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Message-Id: <1361494325-4416-2-git-send-email-ian@slimlogic.co.uk>
Date: Fri, 22 Feb 2013 00:52:05 +0000
From: Ian Lartey <ian@...mlogic.co.uk>
To: linux-kernel@...r.kernel.org, broonie@...nsource.wolfsonmicro.com,
lrg@...com, sameo@...ux.intel.com
Cc: ldewangan@...dia.com, Graeme Gregory <gg@...mlogic.co.uk>,
Ian Lartey <ian@...mlogic.co.uk>
Subject: [PATCH 2/2] mfd: palmas add variant and OTP detection
From: Graeme Gregory <gg@...mlogic.co.uk>
Read the chip varient and the OTP information from the chip and display
this on probe to aid in debugging of issues.
Older palmas chips do not have the USB_ID programmed and will therefore
return 0x0000 for this field.
Signed-off-by: Graeme Gregory <gg@...mlogic.co.uk>
Signed-off-by: Ian Lartey <ian@...mlogic.co.uk>
---
drivers/mfd/palmas.c | 49 ++++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/palmas.h | 38 ++++++++++++++++++++++++++++++++++
2 files changed, 87 insertions(+), 0 deletions(-)
diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
index bbdbc50..2bca666 100644
--- a/drivers/mfd/palmas.c
+++ b/drivers/mfd/palmas.c
@@ -4,6 +4,7 @@
* Copyright 2011-2012 Texas Instruments Inc.
*
* Author: Graeme Gregory <gg@...mlogic.co.uk>
+ * Author: Ian Lartey <ian@...mlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -344,6 +345,54 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
}
}
+ /* Read varient info from the device */
+ slave = PALMAS_BASE_TO_SLAVE(PALMAS_ID_BASE);
+ addr = PALMAS_BASE_TO_REG(PALMAS_ID_BASE, PALMAS_PRODUCT_ID_LSB);
+ ret = regmap_read(palmas->regmap[slave], addr, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read ID err: %d\n", ret);
+ goto err;
+ }
+
+ palmas->id = reg;
+
+ slave = PALMAS_BASE_TO_SLAVE(PALMAS_ID_BASE);
+ addr = PALMAS_BASE_TO_REG(PALMAS_ID_BASE, PALMAS_PRODUCT_ID_MSB);
+ ret = regmap_read(palmas->regmap[slave], addr, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read ID err: %d\n", ret);
+ goto err;
+ }
+
+ palmas->id |= reg << 8;
+
+ dev_info(palmas->dev, "Product ID %x\n", palmas->id);
+
+ slave = PALMAS_BASE_TO_SLAVE(PALMAS_DESIGNREV_BASE);
+ addr = PALMAS_BASE_TO_REG(PALMAS_DESIGNREV_BASE, PALMAS_DESIGNREV);
+ ret = regmap_read(palmas->regmap[slave], addr, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read DESIGNREV err: %d\n", ret);
+ goto err;
+ }
+
+ palmas->designrev = reg & PALMAS_DESIGNREV_DESIGNREV_MASK;
+
+ dev_info(palmas->dev, "Product Design Rev %x\n", palmas->designrev);
+
+ slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
+ addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_SW_REVISION);
+ ret = regmap_read(palmas->regmap[slave], addr, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read SW_REVISION err: %d\n",
+ ret);
+ goto err;
+ }
+
+ palmas->sw_revision = reg;
+
+ dev_info(palmas->dev, "Product SW Rev %x\n", palmas->sw_revision);
+
/* Change IRQ into clear on read mode for efficiency */
slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index a4d13d7..2e8b747 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -4,6 +4,7 @@
* Copyright 2011 Texas Instruments Inc.
*
* Author: Graeme Gregory <gg@...mlogic.co.uk>
+ * Author: Ian Lartey <ian@...mlogic.co.uk>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -22,6 +23,10 @@
#define PALMAS_NUM_CLIENTS 3
+/* The ID_REVISION NUMBERS */
+#define PALMAS_CHIP_OLD_ID 0x0000
+#define PALMAS_CHIP_ID 0xC035
+
struct palmas_pmic;
struct palmas_gpadc;
struct palmas_resource;
@@ -35,6 +40,8 @@ struct palmas {
/* Stored chip id */
int id;
+ int designrev;
+ int sw_revision;
/* IRQ Data */
int irq;
@@ -427,11 +434,13 @@ enum usb_irq_events {
#define PALMAS_PU_PD_OD_BASE 0x1F4
#define PALMAS_LED_BASE 0x200
#define PALMAS_INTERRUPT_BASE 0x210
+#define PALMAS_ID_BASE 0x24F
#define PALMAS_USB_OTG_BASE 0x250
#define PALMAS_VIBRATOR_BASE 0x270
#define PALMAS_GPIO_BASE 0x280
#define PALMAS_USB_BASE 0x290
#define PALMAS_GPADC_BASE 0x2C0
+#define PALMAS_DESIGNREV_BASE 0x357
#define PALMAS_TRIM_GPADC_BASE 0x3CD
/* Registers for function RTC */
@@ -2149,6 +2158,28 @@ enum usb_irq_events {
#define PALMAS_INT_CTRL_INT_CLEAR 0x01
#define PALMAS_INT_CTRL_INT_CLEAR_SHIFT 0
+/* Registers for function ID */
+#define PALMAS_VENDOR_ID_LSB 0x0
+#define PALMAS_VENDOR_ID_MSB 0x1
+#define PALMAS_PRODUCT_ID_LSB 0x2
+#define PALMAS_PRODUCT_ID_MSB 0x3
+
+/* Bit definitions for VENDOR_ID_LSB */
+#define PALMAS_VENDOR_ID_LSB_VENDOR_ID_MASK 0xff
+#define PALMAS_VENDOR_ID_LSB_VENDOR_ID_SHIFT 0
+
+/* Bit definitions for VENDOR_ID_MSB */
+#define PALMAS_VENDOR_ID_MSB_VENDOR_ID_MASK 0xff
+#define PALMAS_VENDOR_ID_MSB_VENDOR_ID_SHIFT 0
+
+/* Bit definitions for PRODUCT_ID_LSB */
+#define PALMAS_PRODUCT_ID_LSB_PRODUCT_ID_MASK 0xff
+#define PALMAS_PRODUCT_ID_LSB_PRODUCT_ID_SHIFT 0
+
+/* Bit definitions for PRODUCT_ID_MSB */
+#define PALMAS_PRODUCT_ID_MSB_PRODUCT_ID_MASK 0xff
+#define PALMAS_PRODUCT_ID_MSB_PRODUCT_ID_SHIFT 0
+
/* Registers for function USB_OTG */
#define PALMAS_USB_WAKEUP 0x3
#define PALMAS_USB_VBUS_CTRL_SET 0x4
@@ -2771,6 +2802,13 @@ enum usb_irq_events {
#define PALMAS_GPADC_SMPS_VSEL_MONITORING_SMPS_VSEL_MONITORING_MASK 0x7f
#define PALMAS_GPADC_SMPS_VSEL_MONITORING_SMPS_VSEL_MONITORING_SHIFT 0
+/* Registers for function DESIGNREV */
+#define PALMAS_DESIGNREV 0x0
+
+/* Bit definitions for DESIGNREV */
+#define PALMAS_DESIGNREV_DESIGNREV_MASK 0x0f
+#define PALMAS_DESIGNREV_DESIGNREV_SHIFT 0
+
/* Registers for function GPADC */
#define PALMAS_GPADC_TRIM1 0x0
#define PALMAS_GPADC_TRIM2 0x1
--
1.7.0.4
--
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