https://source.android.com/docs/security/bulletin/2023-12-01
* tag 'ASB-2023-12-05_4.19-stable' of https://android.googlesource.com/kernel/common:
Revert "macsec: use DEV_STATS_INC()"
Revert "net: add DEV_STATS_READ() helper"
Linux 4.19.300
net: sched: fix race condition in qdisc_graft()
iomap: Set all uptodate bits for an Uptodate page
scsi: virtio_scsi: limit number of hw queues by nr_cpu_ids
drm/amdgpu: fix error handling in amdgpu_bo_list_get()
ext4: remove gdb backup copy for meta bg in setup_new_flex_group_blocks
ext4: correct return value of ext4_convert_meta_bg
ext4: correct offset of gdb backup in non meta_bg group to update_backups
ext4: apply umask if ACL support is disabled
Revert "net: r8169: Disable multicast filter for RTL8168H and RTL8107E"
media: venus: hfi: add checks to handle capabilities from firmware
media: venus: hfi: fix the check to handle session buffer requirement
media: venus: hfi_parser: Add check to keep the number of codecs within range
media: sharp: fix sharp encoding
media: lirc: drop trailing space from scancode transmit
i2c: i801: fix potential race in i801_block_transaction_byte_by_byte
net: dsa: lan9303: consequently nested-lock physical MDIO
tty: serial: meson: fix hard LOCKUP on crtscts mode
serial: meson: Use platform_get_irq() to get the interrupt
tty: serial: meson: retrieve port FIFO size from DT
serial: meson: remove redundant initialization of variable id
tty: serial: meson: if no alias specified use an available id
ALSA: hda/realtek - Enable internal speaker of ASUS K6500ZC
ALSA: info: Fix potential deadlock at disconnection
parisc/pgtable: Do not drop upper 5 address bits of physical address
parisc: Prevent booting 64-bit kernels on PA1.x machines
dmaengine: stm32-mdma: correct desc prep when channel running
mcb: fix error handling for different scenarios when parsing
quota: explicitly forbid quota files from being encrypted
jbd2: fix potential data lost in recovering journal raced with synchronizing fs bdev
PM: hibernate: Clean up sync_read handling in snapshot_write_next()
PM: hibernate: Use __get_safe_page() rather than touching the list
mmc: vub300: fix an error code
clk: qcom: ipq8074: drop the CLK_SET_RATE_PARENT flag from PLL clocks
parisc/pdc: Add width field to struct pdc_model
PCI: keystone: Don't discard .probe() callback
PCI: keystone: Don't discard .remove() callback
genirq/generic_chip: Make irq_remove_generic_chip() irqdomain aware
mmc: meson-gx: Remove setting of CMD_CFG_ERROR
PCI/sysfs: Protect driver's D3cold preference from user space
hvc/xen: fix error path in xen_hvc_init() to always register frontend driver
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
audit: don't take task_lock() in audit_exe_compare() code path
KVM: x86: Ignore MSR_AMD64_TW_CFG access
randstruct: Fix gcc-plugin performance mode to stay in group
media: venus: hfi: add checks to perform sanity on queue pointers
cifs: spnego: add ';' in HOST_KEY_LEN
macvlan: Don't propagate promisc change to lower dev in passthru
net: ethernet: cortina: Fix MTU max setting
net: ethernet: cortina: Handle large frames
net: ethernet: cortina: Fix max RX frame define
ptp: annotate data-race around q->head and q->tail
xen/events: fix delayed eoi list handling
ppp: limit MRU to 64K
tipc: Fix kernel-infoleak due to uninitialized TLV value
tty: Fix uninit-value access in ppp_sync_receive()
ipvlan: add ipvlan_route_v6_outbound() helper
NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
pwm: Fix double shift bug
drm/amd/display: Avoid NULL dereference of timing generator
gfs2: ignore negated quota changes
media: vivid: avoid integer overflow
media: gspca: cpia1: shift-out-of-bounds in set_flicker
i2c: sun6i-p2wi: Prevent potential division by zero
usb: gadget: f_ncm: Always set current gadget in ncm_bind()
tty: vcc: Add check for kstrdup() in vcc_probe()
HID: Add quirk for Dell Pro Wireless Keyboard and Mouse KM5221W
scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup()
atm: iphase: Do PCI error checks on own line
ALSA: hda: Fix possible null-ptr-deref when assigning a stream
ARM: 9320/1: fix stack depot IRQ stack filter
jfs: fix array-index-out-of-bounds in diAlloc
jfs: fix array-index-out-of-bounds in dbFindLeaf
fs/jfs: Add validity check for db_maxag and db_agpref
fs/jfs: Add check for negative db_l2nbperpage
RDMA/hfi1: Use FIELD_GET() to extract Link Width
crypto: pcrypt - Fix hungtask for PADATA_RESET
selftests/efivarfs: create-read: fix a resource leak
drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL
drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga
drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7
platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e
Bluetooth: Fix double free in hci_conn_cleanup
net: annotate data-races around sk->sk_dst_pending_confirm
net: annotate data-races around sk->sk_tx_queue_mapping
wifi: ath10k: fix clang-specific fortify warning
wifi: ath9k: fix clang-specific fortify warnings
wifi: mac80211: don't return unset power in ieee80211_get_tx_power()
x86/mm: Drop the 4 MB restriction on minimal NUMA node memory size
clocksource/drivers/timer-atmel-tcb: Fix initialization on SAM9 hardware
clocksource/drivers/timer-imx-gpt: Fix potential memory leak
perf/core: Bail out early if the request AUX area is out of bound
locking/ww_mutex/test: Fix potential workqueue corruption
Revert "ipvlan: properly track tx_errors"
ANDROID: fix up platform_device ABI break
Linux 4.19.299
btrfs: use u64 for buffer sizes in the tree search ioctls
Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
fbdev: fsl-diu-fb: mark wr_reg_wa() static
fbdev: imsttfb: fix a resource leak in probe
fbdev: imsttfb: Fix error path of imsttfb_probe()
netfilter: xt_recent: fix (increase) ipv6 literal buffer length
r8169: respect userspace disabling IFF_MULTICAST
tg3: power down device only on SYSTEM_POWER_OFF
net/smc: fix dangling sock under state SMC_APPFINCLOSEWAIT
net/smc: wait for pending work before clcsock release_sock
net/smc: postpone release of clcsock
net: r8169: Disable multicast filter for RTL8168H and RTL8107E
r8169: improve rtl_set_rx_mode
dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.
dccp: Call security_inet_conn_request() after setting IPv4 addresses.
tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING
llc: verify mac len before reading mac header
Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()
pwm: brcmstb: Utilize appropriate clock APIs in suspend/resume
pwm: sti: Reduce number of allocations and drop usage of chip_data
pwm: sti: Avoid conditional gotos
media: dvb-usb-v2: af9035: fix missing unlock
media: s3c-camif: Avoid inappropriate kfree()
media: bttv: fix use after free error due to btv->timeout timer
pcmcia: ds: fix possible name leak in error path in pcmcia_device_add()
pcmcia: ds: fix refcount leak in pcmcia_device_add()
pcmcia: cs: fix possible hung task and memory leak pccardd()
f2fs: fix to initialize map.m_pblk in f2fs_precache_extents()
dmaengine: pxa_dma: Remove an erroneous BUG_ON() in pxad_free_desc()
USB: usbip: fix stub_dev hub disconnect
tools: iio: iio_generic_buffer ensure alignment
tools: iio: iio_generic_buffer: Fix some integer type and calculation
tools: iio: privatize globals and functions in iio_generic_buffer.c file
misc: st_core: Do not call kfree_skb() under spin_lock_irqsave()
dmaengine: ti: edma: handle irq_of_parse_and_map() errors
usb: dwc2: fix possible NULL pointer dereference caused by driver concurrency
tty: tty_jobctrl: fix pid memleak in disassociate_ctty()
leds: trigger: ledtrig-cpu:: Fix 'output may be truncated' issue for 'cpu'
ledtrig-cpu: Limit to 8 CPUs
leds: pwm: Don't disable the PWM when the LED should be off
leds: pwm: convert to atomic PWM API
leds: pwm: simplify if condition
mfd: dln2: Fix double put in dln2_probe
ASoC: ams-delta.c: use component after check
ASoC: Intel: Skylake: Fix mem leak when parsing UUIDs fails
sh: bios: Revive earlyprintk support
RDMA/hfi1: Workaround truncation compilation error
ext4: move 'ix' sanity check to corrent position
ARM: 9321/1: memset: cast the constant byte to unsigned char
hid: cp2112: Fix duplicate workqueue initialization
HID: cp2112: Use irqchip template
nd_btt: Make BTT lanes preemptible
sched/rt: Provide migrate_disable/enable() inlines
hwrng: geode - fix accessing registers
clk: scmi: Free scmi_clk allocated when the clocks with invalid info are skipped
firmware: ti_sci: Mark driver as non removable
ARM: dts: qcom: mdm9615: populate vsdcc fixed regulator
drm/rockchip: cdn-dp: Fix some error handling paths in cdn_dp_probe()
drm/radeon: possible buffer overflow
drm/rockchip: vop: Fix reset of state in duplicate state crtc funcs
hwmon: (coretemp) Fix potentially truncated sysfs attribute name
platform/x86: wmi: Fix opening of char device
platform/x86: wmi: remove unnecessary initializations
platform/x86: wmi: Fix probe failure when failing to register WMI devices
clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
clk: npcm7xx: Fix incorrect kfree
clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
clk: qcom: clk-rcg2: Fix clock rate overflow for high parent frequencies
regmap: debugfs: Fix a erroneous check after snprintf()
ipvlan: properly track tx_errors
net: add DEV_STATS_READ() helper
macsec: use DEV_STATS_INC()
macsec: Fix traffic counters/statistics
ipv6: avoid atomic fragment on GSO packets
ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias()
chtls: fix tp->rcv_tstamp initialization
thermal: core: prevent potential string overflow
can: dev: can_restart(): fix race condition between controller restart and netif_carrier_on()
can: dev: can_restart(): don't crash kernel if carrier is OK
can: dev: move driver related infrastructure into separate subdir
wifi: rtlwifi: fix EDCA limit set by BT coexistence
tcp_metrics: do not create an entry from tcp_init_metrics()
tcp_metrics: properly set tp->snd_ssthresh in tcp_init_metrics()
tcp_metrics: add missing barriers on delete
i40e: fix potential memory leaks in i40e_remove()
genirq/matrix: Exclude managed interrupts in irq_matrix_allocated()
vfs: fix readahead(2) on block devices
Linux 4.19.298
tty: 8250: Add support for Intashield IS-100
tty: 8250: Add support for Brainboxes UP cards
tty: 8250: Add support for additional Brainboxes UC cards
tty: 8250: Remove UC-257 and UC-431
usb: storage: set 1.50 as the lower bcdDevice for older "Super Top" compatibility
PCI: Prevent xHCI driver from claiming AMD VanGogh USB3 DRD device
remove the sx8 block driver
ata: ahci: fix enum constants for gcc-13
net: chelsio: cxgb4: add an error code check in t4_load_phy_fw
platform/x86: asus-wmi: Change ASUS_WMI_BRN_DOWN code from 0x20 to 0x2e
scsi: mpt3sas: Fix in error path
fbdev: uvesafb: Call cn_del_callback() at the end of uvesafb_exit()
ASoC: rt5650: fix the wrong result of key button
netfilter: nfnetlink_log: silence bogus compiler warning
fbdev: atyfb: only use ioremap_uc() on i386 and ia64
Input: synaptics-rmi4 - handle reset delay when using SMBus trsnsport
dmaengine: ste_dma40: Fix PM disable depth imbalance in d40_probe
irqchip/stm32-exti: add missing DT IRQ flag translation
Input: i8042 - add Fujitsu Lifebook E5411 to i8042 quirk table
ASoC: simple-card: fixup asoc_simple_probe() error handling
MAINTAINERS: r8169: Update path to the driver
x86: Fix .brk attribute in linker script
rpmsg: Fix possible refcount leak in rpmsg_register_device_override()
rpmsg: glink: Release driver_override
rpmsg: Fix calling device_lock() on non-initialized device
rpmsg: Fix kfree() of static memory on setting driver_override
rpmsg: Constify local variable in field store macro
driver: platform: Add helper for safer setting of driver_override
x86/mm: Fix RESERVE_BRK() for older binutils
x86/mm: Simplify RESERVE_BRK()
nfsd: lock_rename() needs both directories to live on the same fs
f2fs: fix to do sanity check on inode type during garbage collection
smbdirect: missing rc checks while waiting for rdma events
kobject: Fix slab-out-of-bounds in fill_kobj_path()
arm64: fix a concurrency issue in emulation_proc_handler()
drm/dp_mst: Fix NULL deref in get_mst_branch_device_by_guid_helper()
ARM: 8933/1: replace Sun/Solaris style flag on section directive
NFS: Don't call generic_error_remove_page() while holding locks
x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility
iio: exynos-adc: request second interupt only when touchscreen mode is used
perf/core: Fix potential NULL deref
nvmem: imx: correct nregs for i.MX6UL
nvmem: imx: correct nregs for i.MX6SLL
i2c: stm32f7: Fix PEC handling in case of SMBUS transfers
i2c: muxes: i2c-demux-pinctrl: Use of_get_i2c_adapter_by_node()
i2c: muxes: i2c-mux-gpmux: Use of_get_i2c_adapter_by_node()
i2c: muxes: i2c-mux-pinctrl: Use of_get_i2c_adapter_by_node()
i40e: Fix wrong check for I40E_TXR_FLAGS_WB_ON_ITR
gtp: fix fragmentation needed check with gso
igb: Fix potential memory leak in igb_add_ethtool_nfc_entry
treewide: Spelling fix in comment
r8169: fix the KCSAN reported data race in rtl_rx while reading desc->opts1
r8169: fix the KCSAN reported data-race in rtl_tx while reading TxDescArray[entry].opts1
r8169: rename r8169.c to r8169_main.c
virtio-mmio: fix memory leak of vm_dev
virtio_balloon: Fix endless deflation and inflation on arm64
mcb-lpc: Reallocate memory region to avoid memory overlapping
mcb: Return actual parsed size when reading chameleon table
selftests/ftrace: Add new test case which checks non unique symbol
mmc: core: sdio: hold retuning if sdio in 1-bit mode
mmc: sdio: Don't re-initialize powered-on removable SDIO cards at resume
Conflicts:
drivers/clk/qcom/clk-rcg2.c
drivers/leds/leds-pwm.c
drivers/mmc/core/sdio.c
drivers/rpmsg/qcom_glink_native.c
drivers/thermal/thermal_core.c
drivers/usb/gadget/function/f_ncm.c
Change-Id: I230a2c820e39dd863a874bfc0c7a411896b0ba9c
Changes in 4.19.300
locking/ww_mutex/test: Fix potential workqueue corruption
perf/core: Bail out early if the request AUX area is out of bound
clocksource/drivers/timer-imx-gpt: Fix potential memory leak
clocksource/drivers/timer-atmel-tcb: Fix initialization on SAM9 hardware
x86/mm: Drop the 4 MB restriction on minimal NUMA node memory size
wifi: mac80211: don't return unset power in ieee80211_get_tx_power()
wifi: ath9k: fix clang-specific fortify warnings
wifi: ath10k: fix clang-specific fortify warning
net: annotate data-races around sk->sk_tx_queue_mapping
net: annotate data-races around sk->sk_dst_pending_confirm
Bluetooth: Fix double free in hci_conn_cleanup
platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e
drm/amd: Fix UBSAN array-index-out-of-bounds for SMU7
drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga
drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL
selftests/efivarfs: create-read: fix a resource leak
crypto: pcrypt - Fix hungtask for PADATA_RESET
RDMA/hfi1: Use FIELD_GET() to extract Link Width
fs/jfs: Add check for negative db_l2nbperpage
fs/jfs: Add validity check for db_maxag and db_agpref
jfs: fix array-index-out-of-bounds in dbFindLeaf
jfs: fix array-index-out-of-bounds in diAlloc
ARM: 9320/1: fix stack depot IRQ stack filter
ALSA: hda: Fix possible null-ptr-deref when assigning a stream
atm: iphase: Do PCI error checks on own line
scsi: libfc: Fix potential NULL pointer dereference in fc_lport_ptp_setup()
HID: Add quirk for Dell Pro Wireless Keyboard and Mouse KM5221W
tty: vcc: Add check for kstrdup() in vcc_probe()
usb: gadget: f_ncm: Always set current gadget in ncm_bind()
i2c: sun6i-p2wi: Prevent potential division by zero
media: gspca: cpia1: shift-out-of-bounds in set_flicker
media: vivid: avoid integer overflow
gfs2: ignore negated quota changes
drm/amd/display: Avoid NULL dereference of timing generator
pwm: Fix double shift bug
NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
ipvlan: add ipvlan_route_v6_outbound() helper
tty: Fix uninit-value access in ppp_sync_receive()
tipc: Fix kernel-infoleak due to uninitialized TLV value
ppp: limit MRU to 64K
xen/events: fix delayed eoi list handling
ptp: annotate data-race around q->head and q->tail
net: ethernet: cortina: Fix max RX frame define
net: ethernet: cortina: Handle large frames
net: ethernet: cortina: Fix MTU max setting
macvlan: Don't propagate promisc change to lower dev in passthru
cifs: spnego: add ';' in HOST_KEY_LEN
media: venus: hfi: add checks to perform sanity on queue pointers
randstruct: Fix gcc-plugin performance mode to stay in group
KVM: x86: Ignore MSR_AMD64_TW_CFG access
audit: don't take task_lock() in audit_exe_compare() code path
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
hvc/xen: fix error path in xen_hvc_init() to always register frontend driver
PCI/sysfs: Protect driver's D3cold preference from user space
mmc: meson-gx: Remove setting of CMD_CFG_ERROR
genirq/generic_chip: Make irq_remove_generic_chip() irqdomain aware
PCI: keystone: Don't discard .remove() callback
PCI: keystone: Don't discard .probe() callback
parisc/pdc: Add width field to struct pdc_model
clk: qcom: ipq8074: drop the CLK_SET_RATE_PARENT flag from PLL clocks
mmc: vub300: fix an error code
PM: hibernate: Use __get_safe_page() rather than touching the list
PM: hibernate: Clean up sync_read handling in snapshot_write_next()
jbd2: fix potential data lost in recovering journal raced with synchronizing fs bdev
quota: explicitly forbid quota files from being encrypted
mcb: fix error handling for different scenarios when parsing
dmaengine: stm32-mdma: correct desc prep when channel running
parisc: Prevent booting 64-bit kernels on PA1.x machines
parisc/pgtable: Do not drop upper 5 address bits of physical address
ALSA: info: Fix potential deadlock at disconnection
ALSA: hda/realtek - Enable internal speaker of ASUS K6500ZC
tty: serial: meson: if no alias specified use an available id
serial: meson: remove redundant initialization of variable id
tty: serial: meson: retrieve port FIFO size from DT
serial: meson: Use platform_get_irq() to get the interrupt
tty: serial: meson: fix hard LOCKUP on crtscts mode
net: dsa: lan9303: consequently nested-lock physical MDIO
i2c: i801: fix potential race in i801_block_transaction_byte_by_byte
media: lirc: drop trailing space from scancode transmit
media: sharp: fix sharp encoding
media: venus: hfi_parser: Add check to keep the number of codecs within range
media: venus: hfi: fix the check to handle session buffer requirement
media: venus: hfi: add checks to handle capabilities from firmware
Revert "net: r8169: Disable multicast filter for RTL8168H and RTL8107E"
ext4: apply umask if ACL support is disabled
ext4: correct offset of gdb backup in non meta_bg group to update_backups
ext4: correct return value of ext4_convert_meta_bg
ext4: remove gdb backup copy for meta bg in setup_new_flex_group_blocks
drm/amdgpu: fix error handling in amdgpu_bo_list_get()
scsi: virtio_scsi: limit number of hw queues by nr_cpu_ids
iomap: Set all uptodate bits for an Uptodate page
net: sched: fix race condition in qdisc_graft()
Linux 4.19.300
Change-Id: I21f68d5f5dc85afe62bbc6e9a7aac12faee56621
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
[ Upstream commit d27abbfd4888d79dd24baf50e774631046ac4732 ]
These enums are passed to set/test_bit(). The set/test_bit() functions
take a bit number instead of a shifted value. Passing a shifted value
is a double shift bug like doing BIT(BIT(1)). The double shift bug
doesn't cause a problem here because we are only checking 0 and 1 but
if the value was 5 or above then it can lead to a buffer overflow.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Currently, PWM core driver provides interfaces for configuring PWM
period and duty length in nanoseconds with an integer data type, so
the max period can be only set to ~2.147 seconds. Add interfaces which
can set PWM period and duty with u64 data type to remove this
limitation.
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Bug: 152542675
Test: build and boot
(cherry picked from commit a691c36aef)
[surenb: removed sysfs API changes, replaced 32-bit divisions with 64-bit
ones in the following drivers to fix allmodconfig build:
drivers/clk/clk-pwm.c
drivers/hwmon/pwm-fan.c
drivers/pwm/pwm-clps711x.c
drivers/pwm/pwm-sti.c
drivers/pwm/pwm-sun4i.c
]
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I149c14b2d59b181344e7bb77393c64bcd9998de5
Merged-In: I149c14b2d59b181344e7bb77393c64bcd9998de5
Normally, PWM channel has fixed output until software request to change
its settings. There are some PWM devices which their outputs could be
changed autonomously according to a predefined pattern programmed in
hardware. Add pwm_output_type enum type to identify these two different
PWM types and add relevant helper functions to set and get PWM output
types and pattern.
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Bug: 152542675
Test: build and boot
(cherry picked from commit 9e880ec791)
[surenb: removed sysfs changes and fixed checkpatch.pl error in
pwm_get_output_type_supported function from pwm.h]
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I4a457636547e3225d8f10cfb3237765f500d9cc7
Merged-In: I4a457636547e3225d8f10cfb3237765f500d9cc7
* refs/heads/tmp-d1f7f3b:
Linux 4.19.51
ALSA: seq: Cover unsubscribe_port() in list_mutex
drm/vc4: fix fb references in async update
ovl: support stacked SEEK_HOLE/SEEK_DATA
ovl: check the capability before cred overridden
Revert "drm/nouveau: add kconfig option to turn off nouveau legacy contexts. (v3)"
Revert "Bluetooth: Align minimum encryption key size for LE and BR/EDR connections"
percpu: do not search past bitmap when allocating an area
gpio: vf610: Do not share irq_chip
soc: renesas: Identify R-Car M3-W ES1.3
usb: typec: fusb302: Check vconn is off when we start toggling
ARM: exynos: Fix undefined instruction during Exynos5422 resume
pwm: Fix deadlock warning when removing PWM device
ARM: dts: exynos: Always enable necessary APIO_1V8 and ABB_1V8 regulators on Arndale Octa
pwm: tiehrpwm: Update shadow register for disabling PWMs
dmaengine: idma64: Use actual device for DMA transfers
ice: Add missing case in print_link_msg for printing flow control
gpio: gpio-omap: add check for off wake capable gpios
PCI: xilinx: Check for __get_free_pages() failure
block, bfq: increase idling for weight-raised queues
video: imsttfb: fix potential NULL pointer dereferences
video: hgafb: fix potential NULL pointer dereference
scsi: qla2xxx: Reset the FCF_ASYNC_{SENT|ACTIVE} flags
PCI: rcar: Fix 64bit MSI message address handling
PCI: rcar: Fix a potential NULL pointer dereference
net: hns3: return 0 and print warning when hit duplicate MAC
power: supply: max14656: fix potential use-before-alloc
platform/x86: intel_pmc_ipc: adding error handling
ARM: OMAP2+: pm33xx-core: Do not Turn OFF CEFUSE as PPA may be using it
drm/amd/display: Use plane->color_space for dpp if specified
PCI: rpadlpar: Fix leaked device_node references in add/remove paths
ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA
ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ipg" clock to SDMA
ARM: dts: imx6ul: Specify IMX6UL_CLK_IPG as "ipg" clock to SDMA
ARM: dts: imx7d: Specify IMX7D_CLK_IPG as "ipg" clock to SDMA
ARM: dts: imx6sll: Specify IMX6SLL_CLK_IPG as "ipg" clock to SDMA
ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ahb" clock to SDMA
ARM: dts: imx53: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
ARM: dts: imx50: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
ARM: dts: imx51: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
soc: rockchip: Set the proper PWM for rk3288
clk: rockchip: Turn on "aclk_dmac1" for suspend on rk3288
soc: mediatek: pwrap: Zero initialize rdata in pwrap_init_cipher
PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64
platform/chrome: cros_ec_proto: check for NULL transfer function
i40e: Queues are reserved despite "Invalid argument" error
x86/PCI: Fix PCI IRQ routing table memory leak
net: thunderbolt: Unregister ThunderboltIP protocol handler when suspending
switchtec: Fix unintended mask of MRPC event
iommu/arm-smmu-v3: Don't disable SMMU in kdump kernel
vfio: Fix WARNING "do not call blocking ops when !TASK_RUNNING"
nfsd: avoid uninitialized variable warning
nfsd: allow fh_want_write to be called twice
fuse: retrieve: cap requested size to negotiated max_write
nvmem: sunxi_sid: Support SID on A83T and H5
nvmem: core: fix read buffer in place
ALSA: hda - Register irq handler after the chip initialization
netfilter: nf_flow_table: fix netdev refcnt leak
netfilter: nf_flow_table: check ttl value in flow offload data path
nvme-pci: shutdown on timeout during deletion
nvme-pci: unquiesce admin queue on shutdown
PCI: designware-ep: Use aligned ATU window for raising MSI interrupts
misc: pci_endpoint_test: Fix test_reg_bar to be updated in pci_endpoint_test
iommu/vt-d: Set intel_iommu_gfx_mapped correctly
blk-mq: move cancel of requeue_work into blk_mq_release
watchdog: fix compile time error of pretimeout governors
watchdog: imx2_wdt: Fix set_timeout for big timeout values
netfilter: nf_tables: fix base chain stat rcu_dereference usage
mips: Make sure dt memory regions are valid
netfilter: nf_conntrack_h323: restore boundary check correctness
netfilter: nf_flow_table: fix missing error check for rhashtable_insert_fast
mmc: mmci: Prevent polling for busy detection in IRQ context
ovl: do not generate duplicate fsnotify events for "fake" path
PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi()
PCI: dwc: Free MSI in dw_pcie_host_init() error path
uml: fix a boot splat wrt use of cpu_all_mask
configfs: fix possible use-after-free in configfs_register_group
percpu: remove spurious lock dependency between percpu and sched
f2fs: fix to do checksum even if inode page is uptodate
f2fs: fix to do sanity check on valid block count of segment
f2fs: fix to use inline space only if inline_xattr is enable
f2fs: fix to avoid panic in dec_valid_block_count()
f2fs: fix to clear dirty inode in error path of f2fs_iget()
f2fs: fix to do sanity check on free nid
f2fs: fix to avoid panic in f2fs_remove_inode_page()
f2fs: fix to avoid panic in f2fs_inplace_write_data()
f2fs: fix to avoid panic in do_recover_data()
ntp: Allow TAI-UTC offset to be set to zero
mailbox: stm32-ipcc: check invalid irq
pwm: meson: Use the spin-lock only to protect register modifications
EDAC/mpc85xx: Prevent building as a module
bpf: fix undefined behavior in narrow load handling
drm/nouveau/kms/gv100-: fix spurious window immediate interlocks
objtool: Don't use ignore flag for fake jumps
drm/bridge: adv7511: Fix low refresh rate selection
drm/nouveau/kms/gf119-gp10x: push HeadSetControlOutputResource() mthd when encoders change
perf/x86/intel: Allow PEBS multi-entry in watermark mode
mfd: twl6040: Fix device init errors for ACCCTL register
drm/nouveau/disp/dp: respect sink limits when selecting failsafe link configuration
mfd: intel-lpss: Set the device in reset state when init
mfd: tps65912-spi: Add missing of table registration
drivers: thermal: tsens: Don't print error message on -EPROBE_DEFER
thermal: rcar_gen3_thermal: disable interrupt in .remove
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
mm/slab.c: fix an infinite loop in leaks_show()
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
mm: page_mkclean vs MADV_DONTNEED race
mm/cma.c: fix the bitmap status to show failed allocation reason
initramfs: free initrd memory if opening /initrd.image fails
mm/cma.c: fix crash on CMA allocation if bitmap allocation fails
mem-hotplug: fix node spanned pages when we have a node with only ZONE_MOVABLE
hugetlbfs: on restore reserve error path retain subpool reservation
mm/hmm: select mmu notifier when selecting HMM
ARM: prevent tracing IPI_CPU_BACKTRACE
drm/pl111: Initialize clock spinlock early
ipc: prevent lockup on alloc_msg and free_msg
sysctl: return -EINVAL if val violates minmax
fs/fat/file.c: issue flush after the writeback of FAT
rapidio: fix a NULL pointer dereference when create_workqueue() fails
x86: Fix RETPOLINE_CFLAGS check
BACKPORT: kheaders: Do not regenerate archive if config is not changed
BACKPORT: kheaders: Move from proc to sysfs
BACKPORT: Provide in-kernel headers to make extending kernel easier
UPSTREAM: binder: check for overflow when alloc for security context
Conflicts:
arch/arm/kernel/smp.c
Change-Id: I3ea68f5be5910b6ae24d16194db149c24c36da36
Signed-off-by: Ivaylo Georgiev <irgeorgiev@codeaurora.org>
Currently, PWM core driver provides interfaces for configuring PWM
period and duty length in nanoseconds with an integer data type, so
the max period can be only set to ~2.147 seconds. Add interfaces which
can set PWM period and duty with u64 data type to remove this
limitation.
Change-Id: Ic8722088510d447fc939ab6a5014711aef1b832f
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Normally, PWM channel has fixed output until software request to change
its settings. There are some PWM devices which their outputs could be
changed autonomously according to a predefined pattern programmed in
hardware. Add pwm_output_type enum type to identify these two different
PWM types and add relevant helper functions to set and get PWM output
types and pattern.
Change-Id: Ia1f914a45ab4f4dd7be037a395eeb89d0e65a80e
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a module name string to the pwm_lookup struct and if specified try
to load the module using request_module() if pwmchip_find_by_name() is
unable to find the PWM chip.
This is a last resort to work around drivers that can't - and can't be
made to - deal with deferred probe.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[thierry.reding@gmail.com: rename new macro, reword commit message]
[thierry.reding@gmail.com: add comment explaining use-case]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
All PWM devices have been marked as "might sleep" since v4.5, there is
no longer a need to differentiate on a per-chip basis.
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Exported pwm channels aren't removed before the pwmchip and are
leaked. This results in invalid sysfs files. This fix removes
all exported pwm channels before chip removal.
Signed-off-by: David Hsu <davidhsu@google.com>
Fixes: 76abbdde2d ("pwm: Add sysfs interface")
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The PWM framework expects PWM users to configure the duty cycle in nano-
seconds, but many users want to express the duty cycle relatively to the
period value (i.e. duty_cycle = 33% of the period).
Add the pwm_{get,set}_relative_duty_cycle() helpers to ease this kind of
conversion.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The pwm_init_state() helper prepares a new state object containing the
current PWM state except for the polarity and period fields which are
set to the reference values (those in struct pwm_args).
This is particularly useful for PWM users who want to apply a new duty-
cycle expressed relatively to the reference period without changing the
enable state.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Commit 5ec803edcb ("pwm: Add core infrastructure to allow atomic
updates"), implemented pwm_disable() as a wrapper around
pwm_apply_state(), and then, commit ef2bf4997f ("pwm: Improve args
checking in pwm_apply_state()") added missing checks on the ->period
value in pwm_apply_state() to ensure we were not passing inappropriate
values to the ->config() or ->apply() methods.
The conjunction of these 2 commits led to a case where pwm_disable()
was no longer succeeding, thus preventing the polarity setting done
in pwm_apply_args().
Set a valid period in pwm_apply_args() to ensure polarity setting
won't be rejected.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Suggested-by: Brian Norris <briannorris@chromium.org>
Fixes: 5ec803edcb ("pwm: Add core infrastructure to allow atomic updates")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Supply a PWM capture callback op in order to pass back information
obtained by running analysis on a PWM signal. This would normally (at
least during testing) be called from the sysfs routines with a view to
printing out PWM capture data which has been encoded into a string.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[thierry.reding@gmail.com: make capture data unsigned int for symmetry]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
It seems like in the process of refactoring pwm_config() to utilize the
newly-introduced pwm_apply_state() API, some args/bounds checking was
dropped.
In particular, I noted that we are now allowing invalid period
selections, e.g.:
# echo 1 > /sys/class/pwm/pwmchip0/export
# cat /sys/class/pwm/pwmchip0/pwm1/period
100
# echo 101 > /sys/class/pwm/pwmchip0/pwm1/duty_cycle
[... driver may or may not reject the value, or trigger some logic bug ...]
It's better to see:
# echo 1 > /sys/class/pwm/pwmchip0/export
# cat /sys/class/pwm/pwmchip0/pwm1/period
100
# echo 101 > /sys/class/pwm/pwmchip0/pwm1/duty_cycle
-bash: echo: write error: Invalid argument
This patch reintroduces some bounds checks in both pwm_config() (for its
signed parameters; we don't want to convert negative values into large
unsigned values) and in pwm_apply_state() (which fix the above described
behavior, as well as other potential API misuses).
Fixes: 5ec803edcb ("pwm: Add core infrastructure to allow atomic updates")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Add an ->apply() method to the pwm_ops struct to allow PWM drivers to
implement atomic updates. This method is preferred over the ->enable(),
->disable() and ->config() methods if available.
Add the pwm_apply_state() function to the PWM user API.
Note that the pwm_apply_state() does not guarantee the atomicity of the
update operation, it all depends on the availability and implementation
of the ->apply() method.
pwm_enable/disable/set_polarity/config() are now implemented as wrappers
around the pwm_apply_state() function.
pwm_adjust_config() is allowing smooth handover between the bootloader
and the kernel. This function tries to adapt the current PWM state to
the PWM arguments coming from a PWM lookup table or a DT definition
without changing the duty_cycle/period proportion.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[thierry.reding@gmail.com: fix a couple of typos]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Add a ->get_state() function to the pwm_ops struct to let PWM drivers
initialize the PWM state attached to a PWM device.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Prepare the transition to PWM atomic update by moving the enabled and
disabled state into the pwm_state struct. This way we can easily update
the whole PWM state by copying the new state in the ->state field.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The PWM state, represented by its period, duty_cycle and polarity is
currently directly stored in the PWM device. Declare a pwm_state
structure embedding those field so that we can later use this struct
to atomically update all the PWM parameters at once.
All pwm_get_xxx() helpers are now implemented as wrappers around
pwm_get_state().
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Before the introduction of pwm_args, the core was resetting the PWM
period and polarity states to the reference values (those provided
through the DT, a PWM lookup table or hardcoded in the driver).
Now that all PWM users are correctly using pwm_args to configure their
PWM device, we can safely remove the pwm_apply_args() call in pwm_get()
and of_pwm_get().
We can also get rid of the pwm_set_period() call in pwm_apply_args(),
because PWM users are now directly using pargs->period instead of
pwm_get_period(). By doing that we avoid messing with the current PWM
period.
The only remaining bit in pwm_apply_args() is the initial polarity
setting, and it should go away when all PWM users have been patched to
use the atomic API (with this API the polarity will be set along with
other PWM arguments when configuring the PWM).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
PWM devices are not protected against concurrent accesses. The lock in
struct pwm_device might let PWM users think it is, but it's actually
only protecting the enabled state.
Removing this lock should be fine as long as all PWM users are aware
that accesses to the PWM device have to be serialized, which seems to be
the case for all of them except the sysfs interface. Patch the sysfs
code by adding a lock to the pwm_export struct and making sure it's
taken for all relevant accesses to the exported PWM device.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Currently the PWM core mixes the current PWM state with the per-platform
reference config (specified through the PWM lookup table, DT definition
or directly hardcoded in PWM drivers).
Create a struct pwm_args to store this reference configuration, so that
PWM users can differentiate between the current and reference
configurations.
Patch all places where pwm->args should be initialized. We keep the
pwm_set_polarity/period() calls until all PWM users are patched to use
pwm_args instead of pwm_get_period/polarity().
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[thierry.reding@gmail.com: reword kerneldoc comments]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The pwm_enable() function didn't clear the enabled bit if a call to the
driver's ->enable() callback returned an error. The result was that the
state of the PWM core was wrong. Clearing the bit when enable returns
an error ensures the state is properly set.
Tested-by: Jonathan Richardson <jonathar@broadcom.com>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jonathan Richardson <jonathar@broadcom.com>
[thierry.reding@gmail.com: add missing kerneldoc for the lock]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Some drivers are directly accessing the ->polarity field in pwm_device.
Add a helper to retrieve the current polarity so that we can easily move
this field elsewhere (required to support atomic update).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
The PWM argument is not modified in PWM property accessors, make it a
const argument so that the accessors can be used from sysfs.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Some PWM drivers are testing the PWMF_ENABLED flag. Create a helper
function to hide the logic behind enabled test. This will allow us to
smoothly move from the current approach to an atomic PWM update
approach.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Add a new function to register a PWM chip with channels that have their
initial polarity as specified by an additional parameter. This benefits
drivers of controllers that by default operate with inversed polarity
by removing the need to modify the polarity during initialization.
Signed-off-by: Tim Kryger <tim.kryger@gmail.com>
Signed-off-by: Jonathan Richardson <jonathar@broadcom.com>
[thierry.reding@gmail.com: export pwmchip_add_with_polarity()]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Add period and polarity members to struct pwm_lookup so that platforms
using the lookup table can be treated the same way as those using the
device tree.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Add a simple sysfs interface to the generic PWM framework.
/sys/class/pwm/
`-- pwmchipN/ for each PWM chip
|-- export (w/o) ask the kernel to export a PWM channel
|-- npwm (r/o) number of PWM channels in this PWM chip
|-- pwmX/ for each exported PWM channel
| |-- duty_cycle (r/w) duty cycle (in nanoseconds)
| |-- enable (r/w) enable/disable PWM
| |-- period (r/w) period (in nanoseconds)
| `-- polarity (r/w) polarity of PWM (normal/inversed)
`-- unexport (w/o) return a PWM channel to the kernel
Based on work by Lars Poeschel.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Lars Poeschel <poeschel@lemonage.de>
Cc: Ryan Mallon <rmallon@gmail.com>
Cc: Rob Landley <rob@landley.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Pull PWM changes from Thierry Reding:
"A new driver has been added to support the PWM mode of the timer
counter blocks found on Atmel AT91 SoCs. The VT8500 driver now
supports changing the PWM signal polarity and the TI drivers (EHRPWM
and ECAP) gained suspend and resume functionality.
User drivers can now query the core for whether access to a PWM device
will sleep (if the PWM chip is on a slow bus such as I2C or SPI).
The pwm-backlight driver now handles the backlight BL_CORE_FBBLANK
state in addition to the FB layer's blanking states.
To round things off, a few fixes and cleanups are also included"
* tag 'for-3.9-rc1' of git://gitorious.org/linux-pwm/linux-pwm:
pwm: twl: Use to_twl() instead of container_of()
pwm: tegra: assume CONFIG_OF
pwm_backlight: Validate dft_brightness in main probe function
pwm: Export pwm_{set,get}_chip_data()
pwm: Make Kconfig entries more consistent
pwm: Add can_sleep property to drivers
pwm: Add pwm_can_sleep() as exported API to users
pwm-backlight: handle BL_CORE_FBBLANK state
pwm: pwm-tiecap: Low power sleep support
pwm: pwm-tiehrpwm: Low power sleep support
pwm: pwm-tiehrpwm: Update the clock handling of pwm-tiehrpwm driver
pwm: vt8500: Add polarity support
pwm: vt8500: Register write busy test performed incorrectly
pwm: atmel: add Timer Counter Block PWM driver
Allow client driver to use of_pwm_get() to get the PWM they need. This
is needed for drivers which handle more than one PWM separately, like
leds-pwm driver, which have:
pwmleds {
compatible = "pwm-leds";
kpad {
label = "omap4::keypad";
pwms = <&twl_pwm 0 7812500>;
max-brightness = <127>;
};
charging {
label = "omap4:green:chrg";
pwms = <&twl_pwmled 0 7812500>;
max-brightness = <255>;
};
};
in the dts files.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
To synchronize the header file definition and the actual code. In the code
the consumer parameter is named as con_id, change the header file and replace
consumer -> con_id in the parameter list.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Ackedy-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Add support for encoding PWM properties in bit encoded form with
of_pwm_xlate_with_flags() function support. Platforms require platform
specific PWM properties has to populate in 3rd cell of the pwm-specifier
and PWM driver should also set .of_xlate support with this function.
Currently PWM property polarity encoded in bit position 0 of the third
cell in pwm-specifier.
Signed-off-by: Philip, Avinash <avinashphilip@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Add resource managed variants of pwm_get() and pwm_put() for
convenience. Code is largely inspired by the equivalent devm functions
of the regulator framework.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Some hardware supports inverting the polarity of the PWM signal. This
commit adds support to the PWM framework to allow users of the PWM API
to configure the polarity. Note that in order to reduce complexity,
changing the polarity of a PWM signal is only allowed while the PWM is
disabled.
A practical example where this can prove useful is to simulate inversion
of the duty cycle. While inversion of polarity and duty cycle are not
exactly the same, the differences for most use-cases are negligible.
Signed-off-by: Philip, Avinash <avinashphilip@ti.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
