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path: root/drivers/spi/spi-mt65xx.c
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*-. Merge remote-tracking branches 'spi/topic/lm70llp', 'spi/topic/loopback', ↵Mark Brown2016-01-111-15/+21
|\ \ | | | | | | | | | 'spi/topic/mtk' and 'spi/topic/omap2-mcspi' into spi-next
| | * spi: mediatek: Add spi support for mt2701 ICLeilk Liu2015-12-311-0/+3
| | | | | | | | | | | | | | | | | | | | | This patch adds spi support for mt2701 IC. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: mediatek: merge all identical compat to mtk_common_compatLeilk Liu2015-12-311-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch merge all identical compat into on mtk_common_compat and used for all compatible soc. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: mediatek: revise mtk_spi_probe() failure flowLeilk Liu2015-11-251-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | mtk_spi_probe() calls pm_runtime_enable(), after pm_runtime_enable() is called, it should call pm_runtime_disable() in the failure flow. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * Merge branch 'fix/mediatek' of ↵Mark Brown2015-11-251-8/+18
| | |\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-mtk
| | * | spi: mediatek: remove needless pair of writel()/readl()leilk.liu@mediatek.com2015-11-211-3/+0Star
| |/ / | | | | | | | | | | | | | | | | | | | | | It's not need to re-read and re-write SPI_CMD_REG, so remove it. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | | Merge remote-tracking branch 'spi/fix/mtk' into spi-linusMark Brown2016-01-111-10/+18
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| * | spi: mediatek: Prevent overflows in FIFO transfersNicolas Boichat2015-12-301-10/+18
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | In the case where transfer length is not a multiple of 4, KASAN reports 2 out-of-bounds memory accesses: - mtk_spi_interrupt: ioread32_rep writes past the end of trans->rx_buf. - mtk_spi_fifo_transfer: iowrite32_rep reads past the end of xfer->tx_buf. Fix this by using memcpy on the remainder of the bytes. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: mediatek: single device does not require cs_gpiosNicolas Boichat2015-11-161-8/+18
|/ | | | | | | | | | | | | | | When only one device is present, it is not necessary to specify cs_gpios, as the CS line can be controlled by the hardware module. Without this patch, older device tree bindings used before 37457607 "spi: mediatek: mt8173 spi multiple devices support" would cause a panic on boot. This fixes the crash, and re-introduces backward compatibility. Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Acked-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: mt8173 spi multiple devices supportLeilk Liu2015-10-271-13/+52
| | | | | | | | | | | | | | | | | mt8173 IC spi HW has 4 gpio group, it's possible to support max <= 4 slave devices, even mtk spi HW is not congruent to spi core. 1. When a device do a spi_message transfer, spi HW should know which pad-group this device is on, and then writes pad-select register. 2. Mtk pad-select register just selects which MISO pin HW will receive data. For example, pad-select=1(select spi1 pins), HW just receives data from spi1 MISO, but it still send waveform to all 4 group cs/clk/mosi. If cs pin in other groups is still spi mode, after spi1 is selected(by active cs pin), devices on other group will also be selected. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: handle controller_data in mtk_spi_setupLeilk Liu2015-10-271-7/+12
| | | | | | | | controller_data is related with device, so move to master->setup function. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: remove mtk_spi_configLeilk Liu2015-10-271-33/+26Star
| | | | | | | | | mtk_spi_config() and mtk_spi_prepare_message() both initialize spi register, so remove mtk_spi_config() and init all register in mtk_spi_prepare_message(). Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
*-. Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/bcm2835', ↵Mark Brown2015-09-221-30/+23Star
|\ \ | | | | | | | | | 'spi/fix/doc', 'spi/fix/mediatek', 'spi/fix/meson', 'spi/fix/mtk' and 'spi/fix/pxa2xx' into spi-linus
| | * spi: mediatek: fix spi cs polarity errorLeilk Liu2015-09-071-20/+7Star
| |/ |/| | | | | | | | | | | | | | | | | Mediatek spi HW can't set cs inactive(keep cs high) directly. Instead, it supplies pause mode to do it indirectly. If driver unsets SPI_CMD_PAUSE_MODE in CMD_REG, it also needs to reset internal state machine to let cs inactive at once. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * spi: mediatek: fix wrong error return value on probeJavier Martinez Canillas2015-09-161-2/+2
| | | | | | | | | | | | | | | | | | | | Commit adcbcfea15d62 ("spi: mediatek: fix spi clock usage error") added a new sel_clk but introduced bugs in the error paths since the wrong struct clk pointers are passed to PTR_ERR(). Fixes: adcbcfea15d62 ("spi: mediatek: fix spi clock usage error") Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * spi: mediatek: fix spi clock usage errorLeilk Liu2015-08-311-8/+15
| | | | | | | | | | | | | | | | | | | | | | spi clock manages flow: CLK_TOP_SYSPLL3_D2 ---> CLK_TOP_SPI_SEL ---> CLK_PERI_SPI0 (source clock) (clock mux) (clock gate) spi driver should choose source clock by clock mux, then enable clock gate. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * spi: mediatek: remove clk_disable_unprepare()Leilk Liu2015-08-311-1/+0Star
|/ | | | | | | | | This patch removes clk_disable_unprepare() in mtk_spi_remove(). clk_disable_prepare/unprepare must be balance, spi-clk is disabled in mtk_spi_probe, so not needs to disable again. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: fix SPI_CMD_PAUSE_IE macro errorLeilk Liu2015-08-271-1/+1
| | | | | | | | enable pause interrupt should use SPI_CMD_PAUSE_IE MACRO, so fix it. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: replace *_time nameLeilk Liu2015-08-251-12/+8Star
| | | | | | | This patch replaces *_time name in mtk_spi_prepare_transfer(). Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: add PM clk_prepare_enable fail flowLeilk Liu2015-08-251-2/+11
| | | | | | | This patch adds PM clk_prepare_enable fail flow. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: replace int with u32, delete TAB and define ↵Leilk Liu2015-08-251-8/+10
| | | | | | | | | | MTK_SPI_PAUSE_INT_STATUS marco this patch replaces int with u32, deletes TAB, and defines MTK_SPI_PAUSE_INT_STATUS marco. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: add linux/io.h include fileLeilk Liu2015-08-251-0/+1
| | | | | | | | mediatek spi driver uses readl/writel, so add linux/io.h, even so it's implicitly imported by spi/spi.h Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: use BIT() to instead of SPI_CMD_*_OFFSETLeilk Liu2015-08-201-17/+20
| | | | | | | | This patch removes SPI_CMD_*_OFFSET defines, and uses the BIT(x) defines instead. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: medaitek: revise quirks compatibility styleLeilk Liu2015-08-201-18/+7Star
| | | | | | | The quirks are true/false, so define these as bool. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: fix spi incorrect endian usageLeilk Liu2015-08-201-22/+16Star
| | | | | | | | | TX_ENDIAN/RX_ENDIAN bits define whether to reverse the endian order of the data DMA from/to memory. The endian order should keep the same with cpu endian. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: remove redundant clock in prepare_hardware/unprepare_hardwareLeilk Liu2015-08-191-17/+0Star
| | | | | | | | clock in prepare_hardware/unprepare_hardware is redundant with pm_runtime, so remove them. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: Mediatek: fixup cpu_to_le32 incorrect usageLeilk Liu2015-08-131-4/+2Star
| | | | | | | | writel() already does a cpu_to_le32 conversion, so remove cpu_to_le32(). Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: fix endian warningsLeilk Liu2015-08-111-2/+4
| | | | | | | | | | | | | This patch fixes endian warnings detected by sparse: - sparse: incorrect type in argument 1 (different base types) expected unsigned int [unsigned] val got restricted __le32 [usertype] <noident> - sparse: incorrect type in argument 1 (different base types) expected unsigned int [unsigned] val got restricted __le32 [usertype] <noident> Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mt65xx: Fix module aliasAxel Lin2015-08-111-1/+1
| | | | | | | Remove extra space and make the alias matches driver name. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: mtk_spi_driver can be statickbuild test robot2015-08-071-1/+1
| | | | | Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: mediatek: Add spi bus for Mediatek MT8173Leilk Liu2015-08-071-0/+749
This patch adds basic spi bus for MT8173. Signed-off-by: Leilk Liu <leilk.liu@mediatek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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