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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
9#include <linux/export.h>
10#include <linux/mfd/tmio.h>
11
12#define CNF_CMD 0x04
13#define CNF_CTL_BASE 0x10
14#define CNF_INT_PIN 0x3d
15#define CNF_STOP_CLK_CTL 0x40
16#define CNF_GCLK_CTL 0x41
17#define CNF_SD_CLK_MODE 0x42
18#define CNF_PIN_STATUS 0x44
19#define CNF_PWR_CTL_1 0x48
20#define CNF_PWR_CTL_2 0x49
21#define CNF_PWR_CTL_3 0x4a
22#define CNF_CARD_DETECT_MODE 0x4c
23#define CNF_SD_SLOT 0x50
24#define CNF_EXT_GCLK_CTL_1 0xf0
25#define CNF_EXT_GCLK_CTL_2 0xf1
26#define CNF_EXT_GCLK_CTL_3 0xf9
27#define CNF_SD_LED_EN_1 0xfa
28#define CNF_SD_LED_EN_2 0xfe
29
30#define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/
31
32int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base)
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 /* Disable SD power during suspend */
39 sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01);
40
41 /* The below is required but why? FIXME */
42 sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f);
43
44 /* Power down SD bus */
45 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00);
46
47 return 0;
48}
49EXPORT_SYMBOL(tmio_core_mmc_enable);
50
51int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base)
52{
53
54 /* Enable the MMC/SD Control registers */
55 sd_config_write16(cnf, shift, CNF_CMD, SDCREN);
56 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe);
57
58 return 0;
59}
60EXPORT_SYMBOL(tmio_core_mmc_resume);
61
62void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state)
63{
64 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00);
65}
66EXPORT_SYMBOL(tmio_core_mmc_pwr);
67
68void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state)
69{
70 sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0);
71}
72EXPORT_SYMBOL(tmio_core_mmc_clk_div);
73
74

Warning: That file was not part of the compilation database. It may have many parsing errors.