| Paul Walmsley | c02060d | 2013-02-10 11:22:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * OMAP IP block custom reset and preprogramming stubs |
| 3 | * |
| 4 | * Copyright (C) 2012 Texas Instruments, Inc. |
| 5 | * Paul Walmsley |
| 6 | * |
| 7 | * A small number of IP blocks need custom reset and preprogramming |
| 8 | * functions. The stubs in this file provide a standard way for the |
| 9 | * hwmod code to call these functions, which are to be located under |
| 10 | * drivers/. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU General Public License as |
| 14 | * published by the Free Software Foundation version 2. |
| 15 | * |
| 16 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any |
| 17 | * kind, whether express or implied; without even the implied warranty |
| 18 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 24 | * 02110-1301 USA |
| 25 | */ |
| 26 | #include <linux/kernel.h> |
| Arnd Bergmann | 55ccb1a | 2013-02-14 17:47:35 +0100 | [diff] [blame] | 27 | #include <linux/errno.h> |
| Paul Walmsley | c02060d | 2013-02-10 11:22:23 -0700 | [diff] [blame] | 28 | |
| 29 | #include <sound/aess.h> |
| 30 | |
| 31 | #include "omap_hwmod.h" |
| 32 | |
| 33 | /** |
| 34 | * omap_hwmod_aess_preprogram - enable AESS internal autogating |
| 35 | * @oh: struct omap_hwmod * |
| 36 | * |
| 37 | * The AESS will not IdleAck to the PRCM until its internal autogating |
| 38 | * is enabled. Since internal autogating is disabled by default after |
| 39 | * AESS reset, we must enable autogating after the hwmod code resets |
| 40 | * the AESS. Returns 0. |
| 41 | */ |
| 42 | int omap_hwmod_aess_preprogram(struct omap_hwmod *oh) |
| 43 | { |
| 44 | void __iomem *va; |
| 45 | |
| 46 | va = omap_hwmod_get_mpu_rt_va(oh); |
| 47 | if (!va) |
| 48 | return -EINVAL; |
| 49 | |
| 50 | aess_enable_autogating(va); |
| 51 | |
| 52 | return 0; |
| 53 | } |