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linux-next/drivers/spi/spi-cavium.h
Jan Glauber 7347a6c7af spi: octeon: Add ThunderX driver 
Add ThunderX SPI driver using the shared part from the Octeon
driver. The main difference of the ThunderX driver is that it
is a PCI device so probing is different. The system clock settings
can be specified in device tree.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-19 16:24:39 +01:00

333 lines
7.1 KiB
C
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#ifndef __SPI_CAVIUM_H
#define __SPI_CAVIUM_H
#include <linux/clk.h>
#define OCTEON_SPI_MAX_BYTES 9
#define OCTEON_SPI_MAX_CLOCK_HZ 16000000
struct octeon_spi_regs {
int config;
int status;
int tx;
int data;
};
struct octeon_spi {
void __iomem *register_base;
u64 last_cfg;
u64 cs_enax;
int sys_freq;
struct octeon_spi_regs regs;
struct clk *clk;
};
#define OCTEON_SPI_CFG(x) (x->regs.config)
#define OCTEON_SPI_STS(x) (x->regs.status)
#define OCTEON_SPI_TX(x) (x->regs.tx)
#define OCTEON_SPI_DAT0(x) (x->regs.data)
int octeon_spi_transfer_one_message(struct spi_master *master,
struct spi_message *msg);
/* MPI register descriptions */
#define CVMX_MPI_CFG (CVMX_ADD_IO_SEG(0x0001070000001000ull))
#define CVMX_MPI_DATX(offset) (CVMX_ADD_IO_SEG(0x0001070000001080ull) + ((offset) & 15) * 8)
#define CVMX_MPI_STS (CVMX_ADD_IO_SEG(0x0001070000001008ull))
#define CVMX_MPI_TX (CVMX_ADD_IO_SEG(0x0001070000001010ull))
union cvmx_mpi_cfg {
uint64_t u64;
struct cvmx_mpi_cfg_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t csena3:1;
uint64_t csena2:1;
uint64_t csena1:1;
uint64_t csena0:1;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t csena:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t csena:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t csena0:1;
uint64_t csena1:1;
uint64_t csena2:1;
uint64_t csena3:1;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} s;
struct cvmx_mpi_cfg_cn30xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t reserved_12_15:4;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t csena:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t csena:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t reserved_12_15:4;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn30xx;
struct cvmx_mpi_cfg_cn31xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t reserved_11_15:5;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t csena:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t csena:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t reserved_11_15:5;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn31xx;
struct cvmx_mpi_cfg_cn30xx cn50xx;
struct cvmx_mpi_cfg_cn61xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t reserved_14_15:2;
uint64_t csena1:1;
uint64_t csena0:1;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t reserved_6_6:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t reserved_6_6:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t csena0:1;
uint64_t csena1:1;
uint64_t reserved_14_15:2;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn61xx;
struct cvmx_mpi_cfg_cn66xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_29_63:35;
uint64_t clkdiv:13;
uint64_t csena3:1;
uint64_t csena2:1;
uint64_t reserved_12_13:2;
uint64_t cslate:1;
uint64_t tritx:1;
uint64_t idleclks:2;
uint64_t cshi:1;
uint64_t reserved_6_6:1;
uint64_t int_ena:1;
uint64_t lsbfirst:1;
uint64_t wireor:1;
uint64_t clk_cont:1;
uint64_t idlelo:1;
uint64_t enable:1;
#else
uint64_t enable:1;
uint64_t idlelo:1;
uint64_t clk_cont:1;
uint64_t wireor:1;
uint64_t lsbfirst:1;
uint64_t int_ena:1;
uint64_t reserved_6_6:1;
uint64_t cshi:1;
uint64_t idleclks:2;
uint64_t tritx:1;
uint64_t cslate:1;
uint64_t reserved_12_13:2;
uint64_t csena2:1;
uint64_t csena3:1;
uint64_t clkdiv:13;
uint64_t reserved_29_63:35;
#endif
} cn66xx;
struct cvmx_mpi_cfg_cn61xx cnf71xx;
};
union cvmx_mpi_datx {
uint64_t u64;
struct cvmx_mpi_datx_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_8_63:56;
uint64_t data:8;
#else
uint64_t data:8;
uint64_t reserved_8_63:56;
#endif
} s;
struct cvmx_mpi_datx_s cn30xx;
struct cvmx_mpi_datx_s cn31xx;
struct cvmx_mpi_datx_s cn50xx;
struct cvmx_mpi_datx_s cn61xx;
struct cvmx_mpi_datx_s cn66xx;
struct cvmx_mpi_datx_s cnf71xx;
};
union cvmx_mpi_sts {
uint64_t u64;
struct cvmx_mpi_sts_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_13_63:51;
uint64_t rxnum:5;
uint64_t reserved_1_7:7;
uint64_t busy:1;
#else
uint64_t busy:1;
uint64_t reserved_1_7:7;
uint64_t rxnum:5;
uint64_t reserved_13_63:51;
#endif
} s;
struct cvmx_mpi_sts_s cn30xx;
struct cvmx_mpi_sts_s cn31xx;
struct cvmx_mpi_sts_s cn50xx;
struct cvmx_mpi_sts_s cn61xx;
struct cvmx_mpi_sts_s cn66xx;
struct cvmx_mpi_sts_s cnf71xx;
};
union cvmx_mpi_tx {
uint64_t u64;
struct cvmx_mpi_tx_s {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_22_63:42;
uint64_t csid:2;
uint64_t reserved_17_19:3;
uint64_t leavecs:1;
uint64_t reserved_13_15:3;
uint64_t txnum:5;
uint64_t reserved_5_7:3;
uint64_t totnum:5;
#else
uint64_t totnum:5;
uint64_t reserved_5_7:3;
uint64_t txnum:5;
uint64_t reserved_13_15:3;
uint64_t leavecs:1;
uint64_t reserved_17_19:3;
uint64_t csid:2;
uint64_t reserved_22_63:42;
#endif
} s;
struct cvmx_mpi_tx_cn30xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_17_63:47;
uint64_t leavecs:1;
uint64_t reserved_13_15:3;
uint64_t txnum:5;
uint64_t reserved_5_7:3;
uint64_t totnum:5;
#else
uint64_t totnum:5;
uint64_t reserved_5_7:3;
uint64_t txnum:5;
uint64_t reserved_13_15:3;
uint64_t leavecs:1;
uint64_t reserved_17_63:47;
#endif
} cn30xx;
struct cvmx_mpi_tx_cn30xx cn31xx;
struct cvmx_mpi_tx_cn30xx cn50xx;
struct cvmx_mpi_tx_cn61xx {
#ifdef __BIG_ENDIAN_BITFIELD
uint64_t reserved_21_63:43;
uint64_t csid:1;
uint64_t reserved_17_19:3;
uint64_t leavecs:1;
uint64_t reserved_13_15:3;
uint64_t txnum:5;
uint64_t reserved_5_7:3;
uint64_t totnum:5;
#else
uint64_t totnum:5;
uint64_t reserved_5_7:3;
uint64_t txnum:5;
uint64_t reserved_13_15:3;
uint64_t leavecs:1;
uint64_t reserved_17_19:3;
uint64_t csid:1;
uint64_t reserved_21_63:43;
#endif
} cn61xx;
struct cvmx_mpi_tx_s cn66xx;
struct cvmx_mpi_tx_cn61xx cnf71xx;
};
#endif /* __SPI_CAVIUM_H */
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