diff options
| author | Ian Molton <ian@mnementh.co.uk> | 2010-01-06 13:51:48 +0100 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-01-18 12:30:27 +0100 |
| commit | 64e8867ba8098b69889c1af94997a5ba2348fb26 (patch) | |
| tree | 3391806575ec3435a26043a22ba45c9d76f0b791 /drivers/mfd/tmio_core.c | |
| parent | 6f2af72a2451b7491fba820b1d1b0b91c6a84027 (diff) | |
| download | lwn-64e8867ba8098b69889c1af94997a5ba2348fb26.tar.gz lwn-64e8867ba8098b69889c1af94997a5ba2348fb26.zip | |
mfd: tmio_mmc hardware abstraction for CNF area
This patch abstracts out the CNF area code from tmio_mmc which
is not present in all hardware that can use this driver. This
is required so that we can support non-toshiba based hardware.
ASIC3 support by Philipp Zabel
Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/tmio_core.c')
| -rw-r--r-- | drivers/mfd/tmio_core.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/mfd/tmio_core.c b/drivers/mfd/tmio_core.c new file mode 100644 index 000000000000..eddc19ae464b --- /dev/null +++ b/drivers/mfd/tmio_core.c @@ -0,0 +1,52 @@ +/* + * Copyright(c) 2009 Ian Molton <spyro@f2s.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/mfd/tmio.h> + +int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base) +{ + /* Enable the MMC/SD Control registers */ + sd_config_write16(cnf, shift, CNF_CMD, SDCREN); + sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); + + /* Disable SD power during suspend */ + sd_config_write8(cnf, shift, CNF_PWR_CTL_3, 0x01); + + /* The below is required but why? FIXME */ + sd_config_write8(cnf, shift, CNF_STOP_CLK_CTL, 0x1f); + + /* Power down SD bus */ + sd_config_write8(cnf, shift, CNF_PWR_CTL_2, 0x00); + + return 0; +} +EXPORT_SYMBOL(tmio_core_mmc_enable); + +int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base) +{ + + /* Enable the MMC/SD Control registers */ + sd_config_write16(cnf, shift, CNF_CMD, SDCREN); + sd_config_write32(cnf, shift, CNF_CTL_BASE, base & 0xfffe); + + return 0; +} +EXPORT_SYMBOL(tmio_core_mmc_resume); + +void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state) +{ + sd_config_write8(cnf, shift, CNF_PWR_CTL_2, state ? 0x02 : 0x00); +} +EXPORT_SYMBOL(tmio_core_mmc_pwr); + +void tmio_core_mmc_clk_div(void __iomem *cnf, int shift, int state) +{ + sd_config_write8(cnf, shift, CNF_SD_CLK_MODE, state ? 1 : 0); +} +EXPORT_SYMBOL(tmio_core_mmc_clk_div); + |