--- /dev/null
+/*
+ * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/pinmux.h>
+
+/* return 1 if a pingrp is in range */
+#define pmux_pingrp_isvalid(pin) (((pin) >= 0) && ((pin) < PINGRP_COUNT))
+
+/* return 1 if a pmux_func is in range */
+#define pmux_func_isvalid(func) \
+ ((((func) >= 0) && ((func) < PMUX_FUNC_COUNT)) || \
+ (((func) >= PMUX_FUNC_RSVD1) && ((func) <= PMUX_FUNC_RSVD4)))
+
+/* return 1 if a pin_pupd_is in range */
+#define pmux_pin_pupd_isvalid(pupd) \
+ (((pupd) >= PMUX_PULL_NORMAL) && ((pupd) <= PMUX_PULL_UP))
+
+/* return 1 if a pin_tristate_is in range */
+#define pmux_pin_tristate_isvalid(tristate) \
+ (((tristate) >= PMUX_TRI_NORMAL) && ((tristate) <= PMUX_TRI_TRISTATE))
+
+#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
+/* return 1 if a pin_io_is in range */
+#define pmux_pin_io_isvalid(io) \
+ (((io) >= PMUX_PIN_OUTPUT) && ((io) <= PMUX_PIN_INPUT))
+
+/* return 1 if a pin_lock is in range */
+#define pmux_pin_lock_isvalid(lock) \
+ (((lock) >= PMUX_PIN_LOCK_DISABLE) && ((lock) <= PMUX_PIN_LOCK_ENABLE))
+
+/* return 1 if a pin_od is in range */
+#define pmux_pin_od_isvalid(od) \
+ (((od) >= PMUX_PIN_OD_DISABLE) && ((od) <= PMUX_PIN_OD_ENABLE))
+
+/* return 1 if a pin_ioreset_is in range */
+#define pmux_pin_ioreset_isvalid(ioreset) \
+ (((ioreset) >= PMUX_PIN_IO_RESET_DISABLE) && \
+ ((ioreset) <= PMUX_PIN_IO_RESET_ENABLE))
+
+#ifdef TEGRA_PMX_HAS_RCV_SEL
+/* return 1 if a pin_rcv_sel_is in range */
+#define pmux_pin_rcv_sel_isvalid(rcv_sel) \
+ (((rcv_sel) >= PMUX_PIN_RCV_SEL_NORMAL) && \
+ ((rcv_sel) <= PMUX_PIN_RCV_SEL_HIGH))
+#endif /* TEGRA_PMX_HAS_RCV_SEL */
+#endif /* TEGRA_PMX_HAS_PIN_IO_BIT_ETC */
+
+#define _R(offset) (u32 *)(NV_PA_APB_MISC_BASE + (offset))
+
+#if defined(CONFIG_TEGRA20)
+
+#define MUX_REG(grp) _R(0x80 + ((tegra_soc_pingroups[grp].ctl_id / 16) * 4))
+#define MUX_SHIFT(grp) ((tegra_soc_pingroups[grp].ctl_id % 16) * 2)
+
+#define PULL_REG(grp) _R(0xa0 + ((tegra_soc_pingroups[grp].pull_id / 16) * 4))
+#define PULL_SHIFT(grp) ((tegra_soc_pingroups[grp].pull_id % 16) * 2)
+
+#define TRI_REG(grp) _R(0x14 + (((grp) / 32) * 4))
+#define TRI_SHIFT(grp) ((grp) % 32)
+
+#else
+
+#define REG(pin) _R(0x3000 + ((pin) * 4))
+
+#define MUX_REG(pin) REG(pin)
+#define MUX_SHIFT(pin) 0
+
+#define PULL_REG(pin) REG(pin)
+#define PULL_SHIFT(pin) 2
+
+#define TRI_REG(pin) REG(pin)
+#define TRI_SHIFT(pin) 4
+
+#endif /* CONFIG_TEGRA20 */
+
+#define DRV_REG(group) _R(0x868 + ((group) * 4))
+
+#define IO_SHIFT 5
+#define OD_SHIFT 6
+#define LOCK_SHIFT 7
+#define IO_RESET_SHIFT 8
+#define RCV_SEL_SHIFT 9
+
+void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func)
+{
+ u32 *reg = MUX_REG(pin);
+ int i, mux = -1;
+ u32 val;
+
+ /* Error check on pin and func */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_func_isvalid(func));
+
+ if (func & PMUX_FUNC_RSVD1) {
+ mux = func & 3;
+ } 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);
+
+ val = readl(reg);
+ val &= ~(3 << MUX_SHIFT(pin));
+ val |= (mux << MUX_SHIFT(pin));
+ writel(val, reg);
+}
+
+void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd)
+{
+ u32 *reg = PULL_REG(pin);
+ u32 val;
+
+ /* Error check on pin and pupd */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_pupd_isvalid(pupd));
+
+ val = readl(reg);
+ val &= ~(3 << PULL_SHIFT(pin));
+ val |= (pupd << PULL_SHIFT(pin));
+ writel(val, reg);
+}
+
+void pinmux_set_tristate(enum pmux_pingrp pin, int tri)
+{
+ u32 *reg = TRI_REG(pin);
+ u32 val;
+
+ /* Error check on pin */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_tristate_isvalid(tri));
+
+ val = readl(reg);
+ if (tri == PMUX_TRI_TRISTATE)
+ val |= (1 << TRI_SHIFT(pin));
+ else
+ val &= ~(1 << TRI_SHIFT(pin));
+ writel(val, reg);
+}
+
+void pinmux_tristate_enable(enum pmux_pingrp pin)
+{
+ pinmux_set_tristate(pin, PMUX_TRI_TRISTATE);
+}
+
+void pinmux_tristate_disable(enum pmux_pingrp pin)
+{
+ pinmux_set_tristate(pin, PMUX_TRI_NORMAL);
+}
+
+#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
+void pinmux_set_io(enum pmux_pingrp pin, enum pmux_pin_io io)
+{
+ u32 *reg = REG(pin);
+ u32 val;
+
+ if (io == PMUX_PIN_NONE)
+ return;
+
+ /* Error check on pin and io */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_io_isvalid(io));
+
+ val = readl(reg);
+ if (io == PMUX_PIN_INPUT)
+ val |= (io & 1) << IO_SHIFT;
+ else
+ val &= ~(1 << IO_SHIFT);
+ writel(val, reg);
+}
+
+static void pinmux_set_lock(enum pmux_pingrp pin, enum pmux_pin_lock lock)
+{
+ u32 *reg = REG(pin);
+ u32 val;
+
+ if (lock == PMUX_PIN_LOCK_DEFAULT)
+ return;
+
+ /* Error check on pin and lock */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_lock_isvalid(lock));
+
+ val = readl(reg);
+ if (lock == PMUX_PIN_LOCK_ENABLE) {
+ val |= (1 << LOCK_SHIFT);
+ } else {
+ if (val & (1 << LOCK_SHIFT))
+ printf("%s: Cannot clear LOCK bit!\n", __func__);
+ val &= ~(1 << LOCK_SHIFT);
+ }
+ writel(val, reg);
+
+ return;
+}
+
+static void pinmux_set_od(enum pmux_pingrp pin, enum pmux_pin_od od)
+{
+ u32 *reg = REG(pin);
+ u32 val;
+
+ if (od == PMUX_PIN_OD_DEFAULT)
+ return;
+
+ /* Error check on pin and od */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_od_isvalid(od));
+
+ val = readl(reg);
+ if (od == PMUX_PIN_OD_ENABLE)
+ val |= (1 << OD_SHIFT);
+ else
+ val &= ~(1 << OD_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void pinmux_set_ioreset(enum pmux_pingrp pin,
+ enum pmux_pin_ioreset ioreset)
+{
+ u32 *reg = REG(pin);
+ u32 val;
+
+ if (ioreset == PMUX_PIN_IO_RESET_DEFAULT)
+ return;
+
+ /* Error check on pin and ioreset */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_ioreset_isvalid(ioreset));
+
+ val = readl(reg);
+ if (ioreset == PMUX_PIN_IO_RESET_ENABLE)
+ val |= (1 << IO_RESET_SHIFT);
+ else
+ val &= ~(1 << IO_RESET_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+#ifdef TEGRA_PMX_HAS_RCV_SEL
+static void pinmux_set_rcv_sel(enum pmux_pingrp pin,
+ enum pmux_pin_rcv_sel rcv_sel)
+{
+ u32 *reg = REG(pin);
+ u32 val;
+
+ if (rcv_sel == PMUX_PIN_RCV_SEL_DEFAULT)
+ return;
+
+ /* Error check on pin and rcv_sel */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_rcv_sel_isvalid(rcv_sel));
+
+ val = readl(reg);
+ if (rcv_sel == PMUX_PIN_RCV_SEL_HIGH)
+ val |= (1 << RCV_SEL_SHIFT);
+ else
+ val &= ~(1 << RCV_SEL_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+#endif /* TEGRA_PMX_HAS_RCV_SEL */
+#endif /* TEGRA_PMX_HAS_PIN_IO_BIT_ETC */
+
+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);
+#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
+ pinmux_set_io(pin, config->io);
+ pinmux_set_lock(pin, config->lock);
+ pinmux_set_od(pin, config->od);
+ pinmux_set_ioreset(pin, config->ioreset);
+#ifdef TEGRA_PMX_HAS_RCV_SEL
+ pinmux_set_rcv_sel(pin, config->rcv_sel);
+#endif
+#endif
+}
+
+void pinmux_config_table(const struct pingroup_config *config, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ pinmux_config_pingroup(&config[i]);
+}
+
+#ifdef TEGRA_PMX_HAS_PADGRPS
+
+#define pmux_padgrp_isvalid(pd) (((pd) >= 0) && ((pd) < PDRIVE_PINGROUP_COUNT))
+
+#define pmux_pad_slw_isvalid(slw) \
+ (((slw) >= PGRP_SLWF_MIN) && ((slw) <= PGRP_SLWF_MAX))
+
+#define pmux_pad_drv_isvalid(drv) \
+ (((drv) >= PGRP_DRVUP_MIN) && ((drv) <= PGRP_DRVUP_MAX))
+
+#define pmux_pad_lpmd_isvalid(lpm) \
+ (((lpm) >= PGRP_LPMD_X8) && ((lpm) <= PGRP_LPMD_X))
+
+#define pmux_pad_schmt_isvalid(schmt) \
+ (((schmt) >= PGRP_SCHMT_DISABLE) && ((schmt) <= PGRP_SCHMT_ENABLE))
+
+#define pmux_pad_hsm_isvalid(hsm) \
+ (((hsm) >= PGRP_HSM_DISABLE) && ((hsm) <= PGRP_HSM_ENABLE))
+
+#define HSM_SHIFT 2
+#define SCHMT_SHIFT 3
+#define LPMD_SHIFT 4
+#define LPMD_MASK (3 << LPMD_SHIFT)
+#define DRVDN_SHIFT 12
+#define DRVDN_MASK (0x7F << DRVDN_SHIFT)
+#define DRVUP_SHIFT 20
+#define DRVUP_MASK (0x7F << DRVUP_SHIFT)
+#define SLWR_SHIFT 28
+#define SLWR_MASK (3 << SLWR_SHIFT)
+#define SLWF_SHIFT 30
+#define SLWF_MASK (3 << SLWF_SHIFT)
+
+static void padgrp_set_drvup_slwf(enum pdrive_pingrp grp, int slwf)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (slwf == PGRP_SLWF_NONE)
+ return;
+
+ /* Error check on pad and slwf */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_slw_isvalid(slwf));
+
+ val = readl(reg);
+ val &= ~SLWF_MASK;
+ val |= (slwf << SLWF_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padgrp_set_drvdn_slwr(enum pdrive_pingrp grp, int slwr)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (slwr == PGRP_SLWR_NONE)
+ return;
+
+ /* Error check on pad and slwr */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_slw_isvalid(slwr));
+
+ val = readl(reg);
+ val &= ~SLWR_MASK;
+ val |= (slwr << SLWR_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padgrp_set_drvup(enum pdrive_pingrp grp, int drvup)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (drvup == PGRP_DRVUP_NONE)
+ return;
+
+ /* Error check on pad and drvup */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_drv_isvalid(drvup));
+
+ val = readl(reg);
+ val &= ~DRVUP_MASK;
+ val |= (drvup << DRVUP_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padgrp_set_drvdn(enum pdrive_pingrp grp, int drvdn)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (drvdn == PGRP_DRVDN_NONE)
+ return;
+
+ /* Error check on pad and drvdn */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_drv_isvalid(drvdn));
+
+ val = readl(reg);
+ val &= ~DRVDN_MASK;
+ val |= (drvdn << DRVDN_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padgrp_set_lpmd(enum pdrive_pingrp grp, enum pgrp_lpmd lpmd)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (lpmd == PGRP_LPMD_NONE)
+ return;
+
+ /* Error check pad and lpmd value */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_lpmd_isvalid(lpmd));
+
+ val = readl(reg);
+ val &= ~LPMD_MASK;
+ val |= (lpmd << LPMD_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padgrp_set_schmt(enum pdrive_pingrp grp, enum pgrp_schmt schmt)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (schmt == PGRP_SCHMT_NONE)
+ return;
+
+ /* Error check pad */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_schmt_isvalid(schmt));
+
+ val = readl(reg);
+ if (schmt == PGRP_SCHMT_ENABLE)
+ val |= (1 << SCHMT_SHIFT);
+ else
+ val &= ~(1 << SCHMT_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padgrp_set_hsm(enum pdrive_pingrp grp, enum pgrp_hsm hsm)
+{
+ u32 *reg = DRV_REG(grp);
+ u32 val;
+
+ /* NONE means unspecified/do not change/use POR value */
+ if (hsm == PGRP_HSM_NONE)
+ return;
+
+ /* Error check pad */
+ assert(pmux_padgrp_isvalid(grp));
+ assert(pmux_pad_hsm_isvalid(hsm));
+
+ val = readl(reg);
+ if (hsm == PGRP_HSM_ENABLE)
+ val |= (1 << HSM_SHIFT);
+ else
+ val &= ~(1 << HSM_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+
+static void padctrl_config_pingroup(const struct padctrl_config *config)
+{
+ enum pdrive_pingrp grp = config->padgrp;
+
+ padgrp_set_drvup_slwf(grp, config->slwf);
+ padgrp_set_drvdn_slwr(grp, config->slwr);
+ padgrp_set_drvup(grp, config->drvup);
+ padgrp_set_drvdn(grp, config->drvdn);
+ padgrp_set_lpmd(grp, config->lpmd);
+ padgrp_set_schmt(grp, config->schmt);
+ padgrp_set_hsm(grp, config->hsm);
+}
+
+void padgrp_config_table(const struct padctrl_config *config, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ padctrl_config_pingroup(&config[i]);
+}
+#endif /* TEGRA_PMX_HAS_PADGRPS */
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