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| author | Kumar Gala <galak@kernel.crashing.org> | 2010-07-11 12:41:46 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-07-21 00:40:20 -0500 |
| commit | 47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac (patch) | |
| tree | 31dba9a9d0ba2c1b0149f5fab00c66f59326027c /arch | |
| parent | af0250652a775799da656f74719bdefb45fda7d5 (diff) | |
| download | u-boot-imx-47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac.zip u-boot-imx-47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac.tar.gz u-boot-imx-47ec10c5975f0ce8f4a748c7b76c45c0fb60c0ac.tar.bz2 | |
powerpc/85xx: Rework P1022 SERDES is_serdes_configured support
Move serdes init until after we are in ram so we can keep track of a
global static protocal map for the particular serdes config we are in.
This makes is_serdes_configured() much simplier and not constantly
reading registers to determine if a given device is enabled based on the
protocol.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/p1022_serdes.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/p1022_serdes.c b/arch/powerpc/cpu/mpc85xx/p1022_serdes.c index 6b0fbf2..e4c9c22 100644 --- a/arch/powerpc/cpu/mpc85xx/p1022_serdes.c +++ b/arch/powerpc/cpu/mpc85xx/p1022_serdes.c @@ -17,6 +17,8 @@ #define SRDS1_MAX_LANES 4 #define SRDS2_MAX_LANES 2 +static u32 serdes1_prtcl_map, serdes2_prtcl_map; + static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = { [0x00] = {NONE, NONE, NONE, NONE}, [0x01] = {NONE, NONE, NONE, NONE}, @@ -73,26 +75,40 @@ static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { int is_serdes_configured(enum srds_prtcl device) { + int ret = (1 << device) & serdes1_prtcl_map; + + if (ret) + return ret; + + return (1 << device) & serdes2_prtcl_map; +} + +void fsl_serdes_init(void) +{ ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; u32 pordevsr = in_be32(&gur->pordevsr); u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> MPC85xx_PORDEVSR_IO_SEL_SHIFT; - unsigned int i; + int lane; - debug("%s: dev = %d\n", __FUNCTION__, device); - debug("PORDEVSR[IO_SEL] = 0x%x\n", srds_cfg); + debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg); if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) { - printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds_cfg); - return 0; + printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); + return; + } + for (lane = 0; lane < SRDS1_MAX_LANES; lane++) { + enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane]; + serdes1_prtcl_map |= (1 << lane_prtcl); } - for (i = 0; i < SRDS1_MAX_LANES; i++) { - if (serdes1_cfg_tbl[srds_cfg][i] == device) - return 1; - if (serdes2_cfg_tbl[srds_cfg][i] == device) - return 1; + if (srds_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) { + printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); + return; } - return 0; + for (lane = 0; lane < SRDS2_MAX_LANES; lane++) { + enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane]; + serdes2_prtcl_map |= (1 << lane_prtcl); + } } |