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/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <linux/errno.h>
#include <asm/arch/fsl_serdes.h>
#include <asm/arch/soc.h>
#ifdef CONFIG_SYS_FSL_SRDS_1
static u8 serdes1_prtcl_map[SERDES_PRCTL_COUNT];
#endif
#ifdef CONFIG_SYS_FSL_SRDS_2
static u8 serdes2_prtcl_map[SERDES_PRCTL_COUNT];
#endif
int is_serdes_configured(enum srds_prtcl device)
{
int ret = 0;
#ifdef CONFIG_SYS_FSL_SRDS_1
ret |= serdes1_prtcl_map[device];
#endif
#ifdef CONFIG_SYS_FSL_SRDS_2
ret |= serdes2_prtcl_map[device];
#endif
return !!ret;
}
int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
u32 cfg = gur_in32(&gur->rcwsr[4]);
int i;
switch (sd) {
#ifdef CONFIG_SYS_FSL_SRDS_1
case FSL_SRDS_1:
cfg &= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
cfg >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
break;
#endif
#ifdef CONFIG_SYS_FSL_SRDS_2
case FSL_SRDS_2:
cfg &= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK;
cfg >>= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT;
break;
#endif
default:
printf("invalid SerDes%d\n", sd);
break;
}
/* Is serdes enabled at all? */
if (unlikely(cfg == 0))
return -ENODEV;
for (i = 0; i < SRDS_MAX_LANES; i++) {
if (serdes_get_prtcl(sd, cfg, i) == device)
return i;
}
return -ENODEV;
}
int get_serdes_protocol(void)
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
u32 cfg = gur_in32(&gur->rcwsr[4]) &
FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
cfg >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
return cfg;
}
const char *serdes_clock_to_string(u32 clock)
{
switch (clock) {
case SRDS_PLLCR0_RFCK_SEL_100:
return "100";
case SRDS_PLLCR0_RFCK_SEL_125:
return "125";
case SRDS_PLLCR0_RFCK_SEL_156_25:
return "156.25";
default:
return "100";
}
}
void serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift,
u8 serdes_prtcl_map[SERDES_PRCTL_COUNT])
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
u32 cfg;
int lane;
memset(serdes_prtcl_map, 0, sizeof(u8) * SERDES_PRCTL_COUNT);
cfg = gur_in32(&gur->rcwsr[4]) & sd_prctl_mask;
cfg >>= sd_prctl_shift;
printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg);
if (!is_serdes_prtcl_valid(sd, cfg))
printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
if (unlikely(lane_prtcl >= SERDES_PRCTL_COUNT))
debug("Unknown SerDes lane protocol %d\n", lane_prtcl);
else
serdes_prtcl_map[lane_prtcl] = 1;
}
}
void fsl_serdes_init(void)
{
#ifdef CONFIG_SYS_FSL_SRDS_1
serdes_init(FSL_SRDS_1,
CONFIG_SYS_FSL_SERDES_ADDR,
FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK,
FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT,
serdes1_prtcl_map);
#endif
#ifdef CONFIG_SYS_FSL_SRDS_2
serdes_init(FSL_SRDS_2,
CONFIG_SYS_FSL_SERDES_ADDR,
FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK,
FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT,
serdes2_prtcl_map);
#endif
}
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