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64e8867b IM |
1 | /* |
2 | * Copyright(c) 2009 Ian Molton <spyro@f2s.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
5d4a357d | 9 | #include <linux/export.h> |
64e8867b IM |
10 | #include <linux/mfd/tmio.h> |
11 | ||
12 | int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base) | |
13 | { | |
14 | /* Enable the MMC/SD Control registers */ | |
15 | sd_config_write16(cnf, shift, CNF_CMD, SDCREN); | |
16 | sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); | |
17 | ||
18 | /* Disable SD power during suspend */ | |
19 | sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01); | |
20 | ||
21 | /* The below is required but why? FIXME */ | |
22 | sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f); | |
23 | ||
24 | /* Power down SD bus */ | |
25 | sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00); | |
26 | ||
27 | return 0; | |
28 | } | |
29 | EXPORT_SYMBOL(tmio_core_mmc_enable); | |
30 | ||
31 | int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base) | |
32 | { | |
33 | ||
34 | /* Enable the MMC/SD Control registers */ | |
35 | sd_config_write16(cnf, shift, CNF_CMD, SDCREN); | |
36 | sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); | |
37 | ||
38 | return 0; | |
39 | } | |
40 | EXPORT_SYMBOL(tmio_core_mmc_resume); | |
41 | ||
42 | void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state) | |
43 | { | |
44 | sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00); | |
45 | } | |
46 | EXPORT_SYMBOL(tmio_core_mmc_pwr); | |
47 | ||
48 | void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state) | |
49 | { | |
50 | sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0); | |
51 | } | |
52 | EXPORT_SYMBOL(tmio_core_mmc_clk_div); | |
53 |