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Build i2c_gpio module and add a device tree overlay to configure it. #1183

Merged
merged 1 commit into from
Nov 2, 2015
Merged

Build i2c_gpio module and add a device tree overlay to configure it. #1183

merged 1 commit into from
Nov 2, 2015

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ali1234
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@ali1234 ali1234 commented Nov 1, 2015

This allows to use the software/bit-banging i2c driver on Raspberry Pi GPIOs. GPIO pins and clock speed can be selected at boot time with overlay params.

This is useful for talking to I2C devices which need I2C_M_NOSTART or clock stretching.

@pelwell
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pelwell commented Nov 2, 2015

Thanks - this looks like it could be helpful for some users. It isn't so easy for another overlay to make use of it because of the way labels defined within overlays aren't exported (there is a workaround that involves targetting a fragment at the /__symbols__ node), but I can revisit this when I expand the overlay functionality.

@popcornmix
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No objections.

pelwell added a commit that referenced this pull request Nov 2, 2015
@pelwell
Merge pull request #1183 from ali1234/rpi-4.1.y
4b796cf 
Build i2c_gpio module and add a device tree overlay to configure it.
@pelwell pelwell merged commit 4b796cf into raspberrypi:rpi-4.1.y Nov 2, 2015
popcornmix added a commit to raspberrypi/firmware that referenced this pull request Nov 6, 2015
@popcornmix
firmware: di_adv: Move to new scheme where qpu code handles top/botto…
591b25a 
…m edges

See: #463

firmware: di_adv: Add config setting to add nop delays to shader
See: http://forum.kodi.tv/showthread.php?tid=231092&pid=2150605#pid2150605

firmware: vcilcs: Avoid a potential deadlock when very threaded
See: #449

firmware: vrf: Add spinlock around vrf acquire/release calls to avoid restoring an invalid p10 from ISR context

firmware: rpi_display: only ratelimit if the backlight is actually changed
See: raspberrypi/linux#1179

firmware: di_adv: Support multiple instances of qpu deinterlace at SD resolution
See: popcornmix/omxplayer#386

linux: rpi-ft5406: Use interruptible sleep to avoid high load reported
See: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=125034

linux: dts: Added overlay for Adafruit PiTFT 2.8 capacitive touch screen
See: raspberrypi/linux#1192

linux: config: Add MCP320X
See: raspberrypi/linux#1189

linux: Build i2c_gpio module and add a device tree overlay to configure it
See: raspberrypi/linux#1183
popcornmix added a commit to Hexxeh/rpi-firmware that referenced this pull request Nov 6, 2015
@popcornmix
firmware: di_adv: Move to new scheme where qpu code handles top/botto…
2b42a48 
…m edges

See: raspberrypi/firmware#463

firmware: di_adv: Add config setting to add nop delays to shader
See: http://forum.kodi.tv/showthread.php?tid=231092&pid=2150605#pid2150605

firmware: vcilcs: Avoid a potential deadlock when very threaded
See: raspberrypi/firmware#449

firmware: vrf: Add spinlock around vrf acquire/release calls to avoid restoring an invalid p10 from ISR context

firmware: rpi_display: only ratelimit if the backlight is actually changed
See: raspberrypi/linux#1179

firmware: di_adv: Support multiple instances of qpu deinterlace at SD resolution
See: popcornmix/omxplayer#386

linux: rpi-ft5406: Use interruptible sleep to avoid high load reported
See: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=125034

linux: dts: Added overlay for Adafruit PiTFT 2.8 capacitive touch screen
See: raspberrypi/linux#1192

linux: config: Add MCP320X
See: raspberrypi/linux#1189

linux: Build i2c_gpio module and add a device tree overlay to configure it
See: raspberrypi/linux#1183
neuschaefer pushed a commit to neuschaefer/raspi-binary-firmware that referenced this pull request Feb 27, 2017
@popcornmix
firmware: di_adv: Move to new scheme where qpu code handles top/botto…
0a6c54c 
…m edges

See: raspberrypi#463

firmware: di_adv: Add config setting to add nop delays to shader
See: http://forum.kodi.tv/showthread.php?tid=231092&pid=2150605#pid2150605

firmware: vcilcs: Avoid a potential deadlock when very threaded
See: raspberrypi#449

firmware: vrf: Add spinlock around vrf acquire/release calls to avoid restoring an invalid p10 from ISR context

firmware: rpi_display: only ratelimit if the backlight is actually changed
See: raspberrypi/linux#1179

firmware: di_adv: Support multiple instances of qpu deinterlace at SD resolution
See: popcornmix/omxplayer#386

linux: rpi-ft5406: Use interruptible sleep to avoid high load reported
See: https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=125034

linux: dts: Added overlay for Adafruit PiTFT 2.8 capacitive touch screen
See: raspberrypi/linux#1192

linux: config: Add MCP320X
See: raspberrypi/linux#1189

linux: Build i2c_gpio module and add a device tree overlay to configure it
See: raspberrypi/linux#1183
popcornmix pushed a commit that referenced this pull request Jan 8, 2018
@lucasdemarchi @jnikula
drm/i915: Apply Display WA #1183 on skl, kbl, and cfl
30414f3 
Display WA #1183 was recently added to workaround
"Failures when enabling DPLL0 with eDP link rate 2.16
or 4.32 GHz and CD clock frequency 308.57 or 617.14 MHz
(CDCLK_CTL CD Frequency Select 10b or 11b) used in this
 enabling or in previous enabling."

This workaround was designed to minimize the impact only
to save the bad case with that link rates. But HW engineers
indicated that it should be safe to apply broadly, although
they were expecting the DPLL0 link rate to be unchanged on
runtime.

We need to cover 2 cases: when we are in fact enabling DPLL0
and when we are just changing the frequency with small
differences.

This is based on previous patch by Rodrigo Vivi with suggestions
from Ville Syrjälä.

Cc: Arthur J Runyan <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: [email protected]
Signed-off-by: Lucas De Marchi <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 53421c2)
[ Lucas: Backport to 4.15 adding back variable that has been removed on
  commits not meant to be backported ]
Signed-off-by: Jani Nikula <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
popcornmix pushed a commit that referenced this pull request Jan 8, 2018
@airlied
Merge tag 'drm-intel-fixes-2018-01-04' of git://anongit.freedesktop.o…
bc6fe53 
…rg/drm/drm-intel into drm-fixes

drm/i915 fixes for v4.15-rc7
- couple of documentation build fixes
- serialize non-blocking modesets
- prevent DMC from messing up GMBUS transfers
- PSR regression fix

* tag 'drm-intel-fixes-2018-01-04' of git://anongit.freedesktop.org/drm/drm-intel:
  drm/i915: Apply Display WA #1183 on skl, kbl, and cfl
  docs: fix, intel_guc_loader.c has been moved to intel_guc_fw.c
  documentation/gpu/i915: fix docs build error after file rename
  drm/i915: Put all non-blocking modesets onto an ordered wq
  drm/i915: Disable DC states around GMBUS on GLK
  drm/i915/psr: Fix register name mess up.
popcornmix pushed a commit that referenced this pull request Jan 8, 2018
@torvalds
Merge tag 'drm-fixes-for-v4.15-rc7' of git://people.freedesktop.org/~…
5866bec 
…airlied/linux

Pull drm fixes from Dave Airlie:
 "Just collecting some fixes to finish my hoildays :-).

  A few fixes for i915 (one documentation build fix), one ttm fix, one
  AMD display fix, one omapdrm fix, and a set of armada fixes from
  Russell.

  All seem pretty small, you can now return to your latest security news
  site"

* tag 'drm-fixes-for-v4.15-rc7' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: Apply Display WA #1183 on skl, kbl, and cfl
  drm/ttm: check the return value of kzalloc
  drm/amd/display: call set csc_default if enable adjustment is false
  docs: fix, intel_guc_loader.c has been moved to intel_guc_fw.c
  omapdrm/dss/hdmi4_cec: fix interrupt handling
  documentation/gpu/i915: fix docs build error after file rename
  drm/i915: Put all non-blocking modesets onto an ordered wq
  drm/i915: Disable DC states around GMBUS on GLK
  drm/i915/psr: Fix register name mess up.
  drm/armada: fix YUV planar format framebuffer offsets
  drm/armada: improve efficiency of armada_drm_plane_calc_addrs()
  drm/armada: fix UV swap code
  drm/armada: fix SRAM powerdown
  drm/armada: fix leak of crtc structure
popcornmix pushed a commit that referenced this pull request Jan 10, 2018
@lucasdemarchi @gregkh
drm/i915: Apply Display WA #1183 on skl, kbl, and cfl
5d8c5be 
commit 30414f3 upstream.

Display WA #1183 was recently added to workaround
"Failures when enabling DPLL0 with eDP link rate 2.16
or 4.32 GHz and CD clock frequency 308.57 or 617.14 MHz
(CDCLK_CTL CD Frequency Select 10b or 11b) used in this
 enabling or in previous enabling."

This workaround was designed to minimize the impact only
to save the bad case with that link rates. But HW engineers
indicated that it should be safe to apply broadly, although
they were expecting the DPLL0 link rate to be unchanged on
runtime.

We need to cover 2 cases: when we are in fact enabling DPLL0
and when we are just changing the frequency with small
differences.

This is based on previous patch by Rodrigo Vivi with suggestions
from Ville Syrjälä.

Cc: Arthur J Runyan <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Signed-off-by: Lucas De Marchi <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit 53421c2)
[ Lucas: Backport to 4.15 adding back variable that has been removed on
  commits not meant to be backported ]
Signed-off-by: Jani Nikula <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
anholt pushed a commit to anholt/linux that referenced this pull request Mar 3, 2018
@lucasdemarchi @rodrigovivi
drm/i915: Apply Display WA raspberrypi#1183 on skl, kbl, and cfl
53421c2 
Display WA raspberrypi#1183 was recently added to workaround
"Failures when enabling DPLL0 with eDP link rate 2.16
or 4.32 GHz and CD clock frequency 308.57 or 617.14 MHz
(CDCLK_CTL CD Frequency Select 10b or 11b) used in this
 enabling or in previous enabling."

This workaround was designed to minimize the impact only
to save the bad case with that link rates. But HW engineers
indicated that it should be safe to apply broadly, although
they were expecting the DPLL0 link rate to be unchanged on
runtime.

We need to cover 2 cases: when we are in fact enabling DPLL0
and when we are just changing the frequency with small
differences.

This is based on previous patch by Rodrigo Vivi with suggestions
from Ville Syrjälä.

Cc: Arthur J Runyan <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: [email protected]
Signed-off-by: Lucas De Marchi <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
ED6E0F17 pushed a commit to ED6E0F17/linux that referenced this pull request Mar 22, 2018
@gregkh
Merge 4.14.13 into android-4.14
9189141 
Changes in 4.14.13
	x86/mm: Set MODULES_END to 0xffffffffff000000
	x86/mm: Map cpu_entry_area at the same place on 4/5 level
	x86/kaslr: Fix the vaddr_end mess
	x86/events/intel/ds: Use the proper cache flush method for mapping ds buffers
	x86/tlb: Drop the _GPL from the cpu_tlbstate export
	x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm
	x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN
	kernel/acct.c: fix the acct->needcheck check in check_free_space()
	mm/mprotect: add a cond_resched() inside change_pmd_range()
	mm/sparse.c: wrong allocation for mem_section
	userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails
	btrfs: fix refcount_t usage when deleting btrfs_delayed_nodes
	efi/capsule-loader: Reinstate virtual capsule mapping
	crypto: n2 - cure use after free
	crypto: chacha20poly1305 - validate the digest size
	crypto: pcrypt - fix freeing pcrypt instances
	crypto: chelsio - select CRYPTO_GF128MUL
	drm/i915: Disable DC states around GMBUS on GLK
	drm/i915: Apply Display WA raspberrypi#1183 on skl, kbl, and cfl
	sunxi-rsb: Include OF based modalias in device uevent
	fscache: Fix the default for fscache_maybe_release_page()
	x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu()
	x86 / CPU: Always show current CPU frequency in /proc/cpuinfo
	kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL
	kernel/signal.c: protect the SIGNAL_UNKILLABLE tasks from !sig_kernel_only() signals
	kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal()
	iommu/arm-smmu-v3: Don't free page table ops twice
	iommu/arm-smmu-v3: Cope with duplicated Stream IDs
	ARC: uaccess: dont use "l" gcc inline asm constraint modifier
	powerpc/mm: Fix SEGV on mapped region to return SEGV_ACCERR
	Input: elantech - add new icbody type 15
	x86/microcode/AMD: Add support for fam17h microcode loading
	apparmor: fix regression in mount mediation when feature set is pinned
	parisc: Fix alignment of pa_tlb_lock in assembly on 32-bit SMP kernel
	parisc: qemu idle sleep support
	mtd: nand: pxa3xx: Fix READOOB implementation
	KVM: s390: fix cmma migration for multiple memory slots
	KVM: s390: prevent buffer overrun on memory hotplug during migration
	Linux 4.14.13

Signed-off-by: Greg Kroah-Hartman <[email protected]>
nathanchance pushed a commit to nathanchance/pi-kernel that referenced this pull request May 2, 2018
@ideak @gregkh
drm/i915: Enable display WA#1183 from its correct spot
bf1d702 
commit ac315c6 upstream.

The DMC FW specific part of display WA#1183 is supposed to be enabled
whenever enabling DC5 or DC6, so move it to the DC6 enable function
from the DC6 disable function.

I noticed this after Daniel's patch to remove the unused
skl_disable_dc6() function.

Fixes: 53421c2 ("drm/i915: Apply Display WA raspberrypi#1183 on skl, kbl, and cfl")
Cc: Lucas De Marchi <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit b49be66)
Signed-off-by: Joonas Lahtinen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
popcornmix pushed a commit that referenced this pull request May 5, 2018
@ideak @gregkh
drm/i915: Enable display WA#1183 from its correct spot
53934dd 
commit ac315c6 upstream.

The DMC FW specific part of display WA#1183 is supposed to be enabled
whenever enabling DC5 or DC6, so move it to the DC6 enable function
from the DC6 disable function.

I noticed this after Daniel's patch to remove the unused
skl_disable_dc6() function.

Fixes: 53421c2 ("drm/i915: Apply Display WA #1183 on skl, kbl, and cfl")
Cc: Lucas De Marchi <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit b49be66)
Signed-off-by: Joonas Lahtinen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
@begemoth0 begemoth0 mentioned this pull request Jan 3, 2019
Open
@cxueqin cxueqin mentioned this pull request Jan 5, 2019
Open
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3 participants
@ali1234 @pelwell @popcornmix