summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/drivers/intel/mipi_camera/camera.c121
-rw-r--r--src/drivers/intel/mipi_camera/chip.h6
2 files changed, 124 insertions, 3 deletions
diff --git a/src/drivers/intel/mipi_camera/camera.c b/src/drivers/intel/mipi_camera/camera.c
index 7c0774dd7a..03e5ab65db 100644
--- a/src/drivers/intel/mipi_camera/camera.c
+++ b/src/drivers/intel/mipi_camera/camera.c
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
+#include <stdlib.h>
#include <acpi/acpi.h>
#include <acpi/acpi_device.h>
#include <acpi/acpigen.h>
@@ -13,6 +14,82 @@
#define SENSOR_NAME_UUID "822ace8f-2814-4174-a56b-5f029fe079ee"
#define SENSOR_TYPE_UUID "26257549-9271-4ca4-bb43-c4899d5a4881"
#define DEFAULT_ENDPOINT 0
+#define DEFAULT_REMOTE_NAME "\\_SB.PCI0.CIO2"
+#define CIO2_PCI_DEV 0x14
+#define CIO2_PCI_FN 0x3
+
+/*
+ * This implementation assumes there is only 1 endpoint at each end of every data port. It also
+ * assumes there are no clock lanes. It also assumes that any VCM or NVM for a CAM is on the
+ * same I2C bus as the CAM.
+ */
+
+/*
+ * Adds settings for a CIO2 device (typically at "\_SB.PCI0.CIO2"). A _DSD is added that
+ * specifies a child table for each port (e.g., PRT0 for "port0" and PRT1 for "port1"). Each
+ * PRTx table specifies a table for each endpoint (though only 1 endpoint is supported by this
+ * implementation so the table only has an "endpoint0" that points to a EPx0 table). The EPx0
+ * table primarily describes the # of lanes in "data-lines" and specifies the name of the other
+ * side in "remote-endpoint" (the name is usually of the form "\_SB.PCI0.I2Cx.CAM0" for the
+ * first port/cam and "\_SB.PCI0.I2Cx.CAM1" if there's a second port/cam).
+ */
+static void camera_fill_cio2(const struct device *dev)
+{
+ struct drivers_intel_mipi_camera_config *config = dev->chip_info;
+ struct acpi_dp *dsd = acpi_dp_new_table("_DSD");
+ char *ep_table_name[MAX_PORT_ENTRIES] = {NULL};
+ char *port_table_name[MAX_PORT_ENTRIES] = {NULL};
+ char *port_name[MAX_PORT_ENTRIES] = {NULL};
+ unsigned int i, j;
+ char name[BUS_PATH_MAX];
+ struct acpi_dp *ep_table = NULL;
+ struct acpi_dp *port_table = NULL;
+ struct acpi_dp *remote = NULL;
+ struct acpi_dp *lanes = NULL;
+
+ for (i = 0; i < config->cio2_num_ports && i < MAX_PORT_ENTRIES; ++i) {
+ snprintf(name, sizeof(name), "EP%u0", i);
+ ep_table_name[i] = strdup(name);
+ ep_table = acpi_dp_new_table(ep_table_name[i]);
+ acpi_dp_add_integer(ep_table, "endpoint", 0);
+ acpi_dp_add_integer(ep_table, "clock-lanes", 0);
+
+ if (config->cio2_lanes_used[i] > 0) {
+ lanes = acpi_dp_new_table("data-lanes");
+
+ for (j = 1; j <= config->cio2_lanes_used[i] &&
+ j <= MAX_PORT_ENTRIES; ++j)
+ acpi_dp_add_integer(lanes, NULL, j);
+ acpi_dp_add_array(ep_table, lanes);
+ }
+
+ if (config->cio2_lane_endpoint[i]) {
+ remote = acpi_dp_new_table("remote-endpoint");
+ acpi_dp_add_reference(remote, NULL, config->cio2_lane_endpoint[i]);
+ acpi_dp_add_integer(remote, NULL, 0);
+ acpi_dp_add_integer(remote, NULL, 0);
+ acpi_dp_add_array(ep_table, remote);
+ }
+
+ snprintf(name, sizeof(name), "PRT%u", i);
+ port_table_name[i] = strdup(name);
+ port_table = acpi_dp_new_table(port_table_name[i]);
+ acpi_dp_add_integer(port_table, "port", config->cio2_prt[i]);
+ acpi_dp_add_child(port_table, "endpoint0", ep_table);
+
+ snprintf(name, sizeof(name), "port%u", i);
+ port_name[i] = strdup(name);
+ acpi_dp_add_child(dsd, port_name[i], port_table);
+ }
+
+ acpi_dp_write(dsd);
+
+ for (i = 0; i < config->cio2_num_ports; ++i) {
+ free(ep_table_name[i]);
+ free(port_table_name[i]);
+ free(port_name[i]);
+ }
+}
static void apply_pld_defaults(struct drivers_intel_mipi_camera_config *config)
{
@@ -144,11 +221,17 @@ static void camera_generate_dsm(const struct device *dev)
acpigen_pop_len(); /* Method _DSM */
}
-static void camera_fill_sensor_defaults(struct drivers_intel_mipi_camera_config *config)
+static void camera_fill_ssdb_defaults(struct drivers_intel_mipi_camera_config *config)
{
+ struct device *cio2 = pcidev_on_root(CIO2_PCI_DEV, CIO2_PCI_FN);
+ struct drivers_intel_mipi_camera_config *cio2_config;
+
if (config->disable_ssdb_defaults)
return;
+ if (!config->ssdb.bdf_value)
+ config->ssdb.bdf_value = PCI_DEVFN(CIO2_PCI_DEV, CIO2_PCI_FN);
+
if (!config->ssdb.platform)
config->ssdb.platform = PLATFORM_SKC;
@@ -163,6 +246,24 @@ static void camera_fill_sensor_defaults(struct drivers_intel_mipi_camera_config
if (!config->ssdb.mclk_speed)
config->ssdb.mclk_speed = CLK_FREQ_19_2MHZ;
+
+ if (!config->ssdb.lanes_used) {
+ cio2_config = cio2 ? cio2->chip_info : NULL;
+
+ if (!cio2_config) {
+ printk(BIOS_ERR, "Failed to get CIO2 config\n");
+ } else if (cio2_config->device_type != INTEL_ACPI_CAMERA_CIO2) {
+ printk(BIOS_ERR, "Device type isn't CIO2: %u\n",
+ (u32)cio2_config->device_type);
+ } else if (config->ssdb.link_used >= cio2_config->cio2_num_ports) {
+ printk(BIOS_ERR, "%u exceeds CIO2's %u links\n",
+ (u32)config->ssdb.link_used,
+ (u32)cio2_config->cio2_num_ports);
+ } else {
+ config->ssdb.lanes_used =
+ cio2_config->cio2_lanes_used[config->ssdb.link_used];
+ }
+ }
}
/*
@@ -193,10 +294,12 @@ static void camera_fill_sensor(const struct device *dev)
struct acpi_dp *remote = NULL;
const char *vcm_name = NULL;
struct acpi_dp *lens_focus = NULL;
+ const char *remote_name;
+ struct device *cio2 = pcidev_on_root(CIO2_PCI_DEV, CIO2_PCI_FN);
camera_generate_pld(dev);
- camera_fill_sensor_defaults(config);
+ camera_fill_ssdb_defaults(config);
/* _DSM */
camera_generate_dsm(dev);
@@ -223,7 +326,16 @@ static void camera_fill_sensor(const struct device *dev)
remote = acpi_dp_new_table("remote-endpoint");
- acpi_dp_add_reference(remote, NULL, config->remote_name);
+ if (config->remote_name) {
+ remote_name = config->remote_name;
+ } else {
+ if (cio2)
+ remote_name = acpi_device_path(cio2);
+ else
+ remote_name = DEFAULT_REMOTE_NAME;
+ }
+
+ acpi_dp_add_reference(remote, NULL, remote_name);
acpi_dp_add_integer(remote, NULL, config->ssdb.link_used);
acpi_dp_add_integer(remote, NULL, DEFAULT_ENDPOINT);
acpi_dp_add_array(ep00, remote);
@@ -408,6 +520,9 @@ static void write_camera_device_common(const struct device *dev)
}
switch (config->device_type) {
+ case INTEL_ACPI_CAMERA_CIO2:
+ camera_fill_cio2(dev);
+ break;
case INTEL_ACPI_CAMERA_SENSOR:
camera_fill_sensor(dev);
break;
diff --git a/src/drivers/intel/mipi_camera/chip.h b/src/drivers/intel/mipi_camera/chip.h
index 32b11c1656..92d3eac6cf 100644
--- a/src/drivers/intel/mipi_camera/chip.h
+++ b/src/drivers/intel/mipi_camera/chip.h
@@ -131,6 +131,12 @@ struct drivers_intel_mipi_camera_config {
const char *chip_name;
unsigned int acpi_uid;
+ /* Settings specific to CIO2 device */
+ uint32_t cio2_num_ports;
+ uint32_t cio2_lanes_used[MAX_PORT_ENTRIES];
+ const char *cio2_lane_endpoint[MAX_PORT_ENTRIES];
+ uint32_t cio2_prt[MAX_PORT_ENTRIES];
+
/* Settings specific to camera sensor */
bool disable_ssdb_defaults;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 02:56:17 +0000