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Diffstat (limited to 'arch/arm/mach-tegra/board-pinmux.c')
-rw-r--r--arch/arm/mach-tegra/board-pinmux.c105
1 files changed, 44 insertions, 61 deletions
diff --git a/arch/arm/mach-tegra/board-pinmux.c b/arch/arm/mach-tegra/board-pinmux.c
index adc3efe979b3..a5574c71b931 100644
--- a/arch/arm/mach-tegra/board-pinmux.c
+++ b/arch/arm/mach-tegra/board-pinmux.c
@@ -1,5 +1,5 @@
1/* 1/*
2 * Copyright (c) 2011, NVIDIA CORPORATION. All rights reserved. 2 * Copyright (c) 2011,2012, NVIDIA CORPORATION. All rights reserved.
3 * 3 *
4 * This software is licensed under the terms of the GNU General Public 4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and 5 * License version 2, as published by the Free Software Foundation, and
@@ -15,75 +15,59 @@
15#include <linux/device.h> 15#include <linux/device.h>
16#include <linux/kernel.h> 16#include <linux/kernel.h>
17#include <linux/notifier.h> 17#include <linux/notifier.h>
18#include <linux/of.h>
19#include <linux/string.h> 18#include <linux/string.h>
20 19
21#include <mach/gpio-tegra.h>
22#include <mach/pinmux.h>
23
24#include "board-pinmux.h" 20#include "board-pinmux.h"
25#include "devices.h" 21#include "devices.h"
26 22
27struct tegra_board_pinmux_conf *confs[2]; 23unsigned long tegra_pincfg_pullnone_driven[2] = {
28 24 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_NONE),
29static void tegra_board_pinmux_setup_gpios(void) 25 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_DRIVEN),
30{ 26};
31 int i;
32
33 for (i = 0; i < ARRAY_SIZE(confs); i++) {
34 if (!confs[i])
35 continue;
36
37 tegra_gpio_config(confs[i]->gpios, confs[i]->gpio_count);
38 }
39}
40
41static void tegra_board_pinmux_setup_pinmux(void)
42{
43 int i;
44 27
45 for (i = 0; i < ARRAY_SIZE(confs); i++) { 28unsigned long tegra_pincfg_pullnone_tristate[2] = {
46 if (!confs[i]) 29 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_NONE),
47 continue; 30 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_TRISTATE),
31};
48 32
49 tegra_pinmux_config_table(confs[i]->pgs, confs[i]->pg_count); 33unsigned long tegra_pincfg_pullnone_na[1] = {
34 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_NONE),
35};
50 36
51 if (confs[i]->drives) 37unsigned long tegra_pincfg_pullup_driven[2] = {
52 tegra_drive_pinmux_config_table(confs[i]->drives, 38 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_UP),
53 confs[i]->drive_count); 39 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_DRIVEN),
54 } 40};
55}
56 41
57static int tegra_board_pinmux_bus_notify(struct notifier_block *nb, 42unsigned long tegra_pincfg_pullup_tristate[2] = {
58 unsigned long event, void *vdev) 43 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_UP),
59{ 44 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_TRISTATE),
60 static bool had_gpio; 45};
61 static bool had_pinmux;
62 46
63 struct device *dev = vdev; 47unsigned long tegra_pincfg_pullup_na[1] = {
64 const char *devname; 48 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_UP),
49};
65 50
66 if (event != BUS_NOTIFY_BOUND_DRIVER) 51unsigned long tegra_pincfg_pulldown_driven[2] = {
67 return NOTIFY_DONE; 52 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_DOWN),
53 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_DRIVEN),
54};
68 55
69 devname = dev_name(dev); 56unsigned long tegra_pincfg_pulldown_tristate[2] = {
57 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_DOWN),
58 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_TRISTATE),
59};
70 60
71 if (!had_gpio && !strcmp(devname, GPIO_DEV)) { 61unsigned long tegra_pincfg_pulldown_na[1] = {
72 tegra_board_pinmux_setup_gpios(); 62 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_PULL, TEGRA_PINCONFIG_PULL_DOWN),
73 had_gpio = true; 63};
74 } else if (!had_pinmux && !strcmp(devname, PINMUX_DEV)) {
75 tegra_board_pinmux_setup_pinmux();
76 had_pinmux = true;
77 }
78 64
79 if (had_gpio && had_pinmux) 65unsigned long tegra_pincfg_pullna_driven[1] = {
80 return NOTIFY_STOP_MASK; 66 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_DRIVEN),
81 else 67};
82 return NOTIFY_DONE;
83}
84 68
85static struct notifier_block nb = { 69unsigned long tegra_pincfg_pullna_tristate[1] = {
86 .notifier_call = tegra_board_pinmux_bus_notify, 70 TEGRA_PINCONF_PACK(TEGRA_PINCONF_PARAM_TRISTATE, TEGRA_PINCONFIG_TRISTATE),
87}; 71};
88 72
89static struct platform_device *devices[] = { 73static struct platform_device *devices[] = {
@@ -94,11 +78,10 @@ static struct platform_device *devices[] = {
94void tegra_board_pinmux_init(struct tegra_board_pinmux_conf *conf_a, 78void tegra_board_pinmux_init(struct tegra_board_pinmux_conf *conf_a,
95 struct tegra_board_pinmux_conf *conf_b) 79 struct tegra_board_pinmux_conf *conf_b)
96{ 80{
97 confs[0] = conf_a; 81 if (conf_a)
98 confs[1] = conf_b; 82 pinctrl_register_mappings(conf_a->maps, conf_a->map_count);
99 83 if (conf_b)
100 bus_register_notifier(&platform_bus_type, &nb); 84 pinctrl_register_mappings(conf_b->maps, conf_b->map_count);
101 85
102 if (!of_machine_is_compatible("nvidia,tegra20")) 86 platform_add_devices(devices, ARRAY_SIZE(devices));
103 platform_add_devices(devices, ARRAY_SIZE(devices));
104} 87}