diff options
| author | Marek Vasut <[email protected]> | 2013-01-11 03:19:02 +0000 |
|---|---|---|
| committer | Stefano Babic <[email protected]> | 2013-01-21 12:05:19 +0100 |
| commit | 14e26bcfa700b507a805eb30c72e3b6a1ba19d7f (patch) | |
| tree | 07b2611205bc7414a74b4cb0c7650a7c4853e13a /arch | |
| parent | 59b6defa2b2db1b51f772e8ef6af2617463c8f80 (diff) | |
mxs: ssp: Pull out the SSP bus to regs conversion
Create function which converts SSP bus number to SSP register pointer.
This functionality is reimplemented multiple times in the code, thus
make one common implementation. Moreover, make it a switch(), since the
SSP ports are not mapped in such nice linear fashion on MX23, therefore
having it a switch will simplify things there.
Signed-off-by: Marek Vasut <[email protected]>
Cc: Andy Fleming <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Stefano Babic <[email protected]>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mxs/clock.c | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mxs/regs-ssp.h | 16 |
2 files changed, 17 insertions, 1 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/clock.c b/arch/arm/cpu/arm926ejs/mxs/clock.c index 4ff19c37efe..5d6e12a28da 100644 --- a/arch/arm/cpu/arm926ejs/mxs/clock.c +++ b/arch/arm/cpu/arm926ejs/mxs/clock.c @@ -278,7 +278,7 @@ void mx28_set_ssp_busclock(unsigned int bus, uint32_t freq) uint32_t reg; uint32_t divide, rate, tgtclk; - ssp_regs = (struct mxs_ssp_regs *)(MXS_SSP0_BASE + (bus * 0x2000)); + ssp_regs = mxs_ssp_regs_by_bus(bus); /* * SSP bit rate = SSPCLK / (CLOCK_DIVIDE * (1 + CLOCK_RATE)), diff --git a/arch/arm/include/asm/arch-mxs/regs-ssp.h b/arch/arm/include/asm/arch-mxs/regs-ssp.h index cf52a28c3be..4a75029221b 100644 --- a/arch/arm/include/asm/arch-mxs/regs-ssp.h +++ b/arch/arm/include/asm/arch-mxs/regs-ssp.h @@ -50,6 +50,22 @@ struct mxs_ssp_regs { mxs_reg_32(hw_ssp_debug) mxs_reg_32(hw_ssp_version) }; + +static inline struct mxs_ssp_regs *mxs_ssp_regs_by_bus(unsigned int port) +{ + switch (port) { + case 0: + return (struct mxs_ssp_regs *)MXS_SSP0_BASE; + case 1: + return (struct mxs_ssp_regs *)MXS_SSP1_BASE; + case 2: + return (struct mxs_ssp_regs *)MXS_SSP2_BASE; + case 3: + return (struct mxs_ssp_regs *)MXS_SSP3_BASE; + default: + return NULL; + } +} #endif #define SSP_CTRL0_SFTRST (1 << 31) |