diff options
| -rw-r--r-- | drivers/spi/spi-rockchip.c | 5 | ||||
| -rw-r--r-- | drivers/spi/spi-rspi.c | 36 | ||||
| -rw-r--r-- | include/linux/spi/spi.h | 3 |
3 files changed, 39 insertions, 5 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 2cc6d9951b52..70ef63e0b6b8 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -843,14 +843,17 @@ static const struct dev_pm_ops rockchip_spi_pm = { }; static const struct of_device_id rockchip_spi_dt_match[] = { - { .compatible = "rockchip,rv1108-spi", }, + { .compatible = "rockchip,px30-spi", }, { .compatible = "rockchip,rk3036-spi", }, { .compatible = "rockchip,rk3066-spi", }, { .compatible = "rockchip,rk3188-spi", }, { .compatible = "rockchip,rk3228-spi", }, { .compatible = "rockchip,rk3288-spi", }, + { .compatible = "rockchip,rk3308-spi", }, + { .compatible = "rockchip,rk3328-spi", }, { .compatible = "rockchip,rk3368-spi", }, { .compatible = "rockchip,rk3399-spi", }, + { .compatible = "rockchip,rv1108-spi", }, { }, }; MODULE_DEVICE_TABLE(of, rockchip_spi_dt_match); diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index aef05f2ac749..06192c9ea813 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -24,6 +24,7 @@ #include <linux/sh_dma.h> #include <linux/spi/spi.h> #include <linux/spi/rspi.h> +#include <linux/spinlock.h> #define RSPI_SPCR 0x00 /* Control Register */ #define RSPI_SSLP 0x01 /* Slave Select Polarity Register */ @@ -79,8 +80,7 @@ #define SPCR_BSWAP 0x01 /* Byte Swap of read-data for DMAC */ /* SSLP - Slave Select Polarity Register */ -#define SSLP_SSL1P 0x02 /* SSL1 Signal Polarity Setting */ -#define SSLP_SSL0P 0x01 /* SSL0 Signal Polarity Setting */ +#define SSLP_SSLP(i) BIT(i) /* SSLi Signal Polarity Setting */ /* SPPCR - Pin Control Register */ #define SPPCR_MOIFE 0x20 /* MOSI Idle Value Fixing Enable */ @@ -181,7 +181,9 @@ struct rspi_data { void __iomem *addr; u32 max_speed_hz; struct spi_controller *ctlr; + struct platform_device *pdev; wait_queue_head_t wait; + spinlock_t lock; /* Protects RMW-access to RSPI_SSLP */ struct clk *clk; u16 spcmd; u8 spsr; @@ -919,6 +921,29 @@ static int qspi_setup_sequencer(struct rspi_data *rspi, return 0; } +static int rspi_setup(struct spi_device *spi) +{ + struct rspi_data *rspi = spi_controller_get_devdata(spi->controller); + u8 sslp; + + if (spi->cs_gpiod) + return 0; + + pm_runtime_get_sync(&rspi->pdev->dev); + spin_lock_irq(&rspi->lock); + + sslp = rspi_read8(rspi, RSPI_SSLP); + if (spi->mode & SPI_CS_HIGH) + sslp |= SSLP_SSLP(spi->chip_select); + else + sslp &= ~SSLP_SSLP(spi->chip_select); + rspi_write8(rspi, sslp, RSPI_SSLP); + + spin_unlock_irq(&rspi->lock); + pm_runtime_put(&rspi->pdev->dev); + return 0; +} + static int rspi_prepare_message(struct spi_controller *ctlr, struct spi_message *msg) { @@ -1248,17 +1273,20 @@ static int rspi_probe(struct platform_device *pdev) goto error1; } + rspi->pdev = pdev; pm_runtime_enable(&pdev->dev); init_waitqueue_head(&rspi->wait); + spin_lock_init(&rspi->lock); ctlr->bus_num = pdev->id; + ctlr->setup = rspi_setup; ctlr->auto_runtime_pm = true; ctlr->transfer_one = ops->transfer_one; ctlr->prepare_message = rspi_prepare_message; ctlr->unprepare_message = rspi_unprepare_message; - ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST | SPI_LOOP | - ops->extra_mode_bits; + ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_CS_HIGH | SPI_LSB_FIRST | + SPI_LOOP | ops->extra_mode_bits; ctlr->flags = ops->flags; ctlr->dev.of_node = pdev->dev.of_node; ctlr->use_gpio_descriptors = true; diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 87105272879b..38286de779e3 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -135,6 +135,8 @@ extern int spi_delay_exec(struct spi_delay *_delay, struct spi_transfer *xfer); * @modalias: Name of the driver to use with this device, or an alias * for that name. This appears in the sysfs "modalias" attribute * for driver coldplugging, and in uevents used for hotplugging + * @driver_override: If the name of a driver is written to this attribute, then + * the device will bind to the named driver and only the named driver. * @cs_gpio: LEGACY: gpio number of the chipselect line (optional, -ENOENT when * not using a GPIO line) use cs_gpiod in new drivers by opting in on * the spi_master. @@ -443,6 +445,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @spi_transfer->ptp_sts_word_post were transmitted. * If the driver does not set this, the SPI core takes the snapshot as * close to the driver hand-over as possible. + * @irq_flags: Interrupt enable state during PTP system timestamping * * Each SPI controller can communicate with one or more @spi_device * children. These make a small bus, sharing MOSI, MISO and SCK signals |