diff options
Diffstat (limited to 'src/drivers/intel/usb4')
| -rw-r--r-- | src/drivers/intel/usb4/retimer/retimer.c | 46 | ||||
| -rw-r--r-- | src/drivers/intel/usb4/retimer/retimer.h | 9 |
2 files changed, 49 insertions, 6 deletions
diff --git a/src/drivers/intel/usb4/retimer/retimer.c b/src/drivers/intel/usb4/retimer/retimer.c index 7a693ff531..f884ac6004 100644 --- a/src/drivers/intel/usb4/retimer/retimer.c +++ b/src/drivers/intel/usb4/retimer/retimer.c @@ -8,6 +8,7 @@ #include <gpio.h> #include <string.h> #include "chip.h" +#include "retimer.h" /* Unique ID for the retimer _DSM. */ #define INTEL_USB4_RETIMER_DSM_UUID "61788900-C470-42BB-80F0-23A313864593" @@ -19,6 +20,8 @@ * 0: Query command implemented * 1: Query force power enable state * 2: Set force power state + * 3: Get Retimer FW Update EC Ram value + * 4: Set Retimer FW Update EC Ram value * Arg3: A package containing parameters for the function specified * by the UUID, revision ID and function index. */ @@ -28,15 +31,15 @@ static void usb4_retimer_cb_standard_query(void *arg) /* * ToInteger (Arg1, Local2) * If (Local2 == 1) { - * Return(Buffer() {0x07}) + * Return(Buffer() {0x1f}) * } * Return (Buffer() {0x01}) */ acpigen_write_to_integer(ARG1_OP, LOCAL2_OP); - /* Revision 1 supports 2 Functions beyond the standard query */ + /* Revision 1 supports 4 Functions beyond the standard query */ acpigen_write_if_lequal_op_int(LOCAL2_OP, 1); - acpigen_write_return_singleton_buffer(0x07); + acpigen_write_return_singleton_buffer(0x1f); acpigen_pop_len(); /* If */ /* Other revisions support no additional functions */ @@ -48,7 +51,7 @@ static void usb4_retimer_cb_get_power_state(void *arg) struct acpi_gpio *power_gpio = arg; /* - * // Read power gpio into Local0 + * Read power gpio into Local0 * Store (\_SB.PCI0.GTXS (power_gpio), Local0) * Return (Local0) */ @@ -61,7 +64,7 @@ static void usb4_retimer_cb_set_power_state(void *arg) struct acpi_gpio *power_gpio = arg; /* - * // Get argument for on/off from Arg3[0] + * Get information to set to retimer info from Arg3[0] * Local0 = DeRefOf (Arg3[0]) */ acpigen_get_package_op_element(ARG3_OP, 0, LOCAL0_OP); @@ -90,10 +93,32 @@ static void usb4_retimer_cb_set_power_state(void *arg) acpigen_write_return_integer(0); } -static void (*usb4_retimer_callbacks[3])(void *) = { +static void usb4_retimer_cb_get_retimer_info(void *arg) +{ + const char *RFWU = ec_retimer_fw_update_path(); + + /* + * Read Mux Retimer info from EC RAM + * Return RFWU if RFWU is not NULL. Otherwise return -1 to + * inform kernel about error. + */ + if (!RFWU) + acpigen_write_return_byte(-1); + else + acpigen_write_return_namestr(RFWU); +} + +static void usb4_retimer_cb_set_retimer_info(void *arg) +{ + ec_retimer_fw_update(arg); +} + +static void (*usb4_retimer_callbacks[5])(void *) = { usb4_retimer_cb_standard_query, /* Function 0 */ usb4_retimer_cb_get_power_state, /* Function 1 */ usb4_retimer_cb_set_power_state, /* Function 2 */ + usb4_retimer_cb_get_retimer_info, /* Function 3 */ + usb4_retimer_cb_set_retimer_info, /* Function 4 */ }; static void usb4_retimer_fill_ssdt(const struct device *dev) @@ -134,3 +159,12 @@ struct chip_operations drivers_intel_usb4_retimer_ops = { CHIP_NAME("Intel USB4 Retimer") .enable_dev = usb4_retimer_enable }; + +__weak const char *ec_retimer_fw_update_path(void) +{ + return NULL; +} + +__weak void ec_retimer_fw_update(void *arg) +{ +} diff --git a/src/drivers/intel/usb4/retimer/retimer.h b/src/drivers/intel/usb4/retimer/retimer.h new file mode 100644 index 0000000000..4c4044a2fe --- /dev/null +++ b/src/drivers/intel/usb4/retimer/retimer.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef _DRIVERS_INTEL_USB4_RETIMER_H_ +#define _DRIVERS_INTEL_USB4_RETIMER_H_ + +const char *ec_retimer_fw_update_path(void); +void ec_retimer_fw_update(void *arg); + +#endif /* _DRIVERS_INTEL_USB4_RETIMER_H_ */ |