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| author | Tom Rini <trini@konsulko.com> | 2020-09-25 09:04:01 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-09-25 09:04:01 -0400 |
| commit | 0ac83d080a0044cd0d8f782ba12f02cf969d3004 (patch) | |
| tree | ca5c2351113ba9b56d59e241a8857c7e6e8f5604 /lib/acpi/acpi_device.c | |
| parent | 67ece26d8b5d4bfa4fda8c456261c465d0815d7d (diff) | |
| parent | 8c180d669a0f4a8eb70bde8c74c73cef45993f67 (diff) | |
| download | u-boot-WIP/25Sep2020-next.tar.gz | |
Merge branch 'next' of https://gitlab.denx.de/u-boot/custodians/u-boot-x86 into nextWIP/25Sep2020-next
- Enhance the 'zboot' command to be more like 'bootm' with sub-commands
- The last series of ACPI core changes for programmatic generation of
ACPI tables
- Add all required ACPI tables for ApolloLake and enable ACPIGEN on
Chromebook Coral
- A feature minor enhancements to the 'hob' command
- Intel edison: Support for writing an xFSTK image via binman
Diffstat (limited to 'lib/acpi/acpi_device.c')
| -rw-r--r-- | lib/acpi/acpi_device.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/lib/acpi/acpi_device.c b/lib/acpi/acpi_device.c index 3c75b6d962..95dfac583f 100644 --- a/lib/acpi/acpi_device.c +++ b/lib/acpi/acpi_device.c @@ -487,7 +487,50 @@ int acpi_device_add_power_res(struct acpi_ctx *ctx, u32 tx_state_val, return 0; } -/* ACPI 6.3 section 6.4.3.8.2.1 - I2cSerialBus() */ +int acpi_device_write_dsm_i2c_hid(struct acpi_ctx *ctx, + int hid_desc_reg_offset) +{ + int ret; + + acpigen_write_dsm_start(ctx); + ret = acpigen_write_dsm_uuid_start(ctx, ACPI_DSM_I2C_HID_UUID); + if (ret) + return log_ret(ret); + + acpigen_write_dsm_uuid_start_cond(ctx, 0); + /* ToInteger (Arg1, Local2) */ + acpigen_write_to_integer(ctx, ARG1_OP, LOCAL2_OP); + /* If (LEqual (Local2, 0x0)) */ + acpigen_write_if_lequal_op_int(ctx, LOCAL2_OP, 0x0); + /* Return (Buffer (One) { 0x1f }) */ + acpigen_write_return_singleton_buffer(ctx, 0x1f); + acpigen_pop_len(ctx); /* Pop : If */ + /* Else */ + acpigen_write_else(ctx); + /* If (LEqual (Local2, 0x1)) */ + acpigen_write_if_lequal_op_int(ctx, LOCAL2_OP, 0x1); + /* Return (Buffer (One) { 0x3f }) */ + acpigen_write_return_singleton_buffer(ctx, 0x3f); + acpigen_pop_len(ctx); /* Pop : If */ + /* Else */ + acpigen_write_else(ctx); + /* Return (Buffer (One) { 0x0 }) */ + acpigen_write_return_singleton_buffer(ctx, 0x0); + acpigen_pop_len(ctx); /* Pop : Else */ + acpigen_pop_len(ctx); /* Pop : Else */ + acpigen_write_dsm_uuid_end_cond(ctx); + + acpigen_write_dsm_uuid_start_cond(ctx, 1); + acpigen_write_return_byte(ctx, hid_desc_reg_offset); + acpigen_write_dsm_uuid_end_cond(ctx); + + acpigen_write_dsm_uuid_end(ctx); + acpigen_write_dsm_end(ctx); + + return 0; +} + +/* ACPI 6.3 section 6.4.3.8.2.1 - I2cSerialBusV2() */ static void acpi_device_write_i2c(struct acpi_ctx *ctx, const struct acpi_i2c *i2c) { |