ARM: tegra: pinctrl: remove duplication

Much of arch/arm/cpu/tegra*-common/pinmux.c is identical. Remove the
duplication by creating pinmux-common.c for all the identical code.

This leaves:
* arch/arm/include/asm/arch-tegra*/pinmux.h defining only the names of
  the various pins/pin groups, drive groups, and mux functions.
* arch/arm/cpu/tegra*-common/pinmux.c containing only the lookup table
  stating which pin groups support which mux functions.

The code in pinmux-common.c is semantically identical to that in the
various original pinmux.c, but had some consistency and cleanup fixes
applied during migration.

I removed the definition of struct pmux_tri_ctlr, since this is different
between SoCs (especially Tegra20 vs all others), and it's much simpler to
deal with this via the new REG/MUX_REG/... defines. spl.c, warmboot.c,
and warmboot_avp.c needed updates due to this, since they previously
hijacked this struct to encode the location of some non-pinmux registers.
Now, that code simply calculates these register addresses directly using
simple and obvious math. I like this method better irrespective of the
pinmux code cleanup anyway.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

1 files changed, 4 insertions, 81 deletions

diff --git a/arch/arm/include/asm/arch-tegra20/pinmux.h b/arch/arm/include/asm/arch-tegra20/pinmux.h
index 1980201ce8..5517c0783d 100644
--- a/arch/arm/include/asm/arch-tegra20/pinmux.h
+++ b/arch/arm/include/asm/arch-tegra20/pinmux.h
@@ -5,8 +5,8 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef _PINMUX_H_
-#define _PINMUX_H_
+#ifndef _TEGRA20_PINMUX_H_
+#define _TEGRA20_PINMUX_H_
 
 /*
  * Pin groups which we adjust. There are three basic attributes of each pin
@@ -236,83 +236,6 @@ enum pmux_func {
 	PMUX_FUNC_RSVD4 = 0x8003,
 };
 
-/* return 1 if a pmux_func is in range */
-#define pmux_func_isvalid(func) \
-	((((func) >= 0) && ((func) < PMUX_FUNC_COUNT)) ||\
-	 (((func) >= PMUX_FUNC_RSVD1) && ((func) <= PMUX_FUNC_RSVD4)))
+#include <asm/arch-tegra/pinmux.h>
 
-/* The pullup/pulldown state of a pin group */
-enum pmux_pull {
-	PMUX_PULL_NORMAL = 0,
-	PMUX_PULL_DOWN,
-	PMUX_PULL_UP,
-};
-
-/* Defines whether a pin group is tristated or in normal operation */
-enum pmux_tristate {
-	PMUX_TRI_NORMAL = 0,
-	PMUX_TRI_TRISTATE = 1,
-};
-
-enum {
-	PMUX_TRISTATE_REGS	= 4,
-	PMUX_MUX_REGS		= 7,
-	PMUX_PULL_REGS		= 5,
-};
-
-/* APB MISC Pin Mux and Tristate (APB_MISC_PP_) registers */
-struct pmux_tri_ctlr {
-	uint pmt_reserved0;		/* ABP_MISC_PP_ reserved offset 00 */
-	uint pmt_reserved1;		/* ABP_MISC_PP_ reserved offset 04 */
-	uint pmt_strap_opt_a;		/* _STRAPPING_OPT_A_0, offset 08   */
-	uint pmt_reserved2;		/* ABP_MISC_PP_ reserved offset 0C */
-	uint pmt_reserved3;		/* ABP_MISC_PP_ reserved offset 10 */
-	uint pmt_tri[PMUX_TRISTATE_REGS];/* _TRI_STATE_REG_A/B/C/D_0 14-20 */
-	uint pmt_cfg_ctl;		/* _CONFIG_CTL_0, offset 24        */
-
-	uint pmt_reserved[22];		/* ABP_MISC_PP_ reserved offs 28-7C */
-
-	uint pmt_ctl[PMUX_MUX_REGS];	/* _PIN_MUX_CTL_A-G_0, offset 80   */
-	uint pmt_reserved4;		/* ABP_MISC_PP_ reserved offset 9c */
-	uint pmt_pull[PMUX_PULL_REGS];	/* APB_MISC_PP_PULLUPDOWN_REG_A-E  */
-};
-
-/*
- * This defines the configuration for a pin, including the function assigned,
- * pull up/down settings and tristate settings. Having set up one of these
- * you can call pinmux_config_pingroup() to configure a pin in one step. Also
- * available is pinmux_config_table() to configure a list of pins.
- */
-struct pingroup_config {
-	enum pmux_pingrp pingroup;	/* pin group PINGRP_...             */
-	enum pmux_func func;		/* function to assign FUNC_...      */
-	enum pmux_pull pull;		/* pull up/down/normal PMUX_PULL_...*/
-	enum pmux_tristate tristate;	/* tristate or normal PMUX_TRI_...  */
-};
-
-/* Set a pin group to tristate */
-void pinmux_tristate_enable(enum pmux_pingrp pin);
-
-/* Set a pin group to normal (non tristate) */
-void pinmux_tristate_disable(enum pmux_pingrp pin);
-
-/* Set the pull up/down feature for a pin group */
-void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd);
-
-/* Set the mux function for a pin group */
-void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func);
-
-/* Set the complete configuration for a pin group */
-void pinmux_config_pingroup(const struct pingroup_config *config);
-
-void pinmux_set_tristate(enum pmux_pingrp pin, int enable);
-
-/**
- * Configuure a list of pin groups
- *
- * @param config	List of config items
- * @param len		Number of config items in list
- */
-void pinmux_config_table(const struct pingroup_config *config, int len);
-
-#endif	/* PINMUX_H */
+#endif /* _TEGRA20_PINMUX_H_ */