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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 11:51:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 11:51:39 -0800
commitd01e4afdbb65e030fd6f1f96c30a558e2eb0f279 (patch)
tree02ef82b2740cf93a98199eded5ef765fa6e03052 /arch/arm/mach-imx/iomux-v3.h
parent8287361abca36504da813638310d2547469283eb (diff)
parent794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (diff)
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson: "Cleanup patches for various ARM platforms and some of their associated drivers. There's also a branch in here that enables Freescale i.MX to be part of the multiplatform support -- the first "big" SoC that is moved over (more multiplatform work comes in a separate branch later during the merge window)." Conflicts fixed as per Olof, including a silent semantic one in arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to omap3xxx_restart(), and a new user of the old name was added). * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits) ARM: omap: fix typo on timer cleanup ARM: EXYNOS: Remove unused regs-mem.h file ARM: EXYNOS: Remove unused non-dt support for dwmci controller ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan ARM: OMAP3: cm-t3517: use GPTIMER for system clock ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER ARM: SAMSUNG: use devm_ functions for ADC driver ARM: EXYNOS: no duplicate mask/unmask in eint0_15 ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443 ARM: EXYNOS: Remove i2c0 resource information and setting of device names ARM: Kirkwood: checkpatch cleanups ARM: Kirkwood: Fix sparse warnings. ARM: Kirkwood: Remove unused includes ARM: kirkwood: cleanup lsxl board includes ARM: integrator: use BUG_ON where possible ARM: integrator: push down SC dependencies ARM: integrator: delete static UART1 mapping ARM: integrator: delete SC mapping on the CP ARM: integrator: remove static CP syscon mapping ARM: integrator: remove static AP syscon mapping ...
Diffstat (limited to 'arch/arm/mach-imx/iomux-v3.h')
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diff --git a/arch/arm/mach-imx/iomux-v3.h b/arch/arm/mach-imx/iomux-v3.h
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+/*
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ * <armlinux@phytec.de>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef __MACH_IOMUX_V3_H__
+#define __MACH_IOMUX_V3_H__
+
+/*
+ * build IOMUX_PAD structure
+ *
+ * This iomux scheme is based around pads, which are the physical balls
+ * on the processor.
+ *
+ * - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls
+ * things like driving strength and pullup/pulldown.
+ * - Each pad can have but not necessarily does have an output routing register
+ * (IOMUXC_SW_MUX_CTL_PAD_x).
+ * - Each pad can have but not necessarily does have an input routing register
+ * (IOMUXC_x_SELECT_INPUT)
+ *
+ * The three register sets do not have a fixed offset to each other,
+ * hence we order this table by pad control registers (which all pads
+ * have) and put the optional i/o routing registers into additional
+ * fields.
+ *
+ * The naming convention for the pad modes is MX35_PAD_<padname>__<padmode>
+ * If <padname> or <padmode> refers to a GPIO, it is named
+ * GPIO_<unit>_<num>
+ *
+ * IOMUX/PAD Bit field definitions
+ *
+ * MUX_CTRL_OFS: 0..11 (12)
+ * PAD_CTRL_OFS: 12..23 (12)
+ * SEL_INPUT_OFS: 24..35 (12)
+ * MUX_MODE + SION: 36..40 (5)
+ * PAD_CTRL + NO_PAD_CTRL: 41..57 (17)
+ * SEL_INP: 58..61 (4)
+ * reserved: 63 (1)
+*/
+
+typedef u64 iomux_v3_cfg_t;
+
+#define MUX_CTRL_OFS_SHIFT 0
+#define MUX_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_CTRL_OFS_SHIFT)
+#define MUX_PAD_CTRL_OFS_SHIFT 12
+#define MUX_PAD_CTRL_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_PAD_CTRL_OFS_SHIFT)
+#define MUX_SEL_INPUT_OFS_SHIFT 24
+#define MUX_SEL_INPUT_OFS_MASK ((iomux_v3_cfg_t)0xfff << MUX_SEL_INPUT_OFS_SHIFT)
+
+#define MUX_MODE_SHIFT 36
+#define MUX_MODE_MASK ((iomux_v3_cfg_t)0x1f << MUX_MODE_SHIFT)
+#define MUX_PAD_CTRL_SHIFT 41
+#define MUX_PAD_CTRL_MASK ((iomux_v3_cfg_t)0x1ffff << MUX_PAD_CTRL_SHIFT)
+#define MUX_SEL_INPUT_SHIFT 58
+#define MUX_SEL_INPUT_MASK ((iomux_v3_cfg_t)0xf << MUX_SEL_INPUT_SHIFT)
+
+#define MUX_PAD_CTRL(x) ((iomux_v3_cfg_t)(x) << MUX_PAD_CTRL_SHIFT)
+
+#define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _sel_input_ofs, \
+ _sel_input, _pad_ctrl) \
+ (((iomux_v3_cfg_t)(_mux_ctrl_ofs) << MUX_CTRL_OFS_SHIFT) | \
+ ((iomux_v3_cfg_t)(_mux_mode) << MUX_MODE_SHIFT) | \
+ ((iomux_v3_cfg_t)(_pad_ctrl_ofs) << MUX_PAD_CTRL_OFS_SHIFT) | \
+ ((iomux_v3_cfg_t)(_pad_ctrl) << MUX_PAD_CTRL_SHIFT) | \
+ ((iomux_v3_cfg_t)(_sel_input_ofs) << MUX_SEL_INPUT_OFS_SHIFT) | \
+ ((iomux_v3_cfg_t)(_sel_input) << MUX_SEL_INPUT_SHIFT))
+
+#define NEW_PAD_CTRL(cfg, pad) (((cfg) & ~MUX_PAD_CTRL_MASK) | MUX_PAD_CTRL(pad))
+/*
+ * Use to set PAD control
+ */
+
+#define NO_PAD_CTRL (1 << 16)
+#define PAD_CTL_DVS (1 << 13)
+#define PAD_CTL_HYS (1 << 8)
+
+#define PAD_CTL_PKE (1 << 7)
+#define PAD_CTL_PUE (1 << 6 | PAD_CTL_PKE)
+#define PAD_CTL_PUS_100K_DOWN (0 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_47K_UP (1 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_100K_UP (2 << 4 | PAD_CTL_PUE)
+#define PAD_CTL_PUS_22K_UP (3 << 4 | PAD_CTL_PUE)
+
+#define PAD_CTL_ODE (1 << 3)
+
+#define PAD_CTL_DSE_LOW (0 << 1)
+#define PAD_CTL_DSE_MED (1 << 1)
+#define PAD_CTL_DSE_HIGH (2 << 1)
+#define PAD_CTL_DSE_MAX (3 << 1)
+
+#define PAD_CTL_SRE_FAST (1 << 0)
+#define PAD_CTL_SRE_SLOW (0 << 0)
+
+#define IOMUX_CONFIG_SION (0x1 << 4)
+
+#define MX51_NUM_GPIO_PORT 4
+
+#define GPIO_PIN_MASK 0x1f
+
+#define GPIO_PORT_SHIFT 5
+#define GPIO_PORT_MASK (0x7 << GPIO_PORT_SHIFT)
+
+#define GPIO_PORTA (0 << GPIO_PORT_SHIFT)
+#define GPIO_PORTB (1 << GPIO_PORT_SHIFT)
+#define GPIO_PORTC (2 << GPIO_PORT_SHIFT)
+#define GPIO_PORTD (3 << GPIO_PORT_SHIFT)
+#define GPIO_PORTE (4 << GPIO_PORT_SHIFT)
+#define GPIO_PORTF (5 << GPIO_PORT_SHIFT)
+
+/*
+ * setups a single pad in the iomuxer
+ */
+int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad);
+
+/*
+ * setups mutliple pads
+ * convenient way to call the above function with tables
+ */
+int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count);
+
+/*
+ * Initialise the iomux controller
+ */
+void mxc_iomux_v3_init(void __iomem *iomux_v3_base);
+
+#endif /* __MACH_IOMUX_V3_H__*/
+