diff options
| author | Han Xu <han.xu@freescale.com> | 2015-08-04 10:25:29 -0500 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-08-06 10:07:39 -0700 |
| commit | 80d37724089bc5d09fa12601a763bde01899ba88 (patch) | |
| tree | 336077eaf73b8fcde750f4adc6bccd78639cbd46 /drivers/mtd | |
| parent | 49bd706aac8fe7fa90988ecd3fd5c276575b194e (diff) | |
| download | linux-80d37724089bc5d09fa12601a763bde01899ba88.tar.bz2 | |
mtd: spi-nor: fsl-quadspi: use quirk to distinguish different qspi version
add several quirk to distinguish different version of qspi module.
Signed-off-by: Han Xu <han.xu@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 2d460368ce5f..91bfeac79722 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -28,6 +28,11 @@ #include <linux/mtd/spi-nor.h> #include <linux/mutex.h> +/* Controller needs driver to swap endian */ +#define QUADSPI_QUIRK_SWAP_ENDIAN (1 << 0) +/* Controller needs 4x internal clock */ +#define QUADSPI_QUIRK_4X_INT_CLK (1 << 1) + /* The registers */ #define QUADSPI_MCR 0x00 #define QUADSPI_MCR_RESERVED_SHIFT 16 @@ -204,20 +209,23 @@ struct fsl_qspi_devtype_data { int rxfifo; int txfifo; int ahb_buf_size; + int driver_data; }; static struct fsl_qspi_devtype_data vybrid_data = { .devtype = FSL_QUADSPI_VYBRID, .rxfifo = 128, .txfifo = 64, - .ahb_buf_size = 1024 + .ahb_buf_size = 1024, + .driver_data = QUADSPI_QUIRK_SWAP_ENDIAN, }; static struct fsl_qspi_devtype_data imx6sx_data = { .devtype = FSL_QUADSPI_IMX6SX, .rxfifo = 128, .txfifo = 512, - .ahb_buf_size = 1024 + .ahb_buf_size = 1024, + .driver_data = QUADSPI_QUIRK_4X_INT_CLK, }; #define FSL_QSPI_MAX_CHIP 4 @@ -241,14 +249,14 @@ struct fsl_qspi { struct mutex lock; }; -static inline int is_vybrid_qspi(struct fsl_qspi *q) +static inline int needs_swap_endian(struct fsl_qspi *q) { - return q->devtype_data->devtype == FSL_QUADSPI_VYBRID; + return q->devtype_data->driver_data & QUADSPI_QUIRK_SWAP_ENDIAN; } -static inline int is_imx6sx_qspi(struct fsl_qspi *q) +static inline int needs_4x_clock(struct fsl_qspi *q) { - return q->devtype_data->devtype == FSL_QUADSPI_IMX6SX; + return q->devtype_data->driver_data & QUADSPI_QUIRK_4X_INT_CLK; } /* @@ -257,7 +265,7 @@ static inline int is_imx6sx_qspi(struct fsl_qspi *q) */ static inline u32 fsl_qspi_endian_xchg(struct fsl_qspi *q, u32 a) { - return is_vybrid_qspi(q) ? __swab32(a) : a; + return needs_swap_endian(q) ? __swab32(a) : a; } static inline void fsl_qspi_unlock_lut(struct fsl_qspi *q) @@ -652,7 +660,7 @@ static int fsl_qspi_nor_setup_last(struct fsl_qspi *q) unsigned long rate = q->clk_rate; int ret; - if (is_imx6sx_qspi(q)) + if (needs_4x_clock(q)) rate *= 4; ret = clk_set_rate(q->clk, rate); |