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*-. \ Merge remote-tracking branches 'spi/topic/res', 'spi/topic/rockchip', ↵Mark Brown2016-03-111-21/+35
|\ \ \ | | |/ | |/| | | | 'spi/topic/sh', 'spi/topic/ti-qspi' and 'spi/topic/xilinx' into spi-next
| | * spi: rockchip: covert rsd_nsecs to u32 typeShawn Lin2016-03-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rsd_nsecs is defined as u8 memeber of struct rockchip_spi, but using of_property_read_u32. That means we take risk of truncation by type conversion if we pass on big value from dt. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: rockchip: header file cleanupShawn Lin2016-03-101-10/+4
| | | | | | | | | | | | | | | | | | | | | | | | Remove some of unused header files and reoder it into alphabetical order. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: rockchip: check requesting dma channel with EPROBE_DEFERShawn Lin2016-03-091-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Let's defer probing the driver if the return value of dma_request_slave_channel is ERR_PTR(-EPROBE_DEFER) instead of disabling dma capability directly. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: rockchip: migrate to dmaengine_terminate_asyncShawn Lin2016-03-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | dmaengine_terminate_all is deprecated, let's use dmaengine_terminate_async for interrupt handling. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: rockchip: check return value of dmaengine_prep_slave_sgShawn Lin2016-03-091-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | We should check return value of dmaengine_prep_slave_sg, otherwise we take risk of null pointer. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi/rockchip: fix endian mode for 16-bit transfersAlexander Kochetkov2016-03-061-1/+2
| | | | | | | | | | | | | | | | | | | | | 16-bit transfers must be in big endian mode on wire. Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi/rockchip: Make sure spi clk is on in rockchip_spi_set_csHuibin Hong2016-03-051-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rockchip_spi_set_cs could be called by spi_setup, but spi_setup may be called by device driver after runtime suspend. Then the spi clock is closed, rockchip_spi_set_cs may access the spi registers, which causes cpu block in some socs. Fixes: 64e36824b32 ("spi/rockchip: add driver for Rockchip RK3xxx") Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: rockchip: add bindings for rk3399 spiXu Jianqun2016-02-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add devicetree bindings for Rockchip rk3399 spi which found on Rockchip rk3399 SoCs. Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: rockchip: remove xfer_completion from rockchip_spiShawn Lin2016-02-161-2/+0
| |/ | | | | | | | | | | | | | | xfer_completion isn't been used anywhere, so it can be removed. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi: rockchip: add missing spi_master_putShawn Lin2016-02-151-0/+2
| | | | | | | | | | | | | | | | Add missing spi_master_put for rockchip_spi_remove since it calls spi_master_get already. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi: rockchip: disable runtime pm when in err caseShawn Lin2016-02-151-0/+1
|/ | | | | | | | | Before registering master, driver enables runtime pm. This patch pm_runtime_disable in err case while probing driver to balance pm reference count. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* spi/rockchip: remove unnecessary memset of rockchip_spiAlexey Klimov2015-07-071-1/+0
| | | | | | | | Memory for struct rockchip_spi is allocated by spi_alloc_master() using kzalloc() so it doesn't need to be set to 0 one more time. Signed-off-by: Alexey Klimov <klimov.linux@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
*---. Merge remote-tracking branches 'spi/topic/qup', 'spi/topic/rockchip', ↵Mark Brown2015-04-111-4/+32
|\ \ \ | | | | | | | | | | | | 'spi/topic/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next
| | * | spi/rockchip: Add device tree property to configure Rx Sample DelayJulius Werner2015-03-261-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have found that we can sometimes see read failures on boards with high-capacitance SPI lines. It seems that the controller samples the Rx data line too early, and its register interface has an "Rx Sample Delay" setting to fine-tune against this issue. This patch adds a new optional device tree entry that can configure this delay in terms of nanoseconds. The kernel will calculate the best-fitting amount of parent clock ticks to program the controller with based on that. Signed-off-by: Julius Werner <jwerner@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * | spi/rockchip: do an error handling in proper timeAndy Shevchenko2015-03-061-4/+11
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | There was handle_err() callback introduced that is dedicated for error handling. The patch moves error handling to this callback. Cc: Heiko Stuebner <heiko@sntech.de> Cc: linux-rockchip@lists.infradead.org Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* / / spi/rockchip: Round up clock rate divisor to err on the safe sideJulius Werner2015-03-261-1/+1
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Rockchip SPI driver currently calculates its clock rate divisor by integer dividing the parent rate by the target rate, and then rounding the result up to the next even number (since the divisor must be even). Clock rate divisors should always be rounded up, so that the resulting frequency is lower or equal to the target. This is correctly done in the second step here but not in the first, so we still have a risk of exceeding the desired target frequency (e.g. setting spi-max-frequency to 40000000 with a parent clock of 99000000 could lead to a divisor of 99000000 / 40000000 == 2 (which is even) that then results in an effective frequency of 99000000 / 2 == 49500000 (potentially exceeding the flash chip's specifications). This patch changes the division to round up to fix this problem. Signed-off-by: Julius Werner <jwerner@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi/rockchip: avoid uninitialized-use warningArnd Bergmann2015-01-281-2/+4
|/ | | | | | | | | | | | | | | | | | | | We currently get a warning about potentially uninitialized variables in the rockchip spi driver, at least in certain toolchain versions: spi/spi-rockchip.c: In function 'rockchip_spi_prepare_dma': include/linux/dmaengine.h:796:2: warning: 'txdesc' may be used uninitialized in this function include/linux/dmaengine.h:796:2: warning: 'rxdesc' may be used uninitialized in this function The reason seems to be that gcc cannot know whether the value of the rs->rx and rs->tx variables change between the two points these are accessed. The code is actually correct, but to make this clearer to the compiler, this changes the conditionals to test for the local rxdesc/txdesc variables instead, which it knows won't change. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
* Merge tag 'pm+acpi-3.19-rc1-2' of ↵Linus Torvalds2014-12-181-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management updates from Rafael Wysocki: "These are regression fixes (leds-gpio, ACPI backlight driver, operating performance points library, ACPI device enumeration messages, cpupower tool), other bug fixes (ACPI EC driver, ACPI device PM), some cleanups in the operating performance points (OPP) framework, continuation of CONFIG_PM_RUNTIME elimination, a couple of minor intel_pstate driver changes, a new MAINTAINERS entry for it and an ACPI fan driver change needed for better support of thermal management in user space. Specifics: - Fix a regression in leds-gpio introduced by a recent commit that inadvertently changed the name of one of the properties used by the driver (Fabio Estevam). - Fix a regression in the ACPI backlight driver introduced by a recent fix that missed one special case that had to be taken into account (Aaron Lu). - Drop the level of some new kernel messages from the ACPI core introduced by a recent commit to KERN_DEBUG which they should have used from the start and drop some other unuseful KERN_ERR messages printed by ACPI (Rafael J Wysocki). - Revert an incorrect commit modifying the cpupower tool (Prarit Bhargava). - Fix two regressions introduced by recent commits in the OPP library and clean up some existing minor issues in that code (Viresh Kumar). - Continue to replace CONFIG_PM_RUNTIME with CONFIG_PM throughout the tree (or drop it where that can be done) in order to make it possible to eliminate CONFIG_PM_RUNTIME (Rafael J Wysocki, Ulf Hansson, Ludovic Desroches). There will be one more "CONFIG_PM_RUNTIME removal" batch after this one, because some new uses of it have been introduced during the current merge window, but that should be sufficient to finally get rid of it. - Make the ACPI EC driver more robust against race conditions related to GPE handler installation failures (Lv Zheng). - Prevent the ACPI device PM core code from attempting to disable GPEs that it has not enabled which confuses ACPICA and makes it report errors unnecessarily (Rafael J Wysocki). - Add a "force" command line switch to the intel_pstate driver to make it possible to override the blacklisting of some systems in that driver if needed (Ethan Zhao). - Improve intel_pstate code documentation and add a MAINTAINERS entry for it (Kristen Carlson Accardi). - Make the ACPI fan driver create cooling device interfaces witn names that reflect the IDs of the ACPI device objects they are associated with, except for "generic" ACPI fans (PNP ID "PNP0C0B"). That's necessary for user space thermal management tools to be able to connect the fans with the parts of the system they are supposed to be cooling properly. From Srinivas Pandruvada" * tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) MAINTAINERS: add entry for intel_pstate ACPI / video: update the skip case for acpi_video_device_in_dod() power / PM: Eliminate CONFIG_PM_RUNTIME NFC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM SCSI / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / EC: Fix unexpected ec_remove_handlers() invocations Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()" tracing / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM x86 / PM: Replace CONFIG_PM_RUNTIME in io_apic.c PM: Remove the SET_PM_RUNTIME_PM_OPS() macro mmc: atmel-mci: use SET_RUNTIME_PM_OPS() macro PM / Kconfig: Replace PM_RUNTIME with PM in dependencies ARM / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM sound / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM phy / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM video / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM tty / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / PM: Do not disable wakeup GPEs that have not been enabled ACPI / utils: Drop error messages from acpi_evaluate_reference() ...
| * spi: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki2014-12-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under drivers/spi/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mark Brown <broonie@kernel.org>
* | Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds2014-12-141-1/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
| * \ Merge branch 'platform/remove_owner' of ↵Greg Kroah-Hartman2014-11-031-1/+0
| |\ \ | | |/ | |/| | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next Remove all .owner fields from platform drivers
| | * spi: drop owner assignment from platform_driversWolfram Sang2014-10-201-1/+0
| | | | | | | | | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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*-. \ \ Merge remote-tracking branches 'spi/topic/mxs', 'spi/topic/pxa', ↵Mark Brown2014-12-081-2/+0
|\ \ \ \ | |_|/ / |/| | / | | |/ | |/| 'spi/topic/rockchip', 'spi/topic/samsung' and 'spi/topic/sirf' into spi-next
| | * spi/rockchip: remove redundant call to spi_master_put()Laurentiu Palcu2014-11-121-2/+0
| |/ | | | | | | | | | | | | | | The call to spi_master_put() in rockchip_spi_remove() is redundant since the master is registered using devm_. This patch removes it. Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi/rockchip: spi controller must be disabled in tx callback tooAddy Ke2014-10-171-1/+3
| | | | | | | | | | Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi/rockchip: fix bug that cause spi transfer timed out in DMA duplex modeAddy Ke2014-10-151-11/+23
| | | | | | | | | | | | | | | | In rx mode, dma must be prepared before spi is enabled. But in tx and tr mode, spi must be enabled first. Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi/rockchip: fix bug that case spi can't go as fast as slave requestAddy Ke2014-10-151-0/+12
|/ | | | | | | | | Because the minimum divisor in rk3x's spi controller is 2, if spi_clk is less than 2 * sclk_out, we can't get the right divisor. So we must set spi_clk again to match slave request. Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* Merge remote-tracking branch 'spi/fix/rockchip' into spi-linusMark Brown2014-10-031-8/+7
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| * spi/rockchip: fix bug that cause the failure to read data in DMA modeAddy Ke2014-09-251-8/+7
| | | | | | | | | | | | | | | | | | | | In my test on RK3288-pinky board, if spi is enabled, it will begin to read data from slave regardless of whether the DMA is ready. So we need prepare DMA before spi is enable. Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
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*-. \ Merge remote-tracking branches 'spi/fix/davinci', 'spi/fix/dw', ↵Mark Brown2014-09-161-2/+3
|\ \ \ | | |/ | |/| | | | 'spi/fix/fsl', 'spi/fix/pl022', 'spi/fix/rockchip' and 'spi/fix/sirf' into spi-linus
| | * spi/rockchip: Don't warn if SPI is busy but disabledDoug Anderson2014-09-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The reference manual from Rockchip claims this about the BSF (SPI Busy Flag): * 0 - SPI is idle or disabled * 1 - SPI is actively transferring data The above doesn't quite appear to be true. Specifically I found the busy bit set when SPI was disabled. Let's change the WARN_ON() so we only check the busy bit if the controller was enabled. Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi/rockchip: Fix the wait_for_idle() timeoutDoug Anderson2014-09-041-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The wait_for_idle() could get unlucky and timeout too quickly. Specifically, the old calculation was effectively: timeout = jiffies + 1; if (jiffies >= timeout) print warning; From the above it should be obvious that if jiffies ticks in just the wrong place then we'll have an effective timeout of 0. Fix this by effectively changing the above ">=" to a ">". That gives us an extra jiffy to finish. Signed-off-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* | spi/rockchip: Avoid accidentally turning off the clockDoug Anderson2014-08-291-1/+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>
* | spi/rockchip: fixup incorrect dma direction settingAddy Ke2014-08-201-1/+1
|/ | | | | Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: fix error return code in rockchip_spi_probe()Wei Yongjun2014-07-251-0/+1
| | | | | | | | Fix to return -EINVAL from the error handling case instead of 0 when failed to get fifo length. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: remove redundant dev_err call in rockchip_spi_probe()Wei Yongjun2014-07-251-1/+0
| | | | | | | | | There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: remove duplicated include from spi-rockchip.cWei Yongjun2014-07-251-1/+0
| | | | | | | Remove duplicated include. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: add compatible strings for RK3188 and RK3288Addy Ke2014-07-111-0/+2
| | | | | | Suggested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Addy Ke <addy.ke@rockchip.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: master->mode_bits: remove SPI_CS_HIGH bitAddy Ke2014-07-111-6/+1
| | | | | | Suggested-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Addy Ke <addy.ke@rockchip.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: call wait_for_idle() for the transfer to completeAddy Ke2014-07-111-5/+19
| | | | | | Suggested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Addy Ke <addy.ke@rockchip.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: cleanup some coding issues and uncessary outputAddy Ke2014-07-111-18/+23
| | | | | | Suggested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Addy Ke <addy.ke@rockchip.com> Signed-off-by: Mark Brown <broonie@linaro.org>
* spi/rockchip: add driver for Rockchip RK3xxx SoCs integrated SPIaddy ke2014-07-041-0/+822
In order to facilitate understanding, rockchip SPI controller IP design looks similar in its registers to designware. But IC implementation is different from designware, So we need a dedicated driver for Rockchip RK3XXX SoCs integrated SPI. The main differences: - dma request line: rockchip SPI controller have two DMA request line for tx and rx. - Register offset: RK3288 dw SPI_CTRLR0 0x0000 0x0000 SPI_CTRLR1 0x0004 0x0004 SPI_SSIENR 0x0008 0x0008 SPI_MWCR NONE 0x000c SPI_SER 0x000c 0x0010 SPI_BAUDR 0x0010 0x0014 SPI_TXFTLR 0x0014 0x0018 SPI_RXFTLR 0x0018 0x001c SPI_TXFLR 0x001c 0x0020 SPI_RXFLR 0x0020 0x0024 SPI_SR 0x0024 0x0028 SPI_IPR 0x0028 NONE SPI_IMR 0x002c 0x002c SPI_ISR 0x0030 0x0030 SPI_RISR 0x0034 0x0034 SPI_TXOICR NONE 0x0038 SPI_RXOICR NONE 0x003c SPI_RXUICR NONE 0x0040 SPI_MSTICR NONE 0x0044 SPI_ICR 0x0038 0x0048 SPI_DMACR 0x003c 0x004c SPI_DMATDLR 0x0040 0x0050 SPI_DMARDLR 0x0044 0x0054 SPI_TXDR 0x0400 NONE SPI_RXDR 0x0800 NONE SPI_IDR NONE 0x0058 SPI_VERSION NONE 0x005c SPI_DR NONE 0x0060 - register configuration: such as SPI_CTRLRO in rockchip SPI controller: cr0 = (CR0_BHT_8BIT << CR0_BHT_OFFSET) | (CR0_SSD_ONE << CR0_SSD_OFFSET); cr0 |= (rs->n_bytes << CR0_DFS_OFFSET); cr0 |= ((rs->mode & 0x3) << CR0_SCPH_OFFSET); cr0 |= (rs->tmode << CR0_XFM_OFFSET); cr0 |= (rs->type << CR0_FRF_OFFSET); For more information, see RK3288 chip manual. - Wait for idle: Must ensure that the FIFO data has been sent out before the next transfer. Signed-off-by: addy ke <addy.ke@rock-chips.com> Signed-off-by: Mark Brown <broonie@linaro.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 03:23:48 +0000