diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-fsl-dspi.c | 63 |
1 files changed, 61 insertions, 2 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index d83d3496d538..3e9dd645ee54 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -108,11 +108,21 @@ #define SPI_RXFR2 0x84 #define SPI_RXFR3 0x88 +#define SPI_CTARE(x) (0x11c + (((x) & 0x3) * 4)) +#define SPI_CTARE_FMSZE(x) (((x) & 0x1) << 16) +#define SPI_CTARE_DTCP(x) ((x) & 0x7ff) + +#define SPI_SREX 0x13c + #define SPI_FRAME_BITS(bits) SPI_CTAR_FMSZ((bits) - 1) #define SPI_FRAME_BITS_MASK SPI_CTAR_FMSZ(0xf) #define SPI_FRAME_BITS_16 SPI_CTAR_FMSZ(0xf) #define SPI_FRAME_BITS_8 SPI_CTAR_FMSZ(0x7) +/* Register offsets for regmap_pushr */ +#define PUSHR_CMD 0x0 +#define PUSHR_TX 0x2 + #define SPI_CS_INIT 0x01 #define SPI_CS_ASSERT 0x02 #define SPI_CS_DROP 0x04 @@ -133,6 +143,7 @@ enum dspi_trans_mode { struct fsl_dspi_devtype_data { enum dspi_trans_mode trans_mode; u8 max_clock_factor; + bool xspi_mode; }; static const struct fsl_dspi_devtype_data vf610_data = { @@ -143,6 +154,7 @@ static const struct fsl_dspi_devtype_data vf610_data = { static const struct fsl_dspi_devtype_data ls1021a_v1_data = { .trans_mode = DSPI_TCFQ_MODE, .max_clock_factor = 8, + .xspi_mode = true, }; static const struct fsl_dspi_devtype_data ls2085a_data = { @@ -177,6 +189,7 @@ struct fsl_dspi { struct platform_device *pdev; struct regmap *regmap; + struct regmap *regmap_pushr; int irq; struct clk *clk; @@ -876,6 +889,35 @@ static const struct regmap_config dspi_regmap_config = { .volatile_table = &dspi_volatile_table, }; +static const struct regmap_range dspi_xspi_volatile_ranges[] = { + regmap_reg_range(SPI_MCR, SPI_TCR), + regmap_reg_range(SPI_SR, SPI_SR), + regmap_reg_range(SPI_PUSHR, SPI_RXFR3), + regmap_reg_range(SPI_SREX, SPI_SREX), +}; + +static const struct regmap_access_table dspi_xspi_volatile_table = { + .yes_ranges = dspi_xspi_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(dspi_xspi_volatile_ranges), +}; + +static const struct regmap_config dspi_xspi_regmap_config[] = { + { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .max_register = 0x13c, + .volatile_table = &dspi_xspi_volatile_table, + }, + { + .name = "pushr", + .reg_bits = 16, + .val_bits = 16, + .reg_stride = 2, + .max_register = 0x2, + }, +}; + static void dspi_init(struct fsl_dspi *dspi) { regmap_write(dspi->regmap, SPI_MCR, SPI_MCR_MASTER | SPI_MCR_PCSIS); @@ -888,6 +930,7 @@ static int dspi_probe(struct platform_device *pdev) struct spi_master *master; struct fsl_dspi *dspi; struct resource *res; + const struct regmap_config *regmap_config; void __iomem *base; struct fsl_dspi_platform_data *pdata; int ret = 0, cs_num, bus_num; @@ -946,8 +989,11 @@ static int dspi_probe(struct platform_device *pdev) goto out_master_put; } - dspi->regmap = devm_regmap_init_mmio_clk(&pdev->dev, NULL, base, - &dspi_regmap_config); + if (dspi->devtype_data->xspi_mode) + regmap_config = &dspi_xspi_regmap_config[0]; + else + regmap_config = &dspi_regmap_config; + dspi->regmap = devm_regmap_init_mmio(&pdev->dev, base, regmap_config); if (IS_ERR(dspi->regmap)) { dev_err(&pdev->dev, "failed to init regmap: %ld\n", PTR_ERR(dspi->regmap)); @@ -955,6 +1001,19 @@ static int dspi_probe(struct platform_device *pdev) goto out_master_put; } + if (dspi->devtype_data->xspi_mode) { + dspi->regmap_pushr = devm_regmap_init_mmio( + &pdev->dev, base + SPI_PUSHR, + &dspi_xspi_regmap_config[1]); + if (IS_ERR(dspi->regmap_pushr)) { + dev_err(&pdev->dev, + "failed to init pushr regmap: %ld\n", + PTR_ERR(dspi->regmap_pushr)); + ret = PTR_ERR(dspi->regmap); + goto out_master_put; + } + } + dspi_init(dspi); dspi->irq = platform_get_irq(pdev, 0); if (dspi->irq < 0) { |