mirror of
https://github.com/Freescale/meta-freescale-3rdparty.git
synced 2025-07-19 12:09:01 +02:00
fbccb80ee0
This recipe is a fork of the fslc kernel with patches for supporting the imx6q-elo platform. This recipe is intended to be a stop-gap until the imx6q-elo board can be rebased and tested with the most recent fslc branch. Signed-off-by: Justin Waters <justin.waters@timesys.com> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
115 lines
3.7 KiB
Diff
115 lines
3.7 KiB
Diff
From 9d4ceb72253709f7ae6fe02b65eed40053a94902 Mon Sep 17 00:00:00 2001
|
|
From: Steve Twiss <stwiss.opensource@diasemi.com>
|
|
Date: Tue, 19 May 2015 11:32:45 +0100
|
|
Subject: [PATCH 07/10] mfd: da9063: Add support for OnKey driver
|
|
|
|
Add MFD support for the DA9063 OnKey driver
|
|
|
|
The function da9063_clear_fault_log() is added to mitigate the case of a
|
|
hardware power-cut after a long-long OnKey press. Although there is no
|
|
software intervention in this case (by definition) such a shutdown would
|
|
cause persistent information within the DA9063 FAULT_LOG that would be
|
|
available during the next device restart.
|
|
|
|
Clearance of this persistent register must be completed after such a
|
|
hardware power-cut operation has happened so that the FAULT_LOG does not
|
|
continue with previous values. The clearance function has been added here
|
|
in the kernel driver because wiping the fault-log cannot be counted on
|
|
outside the Linux kernel.
|
|
|
|
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
|
|
[Lee: Removed 'key_power' for Dmitry to take through the Input Tree]
|
|
Signed-off-by: Lee Jones <lee.jones@linaro.org>
|
|
---
|
|
drivers/mfd/da9063-core.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++
|
|
1 file changed, 54 insertions(+)
|
|
|
|
diff --git a/drivers/mfd/da9063-core.c b/drivers/mfd/da9063-core.c
|
|
index f38bc98..141c2df 100644
|
|
--- a/drivers/mfd/da9063-core.c
|
|
+++ b/drivers/mfd/da9063-core.c
|
|
@@ -60,6 +60,7 @@ static struct resource da9063_rtc_resources[] = {
|
|
|
|
static struct resource da9063_onkey_resources[] = {
|
|
{
|
|
+ .name = "ONKEY",
|
|
.start = DA9063_IRQ_ONKEY,
|
|
.end = DA9063_IRQ_ONKEY,
|
|
.flags = IORESOURCE_IRQ,
|
|
@@ -96,6 +97,7 @@ static const struct mfd_cell da9063_devs[] = {
|
|
.name = DA9063_DRVNAME_ONKEY,
|
|
.num_resources = ARRAY_SIZE(da9063_onkey_resources),
|
|
.resources = da9063_onkey_resources,
|
|
+ .of_compatible = "dlg,da9063-onkey",
|
|
},
|
|
{
|
|
.name = DA9063_DRVNAME_RTC,
|
|
@@ -107,12 +109,64 @@ static const struct mfd_cell da9063_devs[] = {
|
|
},
|
|
};
|
|
|
|
+static int da9063_clear_fault_log(struct da9063 *da9063)
|
|
+{
|
|
+ int ret = 0;
|
|
+ int fault_log = 0;
|
|
+
|
|
+ ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log);
|
|
+ if (ret < 0) {
|
|
+ dev_err(da9063->dev, "Cannot read FAULT_LOG.\n");
|
|
+ return -EIO;
|
|
+ }
|
|
+
|
|
+ if (fault_log) {
|
|
+ if (fault_log & DA9063_TWD_ERROR)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_TWD_ERROR\n");
|
|
+ if (fault_log & DA9063_POR)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_POR\n");
|
|
+ if (fault_log & DA9063_VDD_FAULT)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_VDD_FAULT\n");
|
|
+ if (fault_log & DA9063_VDD_START)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_VDD_START\n");
|
|
+ if (fault_log & DA9063_TEMP_CRIT)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_TEMP_CRIT\n");
|
|
+ if (fault_log & DA9063_KEY_RESET)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_KEY_RESET\n");
|
|
+ if (fault_log & DA9063_NSHUTDOWN)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_NSHUTDOWN\n");
|
|
+ if (fault_log & DA9063_WAIT_SHUT)
|
|
+ dev_dbg(da9063->dev,
|
|
+ "Fault log entry detected: DA9063_WAIT_SHUT\n");
|
|
+ }
|
|
+
|
|
+ ret = regmap_write(da9063->regmap,
|
|
+ DA9063_REG_FAULT_LOG,
|
|
+ fault_log);
|
|
+ if (ret < 0)
|
|
+ dev_err(da9063->dev,
|
|
+ "Cannot reset FAULT_LOG values %d\n", ret);
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
int da9063_device_init(struct da9063 *da9063, unsigned int irq)
|
|
{
|
|
struct da9063_pdata *pdata = da9063->dev->platform_data;
|
|
int model, variant_id, variant_code;
|
|
int ret;
|
|
|
|
+ ret = da9063_clear_fault_log(da9063);
|
|
+ if (ret < 0)
|
|
+ dev_err(da9063->dev, "Cannot clear fault log\n");
|
|
+
|
|
if (pdata) {
|
|
da9063->flags = pdata->flags;
|
|
da9063->irq_base = pdata->irq_base;
|
|
--
|
|
2.5.0
|
|
|