Merge tag 'platform-drivers-x86-serial-multi-instantiate-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 into for-next
This branch contains 5.17-rc1 + the SPI tree's spi-acpi-helpers tag +
the other patches from the "[PATCH v6 0/9] Support Spi in
i2c-multi-instantiate driver" series.
diff --git a/MAINTAINERS b/MAINTAINERS
index ea3e6c9..f51ff0a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -388,11 +388,11 @@
S: Maintained
F: drivers/acpi/arm64
-ACPI I2C MULTI INSTANTIATE DRIVER
+ACPI SERIAL MULTI INSTANTIATE DRIVER
M: Hans de Goede <hdegoede@redhat.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
-F: drivers/platform/x86/i2c-multi-instantiate.c
+F: drivers/platform/x86/serial-multi-instantiate.c
ACPI PCC(Platform Communication Channel) MAILBOX DRIVER
M: Sudeep Holla <sudeep.holla@arm.com>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 1331756..4463c2e 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1734,17 +1734,21 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
bool is_serial_bus_slave = false;
static const struct acpi_device_id ignore_serial_bus_ids[] = {
/*
- * These devices have multiple I2cSerialBus resources and an i2c-client
- * must be instantiated for each, each with its own i2c_device_id.
- * Normally we only instantiate an i2c-client for the first resource,
- * using the ACPI HID as id. These special cases are handled by the
- * drivers/platform/x86/i2c-multi-instantiate.c driver, which knows
- * which i2c_device_id to use for each resource.
+ * These devices have multiple SerialBus resources and a client
+ * device must be instantiated for each of them, each with
+ * its own device id.
+ * Normally we only instantiate one client device for the first
+ * resource, using the ACPI HID as id. These special cases are handled
+ * by the drivers/platform/x86/serial-multi-instantiate.c driver, which
+ * knows which client device id to use for each resource.
*/
{"BSG1160", },
{"BSG2150", },
+ {"CSC3551", },
{"INT33FE", },
{"INT3515", },
+ /* Non-conforming _HID for Cirrus Logic already released */
+ {"CLSA0100", },
/*
* HIDs of device with an UartSerialBusV2 resource for which userspace
* expects a regular tty cdev to be created (instead of the in kernel
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 24deeeb..8d1eec2 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -990,16 +990,16 @@
If you have a Topstar laptop, say Y or M here.
-config I2C_MULTI_INSTANTIATE
- tristate "I2C multi instantiate pseudo device driver"
- depends on I2C && ACPI
+config SERIAL_MULTI_INSTANTIATE
+ tristate "Serial bus multi instantiate pseudo device driver"
+ depends on I2C && SPI && ACPI
help
- Some ACPI-based systems list multiple i2c-devices in a single ACPI
- firmware-node. This driver will instantiate separate i2c-clients
+ Some ACPI-based systems list multiple devices in a single ACPI
+ firmware-node. This driver will instantiate separate clients
for each device in the firmware-node.
To compile this driver as a module, choose M here: the module
- will be called i2c-multi-instantiate.
+ will be called serial-multi-instantiate.
config MLX_PLATFORM
tristate "Mellanox Technologies platform support"
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index c12a9b0..9527088 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -110,7 +110,7 @@
# Platform drivers
obj-$(CONFIG_FW_ATTR_CLASS) += firmware_attributes_class.o
-obj-$(CONFIG_I2C_MULTI_INSTANTIATE) += i2c-multi-instantiate.o
+obj-$(CONFIG_SERIAL_MULTI_INSTANTIATE) += serial-multi-instantiate.o
obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o
obj-$(CONFIG_TOUCHSCREEN_DMI) += touchscreen_dmi.o
obj-$(CONFIG_WIRELESS_HOTKEY) += wireless-hotkey.o
diff --git a/drivers/platform/x86/i2c-multi-instantiate.c b/drivers/platform/x86/i2c-multi-instantiate.c
deleted file mode 100644
index 4956a1d..0000000
--- a/drivers/platform/x86/i2c-multi-instantiate.c
+++ /dev/null
@@ -1,174 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * I2C multi-instantiate driver, pseudo driver to instantiate multiple
- * i2c-clients from a single fwnode.
- *
- * Copyright 2018 Hans de Goede <hdegoede@redhat.com>
- */
-
-#include <linux/acpi.h>
-#include <linux/bits.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/property.h>
-#include <linux/types.h>
-
-#define IRQ_RESOURCE_TYPE GENMASK(1, 0)
-#define IRQ_RESOURCE_NONE 0
-#define IRQ_RESOURCE_GPIO 1
-#define IRQ_RESOURCE_APIC 2
-
-struct i2c_inst_data {
- const char *type;
- unsigned int flags;
- int irq_idx;
-};
-
-struct i2c_multi_inst_data {
- int num_clients;
- struct i2c_client *clients[];
-};
-
-static int i2c_multi_inst_probe(struct platform_device *pdev)
-{
- struct i2c_multi_inst_data *multi;
- const struct i2c_inst_data *inst_data;
- struct i2c_board_info board_info = {};
- struct device *dev = &pdev->dev;
- struct acpi_device *adev;
- char name[32];
- int i, ret;
-
- inst_data = device_get_match_data(dev);
- if (!inst_data) {
- dev_err(dev, "Error ACPI match data is missing\n");
- return -ENODEV;
- }
-
- adev = ACPI_COMPANION(dev);
-
- /* Count number of clients to instantiate */
- ret = i2c_acpi_client_count(adev);
- if (ret < 0)
- return ret;
-
- multi = devm_kmalloc(dev, struct_size(multi, clients, ret), GFP_KERNEL);
- if (!multi)
- return -ENOMEM;
-
- multi->num_clients = ret;
-
- for (i = 0; i < multi->num_clients && inst_data[i].type; i++) {
- memset(&board_info, 0, sizeof(board_info));
- strlcpy(board_info.type, inst_data[i].type, I2C_NAME_SIZE);
- snprintf(name, sizeof(name), "%s-%s.%d", dev_name(dev),
- inst_data[i].type, i);
- board_info.dev_name = name;
- switch (inst_data[i].flags & IRQ_RESOURCE_TYPE) {
- case IRQ_RESOURCE_GPIO:
- ret = acpi_dev_gpio_irq_get(adev, inst_data[i].irq_idx);
- if (ret < 0) {
- dev_err(dev, "Error requesting irq at index %d: %d\n",
- inst_data[i].irq_idx, ret);
- goto error;
- }
- board_info.irq = ret;
- break;
- case IRQ_RESOURCE_APIC:
- ret = platform_get_irq(pdev, inst_data[i].irq_idx);
- if (ret < 0) {
- dev_dbg(dev, "Error requesting irq at index %d: %d\n",
- inst_data[i].irq_idx, ret);
- goto error;
- }
- board_info.irq = ret;
- break;
- default:
- board_info.irq = 0;
- break;
- }
- multi->clients[i] = i2c_acpi_new_device(dev, i, &board_info);
- if (IS_ERR(multi->clients[i])) {
- ret = dev_err_probe(dev, PTR_ERR(multi->clients[i]),
- "Error creating i2c-client, idx %d\n", i);
- goto error;
- }
- }
- if (i < multi->num_clients) {
- dev_err(dev, "Error finding driver, idx %d\n", i);
- ret = -ENODEV;
- goto error;
- }
-
- platform_set_drvdata(pdev, multi);
- return 0;
-
-error:
- while (--i >= 0)
- i2c_unregister_device(multi->clients[i]);
-
- return ret;
-}
-
-static int i2c_multi_inst_remove(struct platform_device *pdev)
-{
- struct i2c_multi_inst_data *multi = platform_get_drvdata(pdev);
- int i;
-
- for (i = 0; i < multi->num_clients; i++)
- i2c_unregister_device(multi->clients[i]);
-
- return 0;
-}
-
-static const struct i2c_inst_data bsg1160_data[] = {
- { "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
- { "bmc150_magn" },
- { "bmg160" },
- {}
-};
-
-static const struct i2c_inst_data bsg2150_data[] = {
- { "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
- { "bmc150_magn" },
- /* The resources describe a 3th client, but it is not really there. */
- { "bsg2150_dummy_dev" },
- {}
-};
-
-static const struct i2c_inst_data int3515_data[] = {
- { "tps6598x", IRQ_RESOURCE_APIC, 0 },
- { "tps6598x", IRQ_RESOURCE_APIC, 1 },
- { "tps6598x", IRQ_RESOURCE_APIC, 2 },
- { "tps6598x", IRQ_RESOURCE_APIC, 3 },
- {}
-};
-
-/*
- * Note new device-ids must also be added to i2c_multi_instantiate_ids in
- * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
- */
-static const struct acpi_device_id i2c_multi_inst_acpi_ids[] = {
- { "BSG1160", (unsigned long)bsg1160_data },
- { "BSG2150", (unsigned long)bsg2150_data },
- { "INT3515", (unsigned long)int3515_data },
- { }
-};
-MODULE_DEVICE_TABLE(acpi, i2c_multi_inst_acpi_ids);
-
-static struct platform_driver i2c_multi_inst_driver = {
- .driver = {
- .name = "I2C multi instantiate pseudo device driver",
- .acpi_match_table = i2c_multi_inst_acpi_ids,
- },
- .probe = i2c_multi_inst_probe,
- .remove = i2c_multi_inst_remove,
-};
-module_platform_driver(i2c_multi_inst_driver);
-
-MODULE_DESCRIPTION("I2C multi instantiate pseudo device driver");
-MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/serial-multi-instantiate.c b/drivers/platform/x86/serial-multi-instantiate.c
new file mode 100644
index 0000000..1e8063b
--- /dev/null
+++ b/drivers/platform/x86/serial-multi-instantiate.c
@@ -0,0 +1,348 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Serial multi-instantiate driver, pseudo driver to instantiate multiple
+ * client devices from a single fwnode.
+ *
+ * Copyright 2018 Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <linux/types.h>
+
+#define IRQ_RESOURCE_TYPE GENMASK(1, 0)
+#define IRQ_RESOURCE_NONE 0
+#define IRQ_RESOURCE_GPIO 1
+#define IRQ_RESOURCE_APIC 2
+
+enum smi_bus_type {
+ SMI_I2C,
+ SMI_SPI,
+ SMI_AUTO_DETECT,
+};
+
+struct smi_instance {
+ const char *type;
+ unsigned int flags;
+ int irq_idx;
+};
+
+struct smi_node {
+ enum smi_bus_type bus_type;
+ struct smi_instance instances[];
+};
+
+struct smi {
+ int i2c_num;
+ int spi_num;
+ struct i2c_client **i2c_devs;
+ struct spi_device **spi_devs;
+};
+
+static int smi_get_irq(struct platform_device *pdev, struct acpi_device *adev,
+ const struct smi_instance *inst)
+{
+ int ret;
+
+ switch (inst->flags & IRQ_RESOURCE_TYPE) {
+ case IRQ_RESOURCE_GPIO:
+ ret = acpi_dev_gpio_irq_get(adev, inst->irq_idx);
+ break;
+ case IRQ_RESOURCE_APIC:
+ ret = platform_get_irq(pdev, inst->irq_idx);
+ break;
+ default:
+ return 0;
+ }
+
+ if (ret < 0)
+ dev_err_probe(&pdev->dev, ret, "Error requesting irq at index %d: %d\n",
+ inst->irq_idx, ret);
+
+ return ret;
+}
+
+static void smi_devs_unregister(struct smi *smi)
+{
+ while (smi->i2c_num > 0)
+ i2c_unregister_device(smi->i2c_devs[--smi->i2c_num]);
+
+ while (smi->spi_num > 0)
+ spi_unregister_device(smi->spi_devs[--smi->spi_num]);
+}
+
+/**
+ * smi_spi_probe - Instantiate multiple SPI devices from inst array
+ * @pdev: Platform device
+ * @adev: ACPI device
+ * @smi: Internal struct for Serial multi instantiate driver
+ * @inst_array: Array of instances to probe
+ *
+ * Returns the number of SPI devices instantiate, Zero if none is found or a negative error code.
+ */
+static int smi_spi_probe(struct platform_device *pdev, struct acpi_device *adev, struct smi *smi,
+ const struct smi_instance *inst_array)
+{
+ struct device *dev = &pdev->dev;
+ struct spi_controller *ctlr;
+ struct spi_device *spi_dev;
+ char name[50];
+ int i, ret, count;
+
+ ret = acpi_spi_count_resources(adev);
+ if (ret < 0)
+ return ret;
+ else if (!ret)
+ return -ENODEV;
+
+ count = ret;
+
+ smi->spi_devs = devm_kcalloc(dev, count, sizeof(*smi->spi_devs), GFP_KERNEL);
+ if (!smi->spi_devs)
+ return -ENOMEM;
+
+ for (i = 0; i < count && inst_array[i].type; i++) {
+
+ spi_dev = acpi_spi_device_alloc(NULL, adev, i);
+ if (IS_ERR(spi_dev)) {
+ ret = PTR_ERR(spi_dev);
+ dev_err_probe(dev, ret, "failed to allocate SPI device %s from ACPI: %d\n",
+ dev_name(&adev->dev), ret);
+ goto error;
+ }
+
+ ctlr = spi_dev->controller;
+
+ strscpy(spi_dev->modalias, inst_array[i].type, sizeof(spi_dev->modalias));
+
+ ret = smi_get_irq(pdev, adev, &inst_array[i]);
+ if (ret < 0) {
+ spi_dev_put(spi_dev);
+ goto error;
+ }
+ spi_dev->irq = ret;
+
+ snprintf(name, sizeof(name), "%s-%s-%s.%d", dev_name(&ctlr->dev), dev_name(dev),
+ inst_array[i].type, i);
+ spi_dev->dev.init_name = name;
+
+ ret = spi_add_device(spi_dev);
+ if (ret) {
+ dev_err_probe(&ctlr->dev, ret,
+ "failed to add SPI device %s from ACPI: %d\n",
+ dev_name(&adev->dev), ret);
+ spi_dev_put(spi_dev);
+ goto error;
+ }
+
+ dev_dbg(dev, "SPI device %s using chip select %u", name, spi_dev->chip_select);
+
+ smi->spi_devs[i] = spi_dev;
+ smi->spi_num++;
+ }
+
+ if (smi->spi_num < count) {
+ dev_dbg(dev, "Error finding driver, idx %d\n", i);
+ ret = -ENODEV;
+ goto error;
+ }
+
+ dev_info(dev, "Instantiated %d SPI devices.\n", smi->spi_num);
+
+ return 0;
+error:
+ smi_devs_unregister(smi);
+
+ return ret;
+}
+
+/**
+ * smi_i2c_probe - Instantiate multiple I2C devices from inst array
+ * @pdev: Platform device
+ * @adev: ACPI device
+ * @smi: Internal struct for Serial multi instantiate driver
+ * @inst_array: Array of instances to probe
+ *
+ * Returns the number of I2C devices instantiate, Zero if none is found or a negative error code.
+ */
+static int smi_i2c_probe(struct platform_device *pdev, struct acpi_device *adev, struct smi *smi,
+ const struct smi_instance *inst_array)
+{
+ struct i2c_board_info board_info = {};
+ struct device *dev = &pdev->dev;
+ char name[32];
+ int i, ret, count;
+
+ ret = i2c_acpi_client_count(adev);
+ if (ret < 0)
+ return ret;
+ else if (!ret)
+ return -ENODEV;
+
+ count = ret;
+
+ smi->i2c_devs = devm_kcalloc(dev, count, sizeof(*smi->i2c_devs), GFP_KERNEL);
+ if (!smi->i2c_devs)
+ return -ENOMEM;
+
+ for (i = 0; i < count && inst_array[i].type; i++) {
+ memset(&board_info, 0, sizeof(board_info));
+ strscpy(board_info.type, inst_array[i].type, I2C_NAME_SIZE);
+ snprintf(name, sizeof(name), "%s-%s.%d", dev_name(dev), inst_array[i].type, i);
+ board_info.dev_name = name;
+
+ ret = smi_get_irq(pdev, adev, &inst_array[i]);
+ if (ret < 0)
+ goto error;
+ board_info.irq = ret;
+
+ smi->i2c_devs[i] = i2c_acpi_new_device(dev, i, &board_info);
+ if (IS_ERR(smi->i2c_devs[i])) {
+ ret = dev_err_probe(dev, PTR_ERR(smi->i2c_devs[i]),
+ "Error creating i2c-client, idx %d\n", i);
+ goto error;
+ }
+ smi->i2c_num++;
+ }
+ if (smi->i2c_num < count) {
+ dev_dbg(dev, "Error finding driver, idx %d\n", i);
+ ret = -ENODEV;
+ goto error;
+ }
+
+ dev_info(dev, "Instantiated %d I2C devices.\n", smi->i2c_num);
+
+ return 0;
+error:
+ smi_devs_unregister(smi);
+
+ return ret;
+}
+
+static int smi_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ const struct smi_node *node;
+ struct acpi_device *adev;
+ struct smi *smi;
+
+ adev = ACPI_COMPANION(dev);
+ if (!adev)
+ return -ENODEV;
+
+ node = device_get_match_data(dev);
+ if (!node) {
+ dev_dbg(dev, "Error ACPI match data is missing\n");
+ return -ENODEV;
+ }
+
+ smi = devm_kzalloc(dev, sizeof(*smi), GFP_KERNEL);
+ if (!smi)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, smi);
+
+ switch (node->bus_type) {
+ case SMI_I2C:
+ return smi_i2c_probe(pdev, adev, smi, node->instances);
+ case SMI_SPI:
+ return smi_spi_probe(pdev, adev, smi, node->instances);
+ case SMI_AUTO_DETECT:
+ if (i2c_acpi_client_count(adev) > 0)
+ return smi_i2c_probe(pdev, adev, smi, node->instances);
+ else
+ return smi_spi_probe(pdev, adev, smi, node->instances);
+ default:
+ return -EINVAL;
+ }
+
+ return 0; /* never reached */
+}
+
+static int smi_remove(struct platform_device *pdev)
+{
+ struct smi *smi = platform_get_drvdata(pdev);
+
+ smi_devs_unregister(smi);
+
+ return 0;
+}
+
+static const struct smi_node bsg1160_data = {
+ .instances = {
+ { "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
+ { "bmc150_magn" },
+ { "bmg160" },
+ {}
+ },
+ .bus_type = SMI_I2C,
+};
+
+static const struct smi_node bsg2150_data = {
+ .instances = {
+ { "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
+ { "bmc150_magn" },
+ /* The resources describe a 3th client, but it is not really there. */
+ { "bsg2150_dummy_dev" },
+ {}
+ },
+ .bus_type = SMI_I2C,
+};
+
+static const struct smi_node int3515_data = {
+ .instances = {
+ { "tps6598x", IRQ_RESOURCE_APIC, 0 },
+ { "tps6598x", IRQ_RESOURCE_APIC, 1 },
+ { "tps6598x", IRQ_RESOURCE_APIC, 2 },
+ { "tps6598x", IRQ_RESOURCE_APIC, 3 },
+ {}
+ },
+ .bus_type = SMI_I2C,
+};
+
+static const struct smi_node cs35l41_hda = {
+ .instances = {
+ { "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+ { "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+ { "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+ { "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
+ {}
+ },
+ .bus_type = SMI_AUTO_DETECT,
+};
+
+/*
+ * Note new device-ids must also be added to ignore_serial_bus_ids in
+ * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
+ */
+static const struct acpi_device_id smi_acpi_ids[] = {
+ { "BSG1160", (unsigned long)&bsg1160_data },
+ { "BSG2150", (unsigned long)&bsg2150_data },
+ { "INT3515", (unsigned long)&int3515_data },
+ { "CSC3551", (unsigned long)&cs35l41_hda },
+ /* Non-conforming _HID for Cirrus Logic already released */
+ { "CLSA0100", (unsigned long)&cs35l41_hda },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, smi_acpi_ids);
+
+static struct platform_driver smi_driver = {
+ .driver = {
+ .name = "Serial bus multi instantiate pseudo device driver",
+ .acpi_match_table = smi_acpi_ids,
+ },
+ .probe = smi_probe,
+ .remove = smi_remove,
+};
+module_platform_driver(smi_driver);
+
+MODULE_DESCRIPTION("Serial multi instantiate pseudo device driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 4599b12..ec9f2ed 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -532,7 +532,7 @@ static DEFINE_MUTEX(board_lock);
*
* Return: a pointer to the new device, or NULL.
*/
-static struct spi_device *spi_alloc_device(struct spi_controller *ctlr)
+struct spi_device *spi_alloc_device(struct spi_controller *ctlr)
{
struct spi_device *spi;
@@ -557,6 +557,7 @@ static struct spi_device *spi_alloc_device(struct spi_controller *ctlr)
device_initialize(&spi->dev);
return spi;
}
+EXPORT_SYMBOL_GPL(spi_alloc_device);
static void spi_dev_set_name(struct spi_device *spi)
{
@@ -652,7 +653,7 @@ static int __spi_add_device(struct spi_device *spi)
*
* Return: 0 on success; negative errno on failure
*/
-static int spi_add_device(struct spi_device *spi)
+int spi_add_device(struct spi_device *spi)
{
struct spi_controller *ctlr = spi->controller;
struct device *dev = ctlr->dev.parent;
@@ -673,6 +674,7 @@ static int spi_add_device(struct spi_device *spi)
mutex_unlock(&ctlr->add_lock);
return status;
}
+EXPORT_SYMBOL_GPL(spi_add_device);
static int spi_add_device_locked(struct spi_device *spi)
{
@@ -2318,8 +2320,50 @@ struct acpi_spi_lookup {
int irq;
u8 bits_per_word;
u8 chip_select;
+ int n;
+ int index;
};
+static int acpi_spi_count(struct acpi_resource *ares, void *data)
+{
+ struct acpi_resource_spi_serialbus *sb;
+ int *count = data;
+
+ if (ares->type != ACPI_RESOURCE_TYPE_SERIAL_BUS)
+ return 1;
+
+ sb = &ares->data.spi_serial_bus;
+ if (sb->type != ACPI_RESOURCE_SERIAL_TYPE_SPI)
+ return 1;
+
+ *count = *count + 1;
+
+ return 1;
+}
+
+/**
+ * acpi_spi_count_resources - Count the number of SpiSerialBus resources
+ * @adev: ACPI device
+ *
+ * Returns the number of SpiSerialBus resources in the ACPI-device's
+ * resource-list; or a negative error code.
+ */
+int acpi_spi_count_resources(struct acpi_device *adev)
+{
+ LIST_HEAD(r);
+ int count = 0;
+ int ret;
+
+ ret = acpi_dev_get_resources(adev, &r, acpi_spi_count, &count);
+ if (ret < 0)
+ return ret;
+
+ acpi_dev_free_resource_list(&r);
+
+ return count;
+}
+EXPORT_SYMBOL_GPL(acpi_spi_count_resources);
+
static void acpi_spi_parse_apple_properties(struct acpi_device *dev,
struct acpi_spi_lookup *lookup)
{
@@ -2349,6 +2393,8 @@ static void acpi_spi_parse_apple_properties(struct acpi_device *dev,
lookup->mode |= SPI_CPHA;
}
+static struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev);
+
static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
{
struct acpi_spi_lookup *lookup = data;
@@ -2362,14 +2408,35 @@ static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
sb = &ares->data.spi_serial_bus;
if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_SPI) {
+ if (lookup->index != -1 && lookup->n++ != lookup->index)
+ return 1;
+
+ if (lookup->index == -1 && !ctlr)
+ return -ENODEV;
+
status = acpi_get_handle(NULL,
sb->resource_source.string_ptr,
&parent_handle);
- if (ACPI_FAILURE(status) ||
- ACPI_HANDLE(ctlr->dev.parent) != parent_handle)
+ if (ACPI_FAILURE(status))
return -ENODEV;
+ if (ctlr) {
+ if (ACPI_HANDLE(ctlr->dev.parent) != parent_handle)
+ return -ENODEV;
+ } else {
+ struct acpi_device *adev;
+
+ if (acpi_bus_get_device(parent_handle, &adev))
+ return -ENODEV;
+
+ ctlr = acpi_spi_find_controller_by_adev(adev);
+ if (!ctlr)
+ return -ENODEV;
+
+ lookup->ctlr = ctlr;
+ }
+
/*
* ACPI DeviceSelection numbering is handled by the
* host controller driver in Windows and can vary
@@ -2408,8 +2475,25 @@ static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
return 1;
}
-static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
- struct acpi_device *adev)
+/**
+ * acpi_spi_device_alloc - Allocate a spi device, and fill it in with ACPI information
+ * @ctlr: controller to which the spi device belongs
+ * @adev: ACPI Device for the spi device
+ * @index: Index of the spi resource inside the ACPI Node
+ *
+ * This should be used to allocate a new spi device from and ACPI Node.
+ * The caller is responsible for calling spi_add_device to register the spi device.
+ *
+ * If ctlr is set to NULL, the Controller for the spi device will be looked up
+ * using the resource.
+ * If index is set to -1, index is not used.
+ * Note: If index is -1, ctlr must be set.
+ *
+ * Return: a pointer to the new device, or ERR_PTR on error.
+ */
+struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
+ struct acpi_device *adev,
+ int index)
{
acpi_handle parent_handle = NULL;
struct list_head resource_list;
@@ -2417,12 +2501,13 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
struct spi_device *spi;
int ret;
- if (acpi_bus_get_status(adev) || !adev->status.present ||
- acpi_device_enumerated(adev))
- return AE_OK;
+ if (!ctlr && index == -1)
+ return ERR_PTR(-EINVAL);
lookup.ctlr = ctlr;
lookup.irq = -1;
+ lookup.index = index;
+ lookup.n = 0;
INIT_LIST_HEAD(&resource_list);
ret = acpi_dev_get_resources(adev, &resource_list,
@@ -2431,26 +2516,25 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
if (ret < 0)
/* found SPI in _CRS but it points to another controller */
- return AE_OK;
+ return ERR_PTR(-ENODEV);
if (!lookup.max_speed_hz &&
ACPI_SUCCESS(acpi_get_parent(adev->handle, &parent_handle)) &&
- ACPI_HANDLE(ctlr->dev.parent) == parent_handle) {
+ ACPI_HANDLE(lookup.ctlr->dev.parent) == parent_handle) {
/* Apple does not use _CRS but nested devices for SPI slaves */
acpi_spi_parse_apple_properties(adev, &lookup);
}
if (!lookup.max_speed_hz)
- return AE_OK;
+ return ERR_PTR(-ENODEV);
- spi = spi_alloc_device(ctlr);
+ spi = spi_alloc_device(lookup.ctlr);
if (!spi) {
- dev_err(&ctlr->dev, "failed to allocate SPI device for %s\n",
+ dev_err(&lookup.ctlr->dev, "failed to allocate SPI device for %s\n",
dev_name(&adev->dev));
- return AE_NO_MEMORY;
+ return ERR_PTR(-ENOMEM);
}
-
ACPI_COMPANION_SET(&spi->dev, adev);
spi->max_speed_hz = lookup.max_speed_hz;
spi->mode |= lookup.mode;
@@ -2458,6 +2542,27 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
spi->bits_per_word = lookup.bits_per_word;
spi->chip_select = lookup.chip_select;
+ return spi;
+}
+EXPORT_SYMBOL_GPL(acpi_spi_device_alloc);
+
+static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
+ struct acpi_device *adev)
+{
+ struct spi_device *spi;
+
+ if (acpi_bus_get_status(adev) || !adev->status.present ||
+ acpi_device_enumerated(adev))
+ return AE_OK;
+
+ spi = acpi_spi_device_alloc(ctlr, adev, -1);
+ if (IS_ERR(spi)) {
+ if (PTR_ERR(spi) == -ENOMEM)
+ return AE_NO_MEMORY;
+ else
+ return AE_OK;
+ }
+
acpi_set_modalias(adev, acpi_device_hid(adev), spi->modalias,
sizeof(spi->modalias));
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 7ab3fed..394b424 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -16,6 +16,7 @@
#include <linux/gpio/consumer.h>
#include <uapi/linux/spi/spi.h>
+#include <linux/acpi.h>
struct dma_chan;
struct software_node;
@@ -759,6 +760,13 @@ extern int devm_spi_register_controller(struct device *dev,
struct spi_controller *ctlr);
extern void spi_unregister_controller(struct spi_controller *ctlr);
+#if IS_ENABLED(CONFIG_ACPI)
+extern struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
+ struct acpi_device *adev,
+ int index);
+int acpi_spi_count_resources(struct acpi_device *adev);
+#endif
+
/*
* SPI resource management while processing a SPI message
*/
@@ -1452,8 +1460,20 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n)
* use spi_new_device() to describe each device. You can also call
* spi_unregister_device() to start making that device vanish, but
* normally that would be handled by spi_unregister_controller().
+ *
+ * You can also use spi_alloc_device() and spi_add_device() to use a two
+ * stage registration sequence for each spi_device. This gives the caller
+ * some more control over the spi_device structure before it is registered,
+ * but requires that caller to initialize fields that would otherwise
+ * be defined using the board info.
*/
extern struct spi_device *
+spi_alloc_device(struct spi_controller *ctlr);
+
+extern int
+spi_add_device(struct spi_device *spi);
+
+extern struct spi_device *
spi_new_device(struct spi_controller *, struct spi_board_info *);
extern void spi_unregister_device(struct spi_device *spi);
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 668274e..db0fce4 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6611,6 +6611,16 @@ static void cs35l41_fixup_i2c_two(struct hda_codec *cdc, const struct hda_fixup
cs35l41_generic_fixup(cdc, action, "i2c", "CSC3551", 2);
}
+static void cs35l41_fixup_spi_two(struct hda_codec *codec, const struct hda_fixup *fix, int action)
+{
+ cs35l41_generic_fixup(codec, action, "spi0", "CSC3551", 2);
+}
+
+static void cs35l41_fixup_spi_four(struct hda_codec *codec, const struct hda_fixup *fix, int action)
+{
+ cs35l41_generic_fixup(codec, action, "spi0", "CSC3551", 4);
+}
+
static void alc287_legion_16achg6_playback_hook(struct hda_pcm_stream *hinfo, struct hda_codec *cdc,
struct snd_pcm_substream *sub, int action)
{
@@ -6948,6 +6958,9 @@ enum {
ALC285_FIXUP_LEGION_Y9000X_AUTOMUTE,
ALC287_FIXUP_LEGION_16ACHG6,
ALC287_FIXUP_CS35L41_I2C_2,
+ ALC245_FIXUP_CS35L41_SPI_2,
+ ALC245_FIXUP_CS35L41_SPI_4,
+ ALC245_FIXUP_CS35L41_SPI_4_HP_GPIO_LED,
ALC285_FIXUP_HP_SPEAKERS_MICMUTE_LED,
};
@@ -8699,6 +8712,20 @@ static const struct hda_fixup alc269_fixups[] = {
.type = HDA_FIXUP_FUNC,
.v.func = cs35l41_fixup_i2c_two,
},
+ [ALC245_FIXUP_CS35L41_SPI_2] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = cs35l41_fixup_spi_two,
+ },
+ [ALC245_FIXUP_CS35L41_SPI_4] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = cs35l41_fixup_spi_four,
+ },
+ [ALC245_FIXUP_CS35L41_SPI_4_HP_GPIO_LED] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = alc245_fixup_hp_gpio_led,
+ .chained = true,
+ .chain_id = ALC245_FIXUP_CS35L41_SPI_4,
+ },
[ALC285_FIXUP_HP_SPEAKERS_MICMUTE_LED] = {
.type = HDA_FIXUP_VERBS,
.v.verbs = (const struct hda_verb[]) {
@@ -8926,7 +8953,21 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
SND_PCI_QUIRK(0x103c, 0x8896, "HP EliteBook 855 G8 Notebook PC", ALC285_FIXUP_HP_MUTE_LED),
SND_PCI_QUIRK(0x103c, 0x8898, "HP EliteBook 845 G8 Notebook PC", ALC285_FIXUP_HP_LIMIT_INT_MIC_BOOST),
SND_PCI_QUIRK(0x103c, 0x88d0, "HP Pavilion 15-eh1xxx (mainboard 88D0)", ALC287_FIXUP_HP_GPIO_LED),
- SND_PCI_QUIRK(0x103c, 0x89c3, "HP", ALC285_FIXUP_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x896e, "HP EliteBook x360 830 G9", ALC245_FIXUP_CS35L41_SPI_2),
+ SND_PCI_QUIRK(0x103c, 0x8971, "HP EliteBook 830 G9", ALC245_FIXUP_CS35L41_SPI_2),
+ SND_PCI_QUIRK(0x103c, 0x8972, "HP EliteBook 840 G9", ALC245_FIXUP_CS35L41_SPI_2),
+ SND_PCI_QUIRK(0x103c, 0x8973, "HP EliteBook 860 G9", ALC245_FIXUP_CS35L41_SPI_2),
+ SND_PCI_QUIRK(0x103c, 0x8974, "HP EliteBook 840 Aero G9", ALC245_FIXUP_CS35L41_SPI_2),
+ SND_PCI_QUIRK(0x103c, 0x8975, "HP EliteBook x360 840 Aero G9", ALC245_FIXUP_CS35L41_SPI_2),
+ SND_PCI_QUIRK(0x103c, 0x8981, "HP Elite Dragonfly G3", ALC245_FIXUP_CS35L41_SPI_4),
+ SND_PCI_QUIRK(0x103c, 0x898e, "HP EliteBook 835 G9", ALC287_FIXUP_CS35L41_I2C_2),
+ SND_PCI_QUIRK(0x103c, 0x898f, "HP EliteBook 835 G9", ALC287_FIXUP_CS35L41_I2C_2),
+ SND_PCI_QUIRK(0x103c, 0x8991, "HP EliteBook 845 G9", ALC287_FIXUP_CS35L41_I2C_2),
+ SND_PCI_QUIRK(0x103c, 0x8992, "HP EliteBook 845 G9", ALC287_FIXUP_CS35L41_I2C_2),
+ SND_PCI_QUIRK(0x103c, 0x8994, "HP EliteBook 855 G9", ALC287_FIXUP_CS35L41_I2C_2),
+ SND_PCI_QUIRK(0x103c, 0x8995, "HP EliteBook 855 G9", ALC287_FIXUP_CS35L41_I2C_2),
+ SND_PCI_QUIRK(0x103c, 0x89c3, "Zbook Studio G9", ALC245_FIXUP_CS35L41_SPI_4_HP_GPIO_LED),
+ SND_PCI_QUIRK(0x103c, 0x89c6, "Zbook Fury 17 G9", ALC245_FIXUP_CS35L41_SPI_2),
SND_PCI_QUIRK(0x103c, 0x89ca, "HP", ALC236_FIXUP_HP_MUTE_LED_MICMUTE_VREF),
SND_PCI_QUIRK(0x1043, 0x103e, "ASUS X540SA", ALC256_FIXUP_ASUS_MIC),
SND_PCI_QUIRK(0x1043, 0x103f, "ASUS TX300", ALC282_FIXUP_ASUS_TX300),
