snowball/legacy-kernel.git/drivers/dma, branch igloo-dev

Squash

2011-12-16T14:04:55+00:00

Change-Id: I2fcf46d1fc4b0cd4c61e5be3654c43b80db86015

dmaengine/ste_dma40: limit burst size to 16

2011-10-25T12:33:14+00:00

The client is not aware of the maximum burst size in the dma driver. If the size exceeds 16 set max to 16. ST-Ericsson ID: 363565 ST-Ericsson FOSS-OUT ID: Trivial ST-Ericsson Linux next: NA Change-Id: I298b779db3d42944f2fcc9688fe519f640cca99d Signed-off-by: Per Forlin Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34361 Reviewed-by: QATOOLS Reviewed-by: QABUILD Reviewed-by: Linus WALLEIJ

dmaengine/ste_dma40: set dma max seg to 0xffff

2011-10-25T11:08:32+00:00

Maximum DMA seg size is (0xffff x data_width). If max seg size is not set it deafults to 64k. This results in failure if transferring 64k in byte mode. Large seg sizes may be supported by splitting large transfer. ---------------- commit d49278e3351b34870cbffffc5067348a318e7b06 Author: Per Forlin Date: Mon Dec 20 18:31:38 2010 +0100 dmaengine: dma40: Add support to split up large elements ---------------- This patch has been rejected or lost on kernel 3.0. It exists on mainline kernel 3.0. ST-Ericsson ID: 363565 ST-Ericsson FOSS-OUT ID: Trivial ST-Ericsson Linux next: NA Change-Id: I7c0bf09df04cb20da2164c5c40f3a0ae73e65289 Signed-off-by: Per Forlin Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34405 Reviewed-by: QATOOLS Reviewed-by: Linus WALLEIJ

dmaengine/ste_dma40: fix memory leak due to prepared descriptors

2011-10-24T09:32:12+00:00

Prepared descriptors that are not submitted will not be freed. Add prepared descriptor to a list to be able to release them upon dmaengine_terminate_all(). ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA Change-Id: I93bb2bd072851c435c0dcf0a50deab63d9c1b735 Signed-off-by: Per Forlin Acked-by: Linus Walleij Signed-off-by: Vinod Koul Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34968 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: Per FORLIN Reviewed-by: Jonas ABERG

dmaengine/ste_dma40: fix Oops due to double free of client descriptor

2011-10-22T16:48:09+00:00

The client list may exist in two lists at the same time. This makes free fail since the same desc is freed multiple times. Remove desc from client list when adding it to the pending queue. Move free of client owned descriptors from free_dma() to terminate_all(). Unable to handle kernel paging request at virtual address 00100104 pgd = dea8c000 [00100104] *pgd=1ea62831, *pte=00000000, *ppte=00000000 Internal error: Oops: 817 [#1] PREEMPT SMP Modules linked in: CPU: 0 Not tainted (3.1.0-rc3+ #58) PC is at d40_free_chan_resources+0x64/0x330 ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA Change-Id: I66946e99ec5a47f6c5600bffc62ea9f56b6ff257 Signed-off-by: Per Forlin Acked-by: Linus Walleij Signed-off-by: Vinod Koul Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34964 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: Per FORLIN Reviewed-by: Linus WALLEIJ

dmaengine/ste_dma40: add missing kernel doc for pending_queue

2011-10-22T16:47:53+00:00

ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA Change-Id: I1f1ebdc763a3213cad3c1a4ef85159ea4cf303bb Signed-off-by: Per Forlin Acked-by: Linus Walleij Signed-off-by: Vinod Koul Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34962 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: Per FORLIN Reviewed-by: Linus WALLEIJ

dmaengine/ste_dma40: add a separate queue for pending requests

2011-10-22T16:47:31+00:00

ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA tx_submit will add descriptors to the pending queue. Issue pending will then move the pending descriptors to the transfer queue. Change-Id: I788d74f7680e050b85a6245505c43285a1a027fc Signed-off-by: Per Forlin Signed-off-by: Vinod Koul Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34960 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: Per FORLIN Reviewed-by: Linus WALLEIJ

dmaengine/ste_dma40: remove duplicate call to d40_pool_lli_free().

2011-10-22T16:47:16+00:00

d40_desc_free() already calls d40_pool_lli_free(). ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA Change-Id: I1c967138a0683eceef3f11cc7f8a977dcfcdfecb Signed-off-by: Per Forlin Acked-by: Linus Walleij Signed-off-by: Vinod Koul Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34949 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: Linus WALLEIJ

dmaengine/ste_dma40: use AMBA PrimeCell helper macros

2011-10-22T16:46:56+00:00

The DMA40 is not a PrimeCell from ARM, but it still use the same ID registers. So let's utilize the existing macros in the PrimeCell header to identify manufacturer and revision of the IP block instead of reinventing the wheel. ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA Change-Id: I212b38f374a877b1a335e6324e8a437602cbda6c Cc: Robert Marklund Cc: Per Forlin Cc: Rabin Vincent Signed-off-by: Linus Walleij Signed-off-by: Vinod Koul Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34940 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: Linus WALLEIJ

dma40: use flags to reduce parameter count

2011-10-22T16:46:39+00:00

ST-Ericsson ID: 362972 ST-Ericsson FOSS-OUT ID: NA ST-Ericsson Linux next: NA Change-Id: I9e7b1b347c56d320ec573e68cd40581866bf0882 Acked-by: Per Forlin Acked-by: Jonas Aaberg Signed-off-by: Rabin Vincent Signed-off-by: Linus Walleij Signed-off-by: Dan Williams Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/34911 Tested-by: Narayanan GOPALAKRISHNAN Reviewed-by: QATOOLS