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drivers/intel/mipi_camera: Add camera power resource to SSDT

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This change adds support function to parse entries in the devicetree to
generate PowerResource entries for the MIPI camera.

Change-Id: I31e198b50acf2c64035aff9cb054fbe3602dd83e
Signed-off-by: Sugnan Prabhu S <sugnan.prabhu.s@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41624
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:
Sugnan Prabhu S
2020-05-21 20:41:03 +05:30
committed by Patrick Georgi
parent 4f77f61d2d
commit b087a940a2
2 changed files with 159 additions and 0 deletions
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98
src/drivers/intel/mipi_camera/camera.c
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@ -17,6 +17,7 @@
#define DEFAULT_REMOTE_NAME "\\_SB.PCI0.CIO2"
#define CIO2_PCI_DEV 0x14
#define CIO2_PCI_FN 0x3
#define POWER_RESOURCE_NAME "PRIC"
/*
* This implementation assumes there is only 1 endpoint at each end of every data port. It also
@ -435,6 +436,58 @@ static void camera_fill_vcm(const struct device *dev)
acpi_dp_write(dsd);
}
static void fill_power_res_sequence(struct drivers_intel_mipi_camera_config *config,
struct operation_seq *seq)
{
unsigned int i;
uint8_t index;
uint8_t gpio_num;
for (i = 0; i < seq->ops_cnt; i++) {
switch (seq->ops[i].type) {
case IMGCLK:
index = seq->ops[i].index;
if (seq->ops[i].action == ENABLE) {
acpigen_emit_namestring("MCON");
acpigen_write_byte(config->clk_panel.clks[index].clknum);
acpigen_write_byte(config->clk_panel.clks[index].freq);
} else if (seq->ops[i].action == DISABLE) {
acpigen_emit_namestring("MCOF");
acpigen_write_byte(config->clk_panel.clks[index].clknum);
} else {
acpigen_write_debug_string("Unsupported clock action");
printk(BIOS_ERR, "Unsupported clock action: %x\n",
seq->ops[i].action);
printk(BIOS_ERR, "OS camera driver will likely not work");
}
break;
case GPIO:
index = seq->ops[i].index;
gpio_num = config->gpio_panel.gpio[index].gpio_num;
if (seq->ops[i].action == ENABLE) {
acpigen_soc_set_tx_gpio(gpio_num);
} else if (seq->ops[i].action == DISABLE) {
acpigen_soc_clear_tx_gpio(gpio_num);
} else {
acpigen_write_debug_string("Unsupported GPIO action");
printk(BIOS_ERR, "Unsupported GPIO action: %x\n",
seq->ops[i].action);
printk(BIOS_ERR, "OS camera driver will likely not work");
}
break;
default:
printk(BIOS_ERR, "Unsupported power operation: %x\n", seq->ops[i].type);
printk(BIOS_ERR, "OS camera driver will likely not work");
break;
}
if (seq->ops[i].delay_ms)
acpigen_write_sleep(seq->ops[i].delay_ms);
}
}
static void write_pci_camera_device(const struct device *dev)
{
struct drivers_intel_mipi_camera_config *config = dev->chip_info;
@ -467,6 +520,40 @@ static void write_i2c_camera_device(const struct device *dev, const char *scope)
acpigen_write_device(acpi_device_name(dev));
/* add power resource */
if (config->has_power_resource) {
acpigen_write_power_res(POWER_RESOURCE_NAME, 0, 0, NULL, 0);
acpigen_write_name_integer("STA", 0);
acpigen_write_STA_ext("STA");
acpigen_write_method_serialized("_ON", 0);
acpigen_write_if();
acpigen_emit_byte(LEQUAL_OP);
acpigen_emit_namestring("STA");
acpigen_write_integer(0);
fill_power_res_sequence(config, &config->on_seq);
acpigen_write_store_op_to_namestr(1, "STA");
acpigen_pop_len(); /* if */
acpigen_pop_len(); /* _ON */
/* _OFF operations */
acpigen_write_method_serialized("_OFF", 0);
acpigen_write_if();
acpigen_emit_byte(LEQUAL_OP);
acpigen_emit_namestring("STA");
acpigen_write_integer(1);
fill_power_res_sequence(config, &config->off_seq);
acpigen_write_store_op_to_namestr(0, "STA");
acpigen_pop_len(); /* if */
acpigen_pop_len(); /* _ON */
acpigen_pop_len(); /* Power Resource */
}
if (config->device_type == INTEL_ACPI_CAMERA_SENSOR)
acpigen_write_name_integer("_ADR", 0);
@ -519,6 +606,17 @@ static void write_camera_device_common(const struct device *dev)
acpigen_write_name_integer("CAMD", config->device_type);
}
if (config->pr0 || config->has_power_resource) {
acpigen_write_name("_PR0");
acpigen_write_package(1);
if (config->pr0)
acpigen_emit_namestring(config->pr0); /* External power resource */
else
acpigen_emit_namestring(POWER_RESOURCE_NAME);
acpigen_pop_len(); /* _PR0 */
}
switch (config->device_type) {
case INTEL_ACPI_CAMERA_CIO2:
camera_fill_cio2(dev);