kernel/linux.git/drivers/leds/flash, branch v6.6.132

leds: flash: leds-qcom-flash: Update torch current clamp setting

2025-10-15T09:57:50+00:00

[ Upstream commit 5974e8f6c3e47ab097c3dd8ece7324d1f88fe739 ] There is a register to clamp the flash current per LED channel when safety timer is disabled. It needs to be updated according to the maximum torch LED current setting to ensure the torch current won't be clamped unexpectedly. Fixes: 96a2e242a5dc ("leds: flash: Add driver to support flash LED module in QCOM PMICs") Signed-off-by: Fenglin Wu Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20250729-fix-torch-clamp-issue-v2-1-9b83816437a3@oss.qualcomm.com Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

leds: flash: leds-qcom-flash: Fix registry access after re-bind

2025-08-28T14:28:40+00:00

[ Upstream commit fab15f57360b1e6620a1d0d6b0fbee896e6c1f07 ] Driver in probe() updates each of 'reg_field' with 'reg_base': for (i = 0; i < REG_MAX_COUNT; i++) regs[i].reg += reg_base; 'reg_field' array (under variable 'regs' above) is statically allocated, thus each re-bind would add another 'reg_base' leading to bogus register addresses. Constify the local 'reg_field' array and duplicate it in probe to solve this. Fixes: 96a2e242a5dc ("leds: flash: Add driver to support flash LED module in QCOM PMICs") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski Reviewed-by: Fenglin Wu Link: https://lore.kernel.org/r/20250529063335.8785-2-krzysztof.kozlowski@linaro.org Signed-off-by: Lee Jones Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

leds: flash: leds-qcom-flash: Limit LED current based on thermal condition

2025-08-28T14:28:40+00:00

[ Upstream commit a0864cf32044233e56247fa0eed3ac660f15db9e ] The flash module has status bits to indicate different thermal conditions which are called as OTSTx. For each OTSTx status, there is a recommended total flash current for all channels to prevent the flash module entering into higher thermal level. For example, the total flash current should be limited to 1000mA/500mA respectively when the HW reaches the OTST1/OTST2 thermal level. Signed-off-by: Fenglin Wu Link: https://lore.kernel.org/r/20240705-qcom_flash_thermal_derating-v3-1-8e2e2783e3a6@quicinc.com Signed-off-by: Lee Jones Stable-dep-of: fab15f57360b ("leds: flash: leds-qcom-flash: Fix registry access after re-bind") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

leds: flash: mt6360: Fix device_for_each_child_node() refcounting in error paths

2024-12-09T09:33:08+00:00

commit 73b03b27736e440e3009fe1319cbc82d2cd1290c upstream. The device_for_each_child_node() macro requires explicit calls to fwnode_handle_put() upon early exits to avoid memory leaks, and in this case the error paths are handled after jumping to 'out_flash_realease', which misses that required call to to decrement the refcount of the child node. A more elegant and robust solution is using the scoped variant of the loop, which automatically handles such early exits. Fix the child node refcounting in the error paths by using device_for_each_child_node_scoped(). Cc: stable@vger.kernel.org Fixes: 679f8652064b ("leds: Add mt6360 driver") Signed-off-by: Javier Carrasco Link: https://lore.kernel.org/r/20240927-leds_device_for_each_child_node_scoped-v1-1-95c0614b38c8@gmail.com Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

leds: mt6360: Fix memory leak in mt6360_init_isnk_properties()

2024-08-03T06:54:18+00:00

commit e41d574b359ccd8d99be65c6f11502efa2b83136 upstream. The fwnode_for_each_child_node() loop requires manual intervention to decrement the child refcount in case of an early return. Add the missing calls to fwnode_handle_put(child) to avoid memory leaks in the error paths. Cc: stable@vger.kernel.org Fixes: 679f8652064b ("leds: Add mt6360 driver") Signed-off-by: Javier Carrasco Acked-by: Pavel Machek Link: https://lore.kernel.org/r/20240611-leds-mt6360-memleak-v1-1-93642eb5011e@gmail.com Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

leds: flash: leds-qcom-flash: Test the correct variable in init

2024-08-03T06:53:54+00:00

[ Upstream commit 87e552ad654554be73e62dd43c923bcee215287d ] This code was passing the incorrect pointer to PTR_ERR_OR_ZERO() so it always returned success. It should have been checking the array element instead of the array itself. Fixes: 96a2e242a5dc ("leds: flash: Add driver to support flash LED module in QCOM PMICs") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/ZoWJS_epjIMCYITg@stanley.mountain Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

leds: sgm3140: Add missing timer cleanup and flash gpio control

2024-03-26T22:19:55+00:00

[ Upstream commit 205c29887a333ee4b37596e6533373e38cb23947 ] Enabling strobe and then setting brightness to 0 causes the driver to enter invalid state after strobe end timer fires. We should cancel strobe mode resources when changing brightness (aka torch mode). Fixes: cef8ec8cbd21 ("leds: add sgm3140 driver") Signed-off-by: Ondrej Jirman Link: https://lore.kernel.org/r/20240217191133.1757553-1-megi@xff.cz Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

leds: flash: leds-qcom-flash: Put child node if registration failed

2023-07-28T11:17:40+00:00

Put the child node if register flash LED device failed. Signed-off-by: Fenglin Wu Link: https://lore.kernel.org/r/20230725-leds-qcom-flash-driver-tiny-fixes-v2-3-0f5cbce5fed0@quicinc.com Signed-off-by: Lee Jones

leds: flash: leds-qcom-flash: Turn off LED before setting flash current

2023-07-28T11:17:32+00:00

Strobe off the LED before setting flash current to avoid it's being enabled with an incorrect current if it has been working in torch mode. Signed-off-by: Fenglin Wu Link: https://lore.kernel.org/r/20230725-leds-qcom-flash-driver-tiny-fixes-v2-2-0f5cbce5fed0@quicinc.com Signed-off-by: Lee Jones

leds: flash: leds-qcom-flash: Declare the driver as a module

2023-07-28T11:17:23+00:00

Explain in Kconfig that the driver can be compiled as a module. Signed-off-by: Fenglin Wu Link: https://lore.kernel.org/r/20230725-leds-qcom-flash-driver-tiny-fixes-v2-1-0f5cbce5fed0@quicinc.com Signed-off-by: Lee Jones