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Message-Id: <1363964122-19201-4-git-send-email-ian@slimlogic.co.uk>
Date: Fri, 22 Mar 2013 14:55:13 +0000
From: Ian Lartey <ian@...mlogic.co.uk>
To: linux-kernel@...r.kernel.org
Cc: linux-doc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-leds@...r.kernel.org, linux-watchdog@...r.kernel.org,
devicetree-discuss@...ts.ozlabs.org, swarren@...dotorg.org,
grant.likely@...retlab.ca, broonie@...nsource.wolfsonmicro.com,
rob.herring@...xeda.com, rob@...dley.net, mturquette@...aro.org,
linus.walleij@...aro.org, cooloney@...il.com, sfr@...b.auug.org.au,
rpurdie@...ys.net, akpm@...ux-foundation.org,
sameo@...ux.intel.com, wim@...ana.be, lgirdwood@...il.com,
gg@...mlogic.co.uk, j-keerthy@...com, ldewangan@...dia.com,
t-kristo@...com
Subject: [PATCH v10 03/12] 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.
palmas register read/write/update API is now used
palmas_read_product_id_and_revs used by palmas_i2c_probe to get
the device id, design and software revisions
id field of pamas struct renamed to device_id
Updated the DT parsing to agree with the bindings document, just some minor
value name changes.
Signed-off-by: Graeme Gregory <gg@...mlogic.co.uk>
Signed-off-by: Ian Lartey <ian@...mlogic.co.uk>
---
drivers/mfd/palmas.c | 102 ++++++++++++++++++++++++++++++++++----------
include/linux/mfd/palmas.h | 35 +++++++++++++++-
2 files changed, 113 insertions(+), 24 deletions(-)
diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
index 73bf76d..913416f 100644
--- a/drivers/mfd/palmas.c
+++ b/drivers/mfd/palmas.c
@@ -1,9 +1,10 @@
/*
* TI Palmas MFD Driver
*
- * Copyright 2011-2012 Texas Instruments Inc.
+ * Copyright 2011-2013 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
@@ -257,6 +258,56 @@ static struct regmap_irq_chip palmas_irq_chip = {
PALMAS_INT1_MASK),
};
+static int palmas_read_product_id_and_revs(struct palmas *palmas)
+{
+ int ret;
+ unsigned int reg;
+
+ /* Read variant info from the device */
+ ret = palmas_read(palmas, PALMAS_ID_BASE, PALMAS_PRODUCT_ID_LSB, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read ID err: %d\n", ret);
+ return ret;
+ }
+
+ palmas->product_id = reg;
+
+ ret = palmas_read(palmas, PALMAS_ID_BASE, PALMAS_PRODUCT_ID_MSB, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read ID err: %d\n", ret);
+ return ret;
+ }
+
+ palmas->product_id |= reg << 8;
+
+ dev_info(palmas->dev, "Product ID %x\n", palmas->product_id);
+
+ ret = palmas_read(palmas, PALMAS_DESIGNREV_BASE,
+ PALMAS_DESIGNREV, ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read DESIGNREV err: %d\n", ret);
+ return ret;
+ }
+
+ palmas->designrev = reg & PALMAS_DESIGNREV_DESIGNREV_MASK;
+
+ dev_info(palmas->dev, "Product Design Rev %x\n", palmas->designrev);
+
+ ret = palmas_read(palmas, PALMAS_PMU_CONTROL_BASE, PALMAS_SW_REVISION,
+ ®);
+ if (ret < 0) {
+ dev_err(palmas->dev, "Unable to read SW_REVISION err: %d\n",
+ ret);
+ return ret;
+ }
+
+ palmas->sw_revision = reg;
+
+ dev_info(palmas->dev, "Product SW Rev %x\n", palmas->sw_revision);
+
+ return 0;
+}
+
static int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
struct palmas_platform_data *pdata)
{
@@ -278,20 +329,20 @@ static void palmas_dt_to_pdata(struct i2c_client *i2c,
int ret;
u32 prop;
- ret = of_property_read_u32(node, "ti,mux_pad1", &prop);
+ ret = of_property_read_u32(node, "ti,mux-pad1", &prop);
if (!ret) {
pdata->mux_from_pdata = 1;
pdata->pad1 = prop;
}
- ret = of_property_read_u32(node, "ti,mux_pad2", &prop);
+ ret = of_property_read_u32(node, "ti,mux-pad2", &prop);
if (!ret) {
pdata->mux_from_pdata = 1;
pdata->pad2 = prop;
}
/* The default for this register is all masked */
- ret = of_property_read_u32(node, "ti,power_ctrl", &prop);
+ ret = of_property_read_u32(node, "ti,power-ctrl", &prop);
if (!ret)
pdata->power_ctrl = prop;
else
@@ -309,7 +360,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
struct palmas_platform_data *pdata;
struct device_node *node = i2c->dev.of_node;
int ret = 0, i;
- unsigned int reg, addr;
+ unsigned int reg;
int slave;
struct mfd_cell *children;
@@ -333,7 +384,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, palmas);
palmas->dev = &i2c->dev;
- palmas->id = id->driver_data;
+ palmas->product_id = id->driver_data;
palmas->irq = i2c->irq;
for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
@@ -374,12 +425,16 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
goto err;
}
+ /* Read variant info from the device */
+ ret = palmas_read_product_id_and_revs(palmas);
+ if (ret < 0)
+ goto err;
+
/* 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);
reg = PALMAS_INT_CTRL_INT_CLEAR;
- regmap_write(palmas->regmap[slave], addr, reg);
+ ret = palmas_write(palmas, PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL, reg);
ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
IRQF_ONESHOT | pdata->irq_flags, 0, &palmas_irq_chip,
@@ -387,17 +442,15 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
if (ret < 0)
goto err;
- slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
- addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
- PALMAS_PRIMARY_SECONDARY_PAD1);
-
if (pdata->mux_from_pdata) {
reg = pdata->pad1;
- ret = regmap_write(palmas->regmap[slave], addr, reg);
+ ret = palmas_write(palmas, PALMAS_PU_PD_OD_BASE,
+ PALMAS_PRIMARY_SECONDARY_PAD1, reg);
if (ret)
goto err_irq;
} else {
- ret = regmap_read(palmas->regmap[slave], addr, ®);
+ ret = palmas_read(palmas, PALMAS_PU_PD_OD_BASE,
+ PALMAS_PRIMARY_SECONDARY_PAD1, ®);
if (ret)
goto err_irq;
}
@@ -423,16 +476,15 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3))
palmas->gpio_muxed |= PALMAS_GPIO_3_MUXED;
- addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
- PALMAS_PRIMARY_SECONDARY_PAD2);
-
if (pdata->mux_from_pdata) {
reg = pdata->pad2;
- ret = regmap_write(palmas->regmap[slave], addr, reg);
+ ret = palmas_write(palmas, PALMAS_PU_PD_OD_BASE,
+ PALMAS_PRIMARY_SECONDARY_PAD2, reg);
if (ret)
goto err_irq;
} else {
- ret = regmap_read(palmas->regmap[slave], addr, ®);
+ ret = palmas_read(palmas, PALMAS_PU_PD_OD_BASE,
+ PALMAS_PRIMARY_SECONDARY_PAD2, ®);
if (ret)
goto err_irq;
}
@@ -452,10 +504,8 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
reg = pdata->power_ctrl;
- slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
- addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL);
-
- ret = regmap_write(palmas->regmap[slave], addr, reg);
+ ret = palmas_write(palmas, PALMAS_PU_PD_OD_BASE,
+ PALMAS_PRIMARY_SECONDARY_PAD2, reg);
if (ret)
goto err_irq;
@@ -534,6 +584,12 @@ MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);
static struct of_device_id of_palmas_match_tbl[] = {
{ .compatible = "ti,palmas", },
+ { .compatible = "ti,twl6035", },
+ { .compatible = "ti,twl6036", },
+ { .compatible = "ti,twl6037", },
+ { .compatible = "ti,tps65913", },
+ { .compatible = "ti,tps65914", },
+ { .compatible = "ti,tps80036", },
{ /* end */ }
};
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 4a066d0..4cffe31 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -44,7 +44,9 @@ struct palmas {
struct regmap *regmap[PALMAS_NUM_CLIENTS];
/* Stored chip id */
- int id;
+ int product_id;
+ int designrev;
+ int sw_revision;
/* IRQ Data */
int irq;
@@ -438,11 +440,13 @@ 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 */
@@ -2160,6 +2164,28 @@ 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
@@ -2782,6 +2808,13 @@ 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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