Commit Graph

31 Commits

Author SHA1 Message Date
Krzysztof Kozlowski
ed425fc46b mmc: davinci: Constify platform_device_id
The platform_device_id is not modified by the driver and core uses it as
const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-06-01 09:06:49 +02:00
Wolfram Sang
bb0d20e794 mmc: host: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:20:56 +02:00
Sachin Kamat
6fad51284d mmc: davinci: Remove redundant of_match_ptr
The data structure of_match_ptr() protects is always compiled in.
Hence of_match_ptr() is not needed.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
2014-02-25 15:42:55 -05:00
Ulf Hansson
5ffdeea522 mmc: davinci_mmc: Move away from using deprecated APIs
Suspend and resume of cards are being handled from the protocol layer
and consequently the mmc_suspend|resume_host APIs are deprecated.

This means we can simplify the suspend|resume callbacks by removing the
use of the deprecated APIs.

Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Manjunathappa, Prakash <prakash.pm@ti.com>
Cc: davinci-linux-open-source@linux.davincidsp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:38 -04:00
Linus Torvalds
bfffbea1aa MMC highlights for 3.11:
Core:
  - Add support for eMMC 5.1 devices.
  - Add MMC_CAP_AGGRESSIVE_PM capability for aggressive power management
    of eMMC/SD between requests, using runtime PM.
  - Add an ioctl to perform the eMMC 4.5 Sanitize command; sample code at:
    git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git
 
 Drivers:
  - dw_mmc: Add support for Rockchip's Cortex-A9 SoCs.
  - dw_mmc: Add support for Altera SoCFPGAs.
  - sdhci-esdhc-imx: Add support for 8-bit bus width, non-removable cards.
  - sdhci-bcm-kona: New driver for Broadcom Kona (281xx) SoCs.
  - sdhi/tmio: Add DT DMA support.
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Merge tag 'mmc-updates-for-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "MMC highlights for 3.11:

  Core:
   - Add support for eMMC 5.1 devices
   - Add MMC_CAP_AGGRESSIVE_PM capability for aggressive power
     management of eMMC/SD between requests, using runtime PM
   - Add an ioctl to perform the eMMC 4.5 Sanitize command.  Sample code
     at:

       git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git

  Drivers:
   - dw_mmc: Add support for Rockchip's Cortex-A9 SoCs
   - dw_mmc: Add support for Altera SoCFPGAs
   - sdhci-esdhc-imx: Add support for 8-bit bus width, non-removable
     cards
   - sdhci-bcm-kona: New driver for Broadcom Kona (281xx) SoCs
   - sdhi/tmio: Add DT DMA support"

* tag 'mmc-updates-for-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (87 commits)
  mmc: bcm281xx SDHCI driver
  mmc: sdhci: add card_event callback to sdhci
  mmc: core: Fixup Oops for SDIO shutdown
  mmc: sdhci-pci: add another device id
  mmc: esdhc: Fix bug when writing to SDHCI_HOST_CONTROL register
  mmc: esdhc: Add support for 8-bit bus width and non-removable card
  mmc: core: production year for eMMC 4.41 and later
  mmc: omap: remove unnecessary #if 0's
  mmc: sdhci: fix ctrl_2 on super-speed selection
  mmc: dw_mmc-pltfm: add Rockchip variant
  mmc: dw_mmc-pltfm: move probe and remove below dt match table
  mmc: dw_mmc-pltfm: remove static from dw_mci_pltfm_remove
  mmc: sdhci-acpi: add support for eMMC hardware reset for HID 80860F14
  mmc: sdhci-pci: add support for eMMC hardware reset for BYT eMMC.
  mmc: dw_mmc: Add support DW SD/MMC driver on SOCFPGA
  mmc: sdhci: fix caps2 for HS200
  sdhci-pxav3: Fix runtime PM initialization
  mmc: core: Add DT-bindings for MMC_CAP2_FULL_PWR_CYCLE
  mmc: core: Invent MMC_CAP2_FULL_PWR_CYCLE
  mmc: core: Enable power_off_notify for eMMC shutdown sequence
  ...
2013-07-10 11:16:00 -07:00
Matt Porter
3ad7a42d5a ARM: davinci: move private EDMA API to arm/common
Move mach-davinci/dma.c to common/edma.c so it can be used
by OMAP (specifically AM33xx) as well.

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Chris Ball <cjb@laptop.org> # davinci_mmc.c
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
[nsekhar@ti.com: dropped davinci sffsdr changes]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-06-18 10:52:03 +05:30
Jingoo Han
113a87f868 mmc: remove unnecessary platform_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-05-26 14:23:23 -04:00
Linus Torvalds
173192958d MMC highlights for 3.10:
Core:
  - Introduce MMC_CAP2_NO_PRESCAN_POWERUP to allow skipping mmc_power_up()
    at boot/initialization time if it's already happened, for performance
    (faster boot time) reasons.
  - Fix a bit width test failure that resulted in old eMMC cards being put
    into 1-bit mode when 4-bit mode was available.
  - Expose fwrev/hwrev for MMCv4 parts.
  - Improve card removal logic in the case where the card's removed slowly;
    we were missing card removal events if the card retained contact with
    the slot pads for long enough to reply to a CMD13 while being removed.
 
 Drivers:
  - davinci_mmc: Support using PIO instead of DMA.
  - dw_mmc: Add support for Exynos4412.
  - mxcmmc: DT support, use slot-gpio API.
  - mxs-mmc: Add broken-cd/cd-inverted/non-removable DT property support.
  - sdhci-sirf: New sdhci-pltfm driver for CSR SiRF SoCs:
     SiRFprimaII: unicore ARM Cortex-A9
     SiRFatlas6: unicore ARM Cortex-A9
     SiRFmarco: dual core ARM Cortex-A9 SMP
  - sdhci-tegra: Add support for Tegra114 platforms, use mmc_of_parse().
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Merge tag 'mmc-updates-for-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC update from Chris Ball:
 "MMC highlights for 3.10:

  Core:
   - Introduce MMC_CAP2_NO_PRESCAN_POWERUP to allow skipping
     mmc_power_up() at boot/initialization time if it's already
     happened, for performance (faster boot time) reasons.
   - Fix a bit width test failure that resulted in old eMMC cards being
     put into 1-bit mode when 4-bit mode was available.
   - Expose fwrev/hwrev for MMCv4 parts.
   - Improve card removal logic in the case where the card's removed
     slowly; we were missing card removal events if the card retained
     contact with the slot pads for long enough to reply to a CMD13
     while being removed.

  Drivers:
   - davinci_mmc: Support using PIO instead of DMA.
   - dw_mmc: Add support for Exynos4412.
   - mxcmmc: DT support, use slot-gpio API.
   - mxs-mmc: Add broken-cd/cd-inverted/non-removable DT property
     support.
   - sdhci-sirf: New sdhci-pltfm driver for CSR SiRF SoCs:
       SiRFprimaII: unicore ARM Cortex-A9
       SiRFatlas6: unicore ARM Cortex-A9
       SiRFmarco: dual core ARM Cortex-A9 SMP
   - sdhci-tegra: Add support for Tegra114 platforms, use
     mmc_of_parse()"

* tag 'mmc-updates-for-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (66 commits)
  mmc: sdhci-tegra: fix MODULE_DEVICE_TABLE
  mmc: core: fix init controller performance regression, updated patch
  mmc: mxcmmc: enable DMA support on mpc512x
  mmc: mxcmmc: constify mxcmci_devtype
  mmc: mxcmmc: use slot-gpio API for write-protect detection
  mmc: mxcmmc: add mpc512x SDHC support
  mmc: mxcmmc: fix race conditions for host->req and host->data access
  mmc: mxcmmc: DT support
  mmc: dw_mmc: let device core setup the default pin configuration
  mmc: mxs-mmc: add broken-cd property
  mmc: mxs-mmc: add non-removable property
  mmc: mxs-mmc: add cd-inverted property
  mmc: core: call pm_runtime_put_noidle in pm_runtime_get_sync failed case
  mmc: mxcmmc: Fix bug when card is present during boot
  mmc: core: fix performance regression initializing MMC host controllers
  Revert "mmc: core: wait while adding MMC host to ensure root mounts successfully"
  mmc: atmel-mci: pio hang on block errors
  mmc: core: Fix bit width test failing on old eMMC cards
  mmc: dw_mmc: Use pr_info instead of printk
  mmc: dw_mmc: Check return value of regulator_enable
  ...
2013-05-04 13:45:17 -07:00
Manjunathappa, Prakash
7b43da4cfd mmc: davinci_mmc: add DT support
Adds device tree support for davinci_mmc. Also add binding documentation.
As of now tested for non-dma PIO mode and without GPIO card_detect/
write_protect option because of dependencies on EDMA and GPIO module DT
support.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Cc: linux-mmc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: davinci-linux-open-source@linux.davincidsp.com
Cc: devicetree-discuss@lists.ozlabs.org
Cc: cjb@laptop.org
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: mporter@ti.com
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-04-04 16:55:05 +05:30
Manjunathappa, Prakash
d7ca4c755a ARM: davinci: mmc: derive version information from device name
Remove specifying mmc controller IP version information via platform
data, instead specify device name so that driver derives it from
platform_device_id table. Also change the clock node name to match
the changed dev_id.
Tested on da850-evm to make sure driver loads without clk_get failures.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-04-03 09:42:16 +05:30
Jingoo Han
d4bf63251c mmc: davinci_mmc: use module_platform_driver_probe()
This patch uses module_platform_driver_probe() macro which makes
the code smaller and simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-03-22 12:29:01 -04:00
Manjunathappa, Prakash
e3e020f8ac mmc: davinci_mmc: allow driver to work without DMA resource
Do not return probe failure with missing DMA resources, allow driver
to work in PIO mode.  Tested on da850-evm by mounting partition
followed by file creation and deletion.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-03-22 12:05:16 -04:00
Linus Torvalds
943c2acea5 MMC highlights for 3.7:
Core:
  - Add DT properties for card detection (broken-cd, cd-gpios, non-removable)
  - Don't poll non-removable devices
  - Fixup/rework eMMC sleep mode/"power off notify" feature
  - Support eMMC background operations (BKOPS).  To set the one-time
    programmable fuse that enables bkops on an eMMC that doesn't already
    have it set, you can use the "mmc bkops enable" command in:
      git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git
 
 Drivers:
  - atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree support
  - bfin_sdh: Add support for the controller in bf60x
  - dw_mmc: Support Samsung Exynos SoCs
  - eSDHC: Add ADMA support
  - sdhci: Support testing a cd-gpio (from slot-gpio) instead of presence bit
  - sdhci-pltfm: Support broken-cd DT property
  - tegra: Convert to only supporting DT (mach-tegra has gone DT-only)
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Merge tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "Core:
   - Add DT properties for card detection (broken-cd, cd-gpios,
     non-removable)
   - Don't poll non-removable devices
   - Fixup/rework eMMC sleep mode/"power off notify" feature
   - Support eMMC background operations (BKOPS).  To set the one-time
     programmable fuse that enables bkops on an eMMC that doesn't
     already have it set, you can use the "mmc bkops enable" command in:

       git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git

  Drivers:
   - atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree
     support
   - bfin_sdh: Add support for the controller in bf60x
   - dw_mmc: Support Samsung Exynos SoCs
   - eSDHC: Add ADMA support
   - sdhci: Support testing a cd-gpio (from slot-gpio) instead of
     presence bit
   - sdhci-pltfm: Support broken-cd DT property
   - tegra: Convert to only supporting DT (mach-tegra has gone DT-only)"

* tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (67 commits)
  mmc: core: Fixup broken suspend and eMMC4.5 power off notify
  mmc: sdhci-spear: Add clk_{un}prepare() support
  mmc: sdhci-spear: add device tree bindings
  mmc: sdhci-s3c: Add clk_(enable/disable) in runtime suspend/resume
  mmc: core: Replace MMC_CAP2_BROKEN_VOLTAGE with test for fixed regulator
  mmc: sdhci-pxav3: Use sdhci_get_of_property for parsing DT quirks
  mmc: dt: Support "broken-cd" property in sdhci-pltfm
  mmc: sdhci-s3c: fix the wrong number of max bus clocks
  mmc: sh-mmcif: avoid oops on spurious interrupts
  mmc: sh-mmcif: properly handle MMC_WRITE_MULTIPLE_BLOCK completion IRQ
  mmc: sdhci-s3c: Fix crash on module insertion for second time
  mmc: sdhci-s3c: Enable only required bus clock
  mmc: Revert "mmc: dw_mmc: Add check for IDMAC configuration"
  mmc: mxcmmc: fix bug that may block a data transfer forever
  mmc: omap_hsmmc: Pass on the suspend failure to the PM core
  mmc: atmel-mci: AP700x PDC is not connected to MCI
  mmc: atmel-mci: DMA can be used with other controllers
  mmc: mmci: use clk_prepare_enable and clk_disable_unprepare
  mmc: sdhci-s3c: Add device tree support
  mmc: dw_mmc: add support for exynos specific implementation of dw-mshc
  ...
2012-10-10 10:58:42 +09:00
Matt Porter
5413da811f mmc: davinci_mmc: convert to DMA engine API
Removes use of the DaVinci EDMA private DMA API and replaces
it with use of the DMA engine API.

Signed-off-by: Matt Porter <mporter@ti.com>
Tested-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-19 16:29:44 +08:00
Arnd Bergmann
ec2a0833e5 ARM: davinci: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the davinci include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: "Ben Dooks" <ben-linux@fluff.org>
Cc: "Wolfram Sang" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Liam Girdwood <lrg@ti.com>
Cc: davinci-linux-open-source@linux.davincidsp.com
2012-09-14 11:16:54 +02:00
Jan Luebbe
7f8bea7f75 mmc: davinci_mmc: set MODULE_ALIAS to allow autoloading
Davinci MMC platform devices (as in mach-davinci/devices-da8xx.c) use
"davinci_mmc" as their name. To allow autoloading of the relevant
driver, the module needs to set the MODULE_ALIAS.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:58 -04:00
Ido Yariv
ee698f5034 mmc: davinci: Poll status for small size transfers
For small size non-dma sdio transactions, it is sometimes better to poll
the mmc host and avoid interrupts altogether. Polling lowers the number
of interrupts and context switches. Tests have shown that for small
transactions, only a few polling iterations are needed, so this is worth
while.

Signed-off-by: Ido Yariv <ido@wizery.com>
Tested-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:11 -04:00
Ido Yariv
be7b5622e6 mmc: davinci: Eliminate spurious interrupts
The davinci mmc interrupt handler fills the fifo, as long as the DXRDY
or DRRDY bits are set in the status register.

If interrupts fire during this loop, they will be handled by the
handler, but the interrupt controller will still buffer these. As a
result, the handler will be called again to serve these needlessly. In
order to avoid these spurious interrupts, keep interrupts masked while
filling the fifo.

Signed-off-by: Ido Yariv <ido@wizery.com>
Tested-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:11 -04:00
Adrian Hunter
907d2e7cc7 mmc: start removing enable / disable API
Most parts of the enable / disable API are no longer used and
can be removed.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-27 12:20:03 -04:00
Ido Yariv
4a9de8ad2c mmc: davinci: Add support for set_power callback
Some devices connected to the MMC bus are power controlled by external
means. For instance, an SDIO device may be powered down/up by an
external gpio line.

In order to avoid toggling power from within the MMC host driver, add a
set_power callback function, which will be called by set_ios upon
powering down/up.

Signed-off-by: Ido Yariv <ido@wizery.com>
CC: Chris Ball <cjb@laptop.org>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2011-09-17 15:53:23 +05:30
Alagu Sankar
f9db92cb80 mmc: davinci: add support for SDIO irq handling
This patch adds support for handling SDIO interrupt on DaVinci MMC/SD
controller.

The patch has been tested on DM355 and DA850 EVMs with Marvell Libertas
based SDIO wireless LAN card.

Signed-off-by: Alagu Sankar <alagusankar@embwise.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-09 19:16:18 -05:00
Joe Perches
150ee73d1b mmc: davinci_mmc: Remove unnecessary semicolon
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08 22:48:04 -05:00
Martin K. Petersen
a36274e018 mmc: Remove distinction between hw and phys segments
We have deprecated the distinction between hardware and physical
segments in the block layer.  Consolidate the two limits into one in
drivers/mmc/.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2010-10-23 21:11:11 +08:00
Matt Fleming
1a13f8fa76 mmc: remove the "state" argument to mmc_suspend_host()
Even though many mmc host drivers pass a pm_message_t argument to
mmc_suspend_host() that argument isn't used the by MMC core.  As host
drivers are converted to dev_pm_ops they'll have to construct
pm_message_t's (as they won't be passed by the PM subsystem any more) just
to appease the mmc suspend interface.

We might as well just delete the unused paramter.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Michal Miroslaw <mirq-linux@rere.qmqm.pl>ZZ
Acked-by: Sascha Sommer <saschasommer@freenet.de>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:40 -07:00
Chaithrika U S
bbce5802af davinci: mmc: updates to suspend/resume implementation
Improve the suspend and resume callbacks in DaVinci MMC host controller
driver.  Modify the reset status of the contorller and clock during
suspend and resume.  Also migrate the power management callbacks from
platform driver to dev_pm_ops structure.

Tested on DA850/OMAP-L138 EVM.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Vipin Bhandari <vipin.bhandari@ti.com>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:39 -07:00
Chaithrika U S
06de845f72 davinci: mmc: add a function to control reset state of the controller
Add a helper function which will aid in changing the reset
status of the controller.

Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Vipin Bhandari <vipin.bhandari@ti.com>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:39 -07:00
Sudhakar Rajashekhara
ca2afb6dbe davinci: mmc: pass number of SG segments as platform data
On some platforms like DM355, the number of EDMA parameter slots available
for EDMA_SLOT_ANY usage are few.  In such cases, if MMC/SD uses 16 slots
for each instance of MMC controller, then the number of slots available
for other modules will be very few.

By passing the number of EDMA slots to be used in MMC driver from platform
data, EDMA slots available for other purposes can be controlled.

Most of the platforms will not use this platform data variable.  But on
DM355, as the number of EDMA resources available is limited, the number of
scatter- gather segments used inside the MMC driver can be 8 (passed as
platform data) instead of 16.  On DM355, when the number of scatter-gather
segments was reduced to 8, I saw a performance difference of about
0.25-0.4 Mbytes/sec during write.  Read performance variations were
negligible.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:39 -07:00
Vipin Bhandari
132f10746c davinci: MMC: add support for 8bit MMC cards
Add support for 8bit MMC cards.  The controller data width is configurable
depending on the wires setting in the platform data structure.

MMC 8bit is tested on OMAPL137 and MMC 4bit is tested on OMAPL138 EVM.

Signed-off-by: Vipin Bhandari <vipin.bhandari@ti.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Chaithrika U S <chaithrika@ti.com>
Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06 11:26:36 -08:00
Chaithrika U S
7e30b8decb davinci: mmc: add cpufreq support
Add cpufreq support to MMC driver. The clock divider value has to be
modified according to the controller input frequency.

Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Cc: Linus Walleij <linus.ml.walleij@gmail.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15 08:53:34 -08:00
Sudhakar Rajashekhara
3d348aaf5b mmc: davinci: modify data types of EDMA related variables
Currently DaVinci EDMA driver supports multiple EDMA channel controller
instances.  edma_alloc_channel() api returns a 32 bit value which has the
channel controller number in MSB and the EDMA channel number in LSB.  The
variables which store the value returned by edma_alloc_channel() have to
be 32 bit wide now.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Acked-by: Vipin Bhandari <vipin.bhandari@ti.com>
Cc: Purshotam Kumar <purushotam@ti.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15 08:53:34 -08:00
Vipin Bhandari
b4cff4549b DaVinci: MMC: MMC/SD controller driver for DaVinci family
Add support for MMC/SD controller driver for all DaVinci family SoC.  This
patch supports davinci family SoC's DM6446, DM355, DM365 and
DA830/OMAPL137.

The patch has been tested on DM355 EVM.

The MMCSD controller specifications for DM355 can be found at
http://focus.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=spruee2c

Signed-off-by: Vipin Bhandari <vipin.bhandari@ti.com>
Signed-off-by: Purshotam Kumar <purushotam@ti.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15 08:53:34 -08:00