add support for target 3c24xx (more known as Openmoko GTA02 "Freerunner") and merge it with the openmoko-target and the work Michael Buesch <mb> did

SVN-Revision: 13609

1 files changed, 168 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches/0190-fix-lis302dl-resume-and-init-reload-boot-coefficient.patch b/target/linux/s3c24xx/patches/0190-fix-lis302dl-resume-and-init-reload-boot-coefficient.patch
new file mode 100755
index 0000000000..cec5985a9b
--- /dev/null
+++ b/target/linux/s3c24xx/patches/0190-fix-lis302dl-resume-and-init-reload-boot-coefficient.patch
@@ -0,0 +1,168 @@
+From d0c3a8bdfe2722f00b5ec7812500fbf1f6229b9f Mon Sep 17 00:00:00 2001
+From: Andy Green <andy@openmoko.com>
+Date: Fri, 25 Jul 2008 23:06:16 +0100
+Subject: [PATCH] fix-lis302dl-resume-and-init-reload-boot-coefficients.patch
+ Reported-by: John Lee <john_lee@openmoko.com>
+
+We don't reset the devices either at init or resume, where init
+means use the BOOT bit to reload device calibration coefficients
+from internal EEPROM.  John Lee saw brain-damaged behaviour after
+resume and sometimes after boot (since it may not have lost power
+to force a BOOT itself that makes sense).
+
+This patch
+
+ - adds a diagnostic dump feature down /sys
+ - forces BOOT action on init and resume, and waits for
+   completion
+ - makes sure XYZ capture is enabled on resume
+ - adds some constants in the .h and removes some magic numbers
+   in the code by using them
+
+Signed-off-by: Andy Green <andy@openmoko.com>
+---
+ drivers/input/misc/lis302dl.c |   78 +++++++++++++++++++++++++++++++++++++++--
+ include/linux/lis302dl.h      |    9 +++++
+ 2 files changed, 84 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
+index 1d19418..553a731 100644
+--- a/drivers/input/misc/lis302dl.c
++++ b/drivers/input/misc/lis302dl.c
+@@ -221,9 +221,37 @@ static ssize_t set_scale(struct device *dev, struct device_attribute *attr,
+ 
+ static DEVICE_ATTR(full_scale, S_IRUGO | S_IWUSR, show_scale, set_scale);
+ 
++static ssize_t lis302dl_dump(struct device *dev, struct device_attribute *attr,
++			  char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	int n = 0;
++	u8 reg[0x40];
++	char *end = buf;
++	unsigned long flags;
++
++	local_save_flags(flags);
++
++	for (n = 0; n < sizeof(reg); n++)
++		reg[n] = reg_read(lis, n);
++
++	local_irq_restore(flags);
++
++	for (n = 0; n < sizeof(reg); n += 16) {
++		hex_dump_to_buffer(reg + n, 16, 16, 1, end, 128, 0);
++		end += strlen(end);
++		*end++ = '\n';
++		*end++ = '\0';
++	}
++
++	return end - buf;
++}
++static DEVICE_ATTR(dump, S_IRUGO, lis302dl_dump, NULL);
++
+ static struct attribute *lis302dl_sysfs_entries[] = {
+ 	&dev_attr_sample_rate.attr,
+ 	&dev_attr_full_scale.attr,
++	&dev_attr_dump.attr,
+ 	NULL
+ };
+ 
+@@ -276,6 +304,24 @@ static void lis302dl_input_close(struct input_dev *inp)
+ 	local_irq_restore(flags);
+ }
+ 
++/* get the device to reload its coefficients from EEPROM and wait for it
++ * to complete
++ */
++
++static int __lis302dl_reset_device(struct lis302dl_info *lis)
++{
++	int timeout = 10;
++
++	reg_write(lis, LIS302DL_REG_CTRL2, LIS302DL_CTRL2_BOOT |
++							    LIS302DL_CTRL2_FDS);
++
++	while ((reg_read(lis, LIS302DL_REG_CTRL2) & LIS302DL_CTRL2_BOOT) &&
++								    (timeout--))
++		mdelay(1);
++
++	return !!(timeout < 0);
++}
++
+ static int __devinit lis302dl_probe(struct spi_device *spi)
+ {
+ 	int rc;
+@@ -347,12 +393,24 @@ static int __devinit lis302dl_probe(struct spi_device *spi)
+ 		goto bail_inp_dev;
+ 	}
+ 
+-	reg_write(lis, LIS302DL_REG_CTRL1, 0x47);
+-	reg_write(lis, LIS302DL_REG_CTRL3, 0xc0);
++	if (__lis302dl_reset_device(lis))
++		dev_err(&spi->dev, "device BOOT reload failed\n");
++
++	/* force us powered */
++	reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_PD |
++					   LIS302DL_CTRL1_Xen |
++					   LIS302DL_CTRL1_Yen |
++					   LIS302DL_CTRL1_Zen);
++	mdelay(1);
++
++	reg_write(lis, LIS302DL_REG_CTRL2, 0);
++	reg_write(lis, LIS302DL_REG_CTRL3, LIS302DL_CTRL3_PP_OD |
++							    LIS302DL_CTRL3_IHL);
+ 	reg_write(lis, LIS302DL_REG_FF_WU_THS_1, 0x14);
+ 	reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1, 0x00);
+ 	reg_write(lis, LIS302DL_REG_FF_WU_CFG_1, 0x95);
+ 
++	/* start off in powered down mode; we power up when someone opens us */
+ 	reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_Xen |
+ 					   LIS302DL_CTRL1_Yen |
+ 			 		   LIS302DL_CTRL1_Zen);
+@@ -494,8 +552,22 @@ static int lis302dl_resume(struct spi_device *spi)
+ 	/* get our IO to the device back in operational states */
+ 	(lis->pdata->lis302dl_suspend_io)(lis, 1);
+ 
++	/* resume from powerdown first! */
++	reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_PD |
++					   LIS302DL_CTRL1_Xen |
++					   LIS302DL_CTRL1_Yen |
++					   LIS302DL_CTRL1_Zen);
++	mdelay(1);
++
++	if (__lis302dl_reset_device(lis))
++		dev_err(&spi->dev, "device BOOT reload failed\n");
++
+ 	/* restore registers after resume */
+-	reg_write(lis, LIS302DL_REG_CTRL1, lis->regs[LIS302DL_REG_CTRL1]);
++	reg_write(lis, LIS302DL_REG_CTRL1, lis->regs[LIS302DL_REG_CTRL1] |
++						LIS302DL_CTRL1_PD |
++						LIS302DL_CTRL1_Xen |
++						LIS302DL_CTRL1_Yen |
++						LIS302DL_CTRL1_Zen);
+ 	reg_write(lis, LIS302DL_REG_CTRL2, lis->regs[LIS302DL_REG_CTRL2]);
+ 	reg_write(lis, LIS302DL_REG_CTRL3, lis->regs[LIS302DL_REG_CTRL3]);
+ 	reg_write(lis, LIS302DL_REG_FF_WU_CFG_1,
+diff --git a/include/linux/lis302dl.h b/include/linux/lis302dl.h
+index 0d6b4c4..4d8ded9 100644
+--- a/include/linux/lis302dl.h
++++ b/include/linux/lis302dl.h
+@@ -66,6 +66,15 @@ enum lis302dl_reg_ctrl1 {
+ 	LIS302DL_CTRL1_DR		= 0x80,
+ };
+ 
++enum lis302dl_reg_ctrl2 {
++	LIS302DL_CTRL2_HPC1		= 0x01,
++	LIS302DL_CTRL2_HPC2		= 0x02,
++	LIS302DL_CTRL2_HPFF1		= 0x04,
++	LIS302DL_CTRL2_HPFF2		= 0x08,
++	LIS302DL_CTRL2_FDS		= 0x10,
++	LIS302DL_CTRL2_BOOT		= 0x40,
++	LIS302DL_CTRL2_SIM		= 0x80,
++};
+ enum lis302dl_reg_ctrl3 {
+ 	LIS302DL_CTRL3_PP_OD		= 0x40,
+ 	LIS302DL_CTRL3_IHL		= 0x80,
+-- 
+1.5.6.3
+