| /* This file is part of the coreboot project. */ |
| /* |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #define R_ICLK_PCR_CAMERA1 0x8000 |
| #define B_ICLK_PCR_FREQUENCY 0x1 |
| #define B_ICLK_PCR_REQUEST 0x2 |
| |
| /* The clock control registers for each IMGCLK are offset by 0xC */ |
| #define B_ICLK_PCR_OFFSET 0xC |
| |
| Scope (\_SB.PCI0) { |
| |
| /* IsCLK PCH base register for clock settings */ |
| Name (ICKB, 0) |
| Store (PCRB (PID_ISCLK) + R_ICLK_PCR_CAMERA1, ICKB) |
| |
| /* |
| * Arg0 : Clock Number |
| * Return : Offset of register to control the clock in Arg0 |
| * |
| */ |
| Method (OFST, 0x1, NotSerialized) |
| { |
| Return (ICKB + (Arg0 * B_ICLK_PCR_OFFSET)) |
| } |
| |
| /* |
| * Helper function for Read And OR Write |
| * Arg0 : source and destination |
| * Arg1 : And data |
| * Arg2 : Or data |
| */ |
| Method (RAOW, 0x3, Serialized) |
| { |
| OperationRegion (ICLK, SystemMemory, OFST(Arg0), 4) |
| Field (ICLK, AnyAcc, NoLock, Preserve) |
| { |
| VAL0, 32 |
| } |
| Local0 = VAL0 |
| VAL0 = Local0 & Arg1 | Arg2 |
| } |
| |
| /* |
| * Clock control Method |
| * Arg0: Clock source select(0: IMGCLKOUT_0, 1: IMGCLKOUT_1, 2: IMGCLKOUT_2, 3: IMGCLKOUT_3, |
| * 4: IMGCLKOUT_4, 5: IMGCLKOUT_5) |
| * Arg1: Select 24MHz / 19.2 MHz (0: 24MHz, 1: 19.2MHz) |
| */ |
| Method (MCON, 0x2, NotSerialized) |
| { |
| /* Set Clock Frequency */ |
| RAOW (Arg0, ~B_ICLK_PCR_FREQUENCY, Arg1) |
| |
| /* Enable Clock */ |
| RAOW (Arg0, ~B_ICLK_PCR_REQUEST, B_ICLK_PCR_REQUEST) |
| } |
| |
| Method (MCOF, 0x1, NotSerialized) |
| { |
| /* Disable Clock */ |
| RAOW (Arg0, ~B_ICLK_PCR_REQUEST, 0) |
| } |
| } |