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| author | Richard Purdie <rpurdie@rpsys.net> | 2006-01-05 20:44:57 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-01-05 20:44:57 +0000 |
| commit | 945b957972844881002ab4f68534581f4427a30b (patch) | |
| tree | 0b9a1deb5094b847ce943b8f101386f373f472c6 /drivers/pcmcia/pxa2xx_sharpsl.c | |
| parent | 53b7c2b243bd31f857dddabd9339f2dd6ae3fb67 (diff) | |
| download | kernel_samsung_smdk4412-945b957972844881002ab4f68534581f4427a30b.tar.gz kernel_samsung_smdk4412-945b957972844881002ab4f68534581f4427a30b.tar.bz2 kernel_samsung_smdk4412-945b957972844881002ab4f68534581f4427a30b.zip | |
[ARM] 3230/1: Sharp Scoop: Fix Shared Power Control Issues
Patch from Richard Purdie
The SL-Cxx00 devices have a power control register in SCOOP that is
shared by both CF and MMC/SD card slots. The CF reset code was resetting
this register leading to various lockups as the MMC power was suddenly
lost. This patch handles the CPR register in a more sensitive manner.
It also removes some unneeded collie specific calls as the reset code
handles this.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/pcmcia/pxa2xx_sharpsl.c')
| -rw-r--r-- | drivers/pcmcia/pxa2xx_sharpsl.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/pcmcia/pxa2xx_sharpsl.c b/drivers/pcmcia/pxa2xx_sharpsl.c index 56c58831e80..4fbd995360b 100644 --- a/drivers/pcmcia/pxa2xx_sharpsl.c +++ b/drivers/pcmcia/pxa2xx_sharpsl.c @@ -36,9 +36,18 @@ struct scoop_pcmcia_config *platform_scoop_config; #define SCOOP_DEV platform_scoop_config->devs -static void sharpsl_pcmcia_init_reset(struct scoop_pcmcia_dev *scoopdev) +static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt) { + struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr]; + reset_scoop(scoopdev->dev); + + /* Shared power controls need to be handled carefully */ + if (platform_scoop_config->power_ctrl) + platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr); + else + write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000); + scoopdev->keep_vs = NO_KEEP_VS; scoopdev->keep_rd = 0; } @@ -208,26 +217,17 @@ static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { - sharpsl_pcmcia_init_reset(&SCOOP_DEV[skt->nr]); + sharpsl_pcmcia_init_reset(skt); /* Enable interrupt */ write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0); write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101); SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; - - if (machine_is_collie()) - /* We need to disable SS_OUTPUT_ENA here. */ - write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR, read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR) & ~0x0080); } static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { - /* CF_BUS_OFF */ - sharpsl_pcmcia_init_reset(&SCOOP_DEV[skt->nr]); - - if (machine_is_collie()) - /* We need to disable SS_OUTPUT_ENA here. */ - write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR, read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR) & ~0x0080); + sharpsl_pcmcia_init_reset(skt); } static struct pcmcia_low_level sharpsl_pcmcia_ops = { |