u-boot/arch/arm/mach-imx/iomux-v3.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Based on the iomux-v3.c from Linux kernel:
* Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
* Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
* <armlinux@phytec.de>
*
* Copyright (C) 2004-2011 Freescale Semiconductor, Inc.
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
imx: reorganize IMX code as other SOCs Change is consistent with other SOCs and it is in preparation for adding SOMs. SOC's related files are moved from cpu/ to mach-imx/<SOC>. This change is also coherent with the structure in kernel. Signed-off-by: Stefano Babic <sbabic@denx.de> CC: Fabio Estevam <fabio.estevam@nxp.com> CC: Akshay Bhat <akshaybhat@timesys.com> CC: Ken Lin <Ken.Lin@advantech.com.tw> CC: Marek Vasut <marek.vasut@gmail.com> CC: Heiko Schocher <hs@denx.de> CC: "Sébastien Szymanski" <sebastien.szymanski@armadeus.com> CC: Christian Gmeiner <christian.gmeiner@gmail.com> CC: Stefan Roese <sr@denx.de> CC: Patrick Bruenn <p.bruenn@beckhoff.com> CC: Troy Kisky <troy.kisky@boundarydevices.com> CC: Nikita Kiryanov <nikita@compulab.co.il> CC: Otavio Salvador <otavio@ossystems.com.br> CC: "Eric Bénard" <eric@eukrea.com> CC: Jagan Teki <jagan@amarulasolutions.com> CC: Ye Li <ye.li@nxp.com> CC: Peng Fan <peng.fan@nxp.com> CC: Adrian Alonso <adrian.alonso@nxp.com> CC: Alison Wang <b18965@freescale.com> CC: Tim Harvey <tharvey@gateworks.com> CC: Martin Donnelly <martin.donnelly@ge.com> CC: Marcin Niestroj <m.niestroj@grinn-global.com> CC: Lukasz Majewski <lukma@denx.de> CC: Adam Ford <aford173@gmail.com> CC: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr> CC: Boris Brezillon <boris.brezillon@free-electrons.com> CC: Soeren Moch <smoch@web.de> CC: Richard Hu <richard.hu@technexion.com> CC: Wig Cheng <wig.cheng@technexion.com> CC: Vanessa Maegima <vanessa.maegima@nxp.com> CC: Max Krummenacher <max.krummenacher@toradex.com> CC: Stefan Agner <stefan.agner@toradex.com> CC: Markus Niebel <Markus.Niebel@tq-group.com> CC: Breno Lima <breno.lima@nxp.com> CC: Francesco Montefoschi <francesco.montefoschi@udoo.org> CC: Jaehoon Chung <jh80.chung@samsung.com> CC: Scott Wood <oss@buserror.net> CC: Joe Hershberger <joe.hershberger@ni.com> CC: Anatolij Gustschin <agust@denx.de> CC: Simon Glass <sjg@chromium.org> CC: "Andrew F. Davis" <afd@ti.com> CC: "Łukasz Majewski" <l.majewski@samsung.com> CC: Patrice Chotard <patrice.chotard@st.com> CC: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> CC: Hans de Goede <hdegoede@redhat.com> CC: Masahiro Yamada <yamada.masahiro@socionext.com> CC: Stephen Warren <swarren@nvidia.com> CC: Andre Przywara <andre.przywara@arm.com> CC: "Álvaro Fernández Rojas" <noltari@gmail.com> CC: York Sun <york.sun@nxp.com> CC: Xiaoliang Yang <xiaoliang.yang@nxp.com> CC: Chen-Yu Tsai <wens@csie.org> CC: George McCollister <george.mccollister@gmail.com> CC: Sven Ebenfeld <sven.ebenfeld@gmail.com> CC: Filip Brozovic <fbrozovic@gmail.com> CC: Petr Kulhavy <brain@jikos.cz> CC: Eric Nelson <eric@nelint.com> CC: Bai Ping <ping.bai@nxp.com> CC: Anson Huang <Anson.Huang@nxp.com> CC: Sanchayan Maity <maitysanchayan@gmail.com> CC: Lokesh Vutla <lokeshvutla@ti.com> CC: Patrick Delaunay <patrick.delaunay@st.com> CC: Gary Bisson <gary.bisson@boundarydevices.com> CC: Alexander Graf <agraf@suse.de> CC: u-boot@lists.denx.de Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2017-06-29 08:16:06 +00:00
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/sys_proto.h>
static void *base = (void *)IOMUXC_BASE_ADDR;
/*
* configures a single pad in the iomuxer
*/
void imx_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
{
u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
u32 sel_input_ofs =
(pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
u32 sel_input =
(pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
u32 pad_ctrl_ofs =
(pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
#if defined(CONFIG_MX6SL) || defined(CONFIG_MX6SLL)
/* Check whether LVE bit needs to be set */
if (pad_ctrl & PAD_CTL_LVE) {
pad_ctrl &= ~PAD_CTL_LVE;
pad_ctrl |= PAD_CTL_LVE_BIT;
}
#endif
#ifdef CONFIG_IOMUX_LPSR
u32 lpsr = (pad & MUX_MODE_LPSR) >> MUX_MODE_SHIFT;
#ifdef CONFIG_MX7
if (lpsr == IOMUX_CONFIG_LPSR) {
base = (void *)IOMUXC_LPSR_BASE_ADDR;
mux_mode &= ~IOMUX_CONFIG_LPSR;
/* set daisy chain sel_input */
if (sel_input_ofs)
sel_input_ofs += IOMUX_LPSR_SEL_INPUT_OFS;
}
#else
if (is_mx6ull() || is_mx6sll()) {
if (lpsr == IOMUX_CONFIG_LPSR) {
base = (void *)IOMUXC_SNVS_BASE_ADDR;
mux_mode &= ~IOMUX_CONFIG_LPSR;
}
}
#endif
#endif
if (is_mx7() || is_mx6ull() || is_mx6sll() || mux_ctrl_ofs)
__raw_writel(mux_mode, base + mux_ctrl_ofs);
if (sel_input_ofs)
__raw_writel(sel_input, base + sel_input_ofs);
#ifdef CONFIG_IOMUX_SHARE_CONF_REG
if (!(pad_ctrl & NO_PAD_CTRL))
__raw_writel((mux_mode << PAD_MUX_MODE_SHIFT) | pad_ctrl,
base + pad_ctrl_ofs);
#else
if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
__raw_writel(pad_ctrl, base + pad_ctrl_ofs);
#if defined(CONFIG_MX6SLL)
else if ((pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
clrbits_le32(base + pad_ctrl_ofs, PAD_CTL_IPD_BIT);
#endif
#endif
#ifdef CONFIG_IOMUX_LPSR
if (lpsr == IOMUX_CONFIG_LPSR)
base = (void *)IOMUXC_BASE_ADDR;
#endif
}
/* configures a list of pads within declared with IOMUX_PADS macro */
void imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list,
unsigned count)
{
iomux_v3_cfg_t const *p = pad_list;
int stride;
int i;
#if defined(CONFIG_MX6QDL)
stride = 2;
if (!is_mx6dq() && !is_mx6dqp())
p += 1;
#else
stride = 1;
#endif
for (i = 0; i < count; i++) {
imx_iomux_v3_setup_pad(*p);
p += stride;
}
}
void imx_iomux_set_gpr_register(int group, int start_bit,
int num_bits, int value)
{
int i = 0;
u32 reg;
reg = readl(base + group * 4);
while (num_bits) {
reg &= ~(1<<(start_bit + i));
i++;
num_bits--;
}
reg |= (value << start_bit);
writel(reg, base + group * 4);
}
#ifdef CONFIG_IOMUX_SHARE_CONF_REG
void imx_iomux_gpio_set_direction(unsigned int gpio,
unsigned int direction)
{
u32 reg;
/*
* Only on Vybrid the input/output buffer enable flags
* are part of the shared mux/conf register.
*/
reg = readl(base + (gpio << 2));
if (direction)
reg |= 0x2;
else
reg &= ~0x2;
writel(reg, base + (gpio << 2));
}
void imx_iomux_gpio_get_function(unsigned int gpio, u32 *gpio_state)
{
*gpio_state = readl(base + (gpio << 2)) &
((0X07 << PAD_MUX_MODE_SHIFT) | PAD_CTL_OBE_IBE_ENABLE);
}
#endif