The SPI attached WM5102 codec on the Lenovo Yoga Tab 3 Pro YT3-X90F
is not described in the ACPI tables.
Add info to instantiate the SPI device for the codec manually.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
.../platform/x86/x86-android-tablets/lenovo.c | 99 +++++++++++++++++++
1 file changed, 99 insertions(+)
diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c
index 585f10a57810..d5d815940ce1 100644
--- a/drivers/platform/x86/x86-android-tablets/lenovo.c
+++ b/drivers/platform/x86/x86-android-tablets/lenovo.c
@@ -12,6 +12,8 @@
#include <linux/efi.h>
#include <linux/gpio/machine.h>
+#include <linux/mfd/arizona/pdata.h>
+#include <linux/mfd/arizona/registers.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pinctrl/machine.h>
@@ -677,6 +679,89 @@ static const struct x86_i2c_client_info lenovo_yt3_i2c_clients[] __initconst = {
}
};
+/*
+ * The AOSP 3.5 mm Headset: Accessory Specification gives the following values:
+ * Function A Play/Pause: 0 ohm
+ * Function D Voice assistant: 135 ohm
+ * Function B Volume Up 240 ohm
+ * Function C Volume Down 470 ohm
+ * Minimum Mic DC resistance 1000 ohm
+ * Minimum Ear speaker impedance 16 ohm
+ * Note the first max value below must be less then the min. speaker impedance,
+ * to allow CTIA/OMTP detection to work. The other max values are the closest
+ * value from extcon-arizona.c:arizona_micd_levels halfway 2 button resistances.
+ */
+static const struct arizona_micd_range arizona_micd_aosp_ranges[] = {
+ { .max = 11, .key = KEY_PLAYPAUSE },
+ { .max = 186, .key = KEY_VOICECOMMAND },
+ { .max = 348, .key = KEY_VOLUMEUP },
+ { .max = 752, .key = KEY_VOLUMEDOWN },
+};
+
+/* YT3 WM5102 arizona_micd_config comes from Android kernel sources */
+static struct arizona_micd_config lenovo_yt3_wm5102_micd_config[]={
+ { 0, 1, 0 },
+ { ARIZONA_ACCDET_SRC, 2, 1 },
+};
+
+static struct arizona_pdata lenovo_yt3_wm5102_pdata = {
+ .irq_flags = IRQF_TRIGGER_LOW,
+ .micd_detect_debounce = 200,
+ .micd_ranges = arizona_micd_aosp_ranges,
+ .num_micd_ranges = ARRAY_SIZE(arizona_micd_aosp_ranges),
+ .hpdet_channel = ARIZONA_ACCDET_MODE_HPL,
+
+ /* Below settings come from Android kernel sources */
+ .micd_bias_start_time = 1,
+ .micd_rate = 6,
+ .micd_force_micbias = 1,
+ .micd_configs = lenovo_yt3_wm5102_micd_config,
+ .num_micd_configs = ARRAY_SIZE(lenovo_yt3_wm5102_micd_config),
+ .micbias={
+ [0]={ /*MICBIAS1*/
+ .mV =2800 ,
+ .ext_cap=1,
+ .discharge =1 ,
+ .soft_start =0,
+ .bypass =0,
+ },
+ [1]={ /*MICBIAS2*/
+ .mV =2800 ,
+ .ext_cap=1,
+ .discharge =1 ,
+ .soft_start =0,
+ .bypass =0,
+ },
+ [2]={ /*MICBIAS3*/
+ .mV =2800 ,
+ .ext_cap=1,
+ .discharge =1 ,
+ .soft_start =0,
+ .bypass =0,
+ },
+ },
+};
+
+static const struct x86_spi_dev_info lenovo_yt3_spi_devs[] __initconst = {
+ {
+ /* WM5102 codec */
+ .board_info = {
+ .modalias = "wm5102",
+ .platform_data = &lenovo_yt3_wm5102_pdata,
+ .max_speed_hz = 5000000,
+ },
+ .ctrl_path = "\\_SB_.PCI0.SPI1",
+ .irq_data = {
+ .type = X86_ACPI_IRQ_TYPE_GPIOINT,
+ .chip = "INT33FF:00",
+ .index = 91,
+ .trigger = ACPI_LEVEL_SENSITIVE,
+ .polarity = ACPI_ACTIVE_LOW,
+ .con_id = "wm5102_irq",
+ },
+ }
+};
+
static int __init lenovo_yt3_init(void)
{
int ret;
@@ -720,14 +805,28 @@ static struct gpiod_lookup_table lenovo_yt3_hideep_gpios = {
},
};
+static struct gpiod_lookup_table lenovo_yt3_wm5102_gpios = {
+ .dev_id = "spi1.0",
+ .table = {
+ GPIO_LOOKUP("INT33FF:00", 75, "wlf,spkvdd-ena", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("INT33FF:00", 81, "wlf,ldoena", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("INT33FF:00", 82, "reset", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("arizona", 2, "wlf,micd-pol", GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
+
static struct gpiod_lookup_table * const lenovo_yt3_gpios[] = {
&lenovo_yt3_hideep_gpios,
+ &lenovo_yt3_wm5102_gpios,
NULL
};
const struct x86_dev_info lenovo_yt3_info __initconst = {
.i2c_client_info = lenovo_yt3_i2c_clients,
.i2c_client_count = ARRAY_SIZE(lenovo_yt3_i2c_clients),
+ .spi_dev_info = lenovo_yt3_spi_devs,
+ .spi_dev_count = ARRAY_SIZE(lenovo_yt3_spi_devs),
.gpiod_lookup_tables = lenovo_yt3_gpios,
.init = lenovo_yt3_init,
};
--
2.41.0
