| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| /* |
| * Poll a GPIO until it goes to the specified state |
| * Arg0 == GPIO # |
| * Arg1 == state (0 or 1) |
| * Arg2 == timeout in ms |
| */ |
| Method (GPPL, 3, Serialized) |
| { |
| Local0 = 0 |
| While (Local0 < Arg2) |
| { |
| If (\_SB.PCI0.GRXS (Arg0) == Arg1) { |
| Return (0) |
| } Else { |
| Local0++ |
| } |
| Sleep (1) |
| } |
| |
| If (Local0 == Arg2) { |
| Printf("[ERROR] GPPL for %o timed out", Arg0) |
| } |
| |
| Return (0xFF) |
| } |
| |
| /* Convert from 32-bit integer to 4-byte buffer (little-endian) */ |
| Method (ITOB, 1) |
| { |
| Local0 = Buffer(4) { 0, 0, 0, 0 } |
| Local0[0] = Arg0 & 0xFF |
| Local0[1] = (Arg0 >> 8) & 0xFF |
| Local0[2] = (Arg0 >> 16) & 0xFF |
| Local0[3] = (Arg0 >> 24) & 0xFF |
| Return (Local0) |
| } |