kernel/git/stable/linux.git/drivers/video/backlight, branch linux-5.12.y

backlight: lm3630a: Fix return code of .update_status() callback

2021-07-20T14:02:12+00:00

[ Upstream commit b9481a667a90ec739995e85f91f3672ca44d6ffa ] According to .update_status() is supposed to return 0 on success and a negative error code otherwise. Adapt lm3630a_bank_a_update_status() and lm3630a_bank_b_update_status() to actually do it. While touching that also add the error code to the failure message. Signed-off-by: Uwe Kleine-König Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

backlight: lm3630a_bl: Put fwnode in error case during ->probe()

2021-07-14T15:00:13+00:00

[ Upstream commit 6d1c32dbedd7d7e7372aa38033ec8782c39f6379 ] device_for_each_child_node() bumps a reference counting of a returned variable. We have to balance it whenever we return to the caller. Cc: Brian Masney Cc: Dan Murphy Fixes: 8fbce8efe15cd ("backlight: lm3630a: Add firmware node support") Signed-off-by: Andy Shevchenko Reviewed-by: Brian Masney Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

backlight: qcom-wled: Fix FSC update issue for WLED5

2021-05-12T06:39:45+00:00

[ Upstream commit 4d6e9cdff7fbb6bef3e5559596fab3eeffaf95ca ] Currently, for WLED5, the FSC (Full scale current) setting is not updated properly due to driver toggling the wrong register after an FSC update. On WLED5 we should only toggle the MOD_SYNC bit after a brightness update. For an FSC update we need to toggle the SYNC bits instead. Fix it by adopting the common wled3_sync_toggle() for WLED5 and introducing new code to the brightness update path to compensate. Signed-off-by: Kiran Gunda Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

backlight: qcom-wled: Use sink_addr for sync toggle

2021-05-12T06:39:44+00:00

[ Upstream commit cdfd4c689e2a52c313b35ddfc1852ff274f91acb ] WLED3_SINK_REG_SYNC is, as the name implies, a sink register offset. Therefore, use the sink address as base instead of the ctrl address. This fixes the sync toggle on wled4, which can be observed by the fact that adjusting brightness now works. It has no effect on wled3 because sink and ctrl base addresses are the same. This allows adjusting the brightness without having to disable then reenable the module. Signed-off-by: Obeida Shamoun Signed-off-by: Konrad Dybcio Signed-off-by: Marijn Suijten Reviewed-by: Daniel Thompson Acked-by: Kiran Gunda Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

2021-02-22T22:27:07+00:00

Pull ARM updates from Russell King: - Generalise byte swapping assembly - Update debug addresses for STI - Validate start of physical memory with DTB - Do not clear SCTLR.nTLSMD in decompressor - amba/locomo/sa1111 devices remove method return type is void - address markers for KASAN in page table dump * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void amba: Make use of bus_type functions amba: Make the remove callback return void vfio: platform: simplify device removal amba: reorder functions amba: Fix resource leak for drivers without .remove ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions ARM: 9051/1: vdso: remove unneded extra-y addition ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible ARM: 9049/1: locomo: make locomo bus's remove callback return void ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void ARM: 9047/1: smp: remove unused variable ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB ARM: 9042/1: debug: no uncompress debugging while semihosting ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART ARM: 9039/1: assembler: generalize byte swapping macro into rev_l

backlight/video: Use Platform getter/setter functions

2021-02-12T10:01:45+00:00

Use getter and setter functions, for platform_device structures and a spi_device structure. Signed-off-by: Julia Lawall Acked-by: Daniel Vetter Signed-off-by: Lee Jones

backlight: ktd253: Bring up in a known state

2021-02-09T14:09:21+00:00

The KTD253 backlight might already be on when the driver is probed: then we don't really know what the current ratio is and all light intensity settings will be off relative to what it was at boot. To fix this, bring up the backlight OFF then move it to the default backlight from there so we know the state. Signed-off-by: Linus Walleij Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones

ARM: 9049/1: locomo: make locomo bus's remove callback return void

2021-02-01T19:44:30+00:00

The driver core ignores the return value of struct bus_type::remove because there is only little that can be done. To simplify the quest to make this function return void, let struct locomo_driver::remove return void, too. All users already unconditionally return 0, this commit makes it obvious that returning an error code is a bad idea and ensures future users behave accordingly. Link: https://lore.kernel.org/r/20201126110140.2021758-1-u.kleine-koenig@pengutronix.de Acked-by: Dmitry Torokhov Acked-by: Lee Jones Signed-off-by: Uwe Kleine-König Signed-off-by: Russell King

backlight: sky81452-backlight: Convert comma to semicolon

2021-01-20T12:54:14+00:00

Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones

backlight: lms283gf05: Convert to GPIO descriptors

2021-01-20T12:47:11+00:00

This converts the lms283gf05 backlight driver to use GPIO descriptors and switches the single PXA Palm Z2 device over to defining these. Since the platform data was only used to convey GPIO information we can delete the platform data header. Notice that we define the proper active low semantics in the board file GPIO descriptor table (active low) and assert the reset line by bringing it to "1" (asserted). Cc: Marek Vasut Cc: Haojian Zhuang Cc: Robert Jarzmik Signed-off-by: Linus Walleij Reviewed-by: Daniel Mack Acked-by: Mark Brown Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones