diff options
Diffstat (limited to 'arch/arm/cpu/armv7/tegra2/funcmux.c')
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/funcmux.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/funcmux.c b/arch/arm/cpu/armv7/tegra2/funcmux.c deleted file mode 100644 index 4a31a4cf0c..0000000000 --- a/arch/arm/cpu/armv7/tegra2/funcmux.c +++ /dev/null @@ -1,249 +0,0 @@ -/* - * Copyright (c) 2011 The Chromium OS Authors. - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -/* Tegra2 high-level function multiplexing */ -#include <common.h> -#include <asm/arch/clock.h> -#include <asm/arch/funcmux.h> -#include <asm/arch/pinmux.h> - -int funcmux_select(enum periph_id id, int config) -{ - int bad_config = config != FUNCMUX_DEFAULT; - - switch (id) { - case PERIPH_ID_UART1: - switch (config) { - case FUNCMUX_UART1_IRRX_IRTX: - pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA); - pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA); - pinmux_tristate_disable(PINGRP_IRRX); - pinmux_tristate_disable(PINGRP_IRTX); - break; - case FUNCMUX_UART1_UAA_UAB: - pinmux_set_func(PINGRP_UAA, PMUX_FUNC_UARTA); - pinmux_set_func(PINGRP_UAB, PMUX_FUNC_UARTA); - pinmux_tristate_disable(PINGRP_UAA); - pinmux_tristate_disable(PINGRP_UAB); - bad_config = 0; - break; - case FUNCMUX_UART1_GPU: - pinmux_set_func(PINGRP_GPU, PMUX_FUNC_UARTA); - pinmux_tristate_disable(PINGRP_GPU); - bad_config = 0; - break; - case FUNCMUX_UART1_SDIO1: - pinmux_set_func(PINGRP_SDIO1, PMUX_FUNC_UARTA); - pinmux_tristate_disable(PINGRP_SDIO1); - bad_config = 0; - break; - } - if (!bad_config) { - /* - * Tegra appears to boot with function UARTA pre- - * selected on mux group SDB. If two mux groups are - * both set to the same function, it's unclear which - * group's pins drive the RX signals into the HW. - * For UARTA, SDB certainly overrides group IRTX in - * practice. To solve this, configure some alternative - * function on SDB to avoid the conflict. Also, tri- - * state the group to avoid driving any signal onto it - * until we know what's connected. - */ - pinmux_tristate_enable(PINGRP_SDB); - pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3); - } - break; - - case PERIPH_ID_UART2: - if (config == FUNCMUX_UART2_IRDA) { - pinmux_set_func(PINGRP_UAD, PMUX_FUNC_IRDA); - pinmux_tristate_disable(PINGRP_UAD); - } - break; - - case PERIPH_ID_UART4: - if (config == FUNCMUX_UART4_GMC) { - pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD); - pinmux_tristate_disable(PINGRP_GMC); - } - break; - - case PERIPH_ID_DVC_I2C: - /* there is only one selection, pinmux_config is ignored */ - if (config == FUNCMUX_DVC_I2CP) { - pinmux_set_func(PINGRP_I2CP, PMUX_FUNC_I2C); - pinmux_tristate_disable(PINGRP_I2CP); - } - break; - - case PERIPH_ID_I2C1: - /* support pinmux_config of 0 for now, */ - if (config == FUNCMUX_I2C1_RM) { - pinmux_set_func(PINGRP_RM, PMUX_FUNC_I2C); - pinmux_tristate_disable(PINGRP_RM); - } - break; - case PERIPH_ID_I2C2: /* I2C2 */ - switch (config) { - case FUNCMUX_I2C2_DDC: /* DDC pin group, select I2C2 */ - pinmux_set_func(PINGRP_DDC, PMUX_FUNC_I2C2); - /* PTA to HDMI */ - pinmux_set_func(PINGRP_PTA, PMUX_FUNC_HDMI); - pinmux_tristate_disable(PINGRP_DDC); - break; - case FUNCMUX_I2C2_PTA: /* PTA pin group, select I2C2 */ - pinmux_set_func(PINGRP_PTA, PMUX_FUNC_I2C2); - /* set DDC_SEL to RSVDx (RSVD2 works for now) */ - pinmux_set_func(PINGRP_DDC, PMUX_FUNC_RSVD2); - pinmux_tristate_disable(PINGRP_PTA); - bad_config = 0; - break; - } - break; - case PERIPH_ID_I2C3: /* I2C3 */ - /* support pinmux_config of 0 for now */ - if (config == FUNCMUX_I2C3_DTF) { - pinmux_set_func(PINGRP_DTF, PMUX_FUNC_I2C3); - pinmux_tristate_disable(PINGRP_DTF); - } - break; - - case PERIPH_ID_SDMMC1: - if (config == FUNCMUX_SDMMC1_SDIO1_4BIT) { - pinmux_set_func(PINGRP_SDIO1, PMUX_FUNC_SDIO1); - pinmux_tristate_disable(PINGRP_SDIO1); - } - break; - - case PERIPH_ID_SDMMC2: - if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) { - pinmux_set_func(PINGRP_DTA, PMUX_FUNC_SDIO2); - pinmux_set_func(PINGRP_DTD, PMUX_FUNC_SDIO2); - - pinmux_tristate_disable(PINGRP_DTA); - pinmux_tristate_disable(PINGRP_DTD); - } - break; - - case PERIPH_ID_SDMMC3: - switch (config) { - case FUNCMUX_SDMMC3_SDB_SLXA_8BIT: - pinmux_set_func(PINGRP_SLXA, PMUX_FUNC_SDIO3); - pinmux_set_func(PINGRP_SLXC, PMUX_FUNC_SDIO3); - pinmux_set_func(PINGRP_SLXD, PMUX_FUNC_SDIO3); - pinmux_set_func(PINGRP_SLXK, PMUX_FUNC_SDIO3); - - pinmux_tristate_disable(PINGRP_SLXA); - pinmux_tristate_disable(PINGRP_SLXC); - pinmux_tristate_disable(PINGRP_SLXD); - pinmux_tristate_disable(PINGRP_SLXK); - /* fall through */ - - case FUNCMUX_SDMMC3_SDB_4BIT: - pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3); - pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3); - pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3); - - pinmux_tristate_disable(PINGRP_SDB); - pinmux_tristate_disable(PINGRP_SDC); - pinmux_tristate_disable(PINGRP_SDD); - bad_config = 0; - break; - } - break; - - case PERIPH_ID_SDMMC4: - switch (config) { - case FUNCMUX_SDMMC4_ATC_ATD_8BIT: - pinmux_set_func(PINGRP_ATC, PMUX_FUNC_SDIO4); - pinmux_set_func(PINGRP_ATD, PMUX_FUNC_SDIO4); - - pinmux_tristate_disable(PINGRP_ATC); - pinmux_tristate_disable(PINGRP_ATD); - break; - - case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT: - pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4); - pinmux_tristate_disable(PINGRP_GME); - /* fall through */ - - case FUNCMUX_SDMMC4_ATB_GMA_4_BIT: - pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4); - pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4); - - pinmux_tristate_disable(PINGRP_ATB); - pinmux_tristate_disable(PINGRP_GMA); - bad_config = 0; - break; - } - break; - - case PERIPH_ID_KBC: - if (config == FUNCMUX_DEFAULT) { - enum pmux_pingrp grp[] = {PINGRP_KBCA, PINGRP_KBCB, - PINGRP_KBCC, PINGRP_KBCD, PINGRP_KBCE, - PINGRP_KBCF}; - int i; - - for (i = 0; i < ARRAY_SIZE(grp); i++) { - pinmux_tristate_disable(grp[i]); - pinmux_set_func(grp[i], PMUX_FUNC_KBC); - pinmux_set_pullupdown(grp[i], PMUX_PULL_UP); - } - } - break; - - case PERIPH_ID_USB2: - if (config == FUNCMUX_USB2_ULPI) { - pinmux_set_func(PINGRP_UAA, PMUX_FUNC_ULPI); - pinmux_set_func(PINGRP_UAB, PMUX_FUNC_ULPI); - pinmux_set_func(PINGRP_UDA, PMUX_FUNC_ULPI); - - pinmux_tristate_disable(PINGRP_UAA); - pinmux_tristate_disable(PINGRP_UAB); - pinmux_tristate_disable(PINGRP_UDA); - } - break; - - case PERIPH_ID_SPI1: - if (config == FUNCMUX_SPI1_GMC_GMD) { - pinmux_set_func(PINGRP_GMC, PMUX_FUNC_SFLASH); - pinmux_set_func(PINGRP_GMD, PMUX_FUNC_SFLASH); - - pinmux_tristate_disable(PINGRP_GMC); - pinmux_tristate_disable(PINGRP_GMD); - } - break; - - default: - debug("%s: invalid periph_id %d", __func__, id); - return -1; - } - - if (bad_config) { - debug("%s: invalid config %d for periph_id %d", __func__, - config, id); - return -1; - } - - return 0; -} |