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path: root/drivers/spi
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2014-09-04spi: sirf: add fifo reset/start for cmd transferQipan Li1-0/+2
for command mode spi transfer, HW spec requires to do fifo reset work to clear FIFO status. Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-04spi: sirf: fix 'cmd_transfer' function typosQipan Li1-4/+3
unify 'cmd_transfer' like 'pio_transfer' and 'dma_transfer' as void function, and also change left_rx_word according to transfer result. Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-04spi: sirf: enable RX_IO_DMA_INT interruptQipan Li1-1/+2
in spi interrupt handler, we need check RX_IO_DMA status to ensure rx fifo have received the specify count data. if not set, the while statement in spi isr function will keep loop, at last, make the kernel hang. [The code is actually there in the interrupt handler but apparently it needs the interrupt unmasking so the handler sees the status -- broonie] Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2014-09-04spi: sirf: correct spi gpio and hardware chipselect behaviourQipan Li1-53/+33
the old codes check the cs-gpios, if the gpio number is 0 like: <&gpio, 0, 0>, the driver will use the only hardware chipselect. this is wrong because of_spi_register_master() can read property cs-gpios from device node and set the spi master's cs number and gpio cs automatically based on whether the cs-gpios is valid. this patch fixes the beviour of CSR spi driver and move to a core level supported way. Signed-off-by: Qipan Li <Qipan.Li@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-03spi: txx9: Fix checkpatch issueJingoo Han1-0/+2
Fix the following checkpatch warnings. Missing a blank line after declarations. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-03spi: tegra20-sflash: Fix checkpatch issueJingoo Han1-1/+2
Fix the following checkpatch warnings. WARNING: macros should not use a trailing semicolon WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-03spi: tegra114: Fix checkpatch issueJingoo Han1-0/+9
Fix the following checkpatch warnings. WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-03spi: orion: Fix checkpatch issueJingoo Han1-2/+3
Fix the following checkpatch warnings. WARNING: else is not generally useful after a break or return WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-03spi: dw: Fix checkpatch issueJingoo Han1-7/+9
Fix the following checkpatch warnings. WARNING: debugfs_remove_recursive(NULL) is safe this check is probably not required WARNING: min() should probably be min_t(u32, rx_left, dw_readw(dws, DW_SPI_RXFLR)) WARNING: else is not generally useful after a break or return WARNING: Missing a blank line after declarations WARNING: void function return statements are not generally useful Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-03spi: davinci: Fix checkpatch issueJingoo Han1-2/+6
Fix the following checkpatch warnings. WARNING: Missing a blank line after declarations WARNING: quoted string split across lines Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-02spi: spi-mxs: Fix checkpatch issueJingoo Han1-1/+3
Fix the following checkpatch warnings. WARNING: Missing a blank line after declarations WARNING: Prefer kcalloc over kzalloc with multiply Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-02spi: xtensa-xtfpga: Fix checkpatch issueJingoo Han1-0/+1
Fix the following checkpatch warnings. WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-02spi: ep93xx: Fix checkpatch issueJingoo Han1-0/+1
Fix the following checkpatch warnings. WARNING: Missing a blank line after declarations Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Mika Westerberg <mika.westerberg@iki.fi> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01spi: dw: Don't use devm_kzalloc in master->setup callbackAxel Lin1-2/+10
device_add() expects that any memory allocated via devm_* API is only done in the device's probe function. Fix below boot warning: WARNING: CPU: 1 PID: 1 at drivers/base/dd.c:286 driver_probe_device+0x2b4/0x2f4() Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.16.0-10474-g835c90b-dirty #160 [<c0016364>] (unwind_backtrace) from [<c001251c>] (show_stack+0x20/0x24) [<c001251c>] (show_stack) from [<c04eaefc>] (dump_stack+0x7c/0x98) [<c04eaefc>] (dump_stack) from [<c0023d4c>] (warn_slowpath_common+0x78/0x9c) [<c0023d4c>] (warn_slowpath_common) from [<c0023d9c>] (warn_slowpath_null+0x2c/0x34) [<c0023d9c>] (warn_slowpath_null) from [<c0302c60>] (driver_probe_device+0x2b4/0x2f4) [<c0302c60>] (driver_probe_device) from [<c0302d90>] (__device_attach+0x50/0x54) [<c0302d90>] (__device_attach) from [<c0300e60>] (bus_for_each_drv+0x54/0x9c) [<c0300e60>] (bus_for_each_drv) from [<c0302958>] (device_attach+0x84/0x90) [<c0302958>] (device_attach) from [<c0301f10>] (bus_probe_device+0x94/0xb8) [<c0301f10>] (bus_probe_device) from [<c03000c0>] (device_add+0x434/0x4fc) [<c03000c0>] (device_add) from [<c0342dd4>] (spi_add_device+0x98/0x164) [<c0342dd4>] (spi_add_device) from [<c03444a4>] (spi_register_master+0x598/0x768) [<c03444a4>] (spi_register_master) from [<c03446b4>] (devm_spi_register_master+0x40/0x80) [<c03446b4>] (devm_spi_register_master) from [<c0346214>] (dw_spi_add_host+0x1a8/0x258) [<c0346214>] (dw_spi_add_host) from [<c0346920>] (dw_spi_mmio_probe+0x1d4/0x294) [<c0346920>] (dw_spi_mmio_probe) from [<c0304560>] (platform_drv_probe+0x3c/0x6c) [<c0304560>] (platform_drv_probe) from [<c0302a98>] (driver_probe_device+0xec/0x2f4) [<c0302a98>] (driver_probe_device) from [<c0302d3c>] (__driver_attach+0x9c/0xa0) [<c0302d3c>] (__driver_attach) from [<c0300f0c>] (bus_for_each_dev+0x64/0x98) [<c0300f0c>] (bus_for_each_dev) from [<c0302518>] (driver_attach+0x2c/0x30) [<c0302518>] (driver_attach) from [<c0302134>] (bus_add_driver+0xdc/0x1f4) [<c0302134>] (bus_add_driver) from [<c03035c8>] (driver_register+0x88/0x104) [<c03035c8>] (driver_register) from [<c030445c>] (__platform_driver_register+0x58/0x6c) [<c030445c>] (__platform_driver_register) from [<c0700f00>] (dw_spi_mmio_driver_init+0x18/0x20) [<c0700f00>] (dw_spi_mmio_driver_init) from [<c0008914>] (do_one_initcall+0x90/0x1d4) [<c0008914>] (do_one_initcall) from [<c06d7d90>] (kernel_init_freeable+0x178/0x248) [<c06d7d90>] (kernel_init_freeable) from [<c04e687c>] (kernel_init+0x18/0xfc) [<c04e687c>] (kernel_init) from [<c000ecd8>] (ret_from_fork+0x14/0x20) Reported-by: Thor Thayer <tthayer@opensource.altera.com> Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2014-09-01spi: dw-pci: remove FSF address and update copyrightAndy Shevchenko1-5/+1
The FSF address is subject to change, thus remove it from the file. While here, update a copyright line. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01spi: dw-pci: provide platform specific data via driver_dataAndy Shevchenko1-6/+14
Instead of checking for device and vendor IDs inside probe function let's provide a helper function via driver_data. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01spi: dw-pci: convert to use dev_pm_opsAndy Shevchenko1-22/+11
Convert system PM callbacks to use dev_pm_ops. In addition remove the PCI calls related to a power state since the bus code cares about this already. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01spi: dw-pci: apply pci_bar and re-use pci_nameAndy Shevchenko1-1/+1
Nevertheless pci_bar is 0 let's explicitly use it when map IO regions. While here, use pci_name instead of dev_name. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01spi: dw-pci: move info message at the end of probeAndy Shevchenko1-3/+3
Let's print info message when controller is found and properly initialized. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-01spi: fsl: Don't use devm_kzalloc in master->setup callbackAxel Lin2-6/+19
device_add() expects that any memory allocated via devm_* API is only done in the device's probe function. Fix below boot warning: [ 3.092348] WARNING: at drivers/base/dd.c:286 [ 3.096637] Modules linked in: [ 3.099697] CPU: 0 PID: 25 Comm: kworker/u2:1 Tainted: G W 3.16.1-s3k-drv-999-svn5771_knld-999 #158 [ 3.109610] Workqueue: deferwq deferred_probe_work_func [ 3.114736] task: c787f020 ti: c790c000 task.ti: c790c000 [ 3.120062] NIP: c01df158 LR: c01df144 CTR: 00000000 [ 3.124983] REGS: c790db30 TRAP: 0700 Tainted: G W (3.16.1-s3k-drv-999-svn5771_knld-999) [ 3.134162] MSR: 00029032 <EE,ME,IR,DR,RI> CR: 22002082 XER: 20000000 [ 3.140703] [ 3.140703] GPR00: 00000001 c790dbe0 c787f020 00000044 00000054 00000308 c056da0e 20737069 [ 3.140703] GPR08: 33323736 000ebfe0 00000308 000ebfdf 22002082 00000000 c046c5a0 c046c608 [ 3.140703] GPR16: c046c614 c046c620 c046c62c c046c638 c046c648 c046c654 c046c68c c046c6c4 [ 3.140703] GPR24: 00000000 00000000 00000003 c0401aa0 c0596638 c059662c c054e7a8 c7996800 [ 3.170102] NIP [c01df158] driver_probe_device+0xf8/0x334 [ 3.175431] LR [c01df144] driver_probe_device+0xe4/0x334 [ 3.180633] Call Trace: [ 3.183093] [c790dbe0] [c01df144] driver_probe_device+0xe4/0x334 (unreliable) [ 3.190147] [c790dc10] [c01dd15c] bus_for_each_drv+0x7c/0xc0 [ 3.195741] [c790dc40] [c01df5fc] device_attach+0xcc/0xf8 [ 3.201076] [c790dc60] [c01dd6d4] bus_probe_device+0xb4/0xc4 [ 3.206666] [c790dc80] [c01db9f8] device_add+0x270/0x564 [ 3.211923] [c790dcc0] [c0219e84] spi_add_device+0xc0/0x190 [ 3.217427] [c790dce0] [c021a79c] spi_register_master+0x720/0x834 [ 3.223455] [c790dd40] [c021cb48] of_fsl_spi_probe+0x55c/0x614 [ 3.229234] [c790dda0] [c01e0d2c] platform_drv_probe+0x30/0x74 [ 3.234987] [c790ddb0] [c01df18c] driver_probe_device+0x12c/0x334 [ 3.241008] [c790dde0] [c01dd15c] bus_for_each_drv+0x7c/0xc0 [ 3.246602] [c790de10] [c01df5fc] device_attach+0xcc/0xf8 [ 3.251937] [c790de30] [c01dd6d4] bus_probe_device+0xb4/0xc4 [ 3.257536] [c790de50] [c01de9d8] deferred_probe_work_func+0x98/0xe0 [ 3.263816] [c790de70] [c00305b8] process_one_work+0x18c/0x440 [ 3.269577] [c790dea0] [c0030a00] worker_thread+0x194/0x67c [ 3.275105] [c790def0] [c0039198] kthread+0xd0/0xe4 [ 3.279911] [c790df40] [c000c6d0] ret_from_kernel_thread+0x5c/0x64 [ 3.285970] Instruction dump: [ 3.288900] 80de0000 419e01d0 3b7b0038 3c60c046 7f65db78 38635264 48211b99 813f00a0 [ 3.296559] 381f00a0 7d290278 3169ffff 7c0b4910 <0f000000> 93df0044 7fe3fb78 4bfffd4d Reported-by: leroy christophe <christophe.leroy@c-s.fr> Signed-off-by: Axel Lin <axel.lin@ingics.com> Tested-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2014-08-31spi/drivers: Restrict COMPILE_TEST by HAS_DMA where neededGeert Uytterhoeven1-2/+5
commit dd1053a93fdc11d4 ("spi/drivers: Enable build of drivers with COMPILE_TEST") allows compile-testing drivers on platforms they're not meant for. However, adding "|| COMPILE_TEST" bypasses all other implicit dependencies assumed by the platform dependencies before, like HAS_DMA. If NO_DMA=y: drivers/built-in.o: In function `atmel_spi_dma_unmap_xfer': drivers/spi/spi-atmel.c:915: undefined reference to `dma_unmap_single' drivers/spi/spi-atmel.c:918: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `atmel_spi_next_xfer_data': drivers/spi/spi-atmel.c:690: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `atmel_spi_dma_map_xfer': drivers/spi/spi-atmel.c:890: undefined reference to `dma_map_single' drivers/spi/spi-atmel.c:893: undefined reference to `dma_mapping_error' drivers/spi/spi-atmel.c:897: undefined reference to `dma_map_single' drivers/spi/spi-atmel.c:900: undefined reference to `dma_mapping_error' drivers/spi/spi-atmel.c:902: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `atmel_spi_probe': drivers/spi/spi-atmel.c:1540: undefined reference to `dma_alloc_coherent' drivers/spi/spi-atmel.c:1623: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `atmel_spi_remove': drivers/spi/spi-atmel.c:1665: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `ep93xx_spi_dma_finish': drivers/spi/spi-ep93xx.c:550: undefined reference to `dma_unmap_sg' drivers/built-in.o: In function `ep93xx_spi_dma_prepare': drivers/spi/spi-ep93xx.c:516: undefined reference to `dma_map_sg' drivers/spi/spi-ep93xx.c:522: undefined reference to `dma_unmap_sg' drivers/built-in.o: In function `omap2_mcspi_rx_dma': drivers/spi/spi-omap2-mcspi.c:475: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `omap2_mcspi_txrx_dma': drivers/spi/spi-omap2-mcspi.c:589: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `omap2_mcspi_transfer_one_message': drivers/spi/spi-omap2-mcspi.c:1202: undefined reference to `dma_map_single' drivers/spi/spi-omap2-mcspi.c:1204: undefined reference to `dma_mapping_error' drivers/spi/spi-omap2-mcspi.c:1211: undefined reference to `dma_map_single' drivers/spi/spi-omap2-mcspi.c:1213: undefined reference to `dma_mapping_error' drivers/spi/spi-omap2-mcspi.c:1217: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `tegra_spi_deinit_dma_param': drivers/spi/spi-tegra114.c:675: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `tegra_spi_copy_spi_rxbuf_to_client_rxbuf': drivers/spi/spi-tegra114.c:415: undefined reference to `dma_sync_single_for_cpu' drivers/spi/spi-tegra114.c:440: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `tegra_spi_copy_client_txbuf_to_spi_txbuf': drivers/spi/spi-tegra114.c:381: undefined reference to `dma_sync_single_for_cpu' drivers/spi/spi-tegra114.c:405: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `tegra_spi_start_dma_based_transfer': drivers/spi/spi-tegra114.c:543: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `tegra_slink_deinit_dma_param': drivers/spi/spi-tegra20-slink.c:705: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `tegra_slink_copy_spi_rxbuf_to_client_rxbuf': drivers/spi/spi-tegra20-slink.c:427: undefined reference to `dma_sync_single_for_cpu' drivers/spi/spi-tegra20-slink.c:452: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `tegra_slink_copy_client_txbuf_to_spi_txbuf': drivers/spi/spi-tegra20-slink.c:393: undefined reference to `dma_sync_single_for_cpu' drivers/spi/spi-tegra20-slink.c:417: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `tegra_slink_start_dma_based_transfer': drivers/spi/spi-tegra20-slink.c:561: undefined reference to `dma_sync_single_for_cpu' Add dependencies on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-08-31Merge remote-tracking branch 'spi/fix/sh-msiof' into spi-linusMark Brown1-2/+2
2014-08-31spi: sh-msiof: Fix transmit-only DMA transfersGeert Uytterhoeven1-2/+2
Fix tx/rx mixup, which broke transmit-only transfers. Introduced by commit 4240305f7cbdc7782aa8bc40cc702775d9ac0839 ("spi: sh-msiof: Fix leaking of unused DMA descriptors"). Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-30Merge remote-tracking branches 'spi/fix/au1550', 'spi/fix/davinci', ↵Mark Brown9-49/+76
'spi/fix/doc', 'spi/fix/dw', 'spi/fix/omap-mcspi', 'spi/fix/pxa2xx', 'spi/fix/rockchip' and 'spi/fix/rspi' into spi-linus
2014-08-29spi: bcm53xx: make local symbol staticJingoo Han1-1/+1
Make local symbol static, because this is used only in this file. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-08-29spi/rockchip: Avoid accidentally turning off the clockDoug Anderson1-1/+1
If our client is requesting a clock that is above the maximum clock then the following division will result in 0: rs->max_freq / rs->speed We'll then program 0 into the SPI_BAUDR register. The Rockchip TRM says: "If the value is 0, the serial output clock (sclk_out) is disabled." It's much better to end up with the fastest possible clock rather than a clock that is off, so enforce a minimum value. Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-08-28spi: sh-msiof: Add support for new R-Car Gen2 SoCsGeert Uytterhoeven1-0/+6
Add support for MSIOF in: - r8a7792 (R-Car V2H) - r8a7793 (R-Car M2-N) - r8a7794 (R-Car E2) r8a7791 is now called "R-Car M2-W". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-28spi: rspi: Add support for new R-Car Gen2 SoCsGeert Uytterhoeven1-1/+1
Add support for QSPI in: - r8a7792 (R-Car V2H) - r8a7793 (R-Car M2-N) - r8a7794 (R-Car E2) r8a7791 is now called "R-Car M2-W". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-27spi: dw: fix kernel crash due to NULL pointer dereferenceAndy Shevchenko1-1/+1
The obvious fix after the commit d9c73bb8a3a5 "spi: dw: add support for gpio controlled chip select". This patch fixes the issue by using locally defined temporary variable. Fixes: d9c73bb8a3a5 (spi: dw: add support for gpio controlled chip select) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: <stable@vger.kernel.org>
2014-08-27spi: dw-pci: fix bug when regs left uninitializedAndy Shevchenko1-0/+2
The commit 04f421e7 "spi: dw: use managed resources" changes drivers to use managed functions, but seems wasn't properly tested in PCI case. The regs field of struct dw_spi left uninitialized. Thus, kernel crashes when tries to access to the SPI controller registers. This patch fixes the issue. Fixes: 04f421e7 (spi: dw: use managed resources) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
2014-08-21spi: davinci: fix SPI_NO_CS functionalityGrygorii Strashko1-8/+8
The driver should not touch CS lines if SPI_NO_CS flag is set. This patch fixes it as this functionality was broken accidentally by commit a88e34ea213e1b ("spi: davinci: add support to configure gpio cs through dt"). Fixes: a88e34ea213e1b ("spi: davinci: add support to configure gpio cs through dt") Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-20spi/rockchip: fixup incorrect dma direction settingAddy Ke1-1/+1
Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-20spi/pxa2xx: Add ACPI ID for Intel BraswellAlan Cox1-0/+1
The SPI host controller is the same as used in Baytrail, only the ACPI ID is different so add this new ID to the list. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
2014-08-19spi: spi-au1550: fix build failureManuel Lauss1-1/+1
Fix a build failure introduced with commit 30670539b86 (spi: au1550: Fix bug in deallocation of memory) Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-19spi/pxa2xx-pci: remove unnecessary assignmentAndy Shevchenko1-1/+0
There is no need to unset driver data pointer at removal stage. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-19spi: Only call transfer_one() if we have buffers to transferMark Brown1-18/+26
Client drivers such as the ChomeOS EC driver sometimes use transfers with no buffers and only a delay specified in order to allow a delay after the assertion of /CS. Rather than require controller drivers handle this noop case gracefully put checks in the core to ensure that we don't call into the controller for such transfers. Reported-by: Addy Ke <addy.ke@rock-chips.com> Tested-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-19spi: bcm53xx: driver for SPI controller on Broadcom bcma SoCRafał Miłecki4-0/+374
Broadcom 53xx ARM SoCs use bcma bus that contains various cores (AKA devices). If board has a serial flash, it's connected over SPI and the bcma bus includes a SPI controller. Example log from such a board: bus0: Found chip with id 53010, rev 0x00 and package 0x02 (...) bus0: Core 18 found: SPI flash controller (manuf 0x4BF, id 0x50A, rev 0x01, class 0x0) This patch adds a bcma driver for SPI core, it registers SPI master controller and "bcm53xxspiflash" SPI device. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-18spi: fsl-dspi: Convert to use regmap framework's endianness method.Xiubo Li1-3/+0
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Acked-by: Chao Fu <b44548@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi/pxa2xx-pci: Add common clock framework support in PCI glue layerChew, Chiau Ee2-2/+21
SPI PXA2XX core layer has dependency on common clock framework to obtain information on host supported clock rate. Thus, we setup the clock device in the PCI glue layer to enable PCI mode host pass in the clock rate information. Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Acked-by: Kweh, Hock Leong <hock.leong.kweh@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: xilinx: Remove .owner field for driverMichal Simek1-1/+0
There is no need to init .owner field. Based on the patch from Peter Griffin <peter.griffin@linaro.org> "mmc: remove .owner field for drivers using module_platform_driver" This patch removes the superflous .owner field for drivers which use the module_platform_driver API, as this is overriden in platform_driver_register anyway." Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: sh-msiof: Fix transmit-only DMA transfersGeert Uytterhoeven1-2/+2
Fix tx/rx mixup, which broke transmit-only transfers. Introduced by commit 4240305f7cbdc7782aa8bc40cc702775d9ac0839 ("spi: sh-msiof: Fix leaking of unused DMA descriptors"). Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: sh-msiof: Return early in sh_msiof_dma_once() where possibleGeert Uytterhoeven1-9/+4
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: sh-msiof: Add DT support to DMA setupGeert Uytterhoeven1-7/+18
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: sh-msiof: Configure DMA slave bus widthGeert Uytterhoeven1-2/+5
The new Renesas R-Car Gen2 DMA Controller driver (rcar-dmac) requires explicit configuration of the DMA slave bus width. Hardcode the DMA transfer size to 4 bytes, as MSIOF DMA is limited to 32-bit words. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: rspi: Add DT support to DMA setupGeert Uytterhoeven1-14/+23
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: rspi: Configure DMA slave bus width to 8 bitGeert Uytterhoeven1-2/+5
The new Renesas R-Car Gen2 DMA Controller driver (rcar-dmac) requires explicit configuration of the DMA slave bus width. Hardcode the DMA transfer size to 1 byte for both directions, as that's the only supported configuration (16-bit DMA support was removed in commit 9c5de2c1754c2bb3c69c4d7bf0d0edc0a61d8232 ("spi: rspi: Remove unused 16-bit DMA support")). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: rspi: Use devm_kasprintf()Geert Uytterhoeven1-4/+3
Use the devm_kasprintf() helper function instead of open coding error-prone buffer handling and string formatting. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: rspi: Remove unneeded semicolonGeert Uytterhoeven1-1/+1
Introduced by commit 426ef76dd8a394a0e04d096941cd9acb49539a3e ("spi: rspi: Add DT support"). Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: rspi: Fix leaking of unused DMA descriptorsGeert Uytterhoeven1-36/+58
If dmaengine_prep_slave_sg() or dmaengine_submit() fail, we may leak unused DMA descriptors. As per Documentation/dmaengine.txt, once a DMA descriptor has been obtained, it must be submitted. Hence: - First prepare and submit all DMA descriptors, - Prepare the SPI controller for DMA, - Start DMA by calling dma_async_issue_pending(), - Make sure to call dmaengine_terminate_all() on all descriptors that haven't completed. Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16spi: sh-msiof: Fix leaking of unused DMA descriptorsGeert Uytterhoeven1-33/+38
If dmaengine_prep_slave_sg() or dmaengine_submit() fail, we may leak unused DMA descriptors. As per Documentation/dmaengine.txt, once a DMA descriptor has been obtained, it must be submitted. Hence: - First prepare and submit all DMA descriptors, - Prepare the SPI controller for DMA, - Start DMA by calling dma_async_issue_pending(), - Make sure to call dmaengine_terminate_all() on all descriptors that haven't completed. Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
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