diff options
Diffstat (limited to 'arch/arm/cpu/tegra20-common')
| -rw-r--r-- | arch/arm/cpu/tegra20-common/pinmux.c | 124 |
1 files changed, 3 insertions, 121 deletions
diff --git a/arch/arm/cpu/tegra20-common/pinmux.c b/arch/arm/cpu/tegra20-common/pinmux.c index 14467f01f5..9e34c8bec0 100644 --- a/arch/arm/cpu/tegra20-common/pinmux.c +++ b/arch/arm/cpu/tegra20-common/pinmux.c @@ -8,10 +8,8 @@ #include <common.h> #include <asm/io.h> -#include <asm/arch/tegra.h> #include <asm/arch/pinmux.h> - /* * This defines the order of the pin mux control bits in the registers. For * some reason there is no correspendence between the tristate, pin mux and @@ -256,32 +254,6 @@ enum pmux_pullid { PUCTL_NONE = -1 }; -struct tegra_pingroup_desc { - const char *name; - enum pmux_func funcs[4]; - enum pmux_ctlid ctl_id; - enum pmux_pullid pull_id; -}; - - -/* Converts a pmux_pingrp number to a tristate register: 0=A, 1=B, 2=C, 3=D */ -#define TRISTATE_REG(pmux_pingrp) ((pmux_pingrp) >> 5) - -/* Mask value for a tristate (within TRISTATE_REG(id)) */ -#define TRISTATE_MASK(pmux_pingrp) (1 << ((pmux_pingrp) & 0x1f)) - -/* Converts a PUCTL id to a pull register: 0=A, 1=B...4=E */ -#define PULL_REG(pmux_pullid) ((pmux_pullid) >> 4) - -/* Converts a PUCTL id to a shift position */ -#define PULL_SHIFT(pmux_pullid) ((pmux_pullid << 1) & 0x1f) - -/* Converts a MUXCTL id to a ctl register: 0=A, 1=B...6=G */ -#define MUXCTL_REG(pmux_ctlid) ((pmux_ctlid) >> 4) - -/* Converts a MUXCTL id to a shift position */ -#define MUXCTL_SHIFT(pmux_ctlid) ((pmux_ctlid << 1) & 0x1f) - /* Convenient macro for defining pin group properties */ #define PINALL(pg_name, vdd, f0, f1, f2, f3, f_safe, mux, pupd) \ { \ @@ -309,9 +281,9 @@ struct tegra_pingroup_desc { #define PIN_RESERVED \ PIN(NONE, NONE, RSVD, RSVD, RSVD, RSVD, RSVD) -#define PMUX_FUNC_RSVD ((enum pmux_func)-1) +#define PMUX_FUNC_RSVD PMUX_FUNC_RSVD1 -const struct tegra_pingroup_desc tegra_soc_pingroups[PINGRP_COUNT] = { +static const struct tegra_pingroup_desc tegra20_pingroups[] = { PIN(ATA, NAND, IDE, NAND, GMI, RSVD, IDE), PIN(ATB, NAND, IDE, NAND, GMI, SDIO4, IDE), PIN(ATC, NAND, IDE, NAND, GMI, SDIO4, IDE), @@ -462,94 +434,4 @@ const struct tegra_pingroup_desc tegra_soc_pingroups[PINGRP_COUNT] = { PINALL(XM2D, DDR, RSVD, RSVD, RSVD, RSVD, RSVD, MUXCTL_NONE, PUCTL_NONE), }; - -void pinmux_set_tristate(enum pmux_pingrp pin, int enable) -{ - struct pmux_tri_ctlr *pmt = - (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE; - u32 *tri = &pmt->pmt_tri[TRISTATE_REG(pin)]; - u32 reg; - - reg = readl(tri); - if (enable) - reg |= TRISTATE_MASK(pin); - else - reg &= ~TRISTATE_MASK(pin); - writel(reg, tri); -} - -void pinmux_tristate_enable(enum pmux_pingrp pin) -{ - pinmux_set_tristate(pin, 1); -} - -void pinmux_tristate_disable(enum pmux_pingrp pin) -{ - pinmux_set_tristate(pin, 0); -} - -void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd) -{ - struct pmux_tri_ctlr *pmt = - (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE; - enum pmux_pullid pull_id = tegra_soc_pingroups[pin].pull_id; - u32 *pull = &pmt->pmt_pull[PULL_REG(pull_id)]; - u32 mask_bit; - u32 reg; - mask_bit = PULL_SHIFT(pull_id); - - reg = readl(pull); - reg &= ~(0x3 << mask_bit); - reg |= pupd << mask_bit; - writel(reg, pull); -} - -void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func) -{ - struct pmux_tri_ctlr *pmt = - (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE; - enum pmux_ctlid mux_id = tegra_soc_pingroups[pin].ctl_id; - u32 *muxctl = &pmt->pmt_ctl[MUXCTL_REG(mux_id)]; - u32 mask_bit; - int i, mux = -1; - u32 reg; - - assert(pmux_func_isvalid(func)); - - /* Handle special values */ - if (func >= PMUX_FUNC_RSVD1) { - mux = (func - PMUX_FUNC_RSVD1) & 0x3; - } else { - /* Search for the appropriate function */ - for (i = 0; i < 4; i++) { - if (tegra_soc_pingroups[pin].funcs[i] == func) { - mux = i; - break; - } - } - } - assert(mux != -1); - - mask_bit = MUXCTL_SHIFT(mux_id); - reg = readl(muxctl); - reg &= ~(0x3 << mask_bit); - reg |= mux << mask_bit; - writel(reg, muxctl); -} - -void pinmux_config_pingroup(const struct pingroup_config *config) -{ - enum pmux_pingrp pin = config->pingroup; - - pinmux_set_func(pin, config->func); - pinmux_set_pullupdown(pin, config->pull); - pinmux_set_tristate(pin, config->tristate); -} - -void pinmux_config_table(const struct pingroup_config *config, int len) -{ - int i; - - for (i = 0; i < len; i++) - pinmux_config_pingroup(&config[i]); -} +const struct tegra_pingroup_desc *tegra_soc_pingroups = tegra20_pingroups; |