kernel.git/drivers/dma/edma.c, branch linux-4.4.y

dmaengine: edma: Add probe callback to edma_tptc_driver

2020-05-10T08:26:25Z

commit 4fa2d09c1ae879c2ee2760ab419a4f97026dd97b upstream. Due to changes in device and platform code drivers w/o probe will fail to load. This means that the devices for eDMA TPTCs are goign to be without driver and omap hwmod code will turn them off after the kernel finished loading: [ 3.015900] platform 49800000.tptc: omap_device_late_idle: enabled but no driver. Idling [ 3.024671] platform 49a00000.tptc: omap_device_late_idle: enabled but no driver. Idling This will prevent eDMA to work since the TPTCs are not enabled. Signed-off-by: Peter Ujfalusi Fixes: 34635b1accb9 ("dmaengine: edma: Add dummy driver skeleton for edma3-tptc") Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

dmaengine: ti: edma: fix missed failure handling

2020-01-29T09:21:50Z

[ Upstream commit 340049d453682a9fe8d91fe794dd091730f4bb25 ] When devm_kcalloc fails, it forgets to call edma_free_slot. Replace direct return with failure handler to fix it. Fixes: 1be5336bc7ba ("dmaengine: edma: New device tree binding") Signed-off-by: Chuhong Yuan Link: https://lore.kernel.org/r/20191118073802.28424-1-hslester96@gmail.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

dmaengine: ti: edma: Do not reset reserved paRAM slots

2019-10-05T10:27:50Z

[ Upstream commit c5dbe60664b3660f5ac5854e21273ea2e7ff698f ] Skip resetting paRAM slots marked as reserved as they might be used by other cores. Signed-off-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20190823125618.8133-2-peter.ujfalusi@ti.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

dmaengine: edma: Align the memcpy acnt array size with the transfer

2017-10-18T07:20:41Z

commit 87a2f622cc6446c7d09ac655b7b9b04886f16a4c upstream. Memory to Memory transfers does not have any special alignment needs regarding to acnt array size, but if one of the areas are in memory mapped regions (like PCIe memory), we need to make sure that the acnt array size is aligned with the mem copy parameters. Before "dmaengine: edma: Optimize memcpy operation" change the memcpy was set up in a different way: acnt == number of bytes in a word based on __ffs((src | dest | len), bcnt and ccnt for looping the necessary number of words to comlete the trasnfer. Instead of reverting the commit we can fix it to make sure that the ACNT size is aligned to the traswnfer. Fixes: df6694f80365a (dmaengine: edma: Optimize memcpy operation) Signed-off-by: Peter Ujfalusi Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

Merge branch 'fix/edma' into fixes

2015-12-10T03:13:43Z

dmaengine: edma: DT: Change reserved slot array from 16bit to 32bit type

2015-12-10T03:02:42Z

This change makes the DT file to be easier to read since the reserved slots array does not need the '/bits/ 16' to be specified, which might confuse some people. Signed-off-by: Peter Ujfalusi Acked-by: Arnd Bergmann Acked-by: Rob Herring Acked-by: Tony Lindgren Signed-off-by: Vinod Koul

dmaengine: edma: DT: Change memcpy channel array from 16bit to 32bit type

2015-12-10T03:01:10Z

This change makes the DT file to be easier to read since the memcpy channels array does not need the '/bits/ 16' to be specified, which might confuse some people. Signed-off-by: Peter Ujfalusi Acked-by: Arnd Bergmann Acked-by: Rob Herring Acked-by: Tony Lindgren Signed-off-by: Vinod Koul

dmaengine: edma: predecence bug in GET_NUM_QDMACH()

2015-11-16T03:37:35Z

The current code uses bits 0-2 instead of 4-6 as the comment says. Fixes: 633e42b8c546 ('dmaengine: edma: Get qDMA channel information from HW also') Signed-off-by: Dan Carpenter Acked-by: Peter Ujfalusi Signed-off-by: Vinod Koul

dmaengine: edma: fix build without CONFIG_OF

2015-11-16T03:35:31Z

During the edma rework, a build error was introduced for the case that CONFIG_OF is disabled: drivers/built-in.o: In function `edma_tc_set_pm_state': :(.text+0x43bf0): undefined reference to `of_find_device_by_node' As the edma_tc_set_pm_state() function does nothing in case we are running without OF, this adds an IS_ENABLED() check that turns the function into an empty stub then and avoids the link error. Signed-off-by: Arnd Bergmann Fixes: ca304fa9bb76 ("ARM/dmaengine: edma: Public API to use private struct pointer") Acked-by: Peter Ujfalusi Signed-off-by: Vinod Koul

dmaengine: edma: Add dummy driver skeleton for edma3-tptc

2015-11-04T16:41:42Z

The eDMA3 TPTC does not need any software configuration, but it is a separate IP block in the SoC. In order the omap hwmod core to be able to handle the TPTC resources correctly in regards of PM we need to have a driver loaded for it. This patch will add a dummy driver skeleton without probe or remove callbacks provided. Signed-off-by: Peter Ujfalusi Reported-by: Olof Johansson Tested-by: Felipe Balbi Signed-off-by: Vinod Koul