From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Samuel Ortiz <sameo@linux.intel.com>
Cc: patches@opensource.wolfsonmicro.com,
linux-kernel@vger.kernel.org,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH] mfd: wm8994: Read CUST_ID from the device
Date: Mon, 26 Mar 2012 16:12:31 +0100 [thread overview]
Message-ID: <1332774751-8506-1-git-send-email-broonie@opensource.wolfsonmicro.com> (raw)
Read CUST_ID from the device and log it for diagnostics.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
drivers/mfd/wm8994-core.c | 7 ++++---
include/linux/mfd/wm8994/core.h | 1 +
include/linux/mfd/wm8994/registers.h | 3 +++
3 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 9d7ca1e..60e61754 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -500,7 +500,8 @@ static __devinit int wm8994_device_init(struct wm8994 *wm8994, int irq)
ret);
goto err_enable;
}
- wm8994->revision = ret;
+ wm8994->revision = ret & WM8994_CHIP_REV_MASK;
+ wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT;
switch (wm8994->type) {
case WM8994:
@@ -553,8 +554,8 @@ static __devinit int wm8994_device_init(struct wm8994 *wm8994, int irq)
break;
}
- dev_info(wm8994->dev, "%s revision %c\n", devname,
- 'A' + wm8994->revision);
+ dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname,
+ 'A' + wm8994->revision, wm8994->cust_id);
switch (wm8994->type) {
case WM1811:
diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h
index 9eff2a3..d41bc7b 100644
--- a/include/linux/mfd/wm8994/core.h
+++ b/include/linux/mfd/wm8994/core.h
@@ -57,6 +57,7 @@ struct wm8994 {
enum wm8994_type type;
int revision;
+ int cust_id;
struct device *dev;
struct regmap *regmap;
diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h
index 86e6a03..0535489 100644
--- a/include/linux/mfd/wm8994/registers.h
+++ b/include/linux/mfd/wm8994/registers.h
@@ -2212,6 +2212,9 @@
/*
* R256 (0x100) - Chip Revision
*/
+#define WM8994_CUST_ID_MASK 0xFF00 /* CUST_ID - [15:8] */
+#define WM8994_CUST_ID_SHIFT 8 /* CUST_ID - [15:8] */
+#define WM8994_CUST_ID_WIDTH 8 /* CUST_ID - [15:8] */
#define WM8994_CHIP_REV_MASK 0x000F /* CHIP_REV - [3:0] */
#define WM8994_CHIP_REV_SHIFT 0 /* CHIP_REV - [3:0] */
#define WM8994_CHIP_REV_WIDTH 4 /* CHIP_REV - [3:0] */
--
1.7.9.1
reply other threads:[~2012-03-26 15:12 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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