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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 
tmio_core_mmc_enable(void __iomem * cnf,int shift,unsigned long base)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 
tmio_core_mmc_resume(void __iomem * cnf,int shift,unsigned long base)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 
tmio_core_mmc_pwr(void __iomem * cnf,int shift,int state)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 
tmio_core_mmc_clk_div(void __iomem * cnf,int shift,int state)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 
54