platform/x86: x86-android-tablets: Add audio codec info for Lenovo Yoga Tab 3 Pro...

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@redhat.com>
Link: https://lore.kernel.org/r/20231104205828.63139-3-hdegoede@redhat.com

diff --git a/drivers/platform/x86/x86-android-tablets/lenovo.c b/drivers/platform/x86/x86-android-tablets/lenovo.c
index c1e68211283fbf3aea5303d6b3600a6414dab9d6..0bc6a74b8bebfaa0b6f3cbc4a01c496ac2863258 100644 (file)
--- 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>
@@ -659,6 +661,88 @@ 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_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] = { /* MICBIAS2 */
+                       .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;
@@ -702,14 +786,28 @@ 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,
 };