forked from Minki/linux
ASoC: ts3a227e control debounce times
Merge series from Astrid Rost <astrid.rost@axis.com>: Add debounce support to the ts3a227e driver.
This commit is contained in:
Mark Brown
commit
843e10b394
94
Documentation/devicetree/bindings/sound/ti,ts3a227e.yaml
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94
Documentation/devicetree/bindings/sound/ti,ts3a227e.yaml
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@ -0,0 +1,94 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/ti,ts3a227e.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Texas Instruments TS3A227E
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Autonomous Audio Accessory Detection and Configuration Switch
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maintainers:
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- Dylan Reid <dgreid@chromium.org>
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description: |
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The TS3A227E detect headsets of 3-ring and 4-ring standards and
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switches automatically to route the microphone correctly. It also
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handles key press detection in accordance with the Android audio
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headset specification v1.0.
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properties:
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compatible:
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enum:
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- ti,ts3a227e
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reg:
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const: 0x3b
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interrupts:
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maxItems: 1
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ti,micbias:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Intended MICBIAS voltage (datasheet section 9.6.7).
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enum:
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- 0 # 2.1 V
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- 1 # 2.2 V
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- 2 # 2.3 V
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- 3 # 2.4 V
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- 4 # 2.5 V
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- 5 # 2.6 V
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- 6 # 2.7 V
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- 7 # 2.8 V
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default: 1
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ti,debounce-release-ms:
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description: key release debounce time in ms (datasheet section 9.6.7).
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enum:
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- 0
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- 20
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default: 20
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ti,debounce-press-ms:
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description: key press debounce time in ms (datasheet section 9.6.7).
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enum:
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- 2
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- 40
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- 80
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- 120
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default: 80
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ti,debounce-insertion-ms:
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description: headset insertion debounce time in ms (datasheet section 9.6.5).
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enum:
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- 2
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- 30
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- 60
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- 90
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- 120
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- 150
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- 1000
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- 2000
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default: 90
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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codec: audio-controller@3b {
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compatible = "ti,ts3a227e";
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reg = <0x3b>;
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interrupt-parent = <&gpio1>;
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interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
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};
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};
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...
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@ -1,30 +0,0 @@
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Texas Instruments TS3A227E
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Autonomous Audio Accessory Detection and Configuration Switch
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The TS3A227E detect headsets of 3-ring and 4-ring standards and
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switches automatically to route the microphone correctly. It also
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handles key press detection in accordance with the Android audio
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headset specification v1.0.
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Required properties:
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- compatible: Should contain "ti,ts3a227e".
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- reg: The i2c address. Should contain <0x3b>.
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- interrupts: Interrupt number for /INT pin from the 227e
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Optional properies:
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- ti,micbias: Intended MICBIAS voltage (datasheet section 9.6.7).
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Select 0/1/2/3/4/5/6/7 to specify MICBIAS voltage
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2.1V/2.2V/2.3V/2.4V/2.5V/2.6V/2.7V/2.8V
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Default value is "1" (2.2V).
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Examples:
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i2c {
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ts3a227e@3b {
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compatible = "ti,ts3a227e";
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reg = <0x3b>;
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interrupt-parent = <&gpio>;
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interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
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};
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};
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@ -78,12 +78,20 @@ static const int ts3a227e_buttons[] = {
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#define ADC_COMPLETE_INT_DISABLE 0x04
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#define INTB_DISABLE 0x08
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/* TS3A227E_REG_SETTING_1 0x4 */
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#define DEBOUNCE_INSERTION_SETTING_SFT (0)
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#define DEBOUNCE_INSERTION_SETTING_MASK (0x7 << DEBOUNCE_PRESS_SETTING_SFT)
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/* TS3A227E_REG_SETTING_2 0x05 */
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#define KP_ENABLE 0x04
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/* TS3A227E_REG_SETTING_3 0x06 */
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#define MICBIAS_SETTING_SFT (3)
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#define MICBIAS_SETTING_SFT 3
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#define MICBIAS_SETTING_MASK (0x7 << MICBIAS_SETTING_SFT)
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#define DEBOUNCE_RELEASE_SETTING_SFT 2
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#define DEBOUNCE_RELEASE_SETTING_MASK (0x1 << DEBOUNCE_RELEASE_SETTING_SFT)
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#define DEBOUNCE_PRESS_SETTING_SFT 0
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#define DEBOUNCE_PRESS_SETTING_MASK (0x3 << DEBOUNCE_PRESS_SETTING_SFT)
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/* TS3A227E_REG_ACCESSORY_STATUS 0x0b */
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#define TYPE_3_POLE 0x01
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@ -136,7 +144,7 @@ static bool ts3a227e_volatile_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case TS3A227E_REG_INTERRUPT ... TS3A227E_REG_INTERRUPT_DISABLE:
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case TS3A227E_REG_SETTING_2:
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case TS3A227E_REG_SETTING_1 ... TS3A227E_REG_SETTING_2:
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case TS3A227E_REG_SWITCH_STATUS_1 ... TS3A227E_REG_ADC_OUTPUT:
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return true;
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default:
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@ -269,14 +277,55 @@ static const struct regmap_config ts3a227e_regmap_config = {
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static int ts3a227e_parse_device_property(struct ts3a227e *ts3a227e,
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struct device *dev)
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{
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u32 micbias;
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u32 value;
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u32 value_ms;
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u32 setting3_value = 0;
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u32 setting3_mask = 0;
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int err;
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err = device_property_read_u32(dev, "ti,micbias", &micbias);
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err = device_property_read_u32(dev, "ti,micbias", &value);
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if (!err) {
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setting3_mask = MICBIAS_SETTING_MASK;
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setting3_value = (value << MICBIAS_SETTING_SFT) &
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MICBIAS_SETTING_MASK;
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}
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err = device_property_read_u32(dev, "ti,debounce-release-ms",
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&value_ms);
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if (!err) {
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value = (value_ms > 10);
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setting3_mask |= DEBOUNCE_RELEASE_SETTING_MASK;
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setting3_value |= (value << DEBOUNCE_RELEASE_SETTING_SFT) &
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DEBOUNCE_RELEASE_SETTING_MASK;
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}
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err = device_property_read_u32(dev, "ti,debounce-press-ms", &value_ms);
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if (!err) {
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value = (value_ms + 20) / 40;
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if (value > 3)
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value = 3;
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setting3_mask |= DEBOUNCE_PRESS_SETTING_MASK;
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setting3_value |= (value << DEBOUNCE_PRESS_SETTING_SFT) &
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DEBOUNCE_PRESS_SETTING_MASK;
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}
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if (setting3_mask)
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regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_SETTING_3,
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MICBIAS_SETTING_MASK,
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(micbias & 0x07) << MICBIAS_SETTING_SFT);
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setting3_mask, setting3_value);
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err = device_property_read_u32(dev, "ti,debounce-insertion-ms",
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&value_ms);
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if (!err) {
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if (value_ms < 165)
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value = (value_ms + 15) / 30;
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else if (value_ms < 1500)
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value = 6;
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else
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value = 7;
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regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_SETTING_1,
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DEBOUNCE_INSERTION_SETTING_MASK,
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(value << DEBOUNCE_INSERTION_SETTING_SFT) &
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DEBOUNCE_INSERTION_SETTING_MASK);
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}
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return 0;
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