| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <soc/pcr_ids.h> |
| |
| Scope (\_SB.PCI0) { |
| |
| /* |
| * Clear register 0x1C20/0x4820 |
| * Arg0 - PCR Port ID |
| */ |
| Method(SCSC, 1, Serialized) |
| { |
| PCRA (Arg0, 0x1C20, 0x0) |
| PCRA (Arg0, 0x4820, 0x0) |
| } |
| |
| /* EMMC */ |
| Device(PEMC) { |
| Name(_ADR, 0x001A0000) |
| Name (_DDN, "eMMC Controller") |
| Name (TEMP, 0) |
| |
| OperationRegion(SCSR, PCI_Config, 0x00, 0x100) |
| Field(SCSR, WordAcc, NoLock, Preserve) { |
| Offset (0x84), /* PMECTRLSTATUS */ |
| PMCR, 16, |
| Offset (0xA2), /* PG_CONFIG */ |
| , 2, |
| PGEN, 1, /* PG_ENABLE */ |
| } |
| |
| Method(_INI) { |
| /* Clear register 0x1C20/0x4820 */ |
| SCSC (PID_EMMC) |
| } |
| |
| Method(_PS0, 0, Serialized) { |
| Stall (50) // Sleep 50 us |
| |
| PGEN = 0 // Disable PG |
| |
| /* Clear register 0x1C20/0x4820 */ |
| SCSC (PID_EMMC) |
| |
| /* Set Power State to D0 */ |
| PMCR = PMCR & 0xFFFC |
| TEMP = PMCR |
| } |
| |
| Method(_PS3, 0, Serialized) { |
| PGEN = 1 // Enable PG |
| |
| /* Set Power State to D3 */ |
| PMCR = PMCR | 0x0003 |
| TEMP = PMCR |
| } |
| |
| Device (CARD) |
| { |
| Name (_ADR, 0x00000008) |
| Method (_RMV, 0, NotSerialized) |
| { |
| Return (0) |
| } |
| } |
| } |
| |
| /* SD CARD */ |
| Device (SDXC) |
| { |
| Name (_ADR, 0x00140005) |
| Name (_DDN, "SD Controller") |
| Name (TEMP, 0) |
| Name (DSUU, ToUUID("f6c13ea5-65cd-461f-ab7a-29f7e8d5bd61")) |
| |
| OperationRegion (SDPC, PCI_Config, 0x00, 0x100) |
| Field (SDPC, WordAcc, NoLock, Preserve) |
| { |
| Offset (0x84), /* PMECTRLSTATUS */ |
| PMCR, 16, |
| Offset (0xA2), /* PG_CONFIG */ |
| , 2, |
| PGEN, 1, /* PG_ENABLE */ |
| } |
| |
| /* |
| * _DSM x86 Device Specific Method |
| * Arg0: UUID Unique function identifier |
| * Arg1: Integer Revision Level |
| * Arg2: Integer Function Index (0 = Return Supported Functions) |
| * Arg3: Package Parameters |
| */ |
| Method (_DSM, 4) |
| { |
| If (Arg0 == DSUU) { |
| /* Check the revision */ |
| If (Arg1 >= 0) { |
| /* |
| * Function Index 0 the return value is a buffer containing |
| * one bit for each function index, starting with zero. |
| * Bit 0 - Indicates whether there is support for any |
| * functions other than function 0. |
| * Bit 1 - Indicates support to clear power control register |
| * Bit 2 - Indicates support to set power control register |
| * Bit 3 - Indicates support to set 1.8V signalling |
| * Bit 4 - Indicates support to set 3.3V signalling |
| * Bit 5 - Indicates support for HS200 mode |
| * Bit 6 - Indicates support for HS400 mode |
| * Bit 9 - Indicates eMMC I/O Driver Strength |
| */ |
| /* |
| * For SD we have to support functions to |
| * set 1.8V signalling and 3.3V signalling [BIT4, BIT3] |
| */ |
| If (Arg2 == 0) { |
| Return (Buffer () { 0x19 }) |
| } |
| /* |
| * Function Index 3: Set 1.8v signalling. |
| * We put a sleep of 100ms in this method to |
| * work around a known issue with detecting |
| * UHS SD card on PCH. This is to compensate |
| * for the SD VR slowness. |
| */ |
| If (Arg2 == 3) { |
| Sleep (100) |
| Return(Buffer () { 0x00 }) |
| } |
| /* |
| * Function Index 4: Set 3.3v signalling. |
| * We put a sleep of 100ms in this method to |
| * work around a known issue with detecting |
| * UHS SD card on PCH. This is to compensate |
| * for the SD VR slowness. |
| */ |
| If (Arg2 == 4) { |
| Sleep (100) |
| Return(Buffer () { 0x00 }) |
| } |
| } |
| } |
| Return(Buffer() { 0x0 }) |
| } |
| |
| Method(_INI) |
| { |
| /* Clear register 0x1C20/0x4820 */ |
| SCSC (PID_SDX) |
| } |
| |
| Method (_PS0, 0, Serialized) |
| { |
| PGEN = 0 /* Disable PG */ |
| |
| /* Clear register 0x1C20/0x4820 */ |
| SCSC (PID_SDX) |
| |
| /* Set Power State to D0 */ |
| PMCR = PMCR & 0xFFFC |
| TEMP = PMCR |
| |
| /* Change pad mode to Native */ |
| GPMO(SD_PWR_EN_PIN, 0x1) |
| } |
| |
| Method (_PS3, 0, Serialized) |
| { |
| PGEN = 1 /* Enable PG */ |
| |
| /* Set Power State to D3 */ |
| PMCR = PMCR | 0x0003 |
| TEMP = PMCR |
| |
| /* Change pad mode to GPIO control */ |
| GPMO(SD_PWR_EN_PIN, 0x0) |
| |
| /* Enable Tx Buffer */ |
| GTXE(SD_PWR_EN_PIN, 0x1) |
| |
| /* Drive TX to zero */ |
| CTXS(SD_PWR_EN_PIN) |
| } |
| |
| Device (CARD) |
| { |
| Name (_ADR, 0x00000008) |
| Method (_RMV, 0, NotSerialized) |
| { |
| Return (1) |
| } |
| } |
| } /* Device (SDXC) */ |
| } |