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cbe7706ab8
trini: Drop local memset() from examples/standalone/mem_to_mem_idma2intr.c Signed-off-by: Tom Rini <trini@konsulko.com>
131 lines
2.8 KiB
C
131 lines
2.8 KiB
C
/*
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* Copyright 2014 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/arch/fsl_serdes.h>
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#include <asm/arch/immap_ls102xa.h>
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#include <linux/errno.h>
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#include <asm/io.h>
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#include "fsl_ls1_serdes.h"
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#ifdef CONFIG_SYS_FSL_SRDS_1
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static u64 serdes1_prtcl_map;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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static u64 serdes2_prtcl_map;
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#endif
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int is_serdes_configured(enum srds_prtcl device)
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{
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u64 ret = 0;
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#ifdef CONFIG_SYS_FSL_SRDS_1
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if (!(serdes1_prtcl_map & (1ULL << NONE)))
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fsl_serdes_init();
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ret |= (1ULL << device) & serdes1_prtcl_map;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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if (!(serdes2_prtcl_map & (1ULL << NONE)))
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fsl_serdes_init();
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ret |= (1ULL << device) & serdes2_prtcl_map;
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#endif
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return !!ret;
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}
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int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u32 cfg = in_be32(&gur->rcwsr[4]);
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int i;
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switch (sd) {
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#ifdef CONFIG_SYS_FSL_SRDS_1
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case FSL_SRDS_1:
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cfg &= RCWSR4_SRDS1_PRTCL_MASK;
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cfg >>= RCWSR4_SRDS1_PRTCL_SHIFT;
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break;
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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case FSL_SRDS_2:
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cfg &= RCWSR4_SRDS2_PRTCL_MASK;
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cfg >>= RCWSR4_SRDS2_PRTCL_SHIFT;
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break;
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#endif
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default:
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printf("invalid SerDes%d\n", sd);
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break;
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}
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/* Is serdes enabled at all? */
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if (unlikely(cfg == 0))
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return -ENODEV;
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for (i = 0; i < SRDS_MAX_LANES; i++) {
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if (serdes_get_prtcl(sd, cfg, i) == device)
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return i;
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}
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return -ENODEV;
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}
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u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
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{
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struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
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u64 serdes_prtcl_map = 0;
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u32 cfg;
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int lane;
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cfg = in_be32(&gur->rcwsr[4]) & sd_prctl_mask;
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cfg >>= sd_prctl_shift;
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printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
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if (!is_serdes_prtcl_valid(sd, cfg))
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printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
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for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
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enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
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serdes_prtcl_map |= (1ULL << lane_prtcl);
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}
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/* Set the first bit to indicate serdes has been initialized */
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serdes_prtcl_map |= (1ULL << NONE);
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return serdes_prtcl_map;
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}
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void fsl_serdes_init(void)
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{
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#ifdef CONFIG_SYS_FSL_SRDS_1
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if (!(serdes1_prtcl_map & (1ULL << NONE)))
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serdes1_prtcl_map = serdes_init(FSL_SRDS_1,
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CONFIG_SYS_FSL_SERDES_ADDR,
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RCWSR4_SRDS1_PRTCL_MASK,
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RCWSR4_SRDS1_PRTCL_SHIFT);
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#endif
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#ifdef CONFIG_SYS_FSL_SRDS_2
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if (!(serdes2_prtcl_map & (1ULL << NONE)))
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serdes2_prtcl_map = serdes_init(FSL_SRDS_2,
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CONFIG_SYS_FSL_SERDES_ADDR +
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FSL_SRDS_2 * 0x1000,
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RCWSR4_SRDS2_PRTCL_MASK,
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RCWSR4_SRDS2_PRTCL_SHIFT);
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#endif
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}
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const char *serdes_clock_to_string(u32 clock)
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{
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switch (clock) {
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case SRDS_PLLCR0_RFCK_SEL_100:
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return "100";
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case SRDS_PLLCR0_RFCK_SEL_125:
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return "125";
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default:
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return "100";
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}
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}
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