diff options
author | Stephen Warren <swarren@nvidia.com> | 2014-03-21 18:28:54 (GMT) |
---|---|---|
committer | Tom Warren <twarren@nvidia.com> | 2014-04-17 15:41:05 (GMT) |
commit | e296995767e645ed047bcbec90923297a24d4d5a (patch) | |
tree | 0ff4f2cf5c6982a2cd2f5fe9d05db5d26ad9dc59 /arch/arm/cpu/tegra-common | |
parent | 19ed7b4ecf6bdcf991d0a63aac3faa80b6df43cb (diff) | |
download | u-boot-e296995767e645ed047bcbec90923297a24d4d5a.tar.xz |
ARM: tegra: pinctrl: remove duplication
Much of arch/arm/cpu/tegra*-common/pinmux.c is identical. Remove the
duplication by creating pinmux-common.c for all the identical code.
This leaves:
* arch/arm/include/asm/arch-tegra*/pinmux.h defining only the names of
the various pins/pin groups, drive groups, and mux functions.
* arch/arm/cpu/tegra*-common/pinmux.c containing only the lookup table
stating which pin groups support which mux functions.
The code in pinmux-common.c is semantically identical to that in the
various original pinmux.c, but had some consistency and cleanup fixes
applied during migration.
I removed the definition of struct pmux_tri_ctlr, since this is different
between SoCs (especially Tegra20 vs all others), and it's much simpler to
deal with this via the new REG/MUX_REG/... defines. spl.c, warmboot.c,
and warmboot_avp.c needed updates due to this, since they previously
hijacked this struct to encode the location of some non-pinmux registers.
Now, that code simply calculates these register addresses directly using
simple and obvious math. I like this method better irrespective of the
pinmux code cleanup anyway.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm/cpu/tegra-common')
-rw-r--r-- | arch/arm/cpu/tegra-common/Makefile | 6 | ||||
-rw-r--r-- | arch/arm/cpu/tegra-common/pinmux-common.c | 507 |
2 files changed, 512 insertions, 1 deletions
diff --git a/arch/arm/cpu/tegra-common/Makefile b/arch/arm/cpu/tegra-common/Makefile index 34d5734..892556e 100644 --- a/arch/arm/cpu/tegra-common/Makefile +++ b/arch/arm/cpu/tegra-common/Makefile @@ -7,6 +7,10 @@ # SPDX-License-Identifier: GPL-2.0+ # +obj-y += ap.o +obj-y += board.o +obj-y += cache.o +obj-y += clock.o obj-y += lowlevel_init.o -obj-y += ap.o board.o clock.o cache.o +obj-y += pinmux-common.o obj-$(CONFIG_DISPLAY_CPUINFO) += sys_info.o diff --git a/arch/arm/cpu/tegra-common/pinmux-common.c b/arch/arm/cpu/tegra-common/pinmux-common.c new file mode 100644 index 0000000..10f68ba --- /dev/null +++ b/arch/arm/cpu/tegra-common/pinmux-common.c @@ -0,0 +1,507 @@ +/* + * 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 */ |