The patch titled
mmc: make the configuration memory resource optional
has been added to the -mm tree. Its filename is
mmc-make-the-configuration-memory-resource-optional.patch
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------------------------------------------------------
Subject: mmc: make the configuration memory resource optional
From: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
Add support for tmio_mmc hardware configurations, that lack the cnf io
area, like SuperH SoCs. With this patch such hardware can pass a single
ctl io area with the platform data.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
Acked-by: Magnus Damm <damm@xxxxxxxxxxxxx>
Cc: Pierre Ossman <drzeus@xxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
Cc: Ian Molton <ian@xxxxxxxxxxxxxx>
Cc: "Roberto A. Foglietta" <roberto.foglietta@xxxxxxxxx>
Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/tmio_mmc.c | 18 +++++++++++-------
drivers/mmc/host/tmio_mmc.h | 6 ++++++
2 files changed, 17 insertions(+), 7 deletions(-)
diff -puN drivers/mmc/host/tmio_mmc.c~mmc-make-the-configuration-memory-resource-optional drivers/mmc/host/tmio_mmc.c
--- a/drivers/mmc/host/tmio_mmc.c~mmc-make-the-configuration-memory-resource-optional
+++ a/drivers/mmc/host/tmio_mmc.c
@@ -519,12 +519,12 @@ static int __devinit tmio_mmc_probe(stru
struct mmc_host *mmc;
int ret = -EINVAL;
- if (dev->num_resources != 3)
+ if (dev->num_resources < 2 || dev->num_resources > 3)
goto out;
res_ctl = platform_get_resource(dev, IORESOURCE_MEM, 0);
res_cnf = platform_get_resource(dev, IORESOURCE_MEM, 1);
- if (!res_ctl || !res_cnf)
+ if (!res_ctl)
goto out;
pdata = cell->driver_data;
@@ -548,9 +548,11 @@ static int __devinit tmio_mmc_probe(stru
if (!host->ctl)
goto host_free;
- host->cnf = ioremap(res_cnf->start, resource_size(res_cnf));
- if (!host->cnf)
- goto unmap_ctl;
+ if (res_cnf) {
+ host->cnf = ioremap(res_cnf->start, resource_size(res_cnf));
+ if (!host->cnf)
+ goto unmap_ctl;
+ }
mmc->ops = &tmio_mmc_ops;
mmc->caps = MMC_CAP_4_BIT_DATA;
@@ -606,7 +608,8 @@ static int __devinit tmio_mmc_probe(stru
return 0;
unmap_cnf:
- iounmap(host->cnf);
+ if (host->cnf)
+ iounmap(host->cnf);
unmap_ctl:
iounmap(host->ctl);
host_free:
@@ -626,7 +629,8 @@ static int __devexit tmio_mmc_remove(str
mmc_remove_host(mmc);
free_irq(host->irq, host);
iounmap(host->ctl);
- iounmap(host->cnf);
+ if (host->cnf)
+ iounmap(host->cnf);
mmc_free_host(mmc);
}
diff -puN drivers/mmc/host/tmio_mmc.h~mmc-make-the-configuration-memory-resource-optional drivers/mmc/host/tmio_mmc.h
--- a/drivers/mmc/host/tmio_mmc.h~mmc-make-the-configuration-memory-resource-optional
+++ a/drivers/mmc/host/tmio_mmc.h
@@ -166,18 +166,24 @@ static inline void sd_ctrl_write32(struc
static inline void sd_config_write8(struct tmio_mmc_host *host, int addr,
u8 val)
{
+ if (!host->cnf)
+ return;
writeb(val, host->cnf + (addr << host->bus_shift));
}
static inline void sd_config_write16(struct tmio_mmc_host *host, int addr,
u16 val)
{
+ if (!host->cnf)
+ return;
writew(val, host->cnf + (addr << host->bus_shift));
}
static inline void sd_config_write32(struct tmio_mmc_host *host, int addr,
u32 val)
{
+ if (!host->cnf)
+ return;
writew(val, host->cnf + (addr << host->bus_shift));
writew(val >> 16, host->cnf + ((addr + 2) << host->bus_shift));
}
_
Patches currently in -mm which might be from g.liakhovetski@xxxxxx are
linux-next.patch
mmc-make-the-configuration-memory-resource-optional.patch
spi-remove-imx-spi-driver.patch
spi-add-spi-driver-for-most-known-imx-socs.patch
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