GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drivers/intel/mipi_camera: SSDT changes to add DSM 

This change updates mipi_camera driver to add DSM section to SSDT.

Change-Id: Ic60e972b6aebad171a7b77fe0d99781693adfb20
Signed-off-by: Sugnan Prabhu S <sugnan.prabhu.s@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42468
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Matt Delco 2020-06-17 12:49:43 +05:30 committed by Patrick Georgi
parent 1245b1e098
commit 964033f7d2
1 changed files with 85 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

85
src/drivers/intel/mipi_camera/camera.c
View File

@ -14,6 +14,88 @@
#define SENSOR_TYPE_UUID "26257549-9271-4ca4-bb43-c4899d5a4881"
#define DEFAULT_ENDPOINT 0
static uint32_t address_for_dev_type(const struct device *dev, uint8_t dev_type)
{
struct drivers_intel_mipi_camera_config *config = dev->chip_info;
uint16_t i2c_bus = dev->bus ? dev->bus->secondary : 0xFFFF;
uint16_t i2c_addr;
switch (dev_type) {
case DEV_TYPE_SENSOR:
i2c_addr = dev->path.i2c.device;
break;
case DEV_TYPE_VCM:
i2c_addr = config->vcm_address;
break;
case DEV_TYPE_ROM:
i2c_addr = config->rom_address;
break;
default:
return 0;
}
return (((uint32_t)i2c_bus) << 24 | ((uint32_t)i2c_addr) << 8 | dev_type);
}
static void camera_generate_dsm(const struct device *dev)
{
struct drivers_intel_mipi_camera_config *config = dev->chip_info;
int local1_ret = 1 + (config->ssdb.vcm_type ? 1 : 0) + (config->ssdb.rom_type ? 1 : 0);
int next_local1 = 1;
/* Method (_DSM, 4, NotSerialized) */
acpigen_write_method("_DSM", 4);
/* ToBuffer (Arg0, Local0) */
acpigen_write_to_buffer(ARG0_OP, LOCAL0_OP);
/* If (LEqual (Local0, ToUUID(uuid))) */
acpigen_write_if();
acpigen_emit_byte(LEQUAL_OP);
acpigen_emit_byte(LOCAL0_OP);
acpigen_write_uuid(SENSOR_NAME_UUID);
acpigen_write_return_string(config->sensor_name ? config->sensor_name : "UNKNOWN");
acpigen_pop_len(); /* If */
/* If (LEqual (Local0, ToUUID(uuid))) */
acpigen_write_if();
acpigen_emit_byte(LEQUAL_OP);
acpigen_emit_byte(LOCAL0_OP);
acpigen_write_uuid(SENSOR_TYPE_UUID);
/* ToInteger (Arg2, Local1) */
acpigen_write_to_integer(ARG2_OP, LOCAL1_OP);
/* If (LEqual (Local1, 1)) */
acpigen_write_if_lequal_op_int(LOCAL1_OP, next_local1++);
acpigen_write_return_integer(local1_ret);
acpigen_pop_len(); /* If Arg2=1 */
/* If (LEqual (Local1, 2)) */
acpigen_write_if_lequal_op_int(LOCAL1_OP, next_local1++);
acpigen_write_return_integer(address_for_dev_type(dev, DEV_TYPE_SENSOR));
acpigen_pop_len(); /* If Arg2=2 */
if (config->ssdb.vcm_type) {
/* If (LEqual (Local1, 3)) */
acpigen_write_if_lequal_op_int(LOCAL1_OP, next_local1++);
acpigen_write_return_integer(address_for_dev_type(dev, DEV_TYPE_VCM));
acpigen_pop_len(); /* If Arg2=3 */
}
if (config->ssdb.rom_type) {
/* If (LEqual (Local1, 3 or 4)) */
acpigen_write_if_lequal_op_int(LOCAL1_OP, next_local1);
acpigen_write_return_integer(address_for_dev_type(dev, DEV_TYPE_ROM));
acpigen_pop_len(); /* If Arg2=3 or 4 */
}
acpigen_pop_len(); /* If uuid */
/* Return (Buffer (One) { 0x0 }) */
acpigen_write_return_singleton_buffer(0x0);
acpigen_pop_len(); /* Method _DSM */
}
static void camera_fill_sensor_defaults(struct drivers_intel_mipi_camera_config *config)
{
if (config->disable_ssdb_defaults)
@ -66,6 +148,9 @@ static void camera_fill_sensor(const struct device *dev)
camera_fill_sensor_defaults(config);
/* _DSM */
camera_generate_dsm(dev);
ep00 = acpi_dp_new_table("EP00");
acpi_dp_add_integer(ep00, "endpoint", DEFAULT_ENDPOINT);
acpi_dp_add_integer(ep00, "clock-lanes", 0);