diff options
Diffstat (limited to 'src/soc/intel/broadwell')
| -rw-r--r-- | src/soc/intel/broadwell/acpi/smbus.asl | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/src/soc/intel/broadwell/acpi/smbus.asl b/src/soc/intel/broadwell/acpi/smbus.asl index 83c8991fbf..32b0b9cc62 100644 --- a/src/soc/intel/broadwell/acpi/smbus.asl +++ b/src/soc/intel/broadwell/acpi/smbus.asl @@ -5,218 +5,4 @@ Device (SBUS) { Name (_ADR, 0x001f0003) - -#ifdef ENABLE_SMBUS_METHODS - OperationRegion (SMBP, PCI_Config, 0x00, 0x100) - Field(SMBP, DWordAcc, NoLock, Preserve) - { - Offset(0x40), - , 2, - I2CE, 1 - } - - OperationRegion (SMBI, SystemIO, SMBUS_IO_BASE, 0x20) - Field (SMBI, ByteAcc, NoLock, Preserve) - { - HSTS, 8, // Host Status - , 8, - HCNT, 8, // Host Control - HCMD, 8, // Host Command - TXSA, 8, // Transmit Slave Address - DAT0, 8, // Host Data 0 - DAT1, 8, // Host Data 1 - HBDB, 8, // Host Block Data Byte - PECK, 8, // Packet Error Check - RXSA, 8, // Receive Slave Address - RXDA, 16, // Receive Slave Data - AUXS, 8, // Auxiliary Status - AUXC, 8, // Auxiliary Control - SLPC, 8, // SMLink Pin Control - SBPC, 8, // SMBus Pin Control - SSTS, 8, // Slave Status - SCMD, 8, // Slave Command - NADR, 8, // Notify Device Address - NDLB, 8, // Notify Data Low Byte - NDLH, 8, // Notify Data High Byte - } - - // Kill all SMBus communication - Method (KILL, 0, Serialized) - { - Or (HCNT, 0x02, HCNT) // Send Kill - Or (HSTS, 0xff, HSTS) // Clean Status - } - - // Check if last operation completed - // return Failure = 0, Success = 1 - Method (CMPL, 0, Serialized) - { - Store (4000, Local0) // Timeout 200ms in 50us steps - While (Local0) { - If (And(HSTS, 0x02)) { // Completion Status? - Return (1) // Operation Completed - } Else { - Stall (50) - Decrement (Local0) - If (LEqual(Local0, 0)) { - KILL() - } - } - } - - Return (0) // Failure - } - - - // Wait for SMBus to become ready - Method (SRDY, 0, Serialized) - { - Store (200, Local0) // Timeout 200ms - While (Local0) { - If (And(HSTS, 0x40)) { // IN_USE? - Sleep(1) // Wait 1ms - Decrement(Local0) // timeout-- - If (LEqual(Local0, 0)) { - Return (1) - } - } Else { - Store (0, Local0) // We're ready - } - } - - Store (4000, Local0) // Timeout 200ms (50us * 4000) - While (Local0) { - If (And (HSTS, 0x01)) { // Host Busy? - Stall(50) // Wait 50us - Decrement(Local0) // timeout-- - If (LEqual(Local0, 0)) { - KILL() - } - } Else { - Return (0) // Success - } - } - - Return (1) // Failure - } - - // SMBus Send Byte - // Arg0: Address - // Arg1: Data - // Return: 1 = Success, 0=Failure - - Method (SSXB, 2, Serialized) - { - - // Is the SMBus Controller Ready? - If (SRDY()) { - Return (0) - } - - // Send Byte - Store (0, I2CE) // SMBus Enable - Store (0xbf, HSTS) - Store (Arg0, TXSA) // Write Address - Store (Arg1, HCMD) // Write Data - - Store (0x48, HCNT) // Start + Byte Data Protocol - - If (CMPL()) { - Or (HSTS, 0xff, HSTS) // Clean up - Return (1) // Success - } - - Return (0) - } - - - // SMBus Receive Byte - // Arg0: Address - // Return: 0xffff = Failure, Data (8bit) = Success - - Method (SRXB, 2, Serialized) - { - - // Is the SMBus Controller Ready? - If (SRDY()) { - Return (0xffff) - } - - // Receive Byte - Store (0, I2CE) // SMBus Enable - Store (0xbf, HSTS) - Store (Or (Arg0, 1), TXSA) // Write Address - - Store (0x44, HCNT) // Start - - If (CMPL()) { - Or (HSTS, 0xff, HSTS) // Clean up - Return (DAT0) // Success - } - - Return (0xffff) - } - - - // SMBus Write Byte - // Arg0: Address - // Arg1: Command - // Arg2: Data - // Return: 1 = Success, 0=Failure - - Method (SWRB, 3, Serialized) - { - - // Is the SMBus Controller Ready? - If (SRDY()) { - Return (0) - } - - // Send Byte - Store (0, I2CE) // SMBus Enable - Store (0xbf, HSTS) - Store (Arg0, TXSA) // Write Address - Store (Arg1, HCMD) // Write Command - Store (Arg2, DAT0) // Write Data - - Store (0x48, HCNT) // Start + Byte Protocol - - If (CMPL()) { - Or (HSTS, 0xff, HSTS) // Clean up - Return (1) // Success - } - - Return (0) - } - - - // SMBus Read Byte - // Arg0: Address - // Arg1: Command - // Return: 0xffff = Failure, Data (8bit) = Success - - Method (SRDB, 2, Serialized) - { - - // Is the SMBus Controller Ready? - If (SRDY()) { - Return (0xffff) - } - - // Receive Byte - Store (0, I2CE) // SMBus Enable - Store (0xbf, HSTS) - Store (Or (Arg0, 1), TXSA) // Write Address - Store (Arg1, HCMD) // Command - - Store (0x48, HCNT) // Start - - If (CMPL()) { - Or (HSTS, 0xff, HSTS) // Clean up - Return (DAT0) // Success - } - - Return (0xffff) - } -#endif } |