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f30cdaf P33M 21 October 2015, 13:55:21 UTC rpi_display: add backlight driver and overlay Add a mailbox-driven backlight controller for the Raspberry Pi DSI touchscreen display. Requires updated GPU firmware to recognise the mailbox request. Signed-off-by: Gordon Hollingworth <gordon@raspberrypi.org> 14 November 2015, 13:19:57 UTC
98df01a popcornmix 28 September 2015, 22:38:59 UTC irq-bcm2835: Fix building with 2708 14 November 2015, 13:19:57 UTC
6e65d35 Jan Grulich 24 August 2015, 15:02:34 UTC tpa6130a2: Add headphone switch control Signed-off-by: Jan Grulich <jan@grulich.eu> 14 November 2015, 13:19:56 UTC
67b13cc Jan Grulich 24 August 2015, 15:03:47 UTC RaspiDAC3 support Signed-off-by: Jan Grulich <jan@grulich.eu> config: fix RaspiDAC Rev.3x dependencies Change depends to SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S like the other I2S soundcard drivers. Signed-off-by: Matthias Reichl <hias@horus.com> 14 November 2015, 13:19:56 UTC
5345d5e Phil Elwell 14 July 2015, 13:32:47 UTC Merge pull request #1043 from XECDesign/sense-4.0 mfd: Add Raspberry Pi Sense HAT core driver 14 November 2015, 13:19:55 UTC
a47aedd Phil Elwell 14 July 2015, 16:00:18 UTC scripts/dtc: Add overlay support 14 November 2015, 13:19:55 UTC
ebda546 Phil Elwell 14 July 2015, 09:26:09 UTC spidev: Add "spidev" compatible string to silence warning See: https://github.com/raspberrypi/linux/issues/1054 14 November 2015, 13:19:54 UTC
b85b3d2 Phil Elwell 25 June 2015, 11:16:11 UTC gpio-poweroff: Allow it to work on Raspberry Pi The Raspberry Pi firmware manages the power-down and reboot process. To do this it installs a pm_power_off handler, causing the gpio-poweroff module to abort the probe function. This patch introduces a "force" DT property that overrides that behaviour, and also adds a DT overlay to enable and control it. Note that running in an active-low configuration (DT parameter "active_low") requires a custom dt-blob.bin and probably won't allow a reboot without switching off, so an external inversion of the trigger signal may be preferable. 14 November 2015, 13:19:54 UTC
7d13b5b popcornmix 16 June 2015, 16:47:27 UTC platform: Add force_core command line setting to boot from a different core number 14 November 2015, 13:19:54 UTC
e1eebf8 Phil Elwell 13 October 2014, 10:47:53 UTC Improve __copy_to_user and __copy_from_user performance Provide a __copy_from_user that uses memcpy. On BCM2708, use optimised memcpy/memmove/memcmp/memset implementations. arch/arm: Add mmiocpy/set aliases for memcpy/set See: https://github.com/raspberrypi/linux/issues/1082 14 November 2015, 13:19:53 UTC
efbb183 Gordon Hollingworth 12 May 2015, 13:47:56 UTC rpi-ft5406: Add touchscreen driver for pi LCD display Fix driver detection failure Check that the buffer response is non-zero meaning the touchscreen was detected rpi-ft5406: Use firmware API 14 November 2015, 13:19:53 UTC
84ca8b8 Noralf Trønnes 29 April 2015, 15:24:02 UTC bcm2835: bcm2835_defconfig Some options in bcm2835_defconfig are now the default and some have changed. Update to keep functionality. No longer available: SCSI_MULTI_LUN and RESOURCE_COUNTERS. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2835: bcm2835_defconfig enable MMC_BCM2835 Enable the downstream bcm2835-mmc driver and DMA support. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2835: bcm2835_defconfig enable BCM2708_MBOX Enable the mailbox driver. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2835: bcm2835_defconfig use FB_BCM2708 Enable the bcm2708 framebuffer driver. Disable the simple framebuffer driver, which matches the device handed over by u-boot. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2835: Merge bcm2835_defconfig with bcmrpi_defconfig These commands where used to make this commit: ./scripts/diffconfig -m arch/arm/configs/bcm2835_defconfig arch/arm/configs/bcmrpi_defconfig > merge.cfg cat << EOF > filter CONFIG_ARCH_BCM2708 CONFIG_BCM2708_DT CONFIG_ARM_PATCH_PHYS_VIRT CONFIG_PHYS_OFFSET CONFIG_CMDLINE CONFIG_BCM2708_WDT CONFIG_HW_RANDOM_BCM2708 CONFIG_I2C_BCM2708 CONFIG_SPI_BCM2708 CONFIG_SND_BCM2708_SOC_I2S CONFIG_USB_DWCOTG CONFIG_LIRC_RPI EOF grep -F -v -f filter merge.cfg > filtered.cfg cat << EOF > added.cfg CONFIG_WATCHDOG=y CONFIG_BCM2835_WDT=y CONFIG_MISC_FILESYSTEMS=y CONFIG_SND_BCM2835_SOC_I2S=m EOF ARCH=arm scripts/kconfig/merge_config.sh arch/arm/configs/bcm2835_defconfig filtered.cfg added.cfg ARCH=arm make oldconfig ARCH=arm make savedefconfig cp defconfig arch/arm/configs/bcm2835_defconfig rm merge.cfg filter filtered.cfg added.cfg defconfig ARCH=arm make bcm2835_defconfig ARCH=arm make oldconfig Signed-off-by: Noralf Trønnes <noralf@tronnes.org> configs: Incorporate v4.1 dependency changes Commit 78e9b7de78bb53e8bc7f4c4a60ebacb250c0c190 added a dependency on TI_ST instead of selecting it, disabling: CONFIG_BT_WILINK=m CONFIG_RADIO_WL128X=m Commit 652ccae5cc4e1305fb0a4619947f9ee89d8c7f5a added a depency on ARM_CRYPTO, disabling: CONFIG_CRYPTO_SHA*_ARM*=m CONFIG_CRYPTO_AES_ARM*=m Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Conflicts: arch/arm/configs/bcm2709_defconfig bcm2835: Sync bcm2835_defconfig with bcmrpi_defconfig These commands where used to make this commit: : Get changed and new config values from a merge ./scripts/diffconfig -m arch/arm/configs/bcm2835_defconfig arch/arm/configs/bcmrpi_defconfig > merge.cfg : Remove these options cat << EOF > filter CONFIG_ARCH_BCM2708 CONFIG_BCM2708_DT CONFIG_ARM_PATCH_PHYS_VIRT CONFIG_PHYS_OFFSET CONFIG_CMDLINE CONFIG_BCM2708_WDT CONFIG_HW_RANDOM_BCM2708 CONFIG_SPI_BCM2708 EOF : Apply filter grep -F -v -f filter merge.cfg > filtered.cfg : Add these options : watchdog contains the restart/poweroff code. cat << EOF > added.cfg CONFIG_WATCHDOG=y CONFIG_BCM2835_WDT=y CONFIG_MISC_FILESYSTEMS=y CONFIG_I2C_BCM2835=m CONFIG_SND_BCM2835_SOC_I2S=m EOF : Create new config ARCH=arm scripts/kconfig/merge_config.sh arch/arm/configs/bcm2835_defconfig filtered.cfg added.cfg : Verify ARCH=arm make oldconfig : Update bcm2835_defconfig ARCH=arm make savedefconfig cp defconfig arch/arm/configs/bcm2835_defconfig : Clean up rm merge.cfg filter filtered.cfg added.cfg defconfig Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 14 November 2015, 13:19:52 UTC
c7d5087 popcornmix 13 April 2015, 16:16:29 UTC config: Add default configs 14 November 2015, 13:19:52 UTC
3d8bbe0 Clive Messer 02 April 2015, 11:22:55 UTC Add Device Tree support for RPi-DAC. 13 November 2015, 17:17:25 UTC
3167d6d Waldemar Brodkorb 25 March 2015, 08:26:17 UTC Add driver for rpi-proto Forward port of 3.10.x driver from https://github.com/koalo We are using a custom board and would like to use rpi 3.18.x kernel. Patch works fine for our embedded system. URL to the audio chip: http://www.mikroe.com/add-on-boards/audio-voice/audio-codec-proto/ Playback tested with devicetree enabled. Signed-off-by: Waldemar Brodkorb <wbrodkorb@conet.de> 13 November 2015, 17:17:24 UTC
cef58a9 Phil Elwell 27 February 2015, 15:10:24 UTC enc28j60: Add device tree compatible string and an overlay 13 November 2015, 17:17:23 UTC
ff5fd21 Phil Elwell 06 February 2015, 13:50:57 UTC BCM270x_DT: Add pwr_led, and the required "input" trigger The "input" trigger makes the associated GPIO an input. This is to support the Raspberry Pi PWR LED, which is driven by external hardware in normal use. N.B. pwr_led is not available on Model A or B boards. leds-gpio: Implement the brightness_get method The power LED uses some clever logic that means it is driven by a voltage measuring circuit when configured as input, otherwise it is driven by the GPIO output value. This patch wires up the brightness_get method for leds-gpio so that user-space can monitor the LED value via /sys/class/gpio/led1/brightness. Using the input trigger this returns an indication of the system power health, otherwise it is just whatever value the trigger has written most recently. See: https://github.com/raspberrypi/linux/issues/1064 13 November 2015, 17:17:22 UTC
bde6dfb Ryan Coe 01 February 2015, 01:25:49 UTC Update ds1307 driver for device-tree support Signed-off-by: Ryan Coe <bluemrp9@gmail.com> 13 November 2015, 17:17:22 UTC
435ea31 popcornmix 13 April 2015, 17:45:39 UTC Adding Device Tree support for some RPi audio cards 13 November 2015, 17:17:21 UTC
3bf91f6 Phil Elwell 13 April 2015, 18:14:18 UTC bcm2708: Allow option card devices to be configured via DT If the kernel is built with Device Tree support, and if a DT blob is provided for the kernel at boot time, then the platform devices for option cards are not created. This avoids both the need to blacklist unwanted devices, and the need to update the board support code with each new device. 13 November 2015, 17:17:20 UTC
e74ef15 Daniel Matuschek 04 August 2014, 09:09:58 UTC Added driver for HiFiBerry Amp amplifier add-on board The driver contains a low-level hardware driver for the TAS5713 and the drivers for the Raspberry Pi I2S subsystem. TAS5713: return error if initialisation fails Existing TAS5713 driver logs errors during initialisation, but does not return an error code. Therefore even if initialisation fails, the driver will still be loaded, but won't work. This patch fixes this. I2C communication error will now reported correctly by a non-zero return code. HiFiBerry Amp: fix device-tree problems Some code to load the driver based on device-tree-overlays was missing. This is added by this patch. 13 November 2015, 17:17:19 UTC
1d66018 Daniel Matuschek 04 August 2014, 08:06:56 UTC Added support for HiFiBerry DAC+ The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses a different codec chip (PCM5122), therefore a new driver is necessary. 13 November 2015, 17:17:19 UTC
999b664 popcornmix 14 July 2014, 21:02:09 UTC hid: Reduce default mouse polling interval to 60Hz Reduces overhead when using X 13 November 2015, 17:17:18 UTC
af4228e Gordon Garrity 08 March 2014, 16:56:57 UTC Add IQaudIO Sound Card support for Raspberry Pi Set a limit of 0dB on Digital Volume Control The main volume control in the PCM512x DAC has a range up to +24dB. This is dangerously loud and can potentially cause massive clipping in the output stages. Therefore this sets a sensible limit of 0dB for this control. 13 November 2015, 17:17:17 UTC
abf850e Daniel Matuschek 16 January 2014, 06:36:35 UTC ASoC: wm8804: Set idle_bias_off to false Idle bias has been change to remove warning on driver startup Signed-off-by: Daniel Matuschek <daniel@matuschek.net> 13 November 2015, 17:17:16 UTC
5e9da2c Daniel Matuschek 15 January 2014, 20:42:08 UTC ASoC: BCM:Add support for HiFiBerry Digi. Driver is based on the patched WM8804 driver. Signed-off-by: Daniel Matuschek <daniel@matuschek.net> Add a parameter to turn off SPDIF output if no audio is playing This patch adds the paramater auto_shutdown_output to the kernel module. Default behaviour of the module is the same, but when auto_shutdown_output is set to 1, the SPDIF oputput will shutdown if no stream is playing. bugfix for 32kHz sample rate, was missing HiFiBerry Digi: set SPDIF status bits for sample rate The HiFiBerry Digi driver did not signal the sample rate in the SPDIF status bits. While this is optional, some DACs and receivers do not accept this signal. This patch adds the sample rate bits in the SPDIF status block. 13 November 2015, 17:17:16 UTC
3a63a61 Daniel Matuschek 15 January 2014, 20:41:23 UTC ASoC: wm8804: Implement MCLK configuration options, add 32bit support WM8804 can run with PLL frequencies of 256xfs and 128xfs for most sample rates. At 192kHz only 128xfs is supported. The existing driver selects 128xfs automatically for some lower samples rates. By using an additional mclk_div divider, it is now possible to control the behaviour. This allows using 256xfs PLL frequency on all sample rates up to 96kHz. It should allow lower jitter and better signal quality. The behavior has to be controlled by the sound card driver, because some sample frequency share the same setting. e.g. 192kHz and 96kHz use 24.576MHz master clock. The only difference is the MCLK divider. This also added support for 32bit data. Signed-off-by: Daniel Matuschek <daniel@matuschek.net> 13 November 2015, 17:17:15 UTC
a52470e Florian Meier 22 November 2013, 18:21:34 UTC BCM2708: Add HifiBerry DAC to board file This adds the initalization of the HifiBerry DAC to the mach-bcm2708 board file. Signed-off-by: Florian Meier <florian.meier@koalo.de> 13 November 2015, 17:17:14 UTC
43e3d29 Florian Meier 22 November 2013, 18:19:08 UTC ASoC: Add support for HifiBerry DAC This adds a machine driver for the HifiBerry DAC. It is a sound card that can be stacked onto the Raspberry Pi. Signed-off-by: Florian Meier <florian.meier@koalo.de> 13 November 2015, 17:17:13 UTC
794fb7d Florian Meier 22 November 2013, 13:59:51 UTC ASoC: Add support for PCM5102A codec Some definitions to support the PCM5102A codec by Texas Instruments. Signed-off-by: Florian Meier <florian.meier@koalo.de> 13 November 2015, 17:17:13 UTC
5b80508 popcornmix 18 December 2013, 22:16:19 UTC config: Enable CONFIG_MEMCG, but leave it disabled (due to memory cost). Enable with cgroup_enable=memory. 13 November 2015, 17:17:12 UTC
a711bfa popcornmix 02 July 2013, 23:54:08 UTC Added Device IDs for August DVB-T 205 13 November 2015, 17:17:11 UTC
0357e58 popcornmix 08 May 2013, 10:46:50 UTC enabling the realtime clock 1-wire chip DS1307 and 1-wire on GPIO4 (as a module) 1-wire: Add support for configuring pin for w1-gpio kernel module See: https://github.com/raspberrypi/linux/pull/457 Add bitbanging pullups, use them for w1-gpio Allows parasite power to work, uses module option pullup=1 bcm2708: Ensure 1-wire pullup is disabled by default, and expose as module parameter Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk> w1-gpio: Add gpiopin module parameter and correctly free up gpio pull-up pin, if set Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk> w1-gpio: Sort out the pullup/parasitic power tangle 13 November 2015, 17:17:10 UTC
608dd57 popcornmix 26 March 2013, 17:26:38 UTC Allow mac address to be set in smsc95xx Signed-off-by: popcornmix <popcornmix@gmail.com> 13 November 2015, 17:17:10 UTC
e1c2628 Harm Hanemaaijer 20 June 2013, 18:21:39 UTC Speed up console framebuffer imageblit function Especially on platforms with a slower CPU but a relatively high framebuffer fill bandwidth, like current ARM devices, the existing console monochrome imageblit function used to draw console text is suboptimal for common pixel depths such as 16bpp and 32bpp. The existing code is quite general and can deal with several pixel depths. By creating special case functions for 16bpp and 32bpp, by far the most common pixel formats used on modern systems, a significant speed-up is attained which can be readily felt on ARM-based devices like the Raspberry Pi and the Allwinner platform, but should help any platform using the fb layer. The special case functions allow constant folding, eliminating a number of instructions including divide operations, and allow the use of an unrolled loop, eliminating instructions with a variable shift size, reducing source memory access instructions, and eliminating excessive branching. These unrolled loops also allow much better code optimization by the C compiler. The code that selects which optimized variant is used is also simplified, eliminating integer divide instructions. The speed-up, measured by timing 'cat file.txt' in the console, varies between 40% and 70%, when testing on the Raspberry Pi and Allwinner ARM-based platforms, depending on font size and the pixel depth, with the greater benefit for 32bpp. Signed-off-by: Harm Hanemaaijer <fgenfb@yahoo.com> 13 November 2015, 17:17:09 UTC
c3bbc3e popcornmix 10 February 2015, 11:19:21 UTC rtl8192cu: Add PID for D-Link DWA 131 13 November 2015, 17:17:08 UTC
282ab58 Marc Kleine-Budde 12 September 2015, 15:29:59 UTC rtl8192c_rf6052: PHY_RFShadowRefresh(): fix off-by-one Signed-off-by: Marc Kleine-Budde <mkl@blackshift.org> 13 November 2015, 17:17:07 UTC
aa37296 popcornmix 03 September 2012, 16:10:23 UTC Add non-mainline source for rtl8192cu wireless driver version v4.0.2_9000 as this is widely used. Disabled older rtlwifi driver 8192cu needs old wireless extensions The obsolete WIRELESS_EXT configuration is used by the old Realtek code and is needed for AP support. 8192cu: CONFIG_AP_MODE hardcoded in autoconf.h 13 November 2015, 17:17:06 UTC
aaf755a Siarhei Siamashka 17 June 2013, 10:32:11 UTC fbdev: add FBIOCOPYAREA ioctl Based on the patch authored by Ali Gholami Rudi at https://lkml.org/lkml/2009/7/13/153 Provide an ioctl for userspace applications, but only if this operation is hardware accelerated (otherwide it does not make any sense). Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> 13 November 2015, 17:17:05 UTC
671a207 Noralf Trønnes 15 August 2015, 18:47:07 UTC bcm2835: Match with BCM2708 Device Trees Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:17:05 UTC
ae29926 notro 09 July 2014, 12:46:08 UTC BCM2708: Add core Device Tree support Add the bare minimum needed to boot BCM2708 from a Device Tree. Signed-off-by: Noralf Tronnes <notro@tronnes.org> BCM2708: DT: change 'axi' nodename to 'soc' Change DT node named 'axi' to 'soc' so it matches ARCH_BCM2835. The VC4 bootloader fills in certain properties in the 'axi' subtree, but since this is part of an upstreaming effort, the name is changed. Signed-off-by: Noralf Tronnes notro@tronnes.org BCM2708_DT: Correct length of the peripheral space Use dts-dirs feature for overlays. The kernel makefiles have a dts-dirs target that is for vendor subdirectories. Using this fixes the install_dtbs target, which previously did not install the overlays. BCM270X_DT: configure I2S DMA channels Signed-off-by: Matthias Reichl <hias@horus.com> BCM270X_DT: switch to bcm2835-i2s I2S soundcard drivers with proper devicetree support (i.e. not linking to the cpu_dai/platform via name but to cpu/platform via of_node) will work out of the box without any modifications. When the kernel is compiled without devicetree support the platform code will instantiate the bcm2708-i2s driver and I2S soundcard drivers will link to it via name, as before. Signed-off-by: Matthias Reichl <hias@horus.com> 13 November 2015, 17:17:04 UTC
bcbd371 Phil Elwell 05 December 2014, 17:26:26 UTC fdt: Add support for the CONFIG_CMDLINE_EXTEND option 13 November 2015, 17:17:03 UTC
fcb2345 Phil Elwell 11 May 2015, 08:00:42 UTC scripts: Add mkknlimg and knlinfo scripts from tools repo The Raspberry Pi firmware looks for a trailer on the kernel image to determine whether it was compiled with Device Tree support enabled. If the firmware finds a kernel without this trailer, or which has a trailer indicating that it isn't DT-capable, it disables DT support and reverts to using ATAGs. The mkknlimg utility adds that trailer, having first analysed the image to look for signs of DT support and the kernel version string. knlinfo displays the contents of the trailer in the given kernel image. scripts/mkknlimg: Add support for ARCH_BCM2835 Add a new trailer field indicating whether this is an ARCH_BCM2835 build, as opposed to MACH_BCM2708/9. If the loader finds this flag is set it changes the default base dtb file name from bcm270x... to bcm283y... Also update knlinfo to show the status of the field. scripts/mkknlimg: Improve ARCH_BCM2835 detection The board support code contains sufficient strings to be able to distinguish 2708 vs. 2835 builds, so remove the check for bcm2835-pm-wdt which could exist in either. Also, since the canned configuration is no longer built in (it's a module), remove the config string checking. See: https://github.com/raspberrypi/linux/issues/1157 13 November 2015, 17:17:02 UTC
988e3f4 Vincent Sanders 30 January 2013, 12:45:18 UTC bcm2835: add v4l2 camera device - Supports raw YUV capture, preview, JPEG and H264. - Uses videobuf2 for data transfer, using dma_buf. - Uses 3.6.10 timestamping - Camera power based on use - Uses immutable input mode on video encoder Signed-off-by: Daniel Stone <daniels@collabora.com> Signed-off-by: Luke Diamand <luked@broadcom.com> V4L2: Fixes from 6by9 V4L2: Fix EV values. Add manual shutter speed control V4L2 EV values should be in units of 1/1000. Corrected. Add support for V4L2_CID_EXPOSURE_ABSOLUTE which should give manual shutter control. Requires manual exposure mode to be selected first. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Correct JPEG Q-factor range Should be 1-100, not 0-100 Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Fix issue of driver jamming if STREAMON failed. Fix issue where the driver was left in a partially enabled state if STREAMON failed, and would then reject many IOCTLs as it thought it was streaming. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Fix ISO controls. Driver was passing the index to the GPU, and not the desired ISO value. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add flicker avoidance controls Add support for V4L2_CID_POWER_LINE_FREQUENCY to set flicker avoidance frequencies. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add support for frame rate control. Add support for frame rate (or time per frame as V4L2 inverts it) control via s_parm. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Improve G_FBUF handling so we pass conformance Return some sane numbers for get framebuffer so that we pass conformance. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Fix information advertised through g_vidfmt Width and height were being stored based on incorrect values. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add support for inline H264 headers Add support for V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER to control H264 inline headers. Requires firmware fix to work correctly, otherwise format has to be set to H264 before this parameter is set. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Fix JPEG timestamp issue JPEG images were coming through from the GPU with timestamp of 0. Detect this and give current system time instead of some invalid value. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Fix issue when switching down JPEG resolution. JPEG buffer size calculation is based on input resolution. Input resolution was being configured after output port format. Caused failures if switching from one JPEG resolution to a smaller one. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Enable MJPEG encoding Requires GPU firmware update to support MJPEG encoder. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Correct flag settings for compressed formats Set flags field correctly on enum_fmt_vid_cap for compressed image formats. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: H264 profile & level ctrls, FPS control and auto exp pri Several control handling updates. H264 profile and level controls. Timeperframe/FPS reworked to add V4L2_CID_EXPOSURE_AUTO_PRIORITY to select whether AE is allowed to override the framerate specified. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Correct BGR24 to RGB24 in format table Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add additional pixel formats. Correct colourspace Adds the other flavours of YUYV, and NV12. Corrects the overlay advertised colourspace. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Drop logging msg from info to debug Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Initial pass at scene modes. Only supports exposure mode and metering modes. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add manual white balance control. Adds support for V4L2_CID_RED_BALANCE and V4L2_CID_BLUE_BALANCE. Only has an effect if V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE has V4L2_WHITE_BALANCE_MANUAL selected. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> config: Enable V4L / MMAL driver V4L2: Increase the MMAL timeout to 3sec MJPEG codec flush is now taking longer and results in a kernel panic if the driver has stopped waiting for the result when it finally completes. Increase the timeout value from 1 to 3secs. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add support for setting H264_I_PERIOD Adds support for the parameter V4L2_CID_MPEG_VIDEO_H264_I_PERIOD to set the frequency with which I frames are produced. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Enable GPU function for removing padding from images. GPU can now support arbitrary strides, although may require additional processing to achieve it. Enable this feature so that the images delivered are the size requested. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add support for V4L2_PIX_FMT_BGR32 Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Set the colourspace to avoid odd YUV-RGB conversions Removes the amiguity from the conversion routines and stops them dropping back to the SD vs HD choice of coeffs. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Make video/still threshold a run-time param Move the define for at what resolution the driver switches from a video mode capture to a stills mode capture to module parameters. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Fix incorrect pool sizing Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add option to disable enum_framesizes. Gstreamer's handling of a driver that advertises V4L2_FRMSIZE_TYPE_STEPWISE to define the supported resolutions is broken. See bug https://bugzilla.gnome.org/show_bug.cgi?id=726521 Optional parameter of gst_v4l2src_is_broken added. If non-zero, the driver claims not to support that ioctl, and gstreamer should be happy again (it guesses a set of defaults for itself). Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Add support for more image formats Adds YVU420 (YV12), YVU420SP (NV21), and BGR888. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> V4L2: Extend range for V4L2_CID_MPEG_VIDEO_H264_I_PERIOD Request to extend the range from the fairly arbitrary 1000 frames (33 seconds at 30fps). Extend out to the max range supported (int32 value). Also allow 0, which is handled by the codec as only send an I-frame on the first frame and never again. There may be an exception if it detects a significant scene change, but there's no easy way around that. Signed-off-by: Dave Stevenson <dsteve@broadcom.com> bcm2835-camera: stop_streaming now has a void return BCM2835-V4L2: Fix compliance test failures VIDIOC_TRY_FMT and VIDIOC_S_FMT tests were faling due to reporting V4L2_COLORSPACE_JPEG when the colour format wasn't V4L2_PIX_FMT_JPEG. Now reports V4L2_COLORSPACE_SMPTE170M for YUV formats. bcm2835 camera planar/packed stride length Added a field to the mmal_fmt struct used to compute the bytes per line when using a particular format. This results in the correct stride being calculated even when the format is planar. Signed-off-by: Garrett Wilson <g@floft.net> bcm2835: camera: check for scene not being found static analysis by cppcheck detected some potential NULL pointer dereference issues: [drivers/media/platform/bcm2835/controls.c:854]: (error) Possible null pointer dereference: scene (and lines 858, 859 too) it is possible that scene is not found because of an invalue ctrl->val and is therefore NULL and hence causing a null pointer dereference. Signed-off-by: Colin Ian King <colin.king@canonical.com> bcm2835: memcpy port data to m rather than rmsg static analysis by cppcheck detected a memcpy to rmsg which is not actually initialized at that point. The memcpy should be copying to variable m instead. Signed-off-by: Colin Ian King <colin.king@canonical.com> BCM2835-V4L2: Return buffers to videobuf2 on shutdown https://github.com/raspberrypi/linux/issues/817 Fixes the kernel warning from videobuf2 as buffers are now returned as they are being flushed on stop_streaming. 13 November 2015, 17:17:01 UTC
234fdb3 Noralf Trønnes 26 June 2015, 12:25:01 UTC firmware: bcm2835: Support ARCH_BCM270x Support booting without Device Tree. Turn on USB power. Load driver early because of lacking support for deferred probing in many drivers. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:17:00 UTC
ccd2fc7 Noralf Trønnes 26 June 2015, 12:27:06 UTC char: broadcom: Add vcio module Add module for accessing the mailbox property channel through /dev/vcio. Was previously in bcm2708-vcio. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:17:00 UTC
8066c0a popcornmix 17 June 2015, 14:44:08 UTC Add Chris Boot's i2c driver i2c-bcm2708: fixed baudrate Fixed issue where the wrong CDIV value was set for baudrates below 3815 Hz (for 250MHz bus clock). In that case the computed CDIV value was more than 0xffff. However the CDIV register width is only 16 bits. This resulted in incorrect setting of CDIV and higher baudrate than intended. Example: 3500Hz -> CDIV=0x11704 -> CDIV(16bit)=0x1704 -> 42430Hz After correction: 3500Hz -> CDIV=0x11704 -> CDIV(16bit)=0xffff -> 3815Hz The correct baudrate is shown in the log after the cdiv > 0xffff correction. Perform I2C combined transactions when possible Perform I2C combined transactions whenever possible, within the restrictions of the Broadcomm Serial Controller. Disable DONE interrupt during TA poll Prevent interrupt from being triggered if poll is missed and transfer starts and finishes. i2c: Make combined transactions optional and disabled by default i2c: bcm2708: add device tree support Add DT support to driver and add to .dtsi file. Setup pins in .dts file. i2c is disabled by default. Signed-off-by: Noralf Tronnes <notro@tronnes.org> bcm2708: don't register i2c controllers when using DT The devices for the i2c controllers are in the Device Tree. Only register devices when not using DT. Signed-off-by: Noralf Tronnes <notro@tronnes.org> I2C: Only register the I2C device for the current board revision i2c_bcm2708: Fix clock reference counting Fix grabbing lock from atomic context in i2c driver 2 main changes: - check for timeouts in the bcm2708_bsc_setup function as indicated by this comment: /* poll for transfer start bit (should only take 1-20 polls) */ This implies that the setup function can now fail so account for this everywhere it's called - Removed the clk_get_rate call from inside the setup function as it locks a mutex and that's not ok since we call it from under a spin lock. i2c-bcm2708: When using DT, leave the GPIO setup to pinctrl i2c-bcm2708: Increase timeouts to allow larger transfers Use the timeout value provided by the I2C_TIMEOUT ioctl when waiting for completion. The default timeout is 1 second. See: https://github.com/raspberrypi/linux/issues/260 i2c-bcm2708/BCM270X_DT: Add support for I2C2 The third I2C bus (I2C2) is normally reserved for HDMI use. Careless use of this bus can break an attached display - use with caution. It is recommended to disable accesses by VideoCore by setting hdmi_ignore_edid=1 or hdmi_edid_file=1 in config.txt. The interface is disabled by default - enable using the i2c2_iknowwhatimdoing DT parameter. bcm2708-spi: Don't use static pin configuration with DT Also remove superfluous error checking - the SPI framework ensures the validity of the chip_select value. i2c-bcm2708: Remove non-DT support Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:59 UTC
d83cec3 popcornmix 26 March 2013, 19:24:24 UTC Added hwmon/thermal driver for reporting core temperature. Thanks Dorian BCM270x: Move thermal sensor to Device Tree Add Device Tree support to bcm2835-thermal driver. Add thermal sensor device to Device Tree. Don't add platform device when booting in DT mode. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:58 UTC
a3e1999 popcornmix 02 July 2013, 23:49:20 UTC Add cpufreq driver Signed-off-by: popcornmix <popcornmix@gmail.com> 13 November 2015, 17:16:57 UTC
92b8b1e Aron Szabo 16 June 2012, 10:15:55 UTC lirc: added support for RaspberryPi GPIO lirc_rpi: Use read_current_timer to determine transmitter delay. Thanks to jjmz and others See: https://github.com/raspberrypi/linux/issues/525 lirc: Remove restriction on gpio pins that can be used with lirc Compute Module, for example could use different pins lirc_rpi: Add parameter to specify input pin pull Depending on the connected IR circuitry it might be desirable to change the gpios internal pull from it pull-down default behaviour. Add a module parameter to allow the user to set it explicitly. Signed-off-by: Julian Scheel <julian@jusst.de> lirc-rpi: Use the higher-level irq control functions This module used to access the irq_chip methods of the gpio controller directly, rather than going through the standard enable_irq/irq_set_irq_type functions. This caused problems on pinctrl-bcm2835 which only implements the irq_enable/disable methods and not irq_unmask/mask. lirc-rpi: Correct the interrupt usage 1) Correct the use of enable_irq (i.e. don't call it so often) 2) Correct the shutdown sequence. 3) Avoid a bcm2708_gpio driver quirk by setting the irq flags earlier lirc-rpi: use getnstimeofday instead of read_current_timer read_current_timer isn't guaranteed to return values in microseconds, and indeed it doesn't on a Pi2. Issue: linux#827 lirc-rpi: Add device tree support, and a suitable overlay The overlay supports DT parameters that match the old module parameters, except that gpio_in_pull should be set using the strings "up", "down" or "off". lirc-rpi: Also support pinctrl-bcm2835 in non-DT mode 13 November 2015, 17:16:57 UTC
30389e2 Luke Wren 05 September 2015, 00:16:10 UTC Add SMI NAND driver Signed-off-by: Luke Wren <wren6991@gmail.com> 13 November 2015, 17:16:56 UTC
c172dbb Luke Wren 05 September 2015, 00:14:45 UTC Add SMI driver Signed-off-by: Luke Wren <wren6991@gmail.com> 13 November 2015, 17:16:55 UTC
9841bd8 Luke Wren 21 August 2015, 22:14:48 UTC Add /dev/gpiomem device for rootless user GPIO access Signed-off-by: Luke Wren <luke@raspberrypi.org> bcm2835-gpiomem: Fix for ARCH_BCM2835 builds Build on ARCH_BCM2835, and fail to probe if no IO resource. See: https://github.com/raspberrypi/linux/issues/1154 13 November 2015, 17:16:54 UTC
0d87bac Tim Gover 22 July 2014, 14:41:04 UTC vcsm: VideoCore shared memory service for BCM2835 Add experimental support for the VideoCore shared memory service. This allows user processes to allocate memory from VideoCore's GPU relocatable heap and mmap the buffers. Additionally, the memory handles can passed to other VideoCore services such as MMAL, OpenMax and DispmanX TODO * This driver was originally released for BCM28155 which has a different cache architecture to BCM2835. Consequently, in this release only uncached mappings are supported. However, there's no fundamental reason which cached mappings cannot be support or BCM2835 * More refactoring is required to remove the typedefs. * Re-enable the some of the commented out debug-fs statistics which were disabled when migrating code from proc-fs. * There's a lot of code to support sharing of VCSM in order to support Android. This could probably done more cleanly or perhaps just removed. Signed-off-by: Tim Gover <timgover@gmail.com> config: Disable VC_SM for now to fix hang with cutdown kernel vcsm: Use boolean as it cannot be built as module On building the bcm_vc_sm as a module we get the following error: v7_dma_flush_range and do_munmap are undefined in vc-sm.ko. Fix by making it not an option to build as module vcsm: Add ioctl for custom cache flushing vc-sm: Move headers out of arch directory Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:54 UTC
9fb14fa popcornmix 17 June 2015, 15:07:06 UTC vc_mem: Add vc_mem driver Signed-off-by: popcornmix <popcornmix@gmail.com> BCM270x: Move vc_mem Make the vc_mem module available for ARCH_BCM2835 by moving it. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:53 UTC
247bd43 popcornmix 02 July 2013, 22:42:01 UTC bcm2708 vchiq driver Signed-off-by: popcornmix <popcornmix@gmail.com> vchiq: create_pagelist copes with vmalloc memory Signed-off-by: Daniel Stone <daniels@collabora.com> vchiq: fix the shim message release Signed-off-by: Daniel Stone <daniels@collabora.com> vchiq: export additional symbols Signed-off-by: Daniel Stone <daniels@collabora.com> VCHIQ: Make service closure fully synchronous (drv) This is one half of a two-part patch, the other half of which is to the vchiq_lib user library. With these patches, calls to vchiq_close_service and vchiq_remove_service won't return until any associated callbacks have been delivered to the callback thread. VCHIQ: Add per-service tracing The new service option VCHIQ_SERVICE_OPTION_TRACE is a boolean that toggles tracing for the specified service. This commit also introduces vchi_service_set_option and the associated option VCHI_SERVICE_OPTION_TRACE. vchiq: Make the synchronous-CLOSE logic more tolerant vchiq: Move logging control into debugfs vchiq: Take care of a corner case tickled by VCSM Closing a connection that isn't fully open requires care, since one side does not know the other side's port number. Code was present to handle the case where a CLOSE is sent immediately after an OPEN, i.e. before the OPENACK has been received, but this was incorrectly being used when an OPEN from a client using port 0 was rejected. (In the observed failure, the host was attempting to use the VCSM service, which isn't present in the 'cutdown' firmware. The failure was intermittent because sometimes the keepalive service would grab port 0.) This case can be distinguished because the client's remoteport will still be VCHIQ_PORT_FREE, and the srvstate will be OPENING. Either condition is sufficient to differentiate it from the special case described above. vchiq: Avoid high load when blocked and unkillable vchiq: Include SIGSTOP and SIGCONT in list of signals not-masked by vchiq to allow gdb to work vchiq_arm: Complete support for SYNCHRONOUS mode vchiq: Remove inline from suspend/resume vchiq: Allocation does not need to be atomic vchiq: Fix wrong condition check The log level is checked from within the log call. Remove the check in the call. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> BCM270x: Add vchiq device to platform file and Device Tree Prepare to turn the vchiq module into a driver. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2708: vchiq: Add Device Tree support Turn vchiq into a driver and stop hardcoding resources. Use devm_* functions in probe path to simplify cleanup. A global variable is used to hold the register address. This is done to keep this patch as small as possible. Also make available on ARCH_BCM2835. Based on work by Lubomir Rintel. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> vchiq: Change logging level for inbound data vchiq_arm: Two cacheing fixes 1) Make fragment size vary with cache line size Without this patch, non-cache-line-aligned transfers may corrupt (or be corrupted by) adjacent data structures. Both ARM and VC need to be updated to enable this feature. This is ensured by having the loader apply a new DT parameter - cache-line-size. The existence of this parameter guarantees that the kernel is capable, and the parameter will only be modified from the safe default if the loader is capable. 2) Flush/invalidate vmalloc'd memory, and invalidate after reads vchiq: fix NULL pointer dereference when closing driver The following code run as root will cause a null pointer dereference oops: int fd = open("/dev/vc-cma", O_RDONLY); if (fd < 0) err(1, "open failed"); (void)close(fd); [ 1704.877721] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 1704.877725] pgd = b899c000 [ 1704.877736] [00000000] *pgd=37fab831, *pte=00000000, *ppte=00000000 [ 1704.877748] Internal error: Oops: 817 [#1] PREEMPT SMP ARM [ 1704.877765] Modules linked in: evdev i2c_bcm2708 uio_pdrv_genirq uio [ 1704.877774] CPU: 2 PID: 3656 Comm: stress-ng-fstat Not tainted 3.19.1-12-generic-bcm2709 #12-Ubuntu [ 1704.877777] Hardware name: BCM2709 [ 1704.877783] task: b8ab9b00 ti: b7e68000 task.ti: b7e68000 [ 1704.877798] PC is at __down_interruptible+0x50/0xec [ 1704.877806] LR is at down_interruptible+0x5c/0x68 [ 1704.877813] pc : [<80630ee8>] lr : [<800704b0>] psr: 60080093 sp : b7e69e50 ip : b7e69e88 fp : b7e69e84 [ 1704.877817] r10: b88123c8 r9 : 00000010 r8 : 00000001 [ 1704.877822] r7 : b8ab9b00 r6 : 7fffffff r5 : 80a1cc34 r4 : 80a1cc34 [ 1704.877826] r3 : b7e69e50 r2 : 00000000 r1 : 00000000 r0 : 80a1cc34 [ 1704.877833] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 1704.877838] Control: 10c5387d Table: 3899c06a DAC: 00000015 [ 1704.877843] Process do-oops (pid: 3656, stack limit = 0xb7e68238) [ 1704.877848] Stack: (0xb7e69e50 to 0xb7e6a000) [ 1704.877856] 9e40: 80a1cc3c 00000000 00000010 b88123c8 [ 1704.877865] 9e60: b7e69e84 80a1cc34 fff9fee9 ffffffff b7e68000 00000009 b7e69ea4 b7e69e88 [ 1704.877874] 9e80: 800704b0 80630ea4 fff9fee9 60080013 80a1cc28 fff9fee9 b7e69edc b7e69ea8 [ 1704.877884] 9ea0: 8040f558 80070460 fff9fee9 ffffffff 00000000 00000000 00000009 80a1cb7c [ 1704.877893] 9ec0: 00000000 80a1cb7c 00000000 00000010 b7e69ef4 b7e69ee0 803e1ba4 8040f514 [ 1704.877902] 9ee0: 00000e48 80a1cb7c b7e69f14 b7e69ef8 803e1c9c 803e1b74 b88123c0 b92acb18 [ 1704.877911] 9f00: b8812790 b8d815d8 b7e69f24 b7e69f18 803e2250 803e1bc8 b7e69f5c b7e69f28 [ 1704.877921] 9f20: 80167bac 803e222c 00000000 00000000 b7e69f54 b8ab9ffc 00000000 8098c794 [ 1704.877930] 9f40: b8ab9b00 8000efc4 b7e68000 00000000 b7e69f6c b7e69f60 80167d6c 80167b28 [ 1704.877939] 9f60: b7e69f8c b7e69f70 80047d38 80167d60 b7e68000 b7e68010 8000efc4 b7e69fb0 [ 1704.877949] 9f80: b7e69fac b7e69f90 80012820 80047c84 01155490 011549a8 00000001 00000006 [ 1704.877957] 9fa0: 00000000 b7e69fb0 8000ee5c 80012790 00000000 353d8c0f 7efc4308 00000000 [ 1704.877966] 9fc0: 01155490 011549a8 00000001 00000006 00000000 00000000 76cf3ba0 00000003 [ 1704.877975] 9fe0: 00000000 7efc42e4 0002272f 76e2ed66 60080030 00000003 00000000 00000000 [ 1704.877998] [<80630ee8>] (__down_interruptible) from [<800704b0>] (down_interruptible+0x5c/0x68) [ 1704.878015] [<800704b0>] (down_interruptible) from [<8040f558>] (vchiu_queue_push+0x50/0xd8) [ 1704.878032] [<8040f558>] (vchiu_queue_push) from [<803e1ba4>] (send_worker_msg+0x3c/0x54) [ 1704.878045] [<803e1ba4>] (send_worker_msg) from [<803e1c9c>] (vc_cma_set_reserve+0xe0/0x1c4) [ 1704.878057] [<803e1c9c>] (vc_cma_set_reserve) from [<803e2250>] (vc_cma_release+0x30/0x38) [ 1704.878069] [<803e2250>] (vc_cma_release) from [<80167bac>] (__fput+0x90/0x1e0) [ 1704.878082] [<80167bac>] (__fput) from [<80167d6c>] (____fput+0x18/0x1c) [ 1704.878094] [<80167d6c>] (____fput) from [<80047d38>] (task_work_run+0xc0/0xf8) [ 1704.878109] [<80047d38>] (task_work_run) from [<80012820>] (do_work_pending+0x9c/0xc4) [ 1704.878123] [<80012820>] (do_work_pending) from [<8000ee5c>] (work_pending+0xc/0x20) [ 1704.878133] Code: e50b1034 e3a01000 e50b2030 e580300c (e5823000) ..the fix is to ensure that we have actually initialized the queue before we attempt to push any items onto it. This occurs if we do an open() followed by a close() without any activity in between. Signed-off-by: Colin Ian King <colin.king@canonical.com> vchiq_arm: Sort out the vmalloc case See: https://github.com/raspberrypi/linux/issues/1055 vchiq: hack: Add include depecated dma include file 13 November 2015, 17:16:52 UTC
8e981b3 popcornmix 26 March 2012, 21:15:50 UTC bcm2708: alsa sound driver Signed-off-by: popcornmix <popcornmix@gmail.com> alsa: add mmap support and some cleanups to bcm2835 ALSA driver snd-bcm2835: Add support for spdif/hdmi passthrough This adds a dedicated subdevice which can be used for passthrough of non-audio formats (ie encoded a52) through the hdmi audio link. In addition to this driver extension an appropriate card config is required to make alsa-lib support the AES parameters for this device. snd-bcm2708: Add mutex, improve logging Fix for ALSA driver crash Avoids an issue when closing and opening vchiq where a message can arrive before service handle has been written alsa: reduce severity of expected warning message snd-bcm2708: Fix dmesg spam for non-error case alsa: Ensure mutexes are released through error paths alsa: Make interrupted close paths quieter BCM270x: Add onboard sound device to Device Tree Add Device Tree support to alsa driver. Add device to Device Tree. Don't add platform devices when booting in DT mode. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:51 UTC
9f2232e popcornmix 02 July 2013, 23:31:47 UTC cma: Add vc_cma driver to enable use of CMA Signed-off-by: popcornmix <popcornmix@gmail.com> vc_cma: Make the vc_cma area the default contiguous DMA area vc_cma: Provide empty functions when module is not built Providing empty functions saves the users from guarding the function call with an #if clause. Move __init markings from prototypes to functions. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:51 UTC
c6d9c5a Phil Elwell 25 March 2015, 17:49:47 UTC Adding bcm2835-sdhost driver, and an overlay to enable it BCM2835 has two SD card interfaces. This driver uses the other one. bcm2835-sdhost: Error handling fix, and code clarification bcm2835-sdhost: Adding overclocking option Allow a different clock speed to be substitued for a requested 50MHz. This option is exposed using the "overclock_50" DT parameter. Note that the sdhost interface is restricted to integer divisions of core_freq, and the highest sensible option for a core_freq of 250MHz is 84 (250/3 = 83.3MHz), the next being 125 (250/2) which is much too high. Use at your own risk. bcm2835-sdhost: Round up the overclock, so 62 works for 62.5Mhz Also only warn once for each overclock setting. bcm2835-sdhost: Improve error handling and recovery 1) Expose the hw_reset method to the MMC framework, removing many internal calls by the driver. 2) Reduce overclock setting on error. 3) Increase timeout to cope with high capacity cards. 4) Add properties and parameters to control pio_limit and debug. 5) Reduce messages at probe time. bcm2835-sdhost: Further improve overclock back-off bcm2835-sdhost: Clear HBLC for PIO mode Also update pio_limit default in overlay README. bcm2835-sdhost: Add the ERASE capability See: https://github.com/raspberrypi/linux/issues/1076 bcm2835-sdhost: Ignore CRC7 for MMC CMD1 It seems that the sdhost interface returns CRC7 errors for CMD1, which is the MMC-specific SEND_OP_COND. Returning these errors to the MMC layer causes a downward spiral, but ignoring them seems to be harmless. bcm2835-mmc/sdhost: Remove ARCH_BCM2835 differences The bcm2835-mmc driver (and -sdhost driver that copied from it) contains code to handle SDIO interrupts in a threaded interrupt handler rather than waking the MMC framework thread. The change follows a patch from Russell King that adds the facility as the preferred way of working. However, the new code path is only present in ARCH_BCM2835 builds, which I have taken to be a way of testing the waters rather than making the change across the board; I can't see any technical reason why it wouldn't be enabled for MACH_BCM270X builds. So this patch standardises on the ARCH_BCM2835 code, removing the old code paths. 13 November 2015, 17:16:50 UTC
302ef7d gellert 15 August 2014, 15:35:06 UTC MMC: added alternative MMC driver mmc: Disable CMD23 transfers on all cards Pending wire-level investigation of these types of transfers and associated errors on bcm2835-mmc, disable for now. Fallback of CMD18/CMD25 transfers will be used automatically by the MMC layer. Reported/Tested-by: Gellert Weisz <gellert@raspberrypi.org> mmc: bcm2835-mmc: enable DT support for all architectures Both ARCH_BCM2835 and ARCH_BCM270x are built with OF now. Enable Device Tree support for all architectures. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> mmc: bcm2835-mmc: fix probe error handling Probe error handling is broken in several places. Simplify error handling by using device managed functions. Replace pr_{err,info} with dev_{err,info}. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2835-mmc: Add locks when accessing sdhost registers bcm2835-mmc: Add range of debug options for slowing things down bcm2835-mmc: Add option to disable some delays bcm2835-mmc: Add option to disable MMC_QUIRK_BLK_NO_CMD23 bcm2835-mmc: Default to disabling MMC_QUIRK_BLK_NO_CMD23 bcm2835-mmc: Adding overclocking option Allow a different clock speed to be substitued for a requested 50MHz. This option is exposed using the "overclock_50" DT parameter. Note that the mmc interface is restricted to EVEN integer divisions of 250MHz, and the highest sensible option is 63 (250/4 = 62.5), the next being 125 (250/2) which is much too high. Use at your own risk. bcm2835-mmc: Round up the overclock, so 62 works for 62.5Mhz Also only warn once for each overclock setting. mmc: bcm2835-mmc: Make available on ARCH_BCM2835 Make the bcm2835-mmc driver available for use on ARCH_BCM2835. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> BCM270x_DT: add bcm2835-mmc entry Add Device Tree entry for bcm2835-mmc. In non-DT mode, don't add the device in the board file. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2835-mmc: Don't overwrite MMC capabilities from DT 13 November 2015, 17:16:49 UTC
259232a Phil Elwell 17 April 2015, 18:30:22 UTC Add blk_pos parameter to mmc multi_io_quirk callback 13 November 2015, 17:16:48 UTC
422939a Florian Meier 22 November 2013, 13:22:53 UTC dmaengine: Add support for BCM2708 Add support for DMA controller of BCM2708 as used in the Raspberry Pi. Currently it only supports cyclic DMA. Signed-off-by: Florian Meier <florian.meier@koalo.de> dmaengine: expand functionality by supporting scatter/gather transfers sdhci-bcm2708 and dma.c: fix for LITE channels DMA: fix cyclic LITE length overflow bug dmaengine: bcm2708: Remove chancnt affectations Mirror bcm2835-dma.c commit 9eba5536a7434c69d8c185d4bd1c70734d92287d: chancnt is already filled by dma_async_device_register, which uses the channel list to know how much channels there is. Since it's already filled, we can safely remove it from the drivers' probe function. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: overwrite dreq only if it is not set dreq is set when the DMA channel is fetched from Device Tree. slave_id is set using dmaengine_slave_config(). Only overwrite dreq with slave_id if it is not set. dreq/slave_id in the cyclic DMA case is not touched, because I don't have hardware to test with. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: do device registration in the board file Don't register the device in the driver. Do it in the board file. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: don't restrict DT support to ARCH_BCM2835 Both ARCH_BCM2835 and ARCH_BCM270x are built with OF now. Add Device Tree support to the non ARCH_BCM2835 case. Use the same driver name regardless of architecture. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> BCM270x_DT: add bcm2835-dma entry Add Device Tree entry for bcm2835-dma. The entry doesn't contain any resources since they are handled by the arch/arm/mach-bcm270x/dma.c driver. In non-DT mode, don't add the device in the board file. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> bcm2708-dmaengine: Add debug options BCM270x: Add memory and irq resources to dmaengine device and DT Prepare for merging of the legacy DMA API arch driver dma.c with bcm2708-dmaengine by adding memory and irq resources both to platform file device and Device Tree node. Don't use BCM_DMAMAN_DRIVER_NAME so we don't have to include mach/dma.h Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: Merge with arch dma.c driver and disable dma.c Merge the legacy DMA API driver with bcm2708-dmaengine. This is done so we can use bcm2708_fb on ARCH_BCM2835 (mailbox driver is also needed). Changes to the dma.c code: - Use BIT() macro. - Cutdown some comments to one line. - Add mutex to vc_dmaman and use this, since the dev lock is locked during probing of the engine part. - Add global g_dmaman variable since drvdata is used by the engine part. - Restructure for readability: vc_dmaman_chan_alloc() vc_dmaman_chan_free() bcm_dma_chan_free() - Restructure bcm_dma_chan_alloc() to simplify error handling. - Use device irq resources instead of hardcoded bcm_dma_irqs table. - Remove dev_dmaman_register() and code it directly. - Remove dev_dmaman_deregister() and code it directly. - Simplify bcm_dmaman_probe() using devm_* functions. - Get dmachans from DT if available. - Keep 'dma.dmachans' module argument name for backwards compatibility. Make it available on ARCH_BCM2835 as well. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: set residue_granularity field bcm2708-dmaengine supports residue reporting at burst level but didn't report this via the residue_granularity field. Without this field set properly we get playback issues with I2S cards. dmaengine: bcm2708-dmaengine: Fix memory leak when stopping a running transfer bcm2708-dmaengine: Use more DMA channels (but not 12) 1) Only the bcm2708_fb drivers uses the legacy DMA API, and it requires a BULK-capable channel, so all other types (FAST, NORMAL and LITE) can be made available to the regular DMA API. 2) DMA channels 11-14 share an interrupt. The driver can't handle this, so don't use channels 12-14 (12 was used, probably because it appears to have an interrupt, but in reality that interrupt is for activity on ANY channel). This may explain a lockup encountered when running out of DMA channels. The combined effect of this patch is to leave 7 DMA channels available + channel 0 for bcm2708_fb via the legacy API. See: https://github.com/raspberrypi/linux/issues/1110 https://github.com/raspberrypi/linux/issues/1108 dmaengine: bcm2708: Make legacy API available for bcm2835-dma bcm2708_fb uses the legacy DMA API, so in order to start using bcm2835-dma, bcm2835-dma has to support the legacy API. Make this possible by exporting bcm_dmaman_probe() and bcm_dmaman_remove(). Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: Change DT compatible string Both bcm2835-dma and bcm2708-dmaengine have the same compatible string. So change compatible to "brcm,bcm2708-dma". Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dmaengine: bcm2708: Remove driver but keep legacy API Dropping non-DT support means we don't need this driver, but we still need the legacy DMA API. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:48 UTC
eb3396b popcornmix 17 June 2015, 16:06:34 UTC bcm2708 framebuffer driver Signed-off-by: popcornmix <popcornmix@gmail.com> bcm2708_fb : Implement blanking support using the mailbox property interface bcm2708_fb: Add pan and vsync controls bcm2708_fb: DMA acceleration for fb_copyarea Based on http://www.raspberrypi.org/phpBB3/viewtopic.php?p=62425#p62425 Also used Simon's dmaer_master module as a reference for tweaking DMA settings for better performance. For now busylooping only. IRQ support might be added later. With non-overclocked Raspberry Pi, the performance is ~360 MB/s for simple copy or ~260 MB/s for two-pass copy (used when dragging windows to the right). In the case of using DMA channel 0, the performance improves to ~440 MB/s. For comparison, VFP optimized CPU copy can only do ~114 MB/s in the same conditions (hindered by reading uncached source buffer). Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> bcm2708_fb: report number of dma copies Add a counter (exported via debugfs) reporting the number of dma copies that the framebuffer driver has done, in order to help evaluate different optimization strategies. Signed-off-by: Luke Diamand <luked@broadcom.com> bcm2708_fb: use IRQ for DMA copies The copyarea ioctl() uses DMA to speed things along. This was busy-waiting for completion. This change supports using an interrupt instead for larger transfers. For small transfers, busy-waiting is still likely to be faster. Signed-off-by: Luke Diamand <luke@diamand.org> bcm2708: Make ioctl logging quieter video: fbdev: bcm2708_fb: Don't panic on error No need to panic the kernel if the video driver fails. Just print a message and return an error. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> fbdev: bcm2708_fb: Add ARCH_BCM2835 support Add Device Tree support. Pass the device to dma_alloc_coherent() in order to get the correct bus address on ARCH_BCM2835. Use the new DMA legacy API header file. Including <mach/platform.h> is not necessary. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> BCM270x_DT: Add bcm2708-fb device Add bcm2708-fb to Device Tree and don't add the platform device when booting in DT mode. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:47 UTC
396a2ec popcornmix 01 May 2013, 18:46:17 UTC Add dwc_otg driver Signed-off-by: popcornmix <popcornmix@gmail.com> usb: dwc: fix lockdep false positive Signed-off-by: Kari Suvanto <karis79@gmail.com> usb: dwc: fix inconsistent lock state Signed-off-by: Kari Suvanto <karis79@gmail.com> Add FIQ patch to dwc_otg driver. Enable with dwc_otg.fiq_fix_enable=1. Should give about 10% more ARM performance. Thanks to Gordon and Costas Avoid dynamic memory allocation for channel lock in USB driver. Thanks ddv2005. Add NAK holdoff scheme. Enabled by default, disable with dwc_otg.nak_holdoff_enable=0. Thanks gsh Make sure we wait for the reset to finish dwc_otg: fix bug in dwc_otg_hcd.c resulting in silent kernel memory corruption, escalating to OOPS under high USB load. dwc_otg: Fix unsafe access of QTD during URB enqueue In dwc_otg_hcd_urb_enqueue during qtd creation, it was possible that the transaction could complete almost immediately after the qtd was assigned to a host channel during URB enqueue, which meant the qtd pointer was no longer valid having been completed and removed. Usually, this resulted in an OOPS during URB submission. By predetermining whether transactions need to be queued or not, this unsafe pointer access is avoided. This bug was only evident on the Pi model A where a device was attached that had no periodic endpoints (e.g. USB pendrive or some wlan devices). dwc_otg: Fix incorrect URB allocation error handling If the memory allocation for a dwc_otg_urb failed, the kernel would OOPS because for some reason a member of the *unallocated* struct was set to zero. Error handling changed to fail correctly. dwc_otg: fix potential use-after-free case in interrupt handler If a transaction had previously aborted, certain interrupts are enabled to track error counts and reset where necessary. On IN endpoints the host generates an ACK interrupt near-simultaneously with completion of transfer. In the case where this transfer had previously had an error, this results in a use-after-free on the QTD memory space with a 1-byte length being overwritten to 0x00. dwc_otg: add handling of SPLIT transaction data toggle errors Previously a data toggle error on packets from a USB1.1 device behind a TT would result in the Pi locking up as the driver never handled the associated interrupt. Patch adds basic retry mechanism and interrupt acknowledgement to cater for either a chance toggle error or for devices that have a broken initial toggle state (FT8U232/FT232BM). dwc_otg: implement tasklet for returning URBs to usbcore hcd layer The dwc_otg driver interrupt handler for transfer completion will spend a very long time with interrupts disabled when a URB is completed - this is because usb_hcd_giveback_urb is called from within the handler which for a USB device driver with complicated processing (e.g. webcam) will take an exorbitant amount of time to complete. This results in missed completion interrupts for other USB packets which lead to them being dropped due to microframe overruns. This patch splits returning the URB to the usb hcd layer into a high-priority tasklet. This will have most benefit for isochronous IN transfers but will also have incidental benefit where multiple periodic devices are active at once. dwc_otg: fix NAK holdoff and allow on split transactions only This corrects a bug where if a single active non-periodic endpoint had at least one transaction in its qh, on frnum == MAX_FRNUM the qh would get skipped and never get queued again. This would result in a silent device until error detection (automatic or otherwise) would either reset the device or flush and requeue the URBs. Additionally the NAK holdoff was enabled for all transactions - this would potentially stall a HS endpoint for 1ms if a previous error state enabled this interrupt and the next response was a NAK. Fix so that only split transactions get held off. dwc_otg: Call usb_hcd_unlink_urb_from_ep with lock held in completion handler usb_hcd_unlink_urb_from_ep must be called with the HCD lock held. Calling it asynchronously in the tasklet was not safe (regression in c4564d4a1a0a9b10d4419e48239f5d99e88d2667). This change unlinks it from the endpoint prior to queueing it for handling in the tasklet, and also adds a check to ensure the urb is OK to be unlinked before doing so. NULL pointer dereference kernel oopses had been observed in usb_hcd_giveback_urb when a USB device was unplugged/replugged during data transfer. This effect was reproduced using automated USB port power control, hundreds of replug events were performed during active transfers to confirm that the problem was eliminated. USB fix using a FIQ to implement split transactions This commit adds a FIQ implementaion that schedules the split transactions using a FIQ so we don't get held off by the interrupt latency of Linux dwc_otg: fix device attributes and avoid kernel warnings on boot dcw_otg: avoid logging function that can cause panics See: https://github.com/raspberrypi/firmware/issues/21 Thanks to cleverca22 for fix dwc_otg: mask correct interrupts after transaction error recovery The dwc_otg driver will unmask certain interrupts on a transaction that previously halted in the error state in order to reset the QTD error count. The various fine-grained interrupt handlers do not consider that other interrupts besides themselves were unmasked. By disabling the two other interrupts only ever enabled in DMA mode for this purpose, we can avoid unnecessary function calls in the IRQ handler. This will also prevent an unneccesary FIQ interrupt from being generated if the FIQ is enabled. dwc_otg: fiq: prevent FIQ thrash and incorrect state passing to IRQ In the case of a transaction to a device that had previously aborted due to an error, several interrupts are enabled to reset the error count when a device responds. This has the side-effect of making the FIQ thrash because the hardware will generate multiple instances of a NAK on an IN bulk/interrupt endpoint and multiple instances of ACK on an OUT bulk/interrupt endpoint. Make the FIQ mask and clear the associated interrupts. Additionally, on non-split transactions make sure that only unmasked interrupts are cleared. This caused a hard-to-trigger but serious race condition when you had the combination of an endpoint awaiting error recovery and a transaction completed on an endpoint - due to the sequencing and timing of interrupts generated by the dwc_otg core, it was possible to confuse the IRQ handler. Fix function tracing dwc_otg: whitespace cleanup in dwc_otg_urb_enqueue dwc_otg: prevent OOPSes during device disconnects The dwc_otg_urb_enqueue function is thread-unsafe. In particular the access of urb->hcpriv, usb_hcd_link_urb_to_ep, dwc_otg_urb->qtd and friends does not occur within a critical section and so if a device was unplugged during activity there was a high chance that the usbcore hub_thread would try to disable the endpoint with partially- formed entries in the URB queue. This would result in BUG() or null pointer dereferences. Fix so that access of urb->hcpriv, enqueuing to the hardware and adding to usbcore endpoint URB lists is contained within a single critical section. dwc_otg: prevent BUG() in TT allocation if hub address is > 16 A fixed-size array is used to track TT allocation. This was previously set to 16 which caused a crash because dwc_otg_hcd_allocate_port would read past the end of the array. This was hit if a hub was plugged in which enumerated as addr > 16, due to previous device resets or unplugs. Also add #ifdef FIQ_DEBUG around hcd->hub_port_alloc[], which grows to a large size if 128 hub addresses are supported. This field is for debug only for tracking which frame an allocate happened in. dwc_otg: make channel halts with unknown state less damaging If the IRQ received a channel halt interrupt through the FIQ with no other bits set, the IRQ would not release the host channel and never complete the URB. Add catchall handling to treat as a transaction error and retry. dwc_otg: fiq_split: use TTs with more granularity This fixes certain issues with split transaction scheduling. - Isochronous multi-packet OUT transactions now hog the TT until they are completed - this prevents hubs aborting transactions if they get a periodic start-split out-of-order - Don't perform TT allocation on non-periodic endpoints - this allows simultaneous use of the TT's bulk/control and periodic transaction buffers This commit will mainly affect USB audio playback. dwc_otg: fix potential sleep while atomic during urb enqueue Fixes a regression introduced with eb1b482a. Kmalloc called from dwc_otg_hcd_qtd_add / dwc_otg_hcd_qtd_create did not always have the GPF_ATOMIC flag set. Force this flag when inside the larger critical section. dwc_otg: make fiq_split_enable imply fiq_fix_enable Failing to set up the FIQ correctly would result in "IRQ 32: nobody cared" errors in dmesg. dwc_otg: prevent crashes on host port disconnects Fix several issues resulting in crashes or inconsistent state if a Model A root port was disconnected. - Clean up queue heads properly in kill_urbs_in_qh_list by removing the empty QHs from the schedule lists - Set the halt status properly to prevent IRQ handlers from using freed memory - Add fiq_split related cleanup for saved registers - Make microframe scheduling reclaim host channels if active during a disconnect - Abort URBs with -ESHUTDOWN status response, informing device drivers so they respond in a more correct fashion and don't try to resubmit URBs - Prevent IRQ handlers from attempting to handle channel interrupts if the associated URB was dequeued (and the driver state was cleared) dwc_otg: prevent leaking URBs during enqueue A dwc_otg_urb would get leaked if the HCD enqueue function failed for any reason. Free the URB at the appropriate points. dwc_otg: Enable NAK holdoff for control split transactions Certain low-speed devices take a very long time to complete a data or status stage of a control transaction, producing NAK responses until they complete internal processing - the USB2.0 spec limit is up to 500mS. This causes the same type of interrupt storm as seen with USB-serial dongles prior to c8edb238. In certain circumstances, usually while booting, this interrupt storm could cause SD card timeouts. dwc_otg: Fix for occasional lockup on boot when doing a USB reset dwc_otg: Don't issue traffic to LS devices in FS mode Issuing low-speed packets when the root port is in full-speed mode causes the root port to stop responding. Explicitly fail when enqueuing URBs to a LS endpoint on a FS bus. Fix ARM architecture issue with local_irq_restore() If local_fiq_enable() is called before a local_irq_restore(flags) where the flags variable has the F bit set, the FIQ will be erroneously disabled. Fixup arch_local_irq_restore to avoid trampling the F bit in CPSR. Also fix some of the hacks previously implemented for previous dwc_otg incarnations. dwc_otg: fiq_fsm: Base commit for driver rewrite This commit removes the previous FIQ fixes entirely and adds fiq_fsm. This rewrite features much more complete support for split transactions and takes into account several OTG hardware bugs. High-speed isochronous transactions are also capable of being performed by fiq_fsm. All driver options have been removed and replaced with: - dwc_otg.fiq_enable (bool) - dwc_otg.fiq_fsm_enable (bool) - dwc_otg.fiq_fsm_mask (bitmask) - dwc_otg.nak_holdoff (unsigned int) Defaults are specified such that fiq_fsm behaves similarly to the previously implemented FIQ fixes. fiq_fsm: Push error recovery into the FIQ when fiq_fsm is used If the transfer associated with a QTD failed due to a bus error, the HCD would retry the transfer up to 3 times (implementing the USB2.0 three-strikes retry in software). Due to the masking mechanism used by fiq_fsm, it is only possible to pass a single interrupt through to the HCD per-transfer. In this instance host channels would fall off the radar because the error reset would function, but the subsequent channel halt would be lost. Push the error count reset into the FIQ handler. fiq_fsm: Implement timeout mechanism For full-speed endpoints with a large packet size, interrupt latency runs the risk of the FIQ starting a transaction too late in a full-speed frame. If the device is still transmitting data when EOF2 for the downstream frame occurs, the hub will disable the port. This change is not reflected in the hub status endpoint and the device becomes unresponsive. Prevent high-bandwidth transactions from being started too late in a frame. The mechanism is not guaranteed: a combination of bit stuffing and hub latency may still result in a device overrunning. fiq_fsm: fix bounce buffer utilisation for Isochronous OUT Multi-packet isochronous OUT transactions were subject to a few bounday bugs. Fix them. Audio playback is now much more robust: however, an issue stands with devices that have adaptive sinks - ALSA plays samples too fast. dwc_otg: Return full-speed frame numbers in HS mode The frame counter increments on every *microframe* in high-speed mode. Most device drivers expect this number to be in full-speed frames - this caused considerable confusion to e.g. snd_usb_audio which uses the frame counter to estimate the number of samples played. fiq_fsm: save PID on completion of interrupt OUT transfers Also add edge case handling for interrupt transports. Note that for periodic split IN, data toggles are unimplemented in the OTG host hardware - it unconditionally accepts any PID. fiq_fsm: add missing case for fiq_fsm_tt_in_use() Certain combinations of bitrate and endpoint activity could result in a periodic transaction erroneously getting started while the previous Isochronous OUT was still active. fiq_fsm: clear hcintmsk for aborted transactions Prevents the FIQ from erroneously handling interrupts on a timed out channel. fiq_fsm: enable by default fiq_fsm: fix dequeues for non-periodic split transactions If a dequeue happened between the SSPLIT and CSPLIT phases of the transaction, the HCD would never receive an interrupt. fiq_fsm: Disable by default fiq_fsm: Handle HC babble errors The HCTSIZ transfer size field raises a babble interrupt if the counter wraps. Handle the resulting interrupt in this case. dwc_otg: fix interrupt registration for fiq_enable=0 Additionally make the module parameter conditional for wherever hcd->fiq_state is touched. fiq_fsm: Enable by default dwc_otg: Fix various issues with root port and transaction errors Process the host port interrupts correctly (and don't trample them). Root port hotplug now functional again. Fix a few thinkos with the transaction error passthrough for fiq_fsm. fiq_fsm: Implement hack for Split Interrupt transactions Hubs aren't too picky about which endpoint we send Control type split transactions to. By treating Interrupt transfers as Control, it is possible to use the non-periodic queue in the OTG core as well as the non-periodic FIFOs in the hub itself. This massively reduces the microframe exclusivity/contention that periodic split transactions otherwise have to enforce. It goes without saying that this is a fairly egregious USB specification violation, but it works. Original idea by Hans Petter Selasky @ FreeBSD.org. dwc_otg: FIQ support on SMP. Set up FIQ stack and handler on Core 0 only. dwc_otg: introduce fiq_fsm_spin(un|)lock() SMP safety for the FIQ relies on register read-modify write cycles being completed in the correct order. Several places in the DWC code modify registers also touched by the FIQ. Protect these by a bare-bones lock mechanism. This also makes it possible to run the FIQ and IRQ handlers on different cores. fiq_fsm: fix build on bcm2708 and bcm2709 platforms dwc_otg: put some barriers back where they should be for UP bcm2709/dwc_otg: Setup FIQ on core 1 if >1 core active dwc_otg: fixup read-modify-write in critical paths Be more careful about read-modify-write on registers that the FIQ also touches. Guard fiq_fsm_spin_lock with fiq_enable check fiq_fsm: Falling out of the state machine isn't fatal This edge case can be hit if the port is disabled while the FIQ is in the middle of a transaction. Make the effects less severe. Also get rid of the useless return value. squash: dwc_otg: Allow to build without SMP usb: core: make overcurrent messages more prominent Hub overcurrent messages are more serious than "debug". Increase loglevel. usb: dwc_otg: Don't use dma_to_virt() Commit 6ce0d20 changes dma_to_virt() which breaks this driver. Open code the old dma_to_virt() implementation to work around this. Limit the use of __bus_to_virt() to cases where transfer_buffer_length is set and transfer_buffer is not set. This is done to increase the chance that this driver will also work on ARCH_BCM2835. transfer_buffer should not be NULL if the length is set, but the comment in the code indicates that there are situations where this might happen. drivers/usb/isp1760/isp1760-hcd.c also has a similar comment pointing to a possible: 'usb storage / SCSI bug'. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dwc_otg: Fix crash when fiq_enable=0 dwc_otg: fiq_fsm: Make high-speed isochronous strided transfers work properly Certain low-bandwidth high-speed USB devices (specialist audio devices, compressed-frame webcams) have packet intervals > 1 microframe. Stride these transfers in the FIQ by using the start-of-frame interrupt to restart the channel at the right time. dwc_otg: Force host mode to fix incorrect compute module boards dwc_otg: Add ARCH_BCM2835 support Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dwc_otg: Simplify FIQ irq number code Dropping ATAGS means we can simplify the FIQ irq number code. Also add error checking on the returned irq number. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> dwc_otg: Remove duplicate gadget probe/unregister function 13 November 2015, 17:16:46 UTC
2240146 popcornmix 11 November 2015, 21:01:15 UTC squash: include ARCH_BCM2708 / ARCH_BCM2709 13 November 2015, 17:16:45 UTC
ec845a4 popcornmix 12 May 2013, 11:24:19 UTC Main bcm2708/bcm2709 linux port Signed-off-by: popcornmix <popcornmix@gmail.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 13 November 2015, 17:16:43 UTC
7296dc4 Noralf Trønnes 26 June 2015, 12:21:20 UTC firmware: bcm2835: Add missing property tags Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 12 November 2015, 00:32:53 UTC
c489dd0 Noralf Trønnes 15 August 2015, 18:50:02 UTC bcm2835: Add support for uart1 This is a hack until a proper solution is agreed upon. Martin Sperl is doing some work in this area. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 12 November 2015, 00:32:52 UTC
4da143b Matthias Reichl 11 October 2015, 10:28:30 UTC bcm2835-dma: Limit cyclic transfers on lite channels to 32k Transfers larger than 32k cause repeated clicking with I2S soundcards. The exact reason is yet unknown, so limit to 32k as bcm2708-dmaengine did as an intermediate fix. 11 November 2015, 23:35:42 UTC
e0b1636 Matthias Reichl 10 October 2015, 10:29:18 UTC bcm2835-dma: Fix dreq not set for slave transfers Set dreq to slave_id if it is not set like in bcm2708-dmaengine. 11 November 2015, 23:35:42 UTC
3792782 Noralf Trønnes 03 October 2015, 20:44:36 UTC dmaengine: bcm2835: Add debug option for setting wait states [by popcornmix, taken from bcm2708-dmaengine] Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 11 November 2015, 23:35:41 UTC
6eff8c6 Noralf Trønnes 03 October 2015, 20:22:55 UTC dmaengine: bcm2835: Load driver early and support legacy API Load driver early since at least bcm2708_fb doesn't support deferred probing and even if it did, we don't want the video driver deferred. Support the legacy DMA API which is needed by bcm2708_fb. Don't mask out channel 2. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 11 November 2015, 23:35:40 UTC
4aef024 Noralf Trønnes 03 October 2015, 13:58:59 UTC dmaengine: bcm2835: set residue_granularity field bcm2835-dma supports residue reporting at burst level but didn't report this via the residue_granularity field. Without this field set properly we get playback issues with I2S cards. [by HiassofT, taken from bcm2708-dmaengine] Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 11 November 2015, 23:35:39 UTC
5f780b5 Noralf Trønnes 09 April 2015, 10:34:11 UTC dmaengine: bcm2835: Add slave dma support Add slave transfer capability to BCM2835 dmaengine driver. This patch is pulled from the bcm2708-dmaengine driver in the Raspberry Pi repo. The work was done by Gellert Weisz. Tested using the bcm2835-mmc driver from the same repo. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 11 November 2015, 23:35:38 UTC
fe2a482 Matthias Reichl 11 October 2015, 13:55:21 UTC bcm2835-i2s: Enable MMAP support via a DT property Code ported from bcm2708-i2s driver in Raspberry Pi tree. RPi commit 7ee829fd77a30127db5d0b3c7d79b8718166e568 ("bcm2708-i2s: Enable MMAP support via a DT property and overlay") The i2s driver used to claim to support MMAP, but that feature was disabled when some problems were found. Add the ability to enable this feature through Device Tree, using the i2s-mmap overlay. See: #1004 Signed-off-by: Matthias Reichl <hias@horus.com> 11 November 2015, 23:35:37 UTC
e325821 Matthias Reichl 11 October 2015, 13:35:20 UTC bcm2835-i2s: Register PCM device Code ported from bcm2708-i2s driver in Raspberry Pi tree. RPi commit ba46b4935a23aa2caac1855ead52a035d4776680 ("ASoC: Add support for BCM2708") This driver adds support for digital audio (I2S) for the BCM2708 SoC that is used by the Raspberry Pi. External audio codecs can be connected to the Raspberry Pi via P5 header. It relies on cyclic DMA engine support for BCM2708. Signed-off-by: Florian Meier <florian.meier@koalo.de> Signed-off-by: Matthias Reichl <hias@horus.com> 11 November 2015, 23:35:37 UTC
d3e6759 Matthias Reichl 11 October 2015, 13:49:51 UTC bcm2835-i2s: Eliminate debugfs directory error Code ported from bcm2708-i2s driver in Raspberry Pi tree. RPi commit fd7d7a3dbe9262d16971ef81c234ed28c6499dd7 ("bcm2708: Eliminate i2s debugfs directory error") Qualify the two regmap ranges uses by bcm2708-i2s ('-i2s' and '-clk') to avoid the name clash when registering debugfs entries. Signed-off-by: Matthias Reichl <hias@horus.com> 11 November 2015, 23:35:36 UTC
663abcd Matthias Reichl 11 October 2015, 13:25:51 UTC bcm2835-i2s: setup clock only if CPU is clock master Code ported from bcm2708-i2s driver in Raspberry Pi tree. RPi commit c14827ecdaa36607f6110f9ce8df96e698672191 ("bcm2708: Allow option card devices to be configured via DT") Original work by Zoltan Szenczi, committed to RPi tree by Phil Elwell. Signed-off-by: Matthias Reichl <hias@horus.com> 11 November 2015, 23:35:35 UTC
6fc2e3b Matthias Reichl 11 October 2015, 13:21:16 UTC bcm2835-i2s: add 24bit support, update bclk_ratio to more correct values Code ported from bcm2708-i2s driver in Raspberry Pi tree. RPi commit 62c05a0b5328d9376d39c9e74da10b8a2465c234 ("ASoC: BCM2708: Add 24 bit support") This adds 24 bit support to the I2S driver of the BCM2708. Besides enabling the 24 bit flags, it includes two bug fixes: MMAP is not supported. Claiming this leads to strange issues when the format of driver and file do not match. The datasheet states that the width extension bit should be set for widths greater than 24, but greater or equal would be correct. This follows from the definition of the width field. Signed-off-by: Florian Meier <florian.meier@koalo.de> RPi commit 3e8c672bc4e92d457aa4654bbb4cfd79a18a2327 ("bcm2708-i2s: Update bclk_ratio to more correct values") Discussion about blck_ratio affecting sound quality: https://github.com/raspberrypi/linux/issues/681 Signed-off-by: Matthias Reichl <hias@horus.com> 11 November 2015, 23:35:34 UTC
b9034bf Matthias Reichl 11 October 2015, 14:44:05 UTC bcm2835-i2s: get base address for DMA from devicetree Code copied from spi-bcm2835. Get physical address from devicetree instead of using hardcoded constant. Signed-off-by: Matthias Reichl <hias@horus.com> 11 November 2015, 23:35:33 UTC
8c42a7f Noralf Trønnes 03 June 2015, 10:26:13 UTC ARM: bcm2835: Set Serial number and Revision The VideoCore bootloader passes in Serial number and Revision number through Device Tree. Make these available to userspace through /proc/cpuinfo. Mainline status: There is a commit in linux-next that standardize passing the serial number through Device Tree (string: /serial-number): ARM: 8355/1: arch: Show the serial number from devicetree in cpuinfo There was an attempt to do the same with the revision number, but it didn't get in: [PATCH v2 1/2] arm: devtree: Set system_rev from DT revision Signed-off-by: Noralf Trønnes <noralf@tronnes.org> 11 November 2015, 23:33:11 UTC
64c0762 Phil Elwell 24 June 2015, 13:10:44 UTC spi-bcm2835: Support pin groups other than 7-11 The spi-bcm2835 driver automatically uses GPIO chip-selects due to some unreliability of the native ones. In doing so it chooses the same pins as the native chip-selects would use, but the existing code always uses pins 7 and 8, wherever the SPI function is mapped. Search the pinctrl group assigned to the driver for pins that correspond to native chip-selects, and use those for GPIO chip- selects. Signed-off-by: Phil Elwell <phil@raspberrypi.org> 11 November 2015, 23:33:10 UTC
dbb2e33 Phil Elwell 26 February 2015, 09:58:22 UTC pinctrl-bcm2835: Only request the interrupts listed in the DTB Although the GPIO controller can generate three interrupts (four counting the common one), the device tree files currently only specify two. In the absence of the third, simply don't register that interrupt (as opposed to registering 0), which has the effect of making it impossible to generate interrupts for GPIOs 46-53 which, since they share pins with the SD card interface, is unlikely to be a problem. 11 November 2015, 23:33:09 UTC
bb064e2 Phil Elwell 24 February 2015, 13:40:50 UTC pinctrl-bcm2835: Fix interrupt handling for GPIOs 28-31 and 46-53 Contrary to the documentation, the BCM2835 GPIO controller actually has four interrupt lines - one each for the three IRQ groups and one common. Rather confusingly, the GPIO interrupt groups don't correspond directly with the GPIO control banks. Instead, GPIOs 0-27 generate IRQ GPIO0, 28-45 GPIO1 and 46-53 GPIO2. Awkwardly, the GPIOS for IRQ GPIO1 straddle two 32-entry GPIO banks, so it is cleaner to split out a function to process the interrupts for a single GPIO bank. This bug has only just been observed because GPIOs above 27 can only be accessed on an old Raspberry Pi with the optional P5 header fitted, where the pins are often used for I2S instead. 11 November 2015, 23:33:08 UTC
6f55c8a Phil Elwell 04 February 2015, 10:02:24 UTC pinctrl-bcm2835: bcm2835_gpio_direction_output must set the value 11 November 2015, 23:33:08 UTC
987cba2 notro 10 July 2014, 11:59:47 UTC pinctrl-bcm2835: Set base to 0 give expected gpio numbering Signed-off-by: Noralf Tronnes <notro@tronnes.org> 11 November 2015, 23:33:07 UTC
8a75a29 Phil Elwell 30 June 2015, 13:12:42 UTC serial: 8250: Don't crash when nr_uarts is 0 11 November 2015, 23:33:06 UTC
b82af3e Noralf Trønnes 12 June 2015, 17:01:05 UTC irqchip: bcm2835: Add FIQ support Add a duplicate irq range with an offset on the hwirq's so the driver can detect that enable_fiq() is used. Tested with downstream dwc_otg USB controller driver. Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Reviewed-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org> 02 November 2015, 12:56:12 UTC
a93bbc4 Eric Anholt 04 June 2015, 20:11:46 UTC ARM: bcm2835: Add the Raspberry Pi firmware driver This gives us a function for making mailbox property channel requests of the firmware, which is most notable in that it will let us get and set clock rates. Signed-off-by: Eric Anholt <eric@anholt.net> 02 November 2015, 12:56:12 UTC
ae69485 Robert Tiemann 20 July 2015, 09:01:25 UTC BCM2835_DT: Fix I2S register map 02 November 2015, 12:56:11 UTC
9ba8263 popcornmix 18 June 2014, 12:42:01 UTC vmstat: Workaround for issue where dirty page count goes negative See: https://github.com/raspberrypi/linux/issues/617 http://www.spinics.net/lists/linux-mm/msg72236.html 02 November 2015, 12:56:11 UTC
a4f6f98 popcornmix 17 April 2015, 15:58:45 UTC smsc95xx: Disable turbo mode by default 02 November 2015, 12:56:10 UTC
e5c7b20 Steve Glendinning 19 February 2015, 18:47:12 UTC smsx95xx: fix crimes against truesize smsc95xx is adjusting truesize when it shouldn't, and following a recent patch from Eric this is now triggering warnings. This patch stops smsc95xx from changing truesize. Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> 02 November 2015, 12:56:09 UTC
6a13feb Linus Torvalds 02 November 2015, 00:05:25 UTC Linux 4.3 02 November 2015, 00:05:25 UTC
95fc00a Linus Torvalds 01 November 2015, 22:13:54 UTC Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull memremap fix from Dan Williams: "The new memremap() api introduced in the 4.3 cycle to unify/replace ioremap_cache() and ioremap_wt() is mishandling the highmem case. This patch has received a build success notification from a 0day-kbuild-robot run and has received an ack from Ard" From the commit message: "The impact of this bug is low for now since the pmem driver is the only user of memremap(), but this is important to fix before more conversions to memremap arrive in 4.4" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: memremap: fix highmem support 01 November 2015, 22:13:54 UTC
ca04d39 Linus Torvalds 01 November 2015, 19:45:26 UTC Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "This set of updates contains: - Another bugfix for the pathologic vm86 machinery. Clear thread.vm86 on fork to prevent corrupting the parent state. This comes along with an update to the vm86 selftest case - Fix another corner case in the ioapic setup code which causes a boot crash on some oddball systems - Fix the fallout from the dma allocation consolidation work, which leads to a NULL pointer dereference when the allocation code is called with a NULL device" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vm86: Set thread.vm86 to NULL on fork/clone selftests/x86: Add a fork() to entry_from_vm86 to catch fork bugs x86/ioapic: Prevent NULL pointer dereference in setup_ioapic_dest() x86/dma-mapping: Fix arch_dma_alloc_attrs() oops with NULL dev 01 November 2015, 19:45:26 UTC
f5eab26 Linus Torvalds 01 November 2015, 19:39:03 UTC Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Thomas Gleixner: "The last round of minimalistic fixes for clocksource drivers: - Prevent multiple shutdown of the sh_mtu2 clocksource - Annotate a bunch of clocksource/schedclock functions with notrace to prevent an annoying ftrace recursion issue" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/sh_mtu2: Fix multiple shutdown call issue clocksource/drivers/digicolor: Prevent ftrace recursion clocksource/drivers/fsl_ftm_timer: Prevent ftrace recursion clocksource/drivers/vf_pit_timer: Prevent ftrace recursion clocksource/drivers/prima2: Prevent ftrace recursion clocksource/drivers/samsung_pwm_timer: Prevent ftrace recursion clocksource/drivers/pistachio: Prevent ftrace recursion clocksource/drivers/arm_global_timer: Prevent ftrace recursion 01 November 2015, 19:39:03 UTC
4bf690d Linus Torvalds 01 November 2015, 19:33:04 UTC Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "The last two one-liners for 4.3 from the irqchip space: - Regression fix for armada SoC which addresses the fallout from the set_irq_flags() cleanup - Add the missing propagation of the irq_set_type() callback to the parent interrupt controller of the tegra interrupt chip" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/tegra: Propagate IRQ type setting to parent irqchip/armada-370-xp: Fix regression by clearing IRQ_NOAUTOEN 01 November 2015, 19:33:04 UTC
56ef9db Linus Torvalds 01 November 2015, 04:36:07 UTC Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "This should be our final batch of fixes for 4.3: - A patch from Sudeep Holla that fixes annotation of wakeup sources properly, old unused format seems to have spread through copying. - Two patches from Tony for OMAP. One dealing with MUSB setup problems due to runtime PM being enabled too early on the parent device. The other fixes IRQ numbering for OMAP1" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: usb: musb: omap2430: Fix regression caused by driver core change ARM: OMAP1: fix incorrect INT_DMA_LCD ARM: dts: fix gpio-keys wakeup-source property 01 November 2015, 04:36:07 UTC
060b85b Linus Torvalds 01 November 2015, 04:26:04 UTC Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is three essential bug fixes for various SCSI parts. The only affected users are SCSI multi-path via device handler (basically all the enterprise) and mvsas users. The dh bugs are an async entanglement in boot resulting in a serious WARN_ON trip and a use after free on remove leading to a crash with strict memory accounting. The mvsas bug manifests as a null deref oops but only on abort sequences; however, these can commonly occur with SATA attached devices, hence the fix" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi_dh: don't try to load a device handler during async probing scsi_dh: fix use-after-free when removing scsi device mvsas: Fix NULL pointer dereference in mvs_slot_task_free 01 November 2015, 04:26:04 UTC
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