo->wait_hsync();
/* get CCNT */
CCNT(timer1);
}
@@ -109,7 +114,7 @@
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 @@
/* 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 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 @@
}
/* 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 @@
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 __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 @@
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 @@
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 @@
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 @@
{
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;
Index: linux-2.6.13/drivers/input/touchscreen/Kconfig
===================================================================
--- linux-2.6.13.orig/drivers/input/touchscreen/Kconfig 2005-09-09 16:48:00.000000000 +0100
+++ linux-2.6.13/drivers/input/touchscreen/Kconfig 2005-09-09 17:00:33.000000000 +0100
@@ -24,17 +24,17 @@
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"
Index: linux-2.6.13/arch/arm/mach-pxa/corgi.c
===================================================================
--- linux-2.6.13.orig/arch/arm/mach-pxa/corgi.c 2005-09-09 16:48:00.000000000 +0100
+++ linux-2.6.13/arch/arm/mach-pxa/corgi.c 2005-09-09 17:03:11.000000000 +0100
@@ -130,12 +130,29 @@
/*
* 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,
};
@@ -257,6 +274,7 @@
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);
Index: linux-2.6.13/include/video/w100fb.h
===================================================================
--- linux-2.6.13.orig/include/video/w100fb.h 2005-09-09 16:48:00.000000000 +0100
+++ linux-2.6.13/include/video/w100fb.h 2005-09-09 16:49:16.000000000 +0100
@@ -19,6 +19,7 @@
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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- Previous message: Richard Purdie: "[-mm patch 4/6] SharpSL: Abstract model specifics from Corgi Backlight driver"
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