//
// Author: Stefan Binding <sbinding@opensource.cirrus.com>
+#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
#include <linux/string.h>
#include "cs35l41_hda_property.h"
+#include <linux/spi/spi.h>
+
+#define MAX_AMPS 4
+
+struct cs35l41_config {
+ const char *ssid;
+ enum {
+ SPI,
+ I2C
+ } bus;
+ int num_amps;
+ enum {
+ INTERNAL,
+ EXTERNAL
+ } boost_type;
+ u8 channel[MAX_AMPS];
+ int reset_gpio_index; /* -1 if no reset gpio */
+ int spkid_gpio_index; /* -1 if no spkid gpio */
+ int cs_gpio_index; /* -1 if no cs gpio, or cs-gpios already exists, max num amps == 2 */
+ int boost_ind_nanohenry; /* Required if boost_type == Internal */
+ int boost_peak_milliamp; /* Required if boost_type == Internal */
+ int boost_cap_microfarad; /* Required if boost_type == Internal */
+};
+
+static const struct cs35l41_config cs35l41_config_table[] = {
+/*
+ * Device 103C89C6 does have _DSD, however it is setup to use the wrong boost type.
+ * We can override the _DSD to correct the boost type here.
+ * Since this laptop has valid ACPI, we do not need to handle cs-gpios, since that already exists
+ * in the ACPI. The Reset GPIO is also valid, so we can use the Reset defined in _DSD.
+ */
+ { "103C89C6", SPI, 2, INTERNAL, { CS35L41_RIGHT, CS35L41_LEFT, 0, 0 }, -1, -1, -1, 1000, 4500, 24 },
+ {}
+};
+
+static int cs35l41_add_gpios(struct cs35l41_hda *cs35l41, struct device *physdev, int reset_gpio,
+ int spkid_gpio, int cs_gpio_index, int num_amps)
+{
+ struct acpi_gpio_mapping *gpio_mapping;
+ struct acpi_gpio_params *reset_gpio_params;
+ struct acpi_gpio_params *spkid_gpio_params;
+ struct acpi_gpio_params *cs_gpio_params;
+ unsigned int num_entries = 0;
+ unsigned int reset_index, spkid_index, csgpio_index;
+ int i;
+
+ /*
+ * GPIO Mapping only needs to be done once, since it would be available for subsequent amps
+ */
+ if (cs35l41->dacpi->driver_gpios)
+ return 0;
+
+ if (reset_gpio >= 0) {
+ reset_index = num_entries;
+ num_entries++;
+ }
+
+ if (spkid_gpio >= 0) {
+ spkid_index = num_entries;
+ num_entries++;
+ }
+
+ if ((cs_gpio_index >= 0) && (num_amps == 2)) {
+ csgpio_index = num_entries;
+ num_entries++;
+ }
+
+ if (!num_entries)
+ return 0;
+
+ /* must include termination entry */
+ num_entries++;
+
+ gpio_mapping = devm_kcalloc(physdev, num_entries, sizeof(struct acpi_gpio_mapping),
+ GFP_KERNEL);
+
+ if (!gpio_mapping)
+ goto err;
+
+ if (reset_gpio >= 0) {
+ gpio_mapping[reset_index].name = "reset-gpios";
+ reset_gpio_params = devm_kcalloc(physdev, num_amps, sizeof(struct acpi_gpio_params),
+ GFP_KERNEL);
+ if (!reset_gpio_params)
+ goto err;
+
+ for (i = 0; i < num_amps; i++)
+ reset_gpio_params[i].crs_entry_index = reset_gpio;
+
+ gpio_mapping[reset_index].data = reset_gpio_params;
+ gpio_mapping[reset_index].size = num_amps;
+ }
+
+ if (spkid_gpio >= 0) {
+ gpio_mapping[spkid_index].name = "spk-id-gpios";
+ spkid_gpio_params = devm_kcalloc(physdev, num_amps, sizeof(struct acpi_gpio_params),
+ GFP_KERNEL);
+ if (!spkid_gpio_params)
+ goto err;
+
+ for (i = 0; i < num_amps; i++)
+ spkid_gpio_params[i].crs_entry_index = spkid_gpio;
+
+ gpio_mapping[spkid_index].data = spkid_gpio_params;
+ gpio_mapping[spkid_index].size = num_amps;
+ }
+
+ if ((cs_gpio_index >= 0) && (num_amps == 2)) {
+ gpio_mapping[csgpio_index].name = "cs-gpios";
+ /* only one GPIO CS is supported without using _DSD, obtained using index 0 */
+ cs_gpio_params = devm_kzalloc(physdev, sizeof(struct acpi_gpio_params), GFP_KERNEL);
+ if (!cs_gpio_params)
+ goto err;
+
+ cs_gpio_params->crs_entry_index = cs_gpio_index;
+
+ gpio_mapping[csgpio_index].data = cs_gpio_params;
+ gpio_mapping[csgpio_index].size = 1;
+ }
+
+ return devm_acpi_dev_add_driver_gpios(physdev, gpio_mapping);
+err:
+ devm_kfree(physdev, gpio_mapping);
+ devm_kfree(physdev, reset_gpio_params);
+ devm_kfree(physdev, spkid_gpio_params);
+ devm_kfree(physdev, cs_gpio_params);
+ return -ENOMEM;
+}
+
+static int generic_dsd_config(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
+ const char *hid)
+{
+ struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
+ const struct cs35l41_config *cfg;
+ struct gpio_desc *cs_gpiod;
+ struct spi_device *spi;
+ bool dsd_found;
+ int ret;
+
+ for (cfg = cs35l41_config_table; cfg->ssid; cfg++) {
+ if (!strcasecmp(cfg->ssid, cs35l41->acpi_subsystem_id))
+ break;
+ }
+
+ if (!cfg->ssid)
+ return -ENOENT;
+
+ if (!cs35l41->dacpi || cs35l41->dacpi != ACPI_COMPANION(physdev)) {
+ dev_err(cs35l41->dev, "ACPI Device does not match, cannot override _DSD.\n");
+ return -ENODEV;
+ }
+
+ dev_info(cs35l41->dev, "Adding DSD properties for %s\n", cs35l41->acpi_subsystem_id);
+
+ dsd_found = acpi_dev_has_props(cs35l41->dacpi);
+
+ if (!dsd_found) {
+ ret = cs35l41_add_gpios(cs35l41, physdev, cfg->reset_gpio_index,
+ cfg->spkid_gpio_index, cfg->cs_gpio_index,
+ cfg->num_amps);
+ if (ret) {
+ dev_err(cs35l41->dev, "Error adding GPIO mapping: %d\n", ret);
+ return ret;
+ }
+ } else if (cfg->reset_gpio_index >= 0 || cfg->spkid_gpio_index >= 0) {
+ dev_warn(cs35l41->dev, "Cannot add Reset/Speaker ID/SPI CS GPIO Mapping, "
+ "_DSD already exists.\n");
+ }
+
+ if (cfg->bus == SPI) {
+ cs35l41->index = id;
+ /*
+ * Manually set the Chip Select for the second amp <cs_gpio_index> in the node.
+ * This is only supported for systems with 2 amps, since we cannot expand the
+ * default number of chip selects without using cs-gpios
+ * The CS GPIO must be set high prior to communicating with the first amp (which
+ * uses a native chip select), to ensure the second amp does not clash with the
+ * first.
+ */
+ if (cfg->cs_gpio_index >= 0) {
+ spi = to_spi_device(cs35l41->dev);
+
+ if (cfg->num_amps != 2) {
+ dev_warn(cs35l41->dev,
+ "Cannot update SPI CS, Number of Amps (%d) != 2\n",
+ cfg->num_amps);
+ } else if (dsd_found) {
+ dev_warn(cs35l41->dev,
+ "Cannot update SPI CS, _DSD already exists.\n");
+ } else {
+ /*
+ * This is obtained using driver_gpios, since only one GPIO for CS
+ * exists, this can be obtained using index 0.
+ */
+ cs_gpiod = gpiod_get_index(physdev, "cs", 0, GPIOD_OUT_LOW);
+ if (IS_ERR(cs_gpiod)) {
+ dev_err(cs35l41->dev,
+ "Unable to get Chip Select GPIO descriptor\n");
+ return PTR_ERR(cs_gpiod);
+ }
+ if (id == 1) {
+ spi_set_csgpiod(spi, 0, cs_gpiod);
+ cs35l41->cs_gpio = cs_gpiod;
+ } else {
+ gpiod_set_value_cansleep(cs_gpiod, true);
+ gpiod_put(cs_gpiod);
+ }
+ spi_setup(spi);
+ }
+ }
+ } else {
+ if (cfg->num_amps > 2)
+ /*
+ * i2c addresses for 3/4 amps are used in order: 0x40, 0x41, 0x42, 0x43,
+ * subtracting 0x40 would give zero-based index
+ */
+ cs35l41->index = id - 0x40;
+ else
+ /* i2c addr 0x40 for first amp (always), 0x41/0x42 for 2nd amp */
+ cs35l41->index = id == 0x40 ? 0 : 1;
+ }
+
+ if (cfg->num_amps == 3)
+ /* 3 amps means a center channel, so no duplicate channels */
+ cs35l41->channel_index = 0;
+ else
+ /*
+ * if 4 amps, there are duplicate channels, so they need different indexes
+ * if 2 amps, no duplicate channels, channel_index would be 0
+ */
+ cs35l41->channel_index = cs35l41->index / 2;
+
+ cs35l41->reset_gpio = fwnode_gpiod_get_index(acpi_fwnode_handle(cs35l41->dacpi), "reset",
+ cs35l41->index, GPIOD_OUT_LOW,
+ "cs35l41-reset");
+ cs35l41->speaker_id = cs35l41_get_speaker_id(physdev, cs35l41->index, cfg->num_amps, -1);
+
+ hw_cfg->spk_pos = cfg->channel[cs35l41->index];
+
+ if (cfg->boost_type == INTERNAL) {
+ hw_cfg->bst_type = CS35L41_INT_BOOST;
+ hw_cfg->bst_ind = cfg->boost_ind_nanohenry;
+ hw_cfg->bst_ipk = cfg->boost_peak_milliamp;
+ hw_cfg->bst_cap = cfg->boost_cap_microfarad;
+ hw_cfg->gpio1.func = CS35L41_NOT_USED;
+ hw_cfg->gpio1.valid = true;
+ } else {
+ hw_cfg->bst_type = CS35L41_EXT_BOOST;
+ hw_cfg->bst_ind = -1;
+ hw_cfg->bst_ipk = -1;
+ hw_cfg->bst_cap = -1;
+ hw_cfg->gpio1.func = CS35l41_VSPK_SWITCH;
+ hw_cfg->gpio1.valid = true;
+ }
+
+ hw_cfg->gpio2.func = CS35L41_INTERRUPT;
+ hw_cfg->gpio2.valid = true;
+ hw_cfg->valid = true;
+
+ return 0;
+}
/*
* Device CLSA010(0/1) doesn't have _DSD so a gpiod_get by the label reset won't work.
return 0;
}
-/*
- * Device 103C89C6 does have _DSD, however it is setup to use the wrong boost type.
- * We can override the _DSD to correct the boost type here.
- * Since this laptop has valid ACPI, we do not need to handle cs-gpios, since that already exists
- * in the ACPI.
- */
-static int hp_vision_acpi_fix(struct cs35l41_hda *cs35l41, struct device *physdev, int id,
- const char *hid)
-{
- struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg;
-
- dev_info(cs35l41->dev, "Adding DSD properties for %s\n", cs35l41->acpi_subsystem_id);
-
- cs35l41->index = id;
- cs35l41->channel_index = 0;
-
- /*
- * This system has _DSD, it just contains an error, so we can still get the reset using
- * the "reset" label.
- */
- cs35l41->reset_gpio = fwnode_gpiod_get_index(acpi_fwnode_handle(cs35l41->dacpi), "reset",
- cs35l41->index, GPIOD_OUT_LOW,
- "cs35l41-reset");
- cs35l41->speaker_id = -ENOENT;
- hw_cfg->spk_pos = cs35l41->index ? 0 : 1; // right:left
- hw_cfg->gpio1.func = CS35L41_NOT_USED;
- hw_cfg->gpio1.valid = true;
- hw_cfg->gpio2.func = CS35L41_INTERRUPT;
- hw_cfg->gpio2.valid = true;
- hw_cfg->bst_type = CS35L41_INT_BOOST;
- hw_cfg->bst_ind = 1000;
- hw_cfg->bst_ipk = 4500;
- hw_cfg->bst_cap = 24;
- hw_cfg->valid = true;
-
- return 0;
-}
-
struct cs35l41_prop_model {
const char *hid;
const char *ssid;
static const struct cs35l41_prop_model cs35l41_prop_model_table[] = {
{ "CLSA0100", NULL, lenovo_legion_no_acpi },
{ "CLSA0101", NULL, lenovo_legion_no_acpi },
- { "CSC3551", "103C89C6", hp_vision_acpi_fix },
+ { "CSC3551", "103C89C6", generic_dsd_config },
{}
};
if (!strcmp(model->hid, hid) &&
(!model->ssid ||
(cs35l41->acpi_subsystem_id &&
- !strcmp(model->ssid, cs35l41->acpi_subsystem_id))))
+ !strcasecmp(model->ssid, cs35l41->acpi_subsystem_id))))
return model->add_prop(cs35l41, physdev, id, hid);
}
projects / linux-block.git / commitdiff