[ARM] tegra: pinmux: add safe values, move tegra2, add suspend

- the reset values for some pin groups in the tegra pin mux can result in
functional errors due to conflicting with actively-configured pin groups
muxing from the same controller. this change adds a known safe, non-
conflicting mux for every pin group, which can be used on platforms
where the pin group is not routed to any peripheral

- also add each pin group's I/O voltage rail, to enable platform code to
map from the pin groups used by each interface to the regulators used
for dynamic voltage control

- add routines to individually configure the tristate, pin mux and pull-
ups for a pingroup_config array, so that it is possible to program
individual values at run-time without modifying other values.
this allows driver power-management code to reprogram individual
interfaces into lower power states during idle / suspend, or to
reprogram the pin mux to support multiple physical busses per
internal controller (e.g., sharing a single I2C or SPI controller
across multiple pin groups)

- move chip-specific data like pingroups and drive-pingroups
out of the common code and into chip-specific code

- fix debug output for group with no pullups

- add a TEGRA_MUX_SAFE function.  Setting a pingroup to TEGRA_MUX_SAFE
will automatically select a mux setting that is guaranteed not to
conflict with any of the hardware blocks.

Signed-off-by: Gary King <gking@nvidia.com>

arch/arm/mach-tegra/Makefile

@@ -7,6 +7,7 @@ obj-y                                   += gpio.o
 obj-y                                   += pinmux.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += clock.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += tegra2_clocks.o
+obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= pinmux-t2-tables.o
 obj-$(CONFIG_SMP)                       += platsmp.o localtimer.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)               += hotplug.o
 

arch/arm/mach-tegra/include/mach/pinmux-t2.h

@@ -0,0 +1,174 @@
+/*
+ * linux/arch/arm/mach-tegra/include/mach/pinmux-t2.h
+ *
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __MACH_TEGRA_PINMUX_T2_H
+#define __MACH_TEGRA_PINMUX_T2_H
+
+enum tegra_pingroup {
+	TEGRA_PINGROUP_ATA = 0,
+	TEGRA_PINGROUP_ATB,
+	TEGRA_PINGROUP_ATC,
+	TEGRA_PINGROUP_ATD,
+	TEGRA_PINGROUP_ATE,
+	TEGRA_PINGROUP_CDEV1,
+	TEGRA_PINGROUP_CDEV2,
+	TEGRA_PINGROUP_CRTP,
+	TEGRA_PINGROUP_CSUS,
+	TEGRA_PINGROUP_DAP1,
+	TEGRA_PINGROUP_DAP2,
+	TEGRA_PINGROUP_DAP3,
+	TEGRA_PINGROUP_DAP4,
+	TEGRA_PINGROUP_DDC,
+	TEGRA_PINGROUP_DTA,
+	TEGRA_PINGROUP_DTB,
+	TEGRA_PINGROUP_DTC,
+	TEGRA_PINGROUP_DTD,
+	TEGRA_PINGROUP_DTE,
+	TEGRA_PINGROUP_DTF,
+	TEGRA_PINGROUP_GMA,
+	TEGRA_PINGROUP_GMB,
+	TEGRA_PINGROUP_GMC,
+	TEGRA_PINGROUP_GMD,
+	TEGRA_PINGROUP_GME,
+	TEGRA_PINGROUP_GPU,
+	TEGRA_PINGROUP_GPU7,
+	TEGRA_PINGROUP_GPV,
+	TEGRA_PINGROUP_HDINT,
+	TEGRA_PINGROUP_I2CP,
+	TEGRA_PINGROUP_IRRX,
+	TEGRA_PINGROUP_IRTX,
+	TEGRA_PINGROUP_KBCA,
+	TEGRA_PINGROUP_KBCB,
+	TEGRA_PINGROUP_KBCC,
+	TEGRA_PINGROUP_KBCD,
+	TEGRA_PINGROUP_KBCE,
+	TEGRA_PINGROUP_KBCF,
+	TEGRA_PINGROUP_LCSN,
+	TEGRA_PINGROUP_LD0,
+	TEGRA_PINGROUP_LD1,
+	TEGRA_PINGROUP_LD10,
+	TEGRA_PINGROUP_LD11,
+	TEGRA_PINGROUP_LD12,
+	TEGRA_PINGROUP_LD13,
+	TEGRA_PINGROUP_LD14,
+	TEGRA_PINGROUP_LD15,
+	TEGRA_PINGROUP_LD16,
+	TEGRA_PINGROUP_LD17,
+	TEGRA_PINGROUP_LD2,
+	TEGRA_PINGROUP_LD3,
+	TEGRA_PINGROUP_LD4,
+	TEGRA_PINGROUP_LD5,
+	TEGRA_PINGROUP_LD6,
+	TEGRA_PINGROUP_LD7,
+	TEGRA_PINGROUP_LD8,
+	TEGRA_PINGROUP_LD9,
+	TEGRA_PINGROUP_LDC,
+	TEGRA_PINGROUP_LDI,
+	TEGRA_PINGROUP_LHP0,
+	TEGRA_PINGROUP_LHP1,
+	TEGRA_PINGROUP_LHP2,
+	TEGRA_PINGROUP_LHS,
+	TEGRA_PINGROUP_LM0,
+	TEGRA_PINGROUP_LM1,
+	TEGRA_PINGROUP_LPP,
+	TEGRA_PINGROUP_LPW0,
+	TEGRA_PINGROUP_LPW1,
+	TEGRA_PINGROUP_LPW2,
+	TEGRA_PINGROUP_LSC0,
+	TEGRA_PINGROUP_LSC1,
+	TEGRA_PINGROUP_LSCK,
+	TEGRA_PINGROUP_LSDA,
+	TEGRA_PINGROUP_LSDI,
+	TEGRA_PINGROUP_LSPI,
+	TEGRA_PINGROUP_LVP0,
+	TEGRA_PINGROUP_LVP1,
+	TEGRA_PINGROUP_LVS,
+	TEGRA_PINGROUP_OWC,
+	TEGRA_PINGROUP_PMC,
+	TEGRA_PINGROUP_PTA,
+	TEGRA_PINGROUP_RM,
+	TEGRA_PINGROUP_SDB,
+	TEGRA_PINGROUP_SDC,
+	TEGRA_PINGROUP_SDD,
+	TEGRA_PINGROUP_SDIO1,
+	TEGRA_PINGROUP_SLXA,
+	TEGRA_PINGROUP_SLXC,
+	TEGRA_PINGROUP_SLXD,
+	TEGRA_PINGROUP_SLXK,
+	TEGRA_PINGROUP_SPDI,
+	TEGRA_PINGROUP_SPDO,
+	TEGRA_PINGROUP_SPIA,
+	TEGRA_PINGROUP_SPIB,
+	TEGRA_PINGROUP_SPIC,
+	TEGRA_PINGROUP_SPID,
+	TEGRA_PINGROUP_SPIE,
+	TEGRA_PINGROUP_SPIF,
+	TEGRA_PINGROUP_SPIG,
+	TEGRA_PINGROUP_SPIH,
+	TEGRA_PINGROUP_UAA,
+	TEGRA_PINGROUP_UAB,
+	TEGRA_PINGROUP_UAC,
+	TEGRA_PINGROUP_UAD,
+	TEGRA_PINGROUP_UCA,
+	TEGRA_PINGROUP_UCB,
+	TEGRA_PINGROUP_UDA,
+	/* these pin groups only have pullup and pull down control */
+	TEGRA_PINGROUP_CK32,
+	TEGRA_PINGROUP_DDRC,
+	TEGRA_PINGROUP_PMCA,
+	TEGRA_PINGROUP_PMCB,
+	TEGRA_PINGROUP_PMCC,
+	TEGRA_PINGROUP_PMCD,
+	TEGRA_PINGROUP_PMCE,
+	TEGRA_PINGROUP_XM2C,
+	TEGRA_PINGROUP_XM2D,
+	TEGRA_MAX_PINGROUP,
+};
+
+enum tegra_drive_pingroup {
+	TEGRA_DRIVE_PINGROUP_AO1 = 0,
+	TEGRA_DRIVE_PINGROUP_AO2,
+	TEGRA_DRIVE_PINGROUP_AT1,
+	TEGRA_DRIVE_PINGROUP_AT2,
+	TEGRA_DRIVE_PINGROUP_CDEV1,
+	TEGRA_DRIVE_PINGROUP_CDEV2,
+	TEGRA_DRIVE_PINGROUP_CSUS,
+	TEGRA_DRIVE_PINGROUP_DAP1,
+	TEGRA_DRIVE_PINGROUP_DAP2,
+	TEGRA_DRIVE_PINGROUP_DAP3,
+	TEGRA_DRIVE_PINGROUP_DAP4,
+	TEGRA_DRIVE_PINGROUP_DBG,
+	TEGRA_DRIVE_PINGROUP_LCD1,
+	TEGRA_DRIVE_PINGROUP_LCD2,
+	TEGRA_DRIVE_PINGROUP_SDMMC2,
+	TEGRA_DRIVE_PINGROUP_SDMMC3,
+	TEGRA_DRIVE_PINGROUP_SPI,
+	TEGRA_DRIVE_PINGROUP_UAA,
+	TEGRA_DRIVE_PINGROUP_UAB,
+	TEGRA_DRIVE_PINGROUP_UART2,
+	TEGRA_DRIVE_PINGROUP_UART3,
+	TEGRA_DRIVE_PINGROUP_VI1,
+	TEGRA_DRIVE_PINGROUP_VI2,
+	TEGRA_DRIVE_PINGROUP_XM2A,
+	TEGRA_DRIVE_PINGROUP_XM2C,
+	TEGRA_DRIVE_PINGROUP_XM2D,
+	TEGRA_DRIVE_PINGROUP_XM2CLK,
+	TEGRA_DRIVE_PINGROUP_MEMCOMP,
+	TEGRA_MAX_DRIVE_PINGROUP,
+};
+
+#endif
+