Commit Graph

3060 Commits

Author SHA1 Message Date
Ulf Hansson
1eeaadf3fe mmc: dw_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: Seungwon Jeon <tgih.jun@samsung.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:39 -04:00
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
Ulf Hansson
d978a2b631 mmc: cb710: 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: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:37 -04:00
Ulf Hansson
15a6af4dc0 mmc: bfin_sdh: 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: Sonic Zhang <sonic.zhang@analog.com>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:36 -04:00
Ulf Hansson
1e63d48542 mmc: au1xmmc: 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: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:35 -04:00
Ulf Hansson
914af7c2e5 mmc: atmel-mci: Remove redundant suspend and resume callbacks
Suspend and resume of cards are handled by the protocol layer and
consequently the mmc_suspend|resume_host APIs are marked as deprecated.

While moving away from using the deprecated APIs, there are nothing
left to be done for the suspend and resume callbacks, so remove them.

Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:33 -04:00
Ulf Hansson
bbd43682eb mmc: core: Signal wakeup event at card insert/removal
We want to give user space provision to fully consume a card
insert/remove event, when the event was caused by a wakeup irq.

By signaling the wakeup event for a time of 5 s for devices configured
as wakeup capable, we likely will be prevent a sleep long enough to let
user space consume the event.

To enable this feature, host drivers must thus configure their devices
as wakeup capable.

This is a reworked implementation of the old wakelocks for the mmc
subsystem, originally authored by Colin Cross and San Mehat for the
Android kernel. Zoran Markovic shall also be given cred for recently
re-trying to upstream this feature.

Cc: San Mehat <san@google.com>
Cc: Colin Cross <ccross@android.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Zoran Markovic <zoran.markovic@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Zoran Markovic <zoran.markovic@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:32 -04:00
Ulf Hansson
726d6f2374 mmc: core: Collect common code for card ocr validation
Since mmc_select_voltage now only gets called from the attach sequence,
it makes sense to move the out of spec validations of the card ocr into
this function.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:31 -04:00
Ulf Hansson
ce69d37b7d mmc: core: Prevent violation of specs while initializing cards
According to eMMC/SD/SDIO specs, the VDD (VCC) voltage level must be
maintained during the initialization sequence. If we want/need to tune
the voltage level, a complete power cycle of the card must be executed.

Most host drivers conforms to the specifications by only allowing to
change VDD voltage level at the MMC_POWER_UP state, but some also cares
about MMC_POWER_ON state, which they should'nt. This patch will not
break those drivers, but they could clean up code to better reflect
what is expected from the protocol layer.

A big re-work of the mmc_select_voltage function is done to only change
VDD voltage level if the host supports MMC_CAP2_FULL_PWR_CYCLE.
Otherwise only validation of the host and card ocr mask will be done.

A very nice side-effect of this patch is that we now don't need to
reset the negotiated ocr mask at the mmc_power_off function, since now
it will actually reflect the present voltage level, which safely can be
used at the next power up and re-initialization. Moreover, we then only
need to execute mmc_select_voltage from the attach sequence.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:30 -04:00
Ulf Hansson
6904115095 mmc: core: Move cached value of the negotiated ocr mask to card struct
The negotiated ocr mask is directly related to the card. Once a card
gets removed, the mask shall be dropped. By moving the cache of the ocr
mask from the host struct to the card struct we have accomplished this.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:29 -04:00
Ulf Hansson
db4a0d0512 mmc: core: Cleanup code for setting ocr mask for SDIO
At several places in mmc_sdio_init_card function the cached mask in
host->ocr were being updated. To simplify code, we make use of an
local ocr parameter instead.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:28 -04:00
Ulf Hansson
ec2ed70062 mmc: core: Remove unnecessary retry mechanism at SDIO attach
The retry and fallback mechanism when failing to switch to 1.8V
signaling voltage is handled by the SDIO card init function. Thus we
can remove the duplicated old code from the attach function.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:27 -04:00
Ulf Hansson
0f791fdad8 mmc: core: Let mmc_set_signal_voltage take ocr as parameter
This is yet another step of restructure code to be able to fixup the
setup of the negotiated ocr mask.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:26 -04:00
Ulf Hansson
4a065193c4 mmc: core: Let mmc_power_up|cycle take ocr as parameter
As a step to fixup the setup of the negotiated ocr mask, we need the
mmc_power_up|cycle functions to take the ocr as a parameter.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:25 -04:00
Ulf Hansson
878e200bbb mmc: core: Do not poll for busy with status cmd for all switch cmds
Some switch operations like poweroff notify, shall according to the
spec not be followed by any other new commands. For these cases and
when the host does'nt support MMC_CAP_WAIT_WHILE_BUSY, we must not
send status commands to poll for busy detection. Instead wait for
the stated timeout from the EXT_CSD before completing the request.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:24 -04:00
Eric Ernst
d052068a0b mmc: sdhci-pci: Add SDIO/MMC device ID support for Intel Clovertrail
This patch adds intel_mid clovertrail SDIO and eMMC device
IDs to the sdhci-pci driver.

Signed-off-by: Eric Ernst <eric.ernst@linux.intel.com>
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:23 -04:00
Balaji T K
6a6caac6de mmc: omap_hsmmc: remove unused no_off
With lazy disable gone, no_off is not used any more in omap_hsmmc

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:22 -04:00
Balaji T K
ed16418215 mmc: omap_hsmmc: correct max value of clkd
clock divisor can take a max value of 1023.  Update code so that card
init can be handled at f_min even at higher IP clock frequencies from
which clock to the card is derived.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:20 -04:00
Jianpeng Ma
1e881786c9 mmc: omap_hsmmc: fix timeout for cmd and data soft reset
With HSMMC_HAS_UPDATED_RESET reset of cmd/data (SRC/SRD) can be to
quick and can be missed resulting in wait for software timeout.
With cpu_relax timeout can be long and unpredictable. Use udelay
instead for timeout implementation.

Reported-by: Yuzheng Ma <mayuzheng@kedacom.com>
Tested-by: Yuzheng Ma <mayuzheng@kedacom.com>
Reviewed-by: Hein Tibosch <hein_tibosch@yahoo.es>
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:19 -04:00
Tony Lindgren
0a82e06e61 mmc: omap_hsmmc: context save and restore for DT
We want to get rid of the omap specific platform init code
callbacks as they don't play nice with device tree.

Convert the context loss check to be based on a
register state detection instead.

Cc: Andreas Fenkart <afenkart@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
[add check for CON and HCTL in context save and restore function]
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:18 -04:00
Balaji T K
e002264f7e mmc: omap_hsmmc: Fix pbias_disable for omap4
pbias_disable is set to protect the mmc pbias i/o cells in DT boot
by preventing voltage switch. Currently pbias_disable is enabled only
for omap3 and not for omap4 due to reg_offset difference of 0x100.
Enable pbias_disable for omap4+ too by using res->start
which does not include the reg_offset.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:26:17 -04:00
Dong Aisheng
372c463487 mmc: sdhci: remove unneeded call when have preset value quirk
Remove unneeded call of call sdhci_enable_preset_value when having
SDHCI_QUIRK2_PRESET_VALUE_BROKEN.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:23 -04:00
Dong Aisheng
69ed60e07b mmc: sdhci-esdhc-imx: add preset value quirk for mx6
The i.MX6 does not support preset value feature.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:20 -04:00
Dong Aisheng
888824bb63 mmc: sdhci-esdhc-imx: enable SDR50 tuning for imx6q/dl
The imx6q/dl supports SDR50 tunning, enable it for a better timing
on SDR50 mode.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:16 -04:00
Dong Aisheng
602519b2bd mmc: sdhci-esdhc-imx: add delay line setting support
The DLL(Delay Line) is newly added to assist in sampling read data.
The DLL provides the ability to programmatically select a quantized
delay (in fractions of the clock period) regardless of on-chip variations
such as process, voltage and temperature (PVT).

This patch adds a user interface to set slave delay line via device tree.
It's usually used in high speed mode like mmc DDR mode when the signal
quality is not good caused by board design, e.g. the signal path is too
long.  User can manually set delay line to find a suitable data sampling
window for card to work properly.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:13 -04:00
Dong Aisheng
de5bdbffd8 mmc: sdhci-esdhc-imx: add DDR mode support for mx6
When DDR mode is enabled, the initial pre_div should be 2.
And the pre_div value should be changed accordingly
from
...
02h) Base clock divided by 4
01h) Base clock divided by 2
00h) Base clock divided by 1
to
..
02h) Base clock divided by 8
01h) Base clock divided by 4
00h) Base clock divided by 2

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:10 -04:00
Dong Aisheng
114f2bf6a1 mmc: sdhci: report error once the maximum tuning loops exhausted or timeout
The original code missed to report an error when the maximum tuning
loops exhausted or timeout, it will cause the upper layer to wrongly
think the tuning process is passed.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:06 -04:00
Dong Aisheng
6b4fb6712a mmc: sdhci-esdhc-imx: fix reading cap_1 register value for mx6sl
When reading CAP_1 register for mx6sl, ignore bit[0-15] as it stores
CAP_2 register value which is new introduced in mx6sl.

Without this fix, the max clock for mx6sl may not be correct since
it's wrongly calculated by reading CAP_1 register.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:58:03 -04:00
Dong Aisheng
6e9fd28e1f mmc: sdhci-esdhc-imx: add std tuning support for mx6sl
The mx6sl supports standard sdhci tuning, then esdhc_executing_tuning
is only needed for mx6q/dl. We introduce is_imx6_usdhc() and
is_imx6sl_usdhc() to handle the difference.

The standard tuning is enabled by setting ESDHC_TUNE_CTRL_STD_TUNING_EN bit
in new register ESDHC_TUNE_CTRL and operates with new tuning bits
defined in SDHCI_ACMD12_ERR register.

Note: mx6sl can also work on the old manually tuning mode as mx6q/dl if
not enable standard tuning mode.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:58 -04:00
Shawn Guo
f47c4bbfa2 mmc: sdhci-esdhc-imx: create struct esdhc_soc_data
Create a struct esdhc_soc_data with moving 'flags' field from
pltfm_imx_data into it, and pass the pointer of this SoC specific data
structure through of_device_id.data directly, so that the translation
from enum imx_esdhc_type to flags can be saved.

With the change, enum imx_esdhc_type can be eliminated, since we can
implement the is_imx*_esdhc() by checking the esdhc_soc_data pointer.
The unused is_imx35_esdhc() and is_imx51_esdhc() are also removed, and the
others are kept there as we will need to use them to handle some small
register differences later, where use of new flags might be a little
overkilled.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:55 -04:00
Shawn Guo
3770ee8f95 mmc: sdhci-esdhc-imx: pdev->id_entry should be immutable
As a good practice, device driver should not modify pdev->id_entry but
keep it immutable.  Let's assign of_device_id.data with imx_esdhc_type
constants directly, so that we do not have to manipulate pdev->id_entry
in .probe().

As the result, sdhci-esdhc-imx53 and sdhci-usdhc-imx6q can be removed
from platform_device_id table now, since they will only probe from
device tree.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:51 -04:00
Shawn Guo
9d61c0092c mmc: sdhci-esdhc-imx: add flag ESDHC_FLAG_USDHC
Add flag ESDHC_FLAG_USDHC to tell that the ESDHC is actually an USDHC
block, and replace the is_imx6q_usdhc() occurrences with inline function
esdhc_is_usdhc() which checks the flag.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:48 -04:00
Shawn Guo
31fbb30135 mmc: sdhci-esdhc-imx: add flag ESDHC_FLAG_ENGCM07207
Just like the use of the flag ESDHC_FLAG_MULTIBLK_NO_INT, let's add
another flag ESDHC_FLAG_ENGCM07207 to enable the workaround for errata
ENGcm07207 and set the flag for i.MX25 and i.MX35 ESDHC.

While at it, let's use BIT() macro for ESDHC_FLAG_MULTIBLK_NO_INT as
well.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:43 -04:00
Sonic Zhang
e69e4dff1c mmc: bfin_sdh: Forgot to write SDH_CFG register in function set_ios.
The DMA operation in SDIO CMD53 may fail because the 4 bit SDIO mode
is not set up correctly on BF548.
Remove 2 blank lines as well.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:39 -04:00
Axel Lin
7b2399034a mmc: wmt-sdmmc: Simplify wmt_set_sd_power implementation
Simplify the code to set/clear BM_SD_OFF bit:

          | power_inverted: 0  | power_inverted: 1
-------------------------------------------------
enable: 0 | SET BM_SD_OFF      | CLEAR BM_SD_OFF
-------------------------------------------------
enable: 1 | CLEAR BM_SD_OFF    | SET BM_SD_OFF

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:15 -04:00
David Cohen
8776a165d1 mmc: sdhci-pci: add Intel Merrifield support
Implement initial SDHCI Intel Merrifield support.  This patch is based
on previous one from Yunpeng Gao <yunpeng.gao@intel.com>.

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-21 15:57:03 -04:00
Dong Aisheng
e76b855956 mmc: sdhci-esdhc-imx: set actual_clock in clock setting
This enables access the actual_clock via sys.
root@imx6qsabreauto:~# cat /sys/kernel/debug/mmc0/ios
clock:          198000000 Hz
actual clock:   198000000 Hz
vdd:            17 (2.9 ~ 3.0 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      2 (4 bits)
timing spec:    6 (sd uhs SDR104)
signal voltage: 0 (1.80 V)

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-27 10:31:48 -04:00
Dong Aisheng
5f7886c5ef mmc: sdhci-esdhc-imx: correct pre_div for imx6q
According to spec, the pre_div for imx6q should be 1, or the biggest
clock rate we can get is a half of host clock rate.  This may cause
we can not get the proper clock rate as we want.  e.g. if the desired
clock is 200Mhz, however, the host clock is 200Mhz too, then it causes
the actual clock we get is 100Mhz due to pre_div is 2.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:57:29 -04:00
Dong Aisheng
ad93220de7 mmc: sdhci-esdhc-imx: change pinctrl state according to uhs mode
Without proper pinctrl state, the card may not be able to work
on high speed stablely. e.g. SDR104.

This patch add pinctrl state switch code according to different
uhs mode include 100mhz sate, 200mhz sate and normal state
(50Mhz and below).

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:57:28 -04:00
Dong Aisheng
0322191e62 mmc: sdhci-esdhc-imx: add sd3.0 SDR clock tuning support
Freescale i.MX6Q/DL uSDHC clock tuning progress is a little different from
the standard tuning process defined in host controller spec v3.0.
Thus we use platform_execute_tuning instead of standard sdhci tuning.

The main difference are:
1) not only generate Buffer Read Ready interrupt when tuning is performing.
   It generates all other DATA interrupts like the normal data command.
2) SDHCI_CTRL_EXEC_TUNING is not automatically cleared by HW,
   instead it's controlled by SW.
3) SDHCI_CTRL_TUNED_CLK is not automatically set by HW,
   it's controlled by SW.
4) the clock delay for every tuning is set by SW.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:57:23 -04:00
Dong Aisheng
fed2f6e2d4 mmc: sdhci-esdhc-imx: support real clock on and off for imx6q
The signal voltage switch flow requires to shutdown and output
clock in a specific sequence according to standard host controller
v3.0 spec. In that timing, the card must really receive clock or not.

However, for i.MX6Q, the uSDHC will not output clock even the clock
is enabled until there is command or data in transfer on the bus,
which will then cause singal voltage switch always to fail.

For i.MX6Q, we clear ESDHC_VENDOR_SPEC_FRC_SDCLK_ON bit to let
controller to gate off clock automatically and set that bit
to force clock output if clock is on.

This is required by SD3.0 support.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:57:21 -04:00
Dong Aisheng
d31fc00a71 mmc: sdhci-esdhc: move common esdhc_set_clock to platform driver
We need a lot of imx6 specific things into common esdhc_set_clock
for support SD3.0 and eMMC DDR mode which is not needed for power pc
platforms, so esdhc_set_clock seems not so common anymore.

Instead of keeping add platform specfics things into this common API,
we choose to move that code into platform driver itself to handle.
This can also exclude the dependency between imx and power pc on this
headfile and is easy for maintain in the future.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:57:12 -04:00
Dong Aisheng
c0e55129b0 mmc: sdhci: allow platform access of sdhci_send_command
It helps for platform code to use it send tuning commands.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:53:39 -04:00
Dong Aisheng
4525181245 mmc: sdhci: add hooks for platform specific tuning
The tuning of some platforms may not follow the standard host control
spec v3.0, e.g. Freescale uSDHC on i.MX6Q/DL.
Add a hook here to allow execute platform specific tuning instead of
standard host controller tuning.

The hook only replaces the tuning process, so it's placed after tuning
checking and before the real tuning process.

Some notes for the tuning hook:
1) it needs handle lock itself if it wants to access host controller
according platform specific implementation.
2) do not need to handle runtime pm since it executes with runtime pm
get already.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-26 07:53:21 -04:00
Axel Lin
d0e0493827 mmc: sdhci-bcm2835: Use sdhci_pltfm_unregister instead of open coded
This avoid duplicated implementation.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25 22:05:57 -04:00
Axel Lin
ff1acfd0de mmc: sdhci-bcm-kona: Use sdhci_pltfm_unregister instead of open coded
This avoid duplicated implementation and also fixes missing iounmap() and
release_mem_region() calls in sdhci_bcm_kona_remove().  sdhci_pltfm_init()
calls request_mem_region() and ioremap(), thus we need to call the
corresponding iounmap() and release_mem_region() calls in
sdhci_bcm_kona_remove().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25 22:05:26 -04:00
Sachin Kamat
08de89b791 mmc: dw_mmc-socfpga: Staticize dw_mci_socfpga_probe
'dw_mci_socfpga_probe' is used only in this file. Make it static.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25 21:57:35 -04:00
Sachin Kamat
21f67c2fd8 mmc: dw_mmc-socfpga: Remove redundant of_match_ptr
'dw_mci_socfpga_match' is always compiled in.
Hence of_match_ptr is not necessary.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25 21:57:26 -04:00
Sachin Kamat
e02d293004 mmc: mvsdio: Convert to devm_ioremap_resource
devm_request_and_ioremap() is deprecated. Use devm_ioremap_resource()
instead.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25 21:57:16 -04:00
Jackey Shen
71ef1ea418 mmc: core: clean up duplicate macros
Clean up the duplicate macros:
mmc_sd_card_uhs -> mmc_card_uhs
mmc_sd_card_set_uhs -> mmc_card_set_uhs

Signed-off-by: Jackey Shen <jackey.shen@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-09-25 21:51:52 -04:00