Lines Matching refs:spi

15 #include <linux/spi/spi.h>

19 #define DRIVER_NAME "rockchip-spi"

153 /* sclk_out: spi master internal logic in rk3x can support 50Mhz */

206     bool cs_inactive;          /* spi slave tansmition stop when cs inactive */

232     dev_warn(rs->dev, "spi controller is in busy state!\n");

250 static void rockchip_spi_set_cs(struct spi_device *spi, bool enable)

252     struct spi_controller *ctlr = spi->controller;

254     bool cs_asserted = spi->mode & SPI_CS_HIGH ? enable : !enable;

257     if (cs_asserted == rs->cs_asserted[spi->chip_select]) {

265         if (spi->cs_gpiod) {

268             ROCKCHIP_SPI_SET_BITS(rs->regs + ROCKCHIP_SPI_SER, BIT(spi->chip_select));

271         if (spi->cs_gpiod) {

274             ROCKCHIP_SPI_CLR_BITS(rs->regs + ROCKCHIP_SPI_SER, BIT(spi->chip_select));

281     rs->cs_asserted[spi->chip_select] = cs_asserted;

288     /* stop running spi transfer

332      * level while spi is enabled, so instead make sure to leave

366     /* When int_cs_inactive comes, spi slave abort */

509     /* rx must be started before tx due to spi instinct */

532 static int rockchip_spi_config(struct rockchip_spi *rs, struct spi_device *spi, struct spi_transfer *xfer, bool use_dma,

546     cr0 |= (spi->mode & 0x3U) << CR0_SCPH_OFFSET;

547     if (spi->mode & SPI_LSB_FIRST) {

550     if (spi->mode & SPI_CS_HIGH) {

551         cr0 |= BIT(spi->chip_select) << CR0_SOI_OFFSET;

632 static size_t rockchip_spi_max_transfer_size(struct spi_device *spi)

694 static int rockchip_spi_transfer_one(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer)

714     use_dma = ctlr->can_dma ? ctlr->can_dma(ctlr, spi, xfer) : false;

716     ret = rockchip_spi_config(rs, spi, xfer, use_dma, ctlr->slave);

728 static bool rockchip_spi_can_dma(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer)

733     /* if the numbor of spi words to transfer is less than the fifo

750     slave_mode = of_property_read_bool(np, "spi-slave");

1051         .compatible = "rockchip,px30-spi",

1054         .compatible = "rockchip,rk3036-spi",

1057         .compatible = "rockchip,rk3066-spi",

1060         .compatible = "rockchip,rk3188-spi",

1063         .compatible = "rockchip,rk3228-spi",

1066         .compatible = "rockchip,rk3288-spi",

1069         .compatible = "rockchip,rk3308-spi",

1072         .compatible = "rockchip,rk3328-spi",

1075         .compatible = "rockchip,rk3368-spi",

1078         .compatible = "rockchip,rk3399-spi",

1081         .compatible = "rockchip,rv1108-spi",

1084         .compatible = "rockchip,rv1126-spi",