diff options
Diffstat (limited to 'arch/arm/cpu/armv7/mx5/iomux.c')
| -rw-r--r-- | arch/arm/cpu/armv7/mx5/iomux.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/arch/arm/cpu/armv7/mx5/iomux.c b/arch/arm/cpu/armv7/mx5/iomux.c deleted file mode 100644 index d4e3bbb437..0000000000 --- a/arch/arm/cpu/armv7/mx5/iomux.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * (C) Copyright 2009 Freescale Semiconductor, Inc. - * - * 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 - */ - -#include <common.h> -#include <asm/io.h> -#include <asm/arch/imx-regs.h> -#include <asm/arch/mx5x_pins.h> -#include <asm/arch/iomux.h> -#include <asm/arch/sys_proto.h> - -/* IOMUX register (base) addresses */ -enum iomux_reg_addr { - IOMUXGPR0 = IOMUXC_BASE_ADDR, - IOMUXGPR1 = IOMUXC_BASE_ADDR + 0x004, - IOMUXSW_MUX_CTL = IOMUXC_BASE_ADDR, - IOMUXSW_MUX_END = IOMUXC_BASE_ADDR + MUX_I_END, - IOMUXSW_PAD_CTL = IOMUXC_BASE_ADDR + PAD_I_START, - IOMUXSW_INPUT_CTL = IOMUXC_BASE_ADDR + INPUT_CTL_START, -}; - -#define MUX_PIN_NUM_MAX (((MUX_I_END - MUX_I_START) >> 2) + 1) - -/* Get the iomux register address of this pin */ -static inline u32 get_mux_reg(iomux_pin_name_t pin) -{ - u32 mux_reg = PIN_TO_IOMUX_MUX(pin); - -#if defined(CONFIG_MX51) - if (is_soc_rev(CHIP_REV_2_0) < 0) { - /* - * Fixup register address: - * i.MX51 TO1 has offset with the register - * which is define as TO2. - */ - if ((pin == MX51_PIN_NANDF_RB5) || - (pin == MX51_PIN_NANDF_RB6) || - (pin == MX51_PIN_NANDF_RB7)) - ; /* Do nothing */ - else if (mux_reg >= 0x2FC) - mux_reg += 8; - else if (mux_reg >= 0x130) - mux_reg += 0xC; - } -#endif - mux_reg += IOMUXSW_MUX_CTL; - return mux_reg; -} - -/* Get the pad register address of this pin */ -static inline u32 get_pad_reg(iomux_pin_name_t pin) -{ - u32 pad_reg = PIN_TO_IOMUX_PAD(pin); - -#if defined(CONFIG_MX51) - if (is_soc_rev(CHIP_REV_2_0) < 0) { - /* - * Fixup register address: - * i.MX51 TO1 has offset with the register - * which is define as TO2. - */ - if ((pin == MX51_PIN_NANDF_RB5) || - (pin == MX51_PIN_NANDF_RB6) || - (pin == MX51_PIN_NANDF_RB7)) - ; /* Do nothing */ - else if (pad_reg == 0x4D0 - PAD_I_START) - pad_reg += 0x4C; - else if (pad_reg == 0x860 - PAD_I_START) - pad_reg += 0x9C; - else if (pad_reg >= 0x804 - PAD_I_START) - pad_reg += 0xB0; - else if (pad_reg >= 0x7FC - PAD_I_START) - pad_reg += 0xB4; - else if (pad_reg >= 0x4E4 - PAD_I_START) - pad_reg += 0xCC; - else - pad_reg += 8; - } -#endif - pad_reg += IOMUXSW_PAD_CTL; - return pad_reg; -} - -/* Get the last iomux register address */ -static inline u32 get_mux_end(void) -{ -#if defined(CONFIG_MX51) - if (is_soc_rev(CHIP_REV_2_0) < 0) - return IOMUXC_BASE_ADDR + (0x3F8 - 4); - else - return IOMUXC_BASE_ADDR + (0x3F0 - 4); -#endif - return IOMUXSW_MUX_END; -} - -/* - * This function is used to configure a pin through the IOMUX module. - * @param pin a pin number as defined in iomux_pin_name_t - * @param cfg an output function as defined in iomux_pin_cfg_t - * - * @return 0 if successful; Non-zero otherwise - */ -static void iomux_config_mux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg) -{ - u32 mux_reg = get_mux_reg(pin); - - if ((mux_reg > get_mux_end()) || (mux_reg < IOMUXSW_MUX_CTL)) - return ; - if (cfg == IOMUX_CONFIG_GPIO) - writel(PIN_TO_ALT_GPIO(pin), mux_reg); - else - writel(cfg, mux_reg); -} - -/* - * Request ownership for an IO pin. This function has to be the first one - * being called before that pin is used. The caller has to check the - * return value to make sure it returns 0. - * - * @param pin a name defined by iomux_pin_name_t - * @param cfg an input function as defined in iomux_pin_cfg_t - * - */ -void mxc_request_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg) -{ - iomux_config_mux(pin, cfg); -} - -/* - * Release ownership for an IO pin - * - * @param pin a name defined by iomux_pin_name_t - * @param cfg an input function as defined in iomux_pin_cfg_t - */ -void mxc_free_iomux(iomux_pin_name_t pin, iomux_pin_cfg_t cfg) -{ -} - -/* - * This function configures the pad value for a IOMUX pin. - * - * @param pin a pin number as defined in iomux_pin_name_t - * @param config the ORed value of elements defined in iomux_pad_config_t - */ -void mxc_iomux_set_pad(iomux_pin_name_t pin, u32 config) -{ - u32 pad_reg = get_pad_reg(pin); - writel(config, pad_reg); -} - -unsigned int mxc_iomux_get_pad(iomux_pin_name_t pin) -{ - u32 pad_reg = get_pad_reg(pin); - return readl(pad_reg); -} - -/* - * This function configures daisy-chain - * - * @param input index of input select register - * @param config the binary value of elements - */ -void mxc_iomux_set_input(iomux_input_select_t input, u32 config) -{ - u32 reg = IOMUXSW_INPUT_CTL + (input << 2); - - writel(config, reg); -} |