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path: root/drivers/spi/zynq_spi.c
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* spi: zynq_spi: Add cadence compatible stringMichal Simek2015-12-11-0/+1
| | | | | | | Extend compatible list table for cdns,spi-r1p6 compatible string. Reviewed-by: Jagan Teki <jteki@openedev.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* spi: zynq_[q]spi: Use GENMASK macroJagan Teki2015-10-27-3/+3
| | | | | | | | | | | GENMASK macro used on zynq_spi.c and zynq_qspi.c GENMASK is used to create a contiguous bitmask([hi:lo]). Ex: (0x7 << 3) => GENMASK(5, 3) Cc: Michal Simek <michal.simek@xilinx.com> Acked-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: zynq_[q]spi: Use BIT macroJagan Teki2015-10-27-8/+8
| | | | | | | | | | | | Used BIT macro on zynq_spi.c and zynq_qspi.c :%s/(1 << nr)/BIT(nr)/g where nr = 0, 1, 2 .... 31 Cc: Michal Simek <michal.simek@xilinx.com> Acked-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: zynq_spi: Remove unneeded headersJagan Teki2015-10-25-5/+1
| | | | | | | | | - Removed unneeded inclusion of header files - Add "Xilinx" on license text Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: zynq_spi: Store cs value into private dataJagan Teki2015-10-25-3/+5
| | | | | | | Store cs value into private data and use it while activating chipselect instead of passing through function. Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: zynq_spi: Rename baudrate divisor mask nameJagan Teki2015-10-25-2/+2
| | | | | | | Rename ZYNQ_SPI_CR_BRD_MASK to ZYNQ_SPI_CR_BAUD_MASK for more readable. Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: zynq_spi: Add config reg shift named macrosJagan Teki2015-10-25-3/+7
| | | | | | | Update the numerical values for baudrate and chipselect with config reg shift named macro's Signed-off-by: Jagan Teki <jteki@openedev.com>
* spi: zynq_spi: Fix to configure CPOL, CPHA maskJagan Teki2015-10-11-3/+4
| | | | | | | | | | | | | priv->mode is initialized when .set_speed triggers with mode value, so checking mode for configuring CPOL, CPHA using priv->mode is invalid hence use mode from .set_speed argument, and at the end priv->mode will initialized with mode. This patch also replaces formatting string to use speed instead of mode in .set_speed ops. Signed-off-by: Jagan Teki <jteki@openedev.com>
* dm: Use dev_get_addr() where possibleSimon Glass2015-08-31-1/+1
| | | | | | | | | | This is a convenient way for a driver to get the hardware address of a device, when regmap or syscon are not being used. Change existing callers to use it as an example to others. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
* spi: zynq_spi: Simplify debug macroMichal Simek2015-07-28-1/+1
| | | | | | Trivial fix. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* spi: Fix zynq SPI bindingMichal Simek2015-07-28-1/+1
| | | | | | | | Zynq is using Cadence IP where binding is documented in the Linux kernel and there is no reason to use different binding. Synchronize it. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* spi: zynq_spi: Add fdt support in driverJagan Teki2015-07-01-10/+13
| | | | | | | | | | | | | | | | | Now zynq spi driver platform data is controlled by devicetree, enable the status by saying "okay" on respective board dts to use the devicetree generated platdata. Ex: &spi1 { status = "okay"; }; Signed-off-by: Jagan Teki <jteki@openedev.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Tested-by: Jagan Teki <jteki@openedev.com>
* dm: spi: zynq_spi: Convert to driver modelJagan Teki2015-07-01-124/+169
| | | | | | | | | | | | | | | | This converts the zynq spi driver to use the driver model. Minimal functional changes like using meaningful name on structure members wrt mainlined dm spi drivers. - input_hz -> frequency - req_hz -> freq - base -> regs Signed-off-by: Jagan Teki <jteki@openedev.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Tested-by: Jagan Teki <jteki@openedev.com>
* zynq: spi: Remove unnecessary error conditionSiva Durga Prasad Paladugu2015-04-22-3/+0
| | | | | | | | | | Removed the unnecessary error check from spi_xfer as the bitlen zero is possible now to deassert the chip select for which no data is required to be transfered. Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
* spi: Add zynq spi controller driverJagannadha Sutradharudu Teki2013-08-07-0/+280
Zynq spi controller driver supports 2 buses and 3 chipselects on each bus. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com> Acked-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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