+++ /dev/null
-/*
- * (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);
-}
projects / karo-tx-uboot.git / blobdiff