linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2018-06-26	spi: sprd: Change to use devm_hwspin_lock_request_specific()	Baolin Wang	1	-6/+3
	Change to use devm_hwspin_lock_request_specific() instead of freeing the hwlock explicitly when unbound the device. Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-06-26	spi: sprd: Replace of_hwspin_lock_get_id() with of_hwspin_lock_get_id_byname()	Baolin Wang	1	-1/+1
	Now the hwlock core has supplied new function to get a specific hwlock id by one hwlock name, which is more clear for users. So change to use of_hwspin_lock_get_id_byname(). Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-03-21	spi: sprd: Add the support of restarting the system	Baolin Wang	1	-0/+112
	On Spreadtrum platform, we use one PMIC watchdog to reset the whole system with loading one suitable timeout value (usually 50ms) for the watchdog. In theory, we should implement the restart function in drivers/power/reset subsystem to access the PMIC watchdog with regmap. When restart the system, other cores will be stopped by IPI, but if other cores were accessing PMIC with holding the regmap mutex lock, that will cause dead-lock issue if we try to access the PMIC watchdog with regmap to restart the whole system. Thus we can implement the restart function in ADI driver to avoid this issue. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-03-21	spi: sprd: Simplify the transfer function	Baolin Wang	1	-29/+35
	We can move the hardware spinlock protection into the ADI read/write functions to simplify the sprd_adi_transfer_one() function. Moreover this optimization can also help to access PMIC without considering the hardware spinlock using sprd_adi_read/write() functions. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-25	spi: sprd: Fix the possible negative value of BIT()	Baolin Wang	1	-1/+1
	When enabling the ADI hardware channels, if the channel id is 31, then we will get one negative value -1 for BIT() macro, which will write incorrect value to register. Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-10-13	spi: sprd-adi: fix platform_no_drv_owner.cocci warnings	Wu Fengguang	1	-1/+0
	drivers/spi/spi-sprd-adi.c:409:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform") Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-09-25	spi: sprd-adi: silence an uninitialized variable warning	Dan Carpenter	1	-1/+1
	If of_get_property() fails then "size" is uninitialized and it leads to a static checker warning: drivers/spi/spi-sprd-adi.c:288 sprd_adi_hw_init() error: uninitialized symbol 'size'. We can silence the warning by re-arranging the order of these checks. It obviously doesn't affect runtime at all. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-09-25	spi: sprd-adi: checking for NULL instead of IS_ERR()	Dan Carpenter	1	-2/+2
	devm_ioremap_resource() returns error pointers, it never returns NULL. Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-09-19	spi: Add ADI driver for Spreadtrum platform	Baolin Wang	1	-0/+419
	This patch adds ADI driver based on SPI framework for Spreadtrum SC9860 platform. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Mark Brown <broonie@kernel.org>