Commit graph

968 commits

Author SHA1 Message Date
Wolfram Sang
7e29c30603 mmc: sdhci-esdhc-imx: add card detect on custom GPIO for mx25/35
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Marc Reilly <marc@cpdesign.com.au>
Tested-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-17 15:35:04 -04:00
Wolfram Sang
3bb2a9f6a7 mmc: sdhci-esdhc: broken card detection is not a default quirk
It can be worked around using a GPIO which will be done for i.MX later.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Tested-by: Marc Reilly <marc@cpdesign.com.au>
Tested-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-17 15:35:02 -04:00
Wolfram Sang
0c6d49ce53 mmc: sdhci-esdhc-imx: add write protect on custom GPIO on mx25/35
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Marc Reilly <marc@cpdesign.com.au>
Tested-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-17 15:35:00 -04:00
Linus Walleij
dffc55adfa mmc: msm_sdcc: remove needless cache flush after dma_unmap_sg()
dma_unmap_sg() already flushes the cache, I don't get what this
code is doing here.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-17 15:34:40 -04:00
Russell King
9c9585e0e9 Merge branches 'aaci', 'mmci-dma', 'pl' and 'pl011' into drivers 2011-03-17 11:04:51 +00:00
David Brown
92c260f755 Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits)
  ARM: 6806/1: irq: introduce entry and exit functions for chained handlers
  ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas
  ARM: 6747/1: P2V: Thumb2 support
  ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
  ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode
  ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9
  ARM: 6772/1: errata: possible fault MMU translations following an ASID switch
  ARM: 6776/1: mach-ux500: activate fix for errata 753970
  ARM: 6794/1: SPEAr: Append UL to device address macros.
  ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files
  ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros
  ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code
  ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry
  ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci
  ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h
  ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files.
  ARM: 6681/1: SPEAr: add debugfs support to clk API
  ARM: 6703/1: SPEAr: update clk API support
  ARM: 6679/1: SPEAr: make clk API functions more generic
  ARM: 6737/1: SPEAr: formalized timer support
  ...

Conflicts:
	arch/arm/mach-msm/board-msm7x27.c
	arch/arm/mach-msm/board-msm7x30.c
	arch/arm/mach-msm/board-qsd8x50.c
	arch/arm/mach-msm/board-sapphire.c
	arch/arm/mach-msm/include/mach/memory.h
2011-03-16 22:13:16 -07:00
Guennadi Liakhovetski
f5e0cec449 mmc: sh_mmcif: support aggressive clock gating
To support MMC aggressive clock gating the driver has to stop the
interface clock when the .set_ios() method is called with .clock == 0.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-16 12:30:25 -04:00
Jaehoon Chung
41babf753c mmc: dw_mmc: support DDR mode
This patch adds DDR mode support to dw_mmc.

If we set any bit in UHS_REG bit[16:31], the card of that slot is
supported for DDR mode.  For example, if UHS_REG[16] is set, card
number 0 is DDR mode.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:51:47 -04:00
Chris Ball
e7054ba1f7 mmc: via-sdmmc: Remove set-but-unused variable.
drivers/mmc/host/via-sdmmc.c: In function ‘via_reset_pcictrl’:
drivers/mmc/host/via-sdmmc.c:805:8: warning: variable ‘addrbase’ set but
not used [-Wunused-but-set-variable]

Signed-off-by: Chris Ball <cjb@laptop.org>
Cc: Harald Welte <HaraldWelte@viatech.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-03-15 13:49:44 -04:00
Chris Ball
b3bd1b5b00 mmc: cb710: Return err value in cb710_wait_while_busy()
Fixes:

drivers/mmc/host/cb710-mmc.c: In function ‘cb710_wait_while_busy’:
drivers/mmc/host/cb710-mmc.c:182:6: warning: variable ‘err’ set but not
used [-Wunused-but-set-variable]

Signed-off-by: Chris Ball <cjb@laptop.org>
Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-03-15 13:49:42 -04:00
Chris Ball
24c300199b mmc: sdhci-pci: Remove set-but-unused variable.
drivers/mmc/host/sdhci-pci.c: In function ‘sdhci_pci_probe_slot’:
drivers/mmc/host/sdhci-pci.c:913:18: warning: variable ‘addr’ set but
not used [-Wunused-but-set-variable]

Signed-off-by: Chris Ball <cjb@laptop.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2011-03-15 13:49:39 -04:00
Shawn Guo
e4243f13d1 mmc: mxs-mmc: add mmc host driver for i.MX23/28
This adds the mmc host driver for Freescale MXS-based SoC i.MX23/28.
The driver calls into mxs-dma via generic dmaengine api for both pio
and data transfer.

Thanks Chris Ball for the indentation patch.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:37 -04:00
Wolfram Sang
8154b5756d mmc: sdhci-tegra: free irq on error and remove
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:35 -04:00
Sascha Hauer
f53fbde48e mmc: mxcmmc: use dmaengine API
This switches the mxcmmc driver to use the dmaengine API. Unlike
the old one this one is always present in the tree, even if no DMA
is implemented, hence we can remove all the #ifdefs in from the driver.
The driver automatically switches to PIO mode if no DMA support or no
suitable channel is available.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:32 -04:00
Jaehoon Chung
c9b2a06fb0 mmc: dw_mmc: support 8-bit buswidth
This patch adds support for 8-bit buswidth.
dw_mmc can use 8-bit buswidth and set to CTYPE_8BIT in card-type register.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:30 -04:00
Linus Walleij
449bdc2d9d mmc: tmio_mmc: use dmaengine helpers, drop submit check
Use the new dmaengine helper functions, and drop the error check
on the returned cookier from the dmaengine - we recently
established that this is really not allowed to fail.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:25 -04:00
Linus Walleij
3383433ce7 mmc: tmio_mmc: drop dma_sglen state variable
This variable doesn't seem to be used for anything after the
other patches so just drop it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:23 -04:00
Linus Walleij
d7554caa2c mmc: tmio_mmc: unmap with the proper sglen
According to the DMA-API you shall unmap the sglists with the same
sglist length as passed into the mapping function, not the
returned value from the mapping function.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:21 -04:00
Linus Walleij
2dc7ddc1e7 mmc: tmio_mmc: map DMA buffers on the DMA engine device
As established for the MMCI, it is proper to map the DMA buffers
on the DMA engine which is the one actually performing the DMA.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:18 -04:00
Linus Walleij
a5ece7d29d mmc: sh_mmcif: use dmaengine helpers, drop submit check
Use the new dmaengine helper functions, and drop the error check
on the returned cookier from the dmaengine - we recently
established that this is really not allowed to fail.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:16 -04:00
Linus Walleij
f38f94c6b2 mmc: sh_mmcif: rename and retype activity variable
The host_sglen is now actually used to keep track of whether DMA
is active or not, so rename and retype it to bool.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:14 -04:00
Linus Walleij
9dc3fb5e45 mmc: sh_mmcif: unmap with the proper sglen
According to the DMA-API you shall unmap the sglists with the same
sglist length as passed into the mapping function, not the
returned value from the mapping function.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:12 -04:00
Linus Walleij
1ed828dbb4 mmc: sh_mmcif: map DMA buffers on the DMA engine device
As established for the MMCI, it is proper to map the DMA buffers
on the DMA engine which is the one actually performing the DMA.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:09 -04:00
Linus Walleij
5328906aa2 mmc: atmel-mci: use dmaengine helper functions
Use the new dmaengine helpers to make the code more readable.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:07 -04:00
Linus Walleij
88ce4db313 mmc: atmel-mci: conform to DMA-API
Fixes the following:
- It is perfectly legal for the dma_map_sg() to return fewer
  entries than were passed in.
- Supply the returned numer of (possibly coalesced) entries to
  the device_pre_slave_sg() function.
- Use the proper original sg_len when unmapping the sglist
  in the error path.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:05 -04:00
Linus Walleij
266ac3f297 mmc: atmel-mci: map DMA sglist on the DMA engine
As established for the MMCI, it is proper to map the DMA buffers
on the DMA engine which is the one actually performing the DMA.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:02 -04:00
Manoj Iyer
5fd11c0754 mmc: sdhci: Add Ricoh e823 PCI ID
Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Cc: <stable@kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:49:00 -04:00
Will Newton
aadb9f4110 mmc: dw_mmc: Enable low-power mode for the card clock.
Setting this bit in the clock enable register will stop the clock
when the card is in the IDLE state.

Signed-off-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:53 -04:00
Will Newton
dd6c4b9807 mmc: dw_mmc: Run card detect tasklet during slot initialisation.
We need to run the card detect tasklet at the end of slot initialisation
as it is possible that a card has been inserted prior to boot, so we don't
see an insertion interrupt and now the card is sitting there inserted but
with no power to it.

Signed-off-by: Neil Jones <neil.jones@imgtec.com>
Signed-off-by: Will Newton <will.newton@imgtec.com>
Reviewed-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:51 -04:00
Fabio Estevam
170cba8cad mmc: mmc_mxc: Allow selection only for the correct platforms
Currently MMC_MXC driver can be selected by all i.MX devices.

Restrict its use only for the appropriate processors.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:49 -04:00
Simon Horman
a803d7fbc1 mmc: tmio_mmc: Improve readability of the output of pr_debug_status()
Reviewed-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:46 -04:00
Kyungmin Park
732f0e31db mmc: sdhci-s3c: Auto CMD12 support
Samsung SDHCI host controller supports the Auto CMD12.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15 13:48:25 -04:00
Paul Walmsley
21ace5452c Merge remote branches 'remotes/origin/pwrdm_clkdm_b_2.6.39', 'remotes/origin/pwrdm_add_can_lose_context_fns_2.6.39', 'remotes/origin/omap_device_a_2.6.39', 'remotes/origin/mmc_a_2.6.39', 'remotes/origin/hwmod_b_2.6.39', 'remotes/origin/dmtimer_a_2.6.39', 'remotes/origin/pwrdm_clkdm_a_2.6.39', 'remotes/origin/clkdm_statdep_omap4_2.6.39', 'remotes/origin/clk_a_2.6.39', 'remotes/origin/clk_autoidle_a_2.6.39', 'remotes/origin/clk_autoidle_b_2.6.39', 'remotes/origin/clk_b_2.6.39', 'remotes/origin/clk_clkdm_a_2.6.39', 'remotes/origin/misc_a_2.6.39', 'remotes/origin/for_2.6.39/omap3_hwmod_data' and 'remotes/origin/wdtimer_a_2.6.39' into tmp-integration-2.6.39-20110310-024 2011-03-10 22:41:28 -07:00
Esben Haabendal
290293eda2 of_mmc_spi: add card detect irq support
Signed-off-by: Esben Haabendal <eha@doredevelopment.dk>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-03-07 20:45:28 -07:00
Paul Walmsley
a05dcdb980 MMC: omap_hsmmc: enable interface clock before calling mmc_host_enable()
The code path entered via mmc_host_enable() can include register
accesses to the HSMMC IP block.  For this to work, both the device
interface clock and functional clock need to be enabled before
mmc_host_enable() is called.  However, omap_hsmmc_probe() calls
mmc_host_enable() before enabling the device interface clock.

Fix by calling mmc_host_enable() after the device interface clock is
enabled.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Madhusudhan Chikkature Rajashekar <madhu.cr@ti.com>
Cc: Adrian Hunter <adrian.hunter@nokia.com>
Cc: Kishore Kadiyala <kishore.kadiyala@ti.com>
Cc: Tero Kristo <Tero.Kristo@nokia.com>
Acked-by: Madhusudhan Chikkature Rajashekar <madhu.cr@ti.com>
2011-03-01 16:39:30 -07:00
Kishore Kadiyala
0005ae73cf OMAP: hsmmc: Rename the device and driver
Modifying the device & driver name from "mmci-omap-hs" to
"omap_hsmmc".

Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
Acked-by: Benoit Cousson<b-cousson@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-03-01 13:13:27 -08:00
Kishore Kadiyala
4621d5f8cb OMAP: adapt hsmmc to hwmod framework
OMAP2420 platform consists of mmc block as in omap1 and not the
hsmmc block as present in omap2430, omap3, omap4 platforms.
Removing all base address macro defines except keeping one for OMAP2420 and
adapting only hsmmc device registration and driver to hwmod framework.

Changes involves:
1) Remove controller reset in devices.c which is taken care of
   by hwmod framework.
2) Using omap-device layer to register device and utilizing data from
   hwmod data file for base address, dma channel number, Irq_number,
   device attribute.
3) Update the driver to use dev_attr to find whether controller
   supports dual volt cards

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
Reviewed-by: Balaji T K <balajitk@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
CC: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-03-01 13:13:25 -08:00
Grant Likely
1c48a5c93d dt: Eliminate of_platform_{,un}register_driver
Final step to eliminate of_platform_bus_type.  They're all just
platform drivers now.

v2: fix type in pasemi_nand.c (thanks to Stephen Rothwell)

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-02-28 13:22:46 -07:00
Russell King
aa25afad2c ARM: amba: make probe() functions take const id tables
Make Primecell driver probe functions take a const pointer to their
ID tables.  Drivers should never modify their ID tables in their
probe handler.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-23 16:24:14 +00:00
Grant Likely
9bde36afca Merge branch 'devicetree/next' into spi/next
To pick up removal of #ifdef around .of_match_table
2011-02-22 14:57:00 -07:00
Kishore Kadiyala
7715db5aec OMAP: hsmmc: Enable MMC4 and MMC5 on OMAP4 platforms
OMAP4 supports up to 5 MMC controllers, but only 3 of these were
initialized. MMC5 is used by wl12xx chip. So initialize MMC4 and MMC5.

Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: Panduranga Mallireddy <panduranga_mallireddy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-22 08:37:03 -08:00
Tony Lindgren
9238b6d8e8 Merge branches 'devel-cleanup', 'devel-board', 'devel-early-init' and 'devel-ti816x' into omap-for-linus 2011-02-16 11:32:38 -08:00
Grant Likely
c64eae9a73 Merge commit 'v2.6.38-rc3' into devicetree/next 2011-02-04 11:46:43 -07:00
Russell King
c8ebae3703 ARM: mmci: add dmaengine-based DMA support
Based on a patch from Linus Walleij.

Add dmaengine based support for DMA to the MMCI driver, using the
Primecell DMA engine interface.  The changes over Linus' driver are:

- rename txsize_threshold to dmasize_threshold, as this reflects the
  purpose more.
- use 'mmci_dma_' as the function prefix rather than 'dma_mmci_'.
- clean up requesting of dma channels.
- don't release a single channel twice when it's shared between tx and rx.
- get rid of 'dma_enable' bool - instead check whether the channel is NULL.
- detect incomplete DMA at the end of a transfer.  Some DMA controllers
  (eg, PL08x) are unable to be configured for scatter DMA and also listen
  to all four DMA request signals [BREQ,SREQ,LBREQ,LSREQ] from the MMCI.
  They can do one or other but not both.  As MMCI uses LBREQ/LSREQ for the
  final burst/words, PL08x does not transfer the last few words.
- map and unmap DMA buffers using the DMA engine struct device, not the
  MMCI struct device - the DMA engine is doing the DMA transfer, not us.
- avoid double-unmapping of the DMA buffers on MMCI data errors.
- don't check for negative values from the dmaengine tx submission
  function - Dan says this must never fail.
- use new dmaengine helper functions rather than using the ugly function
  pointers directly.
- allow DMA code to be fully optimized away using dma_inprogress() which
  is defined to constant 0 if DMA engine support is disabled.
- request maximum segment size from the DMA engine struct device and
  set this appropriately.
- removed checking of buffer alignment - the DMA engine should deal with
  its own restrictions on buffer alignment, not the individual DMA engine
  users.
- removed setting DMAREQCTL - this confuses some DMA controllers as it
  causes LBREQ to be asserted for the last seven transfers, rather than
  six SREQ and one LSREQ.
- removed burst setting - the DMA controller should not burst past the
  transfer size required to complete the DMA operation.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-04 13:25:49 +00:00
Russell King
51d4375dd7 ARM: mmci: no need for separate host->data_xfered
We don't need to store the number of bytes transferred in our host
structure - we can store this directly in data->bytes_xfered.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-04 13:25:48 +00:00
Russell King
c4d877c1b3 ARM: mmci: avoid unnecessary switch to data available PIO interrupts
We don't need to switch to data available interrupts if there's at
least half a FIFO depth worth of data remaining, as we'll still get
the FIFO half full interrupt.  Keep this interrupt masked off until
we have less than half the FIFO depth worth of data remaining.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-04 13:25:48 +00:00
Russell King
7d7aa23cf0 ARM: mmci: no need to call flush_dcache_page() with sg_miter API
The sg_miter API provides the required cache maintainence, so we don't
need to do that ourselves.  Remove the unnecessary additional cache
maintainence.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-04 13:25:47 +00:00
Russell King
c8afc9d59c ARM: mmci: avoid reporting too many completed bytes on fifo overrun
The data counter counts the number of bytes transferred on the MMC bus.
When a FIFO overrun occurs, we will not have transferred a FIFOs-worth
of data to memory, and so the data counter will be a FIFOs-worth ahead.
If this occurs on a block boundary, we will report one too many sectors
as successful.  Fix this.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-04 13:25:41 +00:00
Russell King
613b152c63 ARM: mmci: round down the bytes transferred on error
We should not report incomplete blocks on error.  Return the number of
bytes successfully transferred, rounded down to the nearest block.

Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31 10:53:37 +00:00
Russell King
ccff9b5182 ARM: mmci: complete the transaction on error
When we encounter an error, make sure we complete the transaction
otherwise we'll leave the request dangling.

Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-31 10:53:23 +00:00