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Subject[PATCH 3/5] mfd: arizona: Add simple microphone detection device tree bindings
Date
Add device tree bindings for several of simpler microphone detection
pdata fields.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
Documentation/devicetree/bindings/mfd/arizona.txt | 23 +++++++++++++++++++++
drivers/mfd/arizona-core.c | 22 ++++++++++++++++++++
2 files changed, 45 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
index 9eeef62..3ee659d 100644
--- a/Documentation/devicetree/bindings/mfd/arizona.txt
+++ b/Documentation/devicetree/bindings/mfd/arizona.txt
@@ -34,6 +34,22 @@ Optional properties:
- wlf,reset : GPIO specifier for the GPIO controlling /RESET
- wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA

+ - wlf,micd-detect-debounce : Additional software microphone detection
+ debounce specified in milliseconds
+ - wlf,micd-pol-gpio : GPIO specifier for the GPIO controlling the headset
+ polarity if one exists
+ - wlf,micd-bias-start-time : Time allowed for MICBIAS to startup prior to
+ performing microphone detection, specified as per the MICD_BIAS_STARTTIME
+ bits in the register MIC_DETECT_1
+ - wlf,micd-rate : Delay between successive microphone detection measurements,
+ specified as per the MICD_RATE bits in the register MIC_DETECT_1
+ - wlf,micd-dbtime : Microphone detection hardware debounce level, specified
+ as per the MICD_DBTIME bits in the register MIC_DETECT_1
+ - wlf,micd-timeout : Timeout for microphone detection, specified in
+ milliseconds
+ - wlf,micd-force-micbias : Force MICBIAS continuously on during microphone
+ detection
+
- wlf,gpio-defaults : A list of GPIO configuration register values. If
absent, no configuration of these registers is performed. If any
entry has a value that is out of range for a 16 bit register then
@@ -57,6 +73,13 @@ codec: wm5102@1a {
gpio-controller;
#gpio-cells = <2>;

+ wlf,micd-detect-debounce = <10>;
+ wlf,micd-bias-start-time = <0x1>;
+ wlf,micd-rate = <0x1>;
+ wlf,micd-dbtime = <0x1>;
+ wlf,micd-timeout = <10>;
+ wlf,micd-force-micbias;
+
wlf,gpio-defaults = <
0x00000000 /* AIF1TXLRCLK */
0xffffffff
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index b3337ee..1cc6aa0 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -603,6 +603,28 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
arizona_of_get_named_gpio(arizona, "wlf,reset", true, &pdata->reset);
arizona_of_get_named_gpio(arizona, "wlf,ldoena", true, &pdata->ldoena);

+ arizona_of_read_u32(arizona, "wlf,micd-detect-debounce", false,
+ &pdata->micd_detect_debounce);
+
+ arizona_of_get_named_gpio(arizona, "wlf,micd-pol-gpio", false,
+ &pdata->micd_pol_gpio);
+
+ arizona_of_read_u32(arizona, "wlf,micd-bias-start-time", false,
+ &pdata->micd_bias_start_time);
+
+ arizona_of_read_u32(arizona, "wlf,micd-rate", false,
+ &pdata->micd_rate);
+
+ arizona_of_read_u32(arizona, "wlf,micd-dbtime", false,
+ &pdata->micd_dbtime);
+
+ arizona_of_read_u32(arizona, "wlf,micd-timeout", false,
+ &pdata->micd_timeout);
+
+ pdata->micd_force_micbias =
+ of_property_read_bool(arizona->dev->of_node,
+ "wlf,micd-force-micbias");
+
arizona_of_get_gpio_defaults(arizona, "wlf,gpio-defaults");

arizona_of_read_u32_array(arizona, "wlf,max-channels-clocked",
--
1.7.2.5


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