Commit Graph

31 Commits

Author SHA1 Message Date
Chris Ball
5152970538 mfd: rtsx_pcr: Fix MSI enable error handling
pci_enable_msi() can return failure with both positive and negative
integers -- it returns 0 for success -- but is only tested here for
"if (ret < 0)".  This causes us to try to use MSI on the RTS5249 SD
reader in the Dell XPS 11 when enabling MSI failed, causing:

[    1.737110] rtsx_pci: probe of 0000:05:00.0 failed with error -110

Cc: stable <stable@vger.kernel.org>
Reported-by: D. Jared Dominguez <Jared_Dominguez@Dell.com>
Tested-by: D. Jared Dominguez <Jared_Dominguez@Dell.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:23:52 +01:00
Micky Ching
8cd118308a mfd: rtsx: Add dma transfer function
rtsx driver using a single function for transfer data, dma map/unmap are
placed in one fix function. We need map/unmap dma in different place(for
mmc async driver), so add three function for dma map, dma transfer and
dma unmap.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-09 14:14:58 +01:00
Micky Ching
98fcc5762d mmc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req"
This reverts commit c42deffd5b.

commit <mmc: rtsx: add support for pre_req and post_req> did use
mutex_unlock() in tasklet, but mutex_unlock() can't be used in
tasklet(atomic context). The driver needs to use mutex to avoid
concurrency, so we can't use tasklet here, the patch need to be
removed.

The spinlock host->lock and pcr->lock may deadlock, one way to solve
the deadlock is remove host->lock in sd_isr_done_transfer(), but if
using workqueue the we can avoid using the spinlock and also avoid
the problem.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-05-08 08:44:50 +01:00
Micky Ching
c42deffd5b mmc: rtsx: add support for pre_req and post_req
Add support for non-blocking request, pre_req() runs dma_map_sg() and
post_req() runs dma_unmap_sg(). This patch can increase card read/write
speed, especially for high speed card and slow CPU(for some embedded
platform).

Users can get a great benefit from this patch. if CPU frequency is 800MHz,
SDR104 or DDR50 card read/write speed may increase more than 15%.

test results:
intel i3(800MHz - 2.3GHz), SD card clock 208MHz

performance mode(2.3GHz):
Before:
dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.18191 s, 56.8 MB/s
After:
 dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.09276 s, 61.4 MB/s

powersave mode(800MHz):
Before:
dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.29569 s, 51.8 MB/s
After:
dd if=/dev/mmcblk0p1 of=/dev/null bs=64k count=1024
67108864 bytes (67 MB) copied, 1.11218 s, 60.3 MB/s

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Chris Ball <chris@printf.net>
2014-02-22 13:34:20 -05:00
Linus Torvalds
ac26663572 MFD changes due for the v3.14 merge window
New drivers
  - Samsung Maxim 14577; Micro USB, Regulator, IRQ Controller and Battery Charger
  - TI/National Semiconductor LP3943 I2C GPIO Expander and PWM Generator
 
 Existing driver adaptions
  - Expansion of Wolfson Arizona DSP and High-Pass filter controls
  - TI TWL6040 default Regmap support and Regcache addition/bypass
  - Some nice Smatch catch fixes
  - Conversion of TI OMAP-USB and TI TWL6030 to endian neutralness
  - ChromeOS EC timing (delay) adaptions and added dependency on OF
  - Many constifications of 'struct {mfd_cell,regmap_irq,et. al}'
  - Watchdog support added for NVIDIA AS3722
  - Convert functions to static in TI AM335x
  - Realigned previously defeated functionality in TI AM335x
  - IIO ADC-TSC concurrency dead-lock/timeout resolution
  - Addition of Power Management and Clock support for Samsung core
  - DEFINE_PCI_DEVICE_TABLE macro removal from MFD Subsystem
  - Greater use of irqdomain functionality in ST-E AB8500
  - Removal of 'include/linux/mfd/abx500/ab8500-gpio.h'
  - Wolfson WM831x PMIC Power Management changes s/poweroff/shutdown/
  - Device Tree documentation added for TI/Nat Semi LP3943
  - Version detection and voltage tables for TI TPS6586x PMIC devices
  - Simplification of Freescale MC13XXX (de-)initialisation routines
  - Clean-up and simplification of the Realtek parent driver
  - Added support for RTL8402 Realtek PCI-Express card reader
  - Resource leak fix for Maxim 77686
  - Possible suspend BUG() fix in OMAP USB TLL
  - Support for new Wolfson WM5110 Revision (D)
  - Testing of automatic assignment of of_node in mfd_add_device()
    - Reversion of the above when it started to cause issues
  - Remove legacy Platform Data from;
               TI TWL Core, Qualcomm SSBI and ST-E ABx500 Pinctrl
  - Clean-ups; tabbing issues, function name changes, 'drvdata = NULL' removal,
               unused uninitialised warning mitigation, error message clarity,
               removal of redundant/duplicate checks, licensing (GPL -> GPL2),
               coding consistency, duplicate function declaration, ret checks,
               commit corrections, redundant of_match_ptr() helper removal,
               spelling, #if-deffery removal and header guards name changes
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Merge tag 'mfd-3.14-1' of git://git.linaro.org/people/ljones/mfd

Pull MFD changes from Lee Jones:
 "New drivers
   - Samsung Maxim 14577; Micro USB, Regulator, IRQ Controller and
     Battery Charger
   - TI/National Semiconductor LP3943 I2C GPIO Expander and PWM
     Generator

  Existing driver adaptions
   - Expansion of Wolfson Arizona DSP and High-Pass filter controls
   - TI TWL6040 default Regmap support and Regcache addition/bypass
   - Some nice Smatch catch fixes
   - Conversion of TI OMAP-USB and TI TWL6030 to endian neutralness
   - ChromeOS EC timing (delay) adaptions and added dependency on OF
   - Many constifications of 'struct {mfd_cell,regmap_irq,et.al}'
   - Watchdog support added for NVIDIA AS3722
   - Convert functions to static in TI AM335x
   - Realigned previously defeated functionality in TI AM335x
   - IIO ADC-TSC concurrency dead-lock/timeout resolution
   - Addition of Power Management and Clock support for Samsung core
   - DEFINE_PCI_DEVICE_TABLE macro removal from MFD Subsystem
   - Greater use of irqdomain functionality in ST-E AB8500
   - Removal of 'include/linux/mfd/abx500/ab8500-gpio.h'
   - Wolfson WM831x PMIC Power Management changes s/poweroff/shutdown/
   - Device Tree documentation added for TI/Nat Semi LP3943
   - Version detection and voltage tables for TI TPS6586x PMIC devices
   - Simplification of Freescale MC13XXX (de-)initialisation routines
   - Clean-up and simplification of the Realtek parent driver
   - Added support for RTL8402 Realtek PCI-Express card reader
   - Resource leak fix for Maxim 77686
   - Possible suspend BUG() fix in OMAP USB TLL
   - Support for new Wolfson WM5110 Revision (D)
   - Testing of automatic assignment of of_node in mfd_add_device()
   - Reversion of the above when it started to cause issues
   - Remove legacy Platform Data from;
              TI TWL Core, Qualcomm SSBI and ST-E ABx500 Pinctrl
   - Clean-ups; tabbing issues, function name changes, 'drvdata = NULL'
              removal, unused uninitialised warning mitigation, error
              message clarity, removal of redundant/duplicate checks,
              licensing (GPL -> GPL2), coding consistency, duplicate
              function declaration, ret checks, commit corrections,
              redundant of_match_ptr() helper removal, spelling,
              #if-deffery removal and header guards name changes"

* tag 'mfd-3.14-1' of git://git.linaro.org/people/ljones/mfd: (78 commits)
  mfd: wm5110: Add register patch for rev D chip
  mfd: omap-usb-tll: Don't hold lock during pm_runtime_get/put_sync()
  gpio: lp3943: Remove redundant of_match_ptr helper
  mfd: sta2x11-mfd: Use named constants for pci_power_t values
  Documentation: mfd: Fix LDO index in s2mps11.txt
  mfd: Cleanup mfd-mcp-sa11x0.h header
  mfd: max8997: Use "IS_ENABLED(CONFIG_OF)" for DT code.
  mfd: twl6030: Fix endianness problem in IRQ handler
  mfd: sec-core: Add cells for S5M8767-clocks
  mfd: max14577: Remove redundant of_match_ptr helper
  mfd: twl6040: Fix sparse non static symbol warning
  mfd: Revert "mfd: Always assign of_node in mfd_add_device()"
  mfd: rtsx: Fix sparse non static symbol warning
  mfd: max77693: Set proper maximum register for MUIC regmap
  mfd: max77686: Fix regmap resource leak on driver remove
  mfd: Represent correct filenames in file headers
  mfd: rtsx: Add support for card reader rtl8402
  mfd: rtsx: Add set pull control macro and simplify rtl8411
  mfd: max8997: Enforce mfd_add_devices() return value check
  mfd: mc13xxx: Simplify probe() & remove()
  ...
2014-01-21 10:58:17 -08:00
Micky Ching
56cb3cc187 mfd: rtsx: Add support for card reader rtl8402
rtl8402 is much like rtl8411, so just add it to rtl8411.c

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:11 +00:00
Jingoo Han
36fcd06c46 mfd: Remove DEFINE_PCI_DEVICE_TABLE macro
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:45 +00:00
Thomas Gleixner
73beb63d29 mfd: rtsx_pcr: Disable interrupts before cancelling delayed works
This fixes a kernel panic when resuming from suspend to RAM.
Without this fix an interrupt hits after the delayed work is canceled
and thus requeues it. So we end up freeing an armed timer.

Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-12-10 12:05:37 +01:00
Sachin Kamat
af1192d769 mfd: mc12xx-i2c: rtsx_pcr: ti-ssp: Remove redundant dev_set_drvdata
Driver core sets driver data to NULL upon failure or remove.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-10-23 16:21:07 +01:00
Wei WANG
09fd86780b mfd: rtsx: Copyright modifications
Update copyright date, remove author address and add Roger Tseng.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-20 10:22:01 +02:00
Wei WANG
eb891c65c9 mfd: rtsx: Configure to enter a deeper power-saving mode in S3
Set a bit to enable rts5227 and rts5249 to enter a deeper internal
power-saving mode in S3, and recover it after resuming.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-20 10:22:01 +02:00
Wei WANG
7140812c4a mfd: rtsx: Move some actions from rtsx_pci_init_hw to individual extra_init_hw
These actions are individual for each reader model, so should be put in
extra_init_hw instead of rtsx_pci_init_hw.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-20 10:22:00 +02:00
Wei WANG
5947c167d1 mfd: rtsx: Add shutdown callback in rtsx_pci_driver
Some actions to clear power state should be handled in .shutdown
callback in rtsx_pci_driver. This patch adopts the following measures to
catch this goal:
1. Add a function rtsx_pci_power_off to abstract the common ops in
.shutdown and .suspend
2. Add pcr->ops->force_power_down to fulfill the individual action for
each reader model

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-20 10:22:00 +02:00
Wei WANG
773ccdfd9c mfd: rtsx: Read vendor setting from config space
Normally OEMs will set vendor setting to the config space of Realtek
card reader in BIOS stage. This patch reads the setting at the first,
and configure the internal registers according to it, to improve card
reader's compatibility condition.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-08-20 10:22:00 +02:00
Roger Tseng
9032eabdd3 mfd: rtsx: Add support for RTL8411B
Adding support of model RTL8411B. Since the model is similar to RTL8411,
differences are implemented in rtl8411.c.

Signed-off-by: Roger Tseng <rogerable@realtek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-11 19:27:51 +02:00
Wei WANG
4c4b8c105a mfd: rtsx: Support RTS5249
RTS5249 supports SD UHS-II interface.

In order to support SD UHS-II,the definitions of some internal
registers of RTS5249 have to be modified and are different from its
predecessors. So we need this patch to ensure RTS5249 can work, even
SD/MMC stack doesn't support UHS-II interface.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-19 18:29:18 +02:00
Jiri Slaby
9d66b568a2 MFD: rtsx_pcr: Fix probe fail path
When rtsx_pci_acquire_irq fails in rtsx_pci_probe, we forget to
disable an MSI (if we enabled it). This results in this warning on the
next attempt to load the module:
WARNING: at drivers/pci/msi.c:834 pci_enable_msi_block+0x2a4/0x2b0()
Hardware name: HP EliteBook 840 G1
Modules linked in: rtsx_pci(+) ...
Pid: 4056, comm: modprobe Tainted: G          I  3.8.0-9405-gd895cb1-1-vanilla #1
Call Trace:
 [<ffffffff81045c6a>] warn_slowpath_common+0x7a/0xc0
 [<ffffffff81045cc5>] warn_slowpath_null+0x15/0x20
 [<ffffffff81302544>] pci_enable_msi_block+0x2a4/0x2b0
 [<ffffffffa05e335a>] rtsx_pci_probe+0x55a/0x720 [rtsx_pci]
...

So properly disable MSI in that case.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-04-05 18:40:14 +02:00
Tejun Heo
9f12563db1 mfd: convert to idr_alloc()
Convert to the much saner new idr interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:17 -08:00
Wei WANG
c3481955f6 mfd: rtsx: Fix issue that booting OS with SD card inserted
Realtek card reader supports both SD and MS card. According to the
settings of rtsx MFD driver, SD host will be probed before MS host.
If we boot/reboot Linux with SD card inserted, the resetting flow of SD
card will succeed, and the following resetting flow of MS is sure to fail.
Then MS upper-level driver will ask rtsx driver to turn power off. This
request leads to the result that the following SD commands fail and SD card
can't be accessed again.

In this commit, Realtek's SD and MS host driver will check whether the card
that upper driver requesting is the one existing in the slot. If not, Realtek's
host driver will refuse the operation to make sure the exlusive accessing
at the same time.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:24:12 +01:00
Roger Tseng
e12379320b mfd: rtsx: Support RTS5227
Support new model RTS5227.

Signed-off-by: Roger Tseng <rogerable@realtek.com>
Reviewed-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:22:59 +01:00
Wei WANG
504decc0a0 mfd: rtsx: Optimize card detect flow
1. Schedule card detect work at the end of the ISR
2. Callback function ops->cd_deglitch may delay for a period of time.
It is not proper to call this callback when local irq disabled.
3. Card detect flow can't be executed in parallel with other card reader
operations, so it's better to be protected by mutex.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:22:58 +01:00
Wei WANG
eebbe25416 mfd: rtsx: Use macros to replace some variables
In function rtsx_pci_switch_clock, some variables, such as min_n, max_n,
and max_div, are not necessary. And those assigned values look very
obscure for others. It's more proper to use macro definitions here to
replace these variables.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Acked-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:22:57 +01:00
Wei WANG
678cacdfda mfd: rtsx: Fix checkpatch warning
WARNING: Avoid CamelCase: <min_N>
+	u8 N, min_N, max_N, clk_divider;

WARNING: Avoid CamelCase: <max_N>
+	u8 N, min_N, max_N, clk_divider;

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:22:57 +01:00
Wei WANG
f84ef04227 mfd: rtsx: Declare that the DMA address limitation is 32bit explicitly
Realtek PCIe card reader only supports 32bit DMA.
This declaration can improve the readability.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:22:57 +01:00
Wei WANG
9871c799d1 mfd: rtsx: Remove redundant code
In function rtsx_pci_add_sg_tbl, the statement "ptr++" is useless.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Acked-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:22:56 +01:00
Wei WANG
2d1484f599 mfd: rtsx: Fix oops when rtsx_pci_sdmmc is not probed
If rtsx_pci_sdmmc is not probed, function pointer pcr->slots[].card_event
will point to NULL, and thus rtsx_pci_card_detect will reference a NULL
pointer.
Check card_event pointer before referencing it can avoid kernel panic.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-27 02:18:07 +01:00
Wei WANG
ab4e8f8b7b mfd: rtsx: Add clock divider hook
Add callback function conv_clk_and_div_n to convert between SSC clock
and its divider N.
For rtl8411, the formula to calculate SSC clock divider N is different
with the other card reader models.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-27 01:30:20 +01:00
Wei WANG
d817ac4e18 mfd: rtsx: Add output voltage switch hook
Different card reader has different method to switch output voltage,
add this callback to let the card reader implement its individual switch
function.
This is needed as rtl8411 has a specific switch output voltage procedure.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-27 01:29:39 +01:00
Greg Kroah-Hartman
612b95cd79 Drivers: mfd: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:14 -08:00
Samuel Ortiz
aec17ea1ee mfd: Explicitely include slab.h to rtsx
This fixes the following build error on some architectures (parisc at least):

drivers/mfd/rtsx_pcr.c: In function 'rtsx_pci_init_chip':
drivers/mfd/rtsx_pcr.c:985:2: error: implicit declaration of function 'kcalloc'
[-Werror=implicit-function-declaration]
drivers/mfd/rtsx_pcr.c:985:13: warning: assignment makes pointer from integer
without a cast [enabled by default]

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-09 10:27:45 +01:00
Wei WANG
ada8a8a13b mfd: Add realtek pcie card reader driver
Realtek PCI-E card reader driver adapts requests from upper-level
sdmmc/memstick layer to the real physical card reader.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-08 10:35:17 +01:00