projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f327e07b RN |
1 | /* |
| 2 | * OMAP2 and OMAP3 powerdomain control | |
| 3 | * | |
| 4 | * Copyright (C) 2009-2010 Texas Instruments, Inc. | |
| 5 | * Copyright (C) 2007-2009 Nokia Corporation | |
| 6 | * | |
| 7 | * Derived from mach-omap2/powerdomain.c written by Paul Walmsley | |
| 8 | * Rajendra Nayak <rnayak@ti.com> | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify | |
| 11 | * it under the terms of the GNU General Public License version 2 as | |
| 12 | * published by the Free Software Foundation. | |
| 13 | */ | |
| 14 | ||
| 15 | #include <linux/io.h> | |
| 16 | #include <linux/errno.h> | |
| 17 | #include <linux/delay.h> | |
| 18 | #include <plat/prcm.h> | |
| 19 | #include "prm.h" | |
| 20 | #include "prm-regbits-34xx.h" | |
| 21 | #include "powerdomains.h" | |
| 22 | ||
| 23 | /* Common functions across OMAP2 and OMAP3 */ | |
| 24 | static int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) | |
| 25 | { | |
| 26 | prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK, | |
| 27 | (pwrst << OMAP_POWERSTATE_SHIFT), | |
| 28 | pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL); | |
| 29 | return 0; | |
| 30 | } | |
| 31 | ||
| 32 | static int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm) | |
| 33 | { | |
| 34 | return prm_read_mod_bits_shift(pwrdm->prcm_offs, | |
| 35 | OMAP2_PM_PWSTCTRL, OMAP_POWERSTATE_MASK); | |
| 36 | } | |
| 37 | ||
| 38 | static int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm) | |
| 39 | { | |
| 40 | return prm_read_mod_bits_shift(pwrdm->prcm_offs, | |
| 41 | OMAP2_PM_PWSTST, OMAP_POWERSTATEST_MASK); | |
| 42 | } | |
| 43 | ||
| 12627578 RN |
44 | static int omap2_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst) |
| 45 | { | |
| 46 | u32 v; | |
| 47 | ||
| 48 | v = pwrst << __ffs(OMAP3430_LOGICL1CACHERETSTATE_MASK); | |
| 49 | prm_rmw_mod_reg_bits(OMAP3430_LOGICL1CACHERETSTATE_MASK, v, | |
| 50 | pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL); | |
| 51 | ||
| 52 | return 0; | |
| 53 | } | |
| 54 | ||
| f327e07b RN |
55 | /* Applicable only for OMAP3. Not supported on OMAP2 */ |
| 56 | static int omap3_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm) | |
| 57 | { | |
| 58 | return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST, | |
| 59 | OMAP3430_LASTPOWERSTATEENTERED_MASK); | |
| 60 | } | |
| 61 | ||
| 12627578 RN |
62 | static int omap3_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm) |
| 63 | { | |
| 64 | return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST, | |
| 65 | OMAP3430_LOGICSTATEST_MASK); | |
| 66 | } | |
| 67 | ||
| 68 | static int omap3_pwrdm_read_logic_retst(struct powerdomain *pwrdm) | |
| 69 | { | |
| 70 | return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL, | |
| 71 | OMAP3430_LOGICSTATEST_MASK); | |
| 72 | } | |
| 73 | ||
| 74 | static int omap3_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm) | |
| 75 | { | |
| 76 | return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST, | |
| 77 | OMAP3430_LASTLOGICSTATEENTERED_MASK); | |
| 78 | } | |
| 79 | ||
| f327e07b RN |
80 | struct pwrdm_ops omap2_pwrdm_operations = { |
| 81 | .pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst, | |
| 82 | .pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst, | |
| 83 | .pwrdm_read_pwrst = omap2_pwrdm_read_pwrst, | |
| 12627578 | 84 | .pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst, |
| f327e07b RN |
85 | }; |
| 86 | ||
| 87 | struct pwrdm_ops omap3_pwrdm_operations = { | |
| 88 | .pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst, | |
| 89 | .pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst, | |
| 90 | .pwrdm_read_pwrst = omap2_pwrdm_read_pwrst, | |
| 91 | .pwrdm_read_prev_pwrst = omap3_pwrdm_read_prev_pwrst, | |
| 12627578 RN |
92 | .pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst, |
| 93 | .pwrdm_read_logic_pwrst = omap3_pwrdm_read_logic_pwrst, | |
| 94 | .pwrdm_read_logic_retst = omap3_pwrdm_read_logic_retst, | |
| 95 | .pwrdm_read_prev_logic_pwrst = omap3_pwrdm_read_prev_logic_pwrst, | |
| f327e07b | 96 | }; |