tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/mfd/tmio.h>
10
11int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base)
12{
13 /* Enable the MMC/SD Control registers */
14 sd_config_write16(cnf, shift, CNF_CMD, SDCREN);
15 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe);
16
17 /* Disable SD power during suspend */
18 sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01);
19
20 /* The below is required but why? FIXME */
21 sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f);
22
23 /* Power down SD bus */
24 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00);
25
26 return 0;
27}
28EXPORT_SYMBOL(tmio_core_mmc_enable);
29
30int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base)
31{
32
33 /* Enable the MMC/SD Control registers */
34 sd_config_write16(cnf, shift, CNF_CMD, SDCREN);
35 sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe);
36
37 return 0;
38}
39EXPORT_SYMBOL(tmio_core_mmc_resume);
40
41void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state)
42{
43 sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00);
44}
45EXPORT_SYMBOL(tmio_core_mmc_pwr);
46
47void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state)
48{
49 sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0);
50}
51EXPORT_SYMBOL(tmio_core_mmc_clk_div);
52