diff options
Diffstat (limited to 'arch/arm/mach-tegra')
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/tegra124/xusb-padctl.c | 346 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/xusb-padctl-common.c | 305 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/xusb-padctl-common.h | 103 |
4 files changed, 414 insertions, 341 deletions
diff --git a/arch/arm/mach-tegra/tegra124/Makefile b/arch/arm/mach-tegra/tegra124/Makefile index f577f45..c00de61 100644 --- a/arch/arm/mach-tegra/tegra124/Makefile +++ b/arch/arm/mach-tegra/tegra124/Makefile @@ -11,6 +11,7 @@ obj-y += clock.o obj-y += funcmux.o obj-y += pinmux.o obj-y += xusb-padctl.o +obj-y += ../xusb-padctl-common.o ifndef CONFIG_SPL_BUILD obj-$(CONFIG_ARMV7_NONSEC) += psci.o diff --git a/arch/arm/mach-tegra/tegra124/xusb-padctl.c b/arch/arm/mach-tegra/tegra124/xusb-padctl.c index ce857b8..b3715d8 100644 --- a/arch/arm/mach-tegra/tegra124/xusb-padctl.c +++ b/arch/arm/mach-tegra/tegra124/xusb-padctl.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. + * Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved. * * SPDX-License-Identifier: GPL-2.0 */ @@ -11,6 +11,8 @@ #include <fdtdec.h> #include <malloc.h> +#include "../xusb-padctl-common.h" + #include <asm/io.h> #include <asm/arch/clock.h> @@ -83,18 +85,6 @@ static const unsigned int tegra124_pci_functions[] = { TEGRA124_FUNC_RSVD, }; -struct tegra_xusb_padctl_lane { - const char *name; - - unsigned int offset; - unsigned int shift; - unsigned int mask; - unsigned int iddq; - - const unsigned int *funcs; - unsigned int num_funcs; -}; - #define TEGRA124_LANE(_name, _offset, _shift, _mask, _iddq, _funcs) \ { \ .name = _name, \ @@ -121,74 +111,6 @@ static const struct tegra_xusb_padctl_lane tegra124_lanes[] = { TEGRA124_LANE("sata-0", 0x134, 26, 0x3, 6, pci), }; -struct tegra_xusb_phy_ops { - int (*prepare)(struct tegra_xusb_phy *phy); - int (*enable)(struct tegra_xusb_phy *phy); - int (*disable)(struct tegra_xusb_phy *phy); - int (*unprepare)(struct tegra_xusb_phy *phy); -}; - -struct tegra_xusb_phy { - const struct tegra_xusb_phy_ops *ops; - - struct tegra_xusb_padctl *padctl; -}; - -struct tegra_xusb_padctl_pin { - const struct tegra_xusb_padctl_lane *lane; - - unsigned int func; - int iddq; -}; - -#define MAX_GROUPS 3 -#define MAX_PINS 6 - -struct tegra_xusb_padctl_group { - const char *name; - - const char *pins[MAX_PINS]; - unsigned int num_pins; - - const char *func; - int iddq; -}; - -struct tegra_xusb_padctl_config { - const char *name; - - struct tegra_xusb_padctl_group groups[MAX_GROUPS]; - unsigned int num_groups; -}; - -struct tegra_xusb_padctl { - struct fdt_resource regs; - - unsigned int enable; - - struct tegra_xusb_phy phys[2]; - - const struct tegra_xusb_padctl_lane *lanes; - unsigned int num_lanes; - - const char *const *functions; - unsigned int num_functions; - - struct tegra_xusb_padctl_config config; -}; - -static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl, - unsigned long offset) -{ - return readl(padctl->regs.start + offset); -} - -static inline void padctl_writel(struct tegra_xusb_padctl *padctl, - u32 value, unsigned long offset) -{ - writel(value, padctl->regs.start + offset); -} - static int tegra_xusb_padctl_enable(struct tegra_xusb_padctl *padctl) { u32 value; @@ -380,7 +302,7 @@ static const struct tegra_xusb_phy_ops sata_phy_ops = { .unprepare = phy_unprepare, }; -static struct tegra_xusb_padctl *padctl = &(struct tegra_xusb_padctl) { +struct tegra_xusb_padctl *padctl = &(struct tegra_xusb_padctl) { .phys = { [0] = { .ops = &pcie_phy_ops, @@ -391,214 +313,7 @@ static struct tegra_xusb_padctl *padctl = &(struct tegra_xusb_padctl) { }, }; -static const struct tegra_xusb_padctl_lane * -tegra_xusb_padctl_find_lane(struct tegra_xusb_padctl *padctl, const char *name) -{ - unsigned int i; - - for (i = 0; i < padctl->num_lanes; i++) - if (strcmp(name, padctl->lanes[i].name) == 0) - return &padctl->lanes[i]; - - return NULL; -} - -static int -tegra_xusb_padctl_group_parse_dt(struct tegra_xusb_padctl *padctl, - struct tegra_xusb_padctl_group *group, - const void *fdt, int node) -{ - unsigned int i; - int len, err; - - group->name = fdt_get_name(fdt, node, &len); - - len = fdt_count_strings(fdt, node, "nvidia,lanes"); - if (len < 0) { - error("failed to parse \"nvidia,lanes\" property"); - return -EINVAL; - } - - group->num_pins = len; - - for (i = 0; i < group->num_pins; i++) { - err = fdt_get_string_index(fdt, node, "nvidia,lanes", i, - &group->pins[i]); - if (err < 0) { - error("failed to read string from \"nvidia,lanes\" property"); - return -EINVAL; - } - } - - group->num_pins = len; - - err = fdt_get_string(fdt, node, "nvidia,function", &group->func); - if (err < 0) { - error("failed to parse \"nvidia,func\" property"); - return -EINVAL; - } - - group->iddq = fdtdec_get_int(fdt, node, "nvidia,iddq", -1); - - return 0; -} - -static int tegra_xusb_padctl_find_function(struct tegra_xusb_padctl *padctl, - const char *name) -{ - unsigned int i; - - for (i = 0; i < padctl->num_functions; i++) - if (strcmp(name, padctl->functions[i]) == 0) - return i; - - return -ENOENT; -} - -static int -tegra_xusb_padctl_lane_find_function(struct tegra_xusb_padctl *padctl, - const struct tegra_xusb_padctl_lane *lane, - const char *name) -{ - unsigned int i; - int func; - - func = tegra_xusb_padctl_find_function(padctl, name); - if (func < 0) - return func; - - for (i = 0; i < lane->num_funcs; i++) - if (lane->funcs[i] == func) - return i; - - return -ENOENT; -} - -static int -tegra_xusb_padctl_group_apply(struct tegra_xusb_padctl *padctl, - const struct tegra_xusb_padctl_group *group) -{ - unsigned int i; - - for (i = 0; i < group->num_pins; i++) { - const struct tegra_xusb_padctl_lane *lane; - unsigned int func; - u32 value; - - lane = tegra_xusb_padctl_find_lane(padctl, group->pins[i]); - if (!lane) { - error("no lane for pin %s", group->pins[i]); - continue; - } - - func = tegra_xusb_padctl_lane_find_function(padctl, lane, - group->func); - if (func < 0) { - error("function %s invalid for lane %s: %d", - group->func, lane->name, func); - continue; - } - - value = padctl_readl(padctl, lane->offset); - - /* set pin function */ - value &= ~(lane->mask << lane->shift); - value |= func << lane->shift; - - /* - * Set IDDQ if supported on the lane and specified in the - * configuration. - */ - if (lane->iddq > 0 && group->iddq >= 0) { - if (group->iddq != 0) - value &= ~(1 << lane->iddq); - else - value |= 1 << lane->iddq; - } - - padctl_writel(padctl, value, lane->offset); - } - - return 0; -} - -static int -tegra_xusb_padctl_config_apply(struct tegra_xusb_padctl *padctl, - struct tegra_xusb_padctl_config *config) -{ - unsigned int i; - - for (i = 0; i < config->num_groups; i++) { - const struct tegra_xusb_padctl_group *group; - int err; - - group = &config->groups[i]; - - err = tegra_xusb_padctl_group_apply(padctl, group); - if (err < 0) { - error("failed to apply group %s: %d", group->name, err); - continue; - } - } - - return 0; -} - -static int -tegra_xusb_padctl_config_parse_dt(struct tegra_xusb_padctl *padctl, - struct tegra_xusb_padctl_config *config, - const void *fdt, int node) -{ - int subnode; - - config->name = fdt_get_name(fdt, node, NULL); - - fdt_for_each_subnode(fdt, subnode, node) { - struct tegra_xusb_padctl_group *group; - int err; - - group = &config->groups[config->num_groups]; - - err = tegra_xusb_padctl_group_parse_dt(padctl, group, fdt, - subnode); - if (err < 0) { - error("failed to parse group %s", group->name); - return err; - } - - config->num_groups++; - } - - return 0; -} - -static int tegra_xusb_padctl_parse_dt(struct tegra_xusb_padctl *padctl, - const void *fdt, int node) -{ - int subnode, err; - - err = fdt_get_resource(fdt, node, "reg", 0, &padctl->regs); - if (err < 0) { - error("registers not found"); - return err; - } - - fdt_for_each_subnode(fdt, subnode, node) { - struct tegra_xusb_padctl_config *config = &padctl->config; - - err = tegra_xusb_padctl_config_parse_dt(padctl, config, fdt, - subnode); - if (err < 0) { - error("failed to parse entry %s: %d", config->name, - err); - continue; - } - } - - return 0; -} - -static int process_nodes(const void *fdt, int nodes[], unsigned int count) +int process_nodes(const void *fdt, int nodes[], unsigned int count) { unsigned int i; @@ -648,57 +363,6 @@ static int process_nodes(const void *fdt, int nodes[], unsigned int count) return 0; } -struct tegra_xusb_phy *tegra_xusb_phy_get(unsigned int type) -{ - struct tegra_xusb_phy *phy = NULL; - - switch (type) { - case TEGRA_XUSB_PADCTL_PCIE: - phy = &padctl->phys[0]; - phy->padctl = padctl; - break; - - case TEGRA_XUSB_PADCTL_SATA: - phy = &padctl->phys[1]; - phy->padctl = padctl; - break; - } - - return phy; -} - -int tegra_xusb_phy_prepare(struct tegra_xusb_phy *phy) -{ - if (phy && phy->ops && phy->ops->prepare) - return phy->ops->prepare(phy); - - return phy ? -ENOSYS : -EINVAL; -} - -int tegra_xusb_phy_enable(struct tegra_xusb_phy *phy) -{ - if (phy && phy->ops && phy->ops->enable) - return phy->ops->enable(phy); - - return phy ? -ENOSYS : -EINVAL; -} - -int tegra_xusb_phy_disable(struct tegra_xusb_phy *phy) -{ - if (phy && phy->ops && phy->ops->disable) - return phy->ops->disable(phy); - - return phy ? -ENOSYS : -EINVAL; -} - -int tegra_xusb_phy_unprepare(struct tegra_xusb_phy *phy) -{ - if (phy && phy->ops && phy->ops->unprepare) - return phy->ops->unprepare(phy); - - return phy ? -ENOSYS : -EINVAL; -} - void tegra_xusb_padctl_init(const void *fdt) { int count, nodes[1]; diff --git a/arch/arm/mach-tegra/xusb-padctl-common.c b/arch/arm/mach-tegra/xusb-padctl-common.c new file mode 100644 index 0000000..18ad7bf --- /dev/null +++ b/arch/arm/mach-tegra/xusb-padctl-common.c @@ -0,0 +1,305 @@ +/* + * Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#define pr_fmt(fmt) "tegra-xusb-padctl: " fmt + +#include <common.h> +#include <errno.h> + +#include "xusb-padctl-common.h" + +#include <asm/arch/clock.h> + +int tegra_xusb_phy_prepare(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->prepare) + return phy->ops->prepare(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +int tegra_xusb_phy_enable(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->enable) + return phy->ops->enable(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +int tegra_xusb_phy_disable(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->disable) + return phy->ops->disable(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +int tegra_xusb_phy_unprepare(struct tegra_xusb_phy *phy) +{ + if (phy && phy->ops && phy->ops->unprepare) + return phy->ops->unprepare(phy); + + return phy ? -ENOSYS : -EINVAL; +} + +struct tegra_xusb_phy *tegra_xusb_phy_get(unsigned int type) +{ + struct tegra_xusb_phy *phy; + int i; + + for (i = 0; i < padctl.socdata->num_phys; i++) { + phy = &padctl.socdata->phys[i]; + if (phy->type != type) + continue; + return phy; + } + + return NULL; +} + +static const struct tegra_xusb_padctl_lane * +tegra_xusb_padctl_find_lane(struct tegra_xusb_padctl *padctl, const char *name) +{ + unsigned int i; + + for (i = 0; i < padctl->socdata->num_lanes; i++) + if (strcmp(name, padctl->socdata->lanes[i].name) == 0) + return &padctl->socdata->lanes[i]; + + return NULL; +} + +static int +tegra_xusb_padctl_group_parse_dt(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_group *group, + const void *fdt, int node) +{ + unsigned int i; + int len, err; + + group->name = fdt_get_name(fdt, node, &len); + + len = fdt_count_strings(fdt, node, "nvidia,lanes"); + if (len < 0) { + error("failed to parse \"nvidia,lanes\" property"); + return -EINVAL; + } + + group->num_pins = len; + + for (i = 0; i < group->num_pins; i++) { + err = fdt_get_string_index(fdt, node, "nvidia,lanes", i, + &group->pins[i]); + if (err < 0) { + error("failed to read string from \"nvidia,lanes\" property"); + return -EINVAL; + } + } + + group->num_pins = len; + + err = fdt_get_string(fdt, node, "nvidia,function", &group->func); + if (err < 0) { + error("failed to parse \"nvidia,func\" property"); + return -EINVAL; + } + + group->iddq = fdtdec_get_int(fdt, node, "nvidia,iddq", -1); + + return 0; +} + +static int tegra_xusb_padctl_find_function(struct tegra_xusb_padctl *padctl, + const char *name) +{ + unsigned int i; + + for (i = 0; i < padctl->socdata->num_functions; i++) + if (strcmp(name, padctl->socdata->functions[i]) == 0) + return i; + + return -ENOENT; +} + +static int +tegra_xusb_padctl_lane_find_function(struct tegra_xusb_padctl *padctl, + const struct tegra_xusb_padctl_lane *lane, + const char *name) +{ + unsigned int i; + int func; + + func = tegra_xusb_padctl_find_function(padctl, name); + if (func < 0) + return func; + + for (i = 0; i < lane->num_funcs; i++) + if (lane->funcs[i] == func) + return i; + + return -ENOENT; +} + +static int +tegra_xusb_padctl_group_apply(struct tegra_xusb_padctl *padctl, + const struct tegra_xusb_padctl_group *group) +{ + unsigned int i; + + for (i = 0; i < group->num_pins; i++) { + const struct tegra_xusb_padctl_lane *lane; + unsigned int func; + u32 value; + + lane = tegra_xusb_padctl_find_lane(padctl, group->pins[i]); + if (!lane) { + error("no lane for pin %s", group->pins[i]); + continue; + } + + func = tegra_xusb_padctl_lane_find_function(padctl, lane, + group->func); + if (func < 0) { + error("function %s invalid for lane %s: %d", + group->func, lane->name, func); + continue; + } + + value = padctl_readl(padctl, lane->offset); + + /* set pin function */ + value &= ~(lane->mask << lane->shift); + value |= func << lane->shift; + + /* + * Set IDDQ if supported on the lane and specified in the + * configuration. + */ + if (lane->iddq > 0 && group->iddq >= 0) { + if (group->iddq != 0) + value &= ~(1 << lane->iddq); + else + value |= 1 << lane->iddq; + } + + padctl_writel(padctl, value, lane->offset); + } + + return 0; +} + +static int +tegra_xusb_padctl_config_apply(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_config *config) +{ + unsigned int i; + + for (i = 0; i < config->num_groups; i++) { + const struct tegra_xusb_padctl_group *group; + int err; + + group = &config->groups[i]; + + err = tegra_xusb_padctl_group_apply(padctl, group); + if (err < 0) { + error("failed to apply group %s: %d", + group->name, err); + continue; + } + } + + return 0; +} + +static int +tegra_xusb_padctl_config_parse_dt(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_config *config, + const void *fdt, int node) +{ + int subnode; + + config->name = fdt_get_name(fdt, node, NULL); + + fdt_for_each_subnode(fdt, subnode, node) { + struct tegra_xusb_padctl_group *group; + int err; + + group = &config->groups[config->num_groups]; + + err = tegra_xusb_padctl_group_parse_dt(padctl, group, fdt, + subnode); + if (err < 0) { + error("failed to parse group %s", group->name); + return err; + } + + config->num_groups++; + } + + return 0; +} + +static int tegra_xusb_padctl_parse_dt(struct tegra_xusb_padctl *padctl, + const void *fdt, int node) +{ + int subnode, err; + + err = fdt_get_resource(fdt, node, "reg", 0, &padctl->regs); + if (err < 0) { + error("registers not found"); + return err; + } + + fdt_for_each_subnode(fdt, subnode, node) { + struct tegra_xusb_padctl_config *config = &padctl->config; + + err = tegra_xusb_padctl_config_parse_dt(padctl, config, fdt, + subnode); + if (err < 0) { + error("failed to parse entry %s: %d", + config->name, err); + continue; + } + } + + return 0; +} + +struct tegra_xusb_padctl padctl; + +int tegra_xusb_process_nodes(const void *fdt, int nodes[], unsigned int count, + const struct tegra_xusb_padctl_soc *socdata) +{ + unsigned int i; + int err; + + for (i = 0; i < count; i++) { + if (!fdtdec_get_is_enabled(fdt, nodes[i])) + continue; + + padctl.socdata = socdata; + + err = tegra_xusb_padctl_parse_dt(&padctl, fdt, nodes[i]); + if (err < 0) { + error("failed to parse DT: %d", err); + continue; + } + + /* deassert XUSB padctl reset */ + reset_set_enable(PERIPH_ID_XUSB_PADCTL, 0); + + err = tegra_xusb_padctl_config_apply(&padctl, &padctl.config); + if (err < 0) { + error("failed to apply pinmux: %d", err); + continue; + } + + /* only a single instance is supported */ + break; + } + + return 0; +} diff --git a/arch/arm/mach-tegra/xusb-padctl-common.h b/arch/arm/mach-tegra/xusb-padctl-common.h new file mode 100644 index 0000000..a65b754 --- /dev/null +++ b/arch/arm/mach-tegra/xusb-padctl-common.h @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2014-2015, NVIDIA CORPORATION. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef _TEGRA_XUSB_PADCTL_COMMON_H_ +#define _TEGRA_XUSB_PADCTL_COMMON_H_ + +#include <common.h> +#include <fdtdec.h> + +#include <asm/io.h> +#include <asm/arch-tegra/xusb-padctl.h> + +struct tegra_xusb_padctl_lane { + const char *name; + + unsigned int offset; + unsigned int shift; + unsigned int mask; + unsigned int iddq; + + const unsigned int *funcs; + unsigned int num_funcs; +}; + +struct tegra_xusb_phy_ops { + int (*prepare)(struct tegra_xusb_phy *phy); + int (*enable)(struct tegra_xusb_phy *phy); + int (*disable)(struct tegra_xusb_phy *phy); + int (*unprepare)(struct tegra_xusb_phy *phy); +}; + +struct tegra_xusb_phy { + const struct tegra_xusb_phy_ops *ops; + + struct tegra_xusb_padctl *padctl; +}; + +struct tegra_xusb_padctl_pin { + const struct tegra_xusb_padctl_lane *lane; + + unsigned int func; + int iddq; +}; + +#define MAX_GROUPS 3 +#define MAX_PINS 6 + +struct tegra_xusb_padctl_group { + const char *name; + + const char *pins[MAX_PINS]; + unsigned int num_pins; + + const char *func; + int iddq; +}; + +struct tegra_xusb_padctl_config { + const char *name; + + struct tegra_xusb_padctl_group groups[MAX_GROUPS]; + unsigned int num_groups; +}; + +struct tegra_xusb_padctl { + struct fdt_resource regs; + + unsigned int enable; + + struct tegra_xusb_phy phys[2]; + + const struct tegra_xusb_padctl_lane *lanes; + unsigned int num_lanes; + + const char *const *functions; + unsigned int num_functions; + + struct tegra_xusb_padctl_config config; +}; + +static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl, + unsigned long offset) +{ + return readl(padctl->regs.start + offset); +} + +static inline void padctl_writel(struct tegra_xusb_padctl *padctl, + u32 value, unsigned long offset) +{ + writel(value, padctl->regs.start + offset); +} + +extern struct tegra_xusb_padctl *padctl; + +int tegra_xusb_padctl_parse_dt(struct tegra_xusb_padctl *padctl, + const void *fdt, int node); +int tegra_xusb_padctl_config_apply(struct tegra_xusb_padctl *padctl, + struct tegra_xusb_padctl_config *config); + +#endif |