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linux/drivers/spi
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Clark Wang c23fdef891
spi: lpspi: Improve the stability of lpspi data transmission 
Use SR_TDF to judge if need to send data, and SR_FCF is to judge if
transmission end and to replace the waiting after transmission end.
This waiting has no actual meaning, for module will set the FCF
flag at the real end.

The changes of interrupt flag and ISR function reduce the times of
calling ISR. The use of the FCF flag improves the stability of the
data transmission. These two points generally improve the data
transfer speed of lpspi, especially when it is set to slave mode
it can support higher transfer speed of the host.

After making these changes, there is no need to use
fsl_lpspi_txfifo_empty(), so remove it.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-01-07 15:17:25 +00:00
..
atmel-quadspi.c
spi: Add QuadSPI driver for Atmel SAMA5D2
2018-11-07 13:21:19 +00:00
internals.h
spi: Add an helper to flush the message queue
2018-04-23 15:48:18 +01:00
Kconfig
Merge remote-tracking branches 'spi/topic/mem' and 'spi/topic/mtd' into spi-next
2018-12-20 16:01:30 +00:00
Makefile
Merge remote-tracking branches 'spi/topic/mem' and 'spi/topic/mtd' into spi-next
2018-12-20 16:01:30 +00:00
spi-altera.c
spi: altera: Consolidate TX/RX data register access
2017-08-16 11:53:31 +01:00
spi-armada-3700.c
Merge remote-tracking branches 'spi/topic/a3700', 'spi/topic/atmel', 'spi/topic/bcm53xx', 'spi/topic/davinci' and 'spi/topic/dw' into spi-next
2018-01-26 17:57:24 +00:00
spi-at91-usart.c
spi: fix spi-at91-usart.c build errors when PINCTRL is not set
2018-12-03 11:57:14 +00:00
spi-ath79.c
spi: add flags parameter to txrx_word function pointers
2018-08-01 14:50:24 +01:00
spi-atmel.c
spi: Do not print a message if spi_controller_{suspend,resume}() fails
2018-09-05 12:38:27 +01:00
spi-au1550.c
…
spi-axi-spi-engine.c
spi: spi-axi: fix potential use-after-free after deregistration
2017-10-31 11:15:10 +00:00
spi-bcm63xx-hsspi.c
spi/bcm63xx-hsspi: keep pll clk enabled
2018-09-18 09:16:34 -07:00
spi-bcm63xx.c
spi/bcm63xx: fix error return code in bcm63xx_spi_probe()
2017-08-08 11:36:35 +01:00
spi-bcm2835.c
spi: bcm2835: Synchronize with callback on DMA termination
2018-12-04 16:51:55 +00:00
spi-bcm2835aux.c
spi: bcm2835: make license text and module license match
2018-11-14 14:18:18 -08:00
spi-bcm-qspi.c
spi: bcm-qspi: switch back to reading flash using smaller chunks
2018-10-11 15:00:34 +01:00
spi-bcm-qspi.h
…
spi-bitbang-txrx.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spi-bitbang.c
spi: spi-gpio: add SPI_3WIRE support
2018-08-01 14:50:28 +01:00
spi-brcmstb-qspi.c
…
spi-butterfly.c
spi: add flags parameter to txrx_word function pointers
2018-08-01 14:50:24 +01:00
spi-cadence.c
spi: cadence: Fix missing clk_disable_unprepare() on error in cnds_runtime_resume()
2018-07-11 15:34:53 +01:00
spi-cavium-octeon.c
…
spi-cavium-thunderx.c
…
spi-cavium.c
…
spi-cavium.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spi-clps711x.c
…
spi-coldfire-qspi.c
…
spi-davinci.c
spi: spi-davinci: Don't error when SPI_CS_WORD and cs_gpio
2018-09-18 10:40:34 -07:00
spi-dln2.c
…
spi-dw-mid.c
spi: dw: Convert to generalized SPI controller API
2018-02-12 12:04:16 +00:00
spi-dw-mmio.c
spi: dw-mmio: add ACPI support
2018-12-04 17:24:57 +00:00
spi-dw-pci.c
…
spi-dw.c
spi: dw-mmio: add ACPI support
2018-12-04 17:24:57 +00:00
spi-dw.h
dw: spi: add support for Amazon's Alpine spi controller
2018-10-11 15:11:04 +01:00
spi-efm32.c
…
spi-ep93xx.c
spi: spi-ep93xx: Use dma_data_direction for ep93xx_spi_dma_{finish,prepare}
2018-10-09 00:11:28 +01:00
spi-falcon.c
spi: spi-falcon: drop check of boot select
2017-09-01 11:33:22 +01:00
spi-fsl-cpm.c
…
spi-fsl-cpm.h
…
spi-fsl-dspi.c
spi: spi-fsl-dspi: use IRQF_SHARED mode to request IRQ
2018-11-05 11:53:28 +00:00
spi-fsl-espi.c
spi: Do not print a message if spi_controller_{suspend,resume}() fails
2018-09-05 12:38:27 +01:00
spi-fsl-lib.c
…
spi-fsl-lib.h
spi: fsl-espi: separate fsl-espi from fsl-lib completely
2016-11-14 11:21:48 +00:00
spi-fsl-lpspi.c
spi: lpspi: Improve the stability of lpspi data transmission
2019-01-07 15:17:25 +00:00
spi-fsl-spi.c
Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next
2017-04-26 15:58:04 +01:00
spi-fsl-spi.h
…
spi-geni-qcom.c
spi: spi-geni-qcom: Simplify probe function
2018-11-05 11:53:52 +00:00
spi-gpio.c
spi: gpio: Support 3WIRE high-impedance turn-around
2018-11-07 16:15:49 +00:00
spi-img-spfi.c
spi: img-spfi: Set device select bits for SPFI port state
2018-07-30 16:31:54 +01:00
spi-imx.c
spi: imx: drop useless member speed_hz from driver data struct
2018-12-11 12:00:18 +00:00
spi-iproc-qspi.c
…
spi-jcore.c
spi: jcore: disable ref_clk after getting its rate
2018-03-18 17:57:42 -07:00
spi-lantiq-ssc.c
Merge remote-tracking branches 'spi/topic/devprop', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/lantiq' into spi-next
2017-04-26 15:58:04 +01:00
spi-lm70llp.c
spi: add flags parameter to txrx_word function pointers
2018-08-01 14:50:24 +01:00
spi-loopback-test.c
spi: loopback-test: implement testing with no CS
2017-07-26 13:08:56 +01:00
spi-lp8841-rtc.c
…
spi-mem.c
Merge remote-tracking branches 'spi/topic/mem' and 'spi/topic/mtd' into spi-next
2018-12-20 16:01:30 +00:00
spi-meson-spicc.c
spi: meson-spicc: Fix error handling in meson_spicc_probe()
2018-05-02 05:59:21 +09:00
spi-meson-spifc.c
…
spi-mpc52xx-psc.c
…
spi-mpc52xx.c
spi: mpc52xx: Use gpio_is_valid()
2018-04-27 12:05:39 +01:00
spi-mpc512x-psc.c
…
spi-mt65xx.c
spi: mediatek: add spi support for mt7629 IC
2018-11-27 14:17:20 +00:00
spi-mxic.c
spi: Add MXIC controller driver
2018-11-05 11:55:06 +00:00
spi-mxs.c
spi: mxs: Switch to SPDX identifier
2018-05-03 10:27:43 +09:00
spi-npcm-pspi.c
spi: npcm-pspi: Fix wrong priv pointer
2019-01-03 12:27:17 +00:00
spi-nuc900.c
…
spi-oc-tiny.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
spi-omap2-mcspi.c
spi: omap2-mcspi: Add missing suspend and resume calls
2018-11-15 16:20:43 -08:00
spi-omap-100k.c
…
spi-omap-uwire.c
…
spi-orion.c
spi: orion: cosmetics - alias long direct_access variables
2018-09-03 15:14:18 +01:00
spi-pic32-sqi.c
spi: pic32-sqi: don't pass GFP_DMA32 to dma_alloc_coherent
2018-10-17 11:11:32 +01:00
spi-pic32.c
spi: pic32: Use proper enum in dmaengine_prep_slave_rg
2018-09-20 18:11:22 -07:00
spi-pl022.c
spi: pl022: Handle cs_change for last transfer
2018-11-13 10:05:49 -08:00
spi-ppc4xx.c
spi/ppc4xx: Use kcalloc() in spi_ppc4xx_of_probe()
2017-01-17 18:34:25 +00:00
spi-pxa2xx-dma.c
spi: pxa2xx: Use core message processing loop
2018-04-17 17:11:30 +01:00
spi-pxa2xx-pci.c
spi: pca2xx-pci: Allow MSI
2017-01-23 18:09:37 +00:00
spi-pxa2xx.c
spi: pxa2xx: Fix '"CONFIG_OF" is not defined' warning
2018-11-16 19:06:24 -08:00
spi-pxa2xx.h
spi: pxa2xx: Add ready signal
2018-11-13 10:02:09 -08:00
spi-qcom-qspi.c
spi: spi-qcom-qspi: Fix remaining driver nits
2018-11-22 14:38:13 +00:00
spi-qup.c
spi: qup: fix 64-bit build warning
2017-08-10 15:50:23 +01:00
spi-rb4xx.c
spi: rb4xx: Use SPI_BPW_MASK to set bits_per_word_mask
2018-10-10 12:48:06 +01:00
spi-rockchip.c
spi: rockchip: support lsb-first mode
2018-11-05 11:42:43 +00:00
spi-rspi.c
spi: spi-rspi: simplify getting .driver_data
2018-11-05 11:54:50 +00:00
spi-s3c24xx-fiq.h
…
spi-s3c24xx-fiq.S
…
spi-s3c24xx.c
…
spi-s3c64xx.c
spi: spi-s3c64xx: Fix system resume support
2018-05-17 13:27:08 +09:00
spi-sc18is602.c
spi: sc18is602: Add OF device ID table
2017-02-22 10:50:09 -08:00
spi-sh-hspi.c
spi: use SPDX identifier for Renesas drivers
2018-08-28 20:32:00 +01:00
spi-sh-msiof.c
spi: sh-msiof: Reduce the number of times write to and perform the transmission from FIFO
2018-12-20 14:56:11 +00:00
spi-sh-sci.c
spi: add flags parameter to txrx_word function pointers
2018-08-01 14:50:24 +01:00
spi-sh.c
spi: use SPDX identifier for Renesas drivers
2018-08-28 20:32:00 +01:00
spi-sirf.c
spi: sirf: account for const type of of_device_id.data
2018-01-03 11:38:46 +00:00
spi-slave-mt27xx.c
spi: mediatek: add spi slave for Mediatek MT2712
2018-09-28 14:29:14 +01:00
spi-slave-system-control.c
spi: slave: Fix missing break in switch
2018-10-03 16:23:10 +01:00
spi-slave-time.c
spi: slave: Add SPI slave handler reporting uptime at previous message
2017-05-26 13:12:04 +01:00
spi-sprd-adi.c
spi: sprd: Change to use devm_hwspin_lock_request_specific()
2018-06-26 13:52:27 -07:00
spi-sprd.c
spi: sprd: don't mark remove function as __exit
2018-09-27 23:26:43 +01:00
spi-st-ssc4.c
spi: st-ssc4: whitespace cleanup
2017-05-26 12:41:07 +01:00
spi-stm32-qspi.c
spi: spi-mem: add stm32 qspi controller
2018-10-19 13:32:56 +01:00
spi-stm32.c
spi: stm32: Fix error handling in stm32_spi_probe()
2018-04-17 11:46:23 +01:00
spi-sun4i.c
spi: sun4i: disable clocks in the remove function
2017-12-07 11:59:15 +00:00
spi-sun6i.c
spi: sun6i: disable/unprepare clocks on remove
2017-12-07 17:45:17 +00:00
spi-tegra20-sflash.c
spi: tegra20-sflash: explicitly request exclusive reset control
2017-07-19 17:06:31 +01:00
spi-tegra20-slink.c
spi: tegra20-slink: explicitly enable/disable clock
2018-09-03 12:23:41 +01:00
spi-tegra114.c
spi: tegra114: correct register name in definition
2017-10-09 10:16:38 +01:00
spi-test.h
spi: loopback-test: add elapsed time check
2017-03-17 21:54:08 +00:00
spi-ti-qspi.c
spi: ti-qspi: Make sure res_mmap != NULL before dereferencing it
2018-05-17 13:36:00 +09:00
spi-tle62x0.c
…
spi-topcliff-pch.c
spi/topcliff-pch: Delete an error message for a failed memory allocation in pch_spi_set_tx()
2017-01-17 18:38:02 +00:00
spi-txx9.c
…
spi-uniphier.c
spi: uniphier: remove unnecessary include headers
2018-08-02 11:08:06 +01:00
spi-xcomm.c
…
spi-xilinx.c
spi: xilinx: Add support for xlnx,axi-quad-spi-1.00.a
2017-11-27 16:31:20 +00:00
spi-xlp.c
spi: xlp: fix error return code in xlp_spi_probe()
2017-08-08 11:36:07 +01:00
spi-xtensa-xtfpga.c
spi: add flags parameter to txrx_word function pointers
2018-08-01 14:50:24 +01:00
spi-zynqmp-gqspi.c
spi: spi-zynqmp-gqspi: simplify getting .driver_data
2018-11-05 11:54:35 +00:00
spi.c
spi: Use of_node_name_eq for node name comparisons
2018-12-06 20:15:43 +00:00
spidev.c
spi: spidev: Fix OF tree warning logic
2018-10-10 13:46:54 +01:00