NED
/
tegrakernel
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
tegrakernel/kernel/nvidia/drivers/gpio/gpio-tegra186.c

2003 lines
56 KiB
C
Raw Blame History

/*
* GPIO driver for NVIDIA Tegra186
*
* Copyright (c) 2015-2020, NVIDIA CORPORATION. All rights reserved.
*
* Author: Suresh Mangipudi <smangipudi@nvidia.com>
*
* 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.
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm.h>
#include <linux/irqchip/tegra.h>
#include <linux/gpio-tegra186.h>
#include <dt-bindings/gpio/tegra186-gpio.h>
#include <dt-bindings/gpio/tegra194-gpio.h>
#include <linux/version.h>
/* GPIO control registers */
#define GPIO_ENB_CONFIG_REG 0x00
#define GPIO_DBC_THRES_REG 0x04
#define GPIO_INPUT_REG 0x08
#define GPIO_OUT_CTRL_REG 0x0c
#define GPIO_OUT_VAL_REG 0x10
#define GPIO_INT_CLEAR_REG 0x14
#define GPIO_REG_DIFF 0x20
#define GPIO_INT_STATUS_OFFSET 0x100
#define ROUTE_MAP_OFFSET 0x14
#define GPIO_VM_REG 0x00
#define GPIO_VM_RW 0x03
/* GPIO SCR registers */
#define GPIO_SCR_REG 0x04
#define GPIO_SCR_DIFF 0x08
#define GPIO_SCR_BASE_DIFF 0x40
#define GPIO_ENB_BIT BIT(0)
#define GPIO_INOUT_BIT BIT(1)
#define GPIO_TRG_TYPE_BIT(x) ((x) & 0x3)
#define GPIO_TRG_TYPE_BIT_OFFSET 0x2
#define GPIO_TRG_LVL_BIT BIT(4)
#define GPIO_DEB_FUNC_BIT BIT(5)
#define GPIO_INT_FUNC_BIT BIT(6)
#define GPIO_TIMESTAMP_FUNC_BIT 0x7
#define GPIO_DBC_THRES_BIT(val) ((val) & 0xFF)
#define GPIO_SCR_SEC_WEN BIT(28)
#define GPIO_SCR_SEC_REN BIT(27)
#define GPIO_SCR_SEC_G1W BIT(9)
#define GPIO_SCR_SEC_G1R BIT(1)
#define GPIO_FULL_ACCESS (GPIO_SCR_SEC_WEN | \
GPIO_SCR_SEC_REN | \
GPIO_SCR_SEC_G1R | \
GPIO_SCR_SEC_G1W)
#define GPIO_SCR_SEC_ENABLE (GPIO_SCR_SEC_WEN | \
GPIO_SCR_SEC_REN)
#define GPIO_INT_LVL_NO_TRIGGER 0x0
#define GPIO_INT_LVL_LEVEL_TRIGGER 0x1
#define GPIO_INT_LVL_SINGLE_EDGE_TRIGGER 0x2
#define GPIO_INT_LVL_BOTH_EDGE_TRIGGER 0x3
#define TRIGGER_LEVEL_LOW 0x0
#define TRIGGER_LEVEL_HIGH 0x1
#define GPIO_STATUS_G1 0x04
#define MAX_GPIO_CONTROLLERS 7
#define MAX_GPIO_PORTS 8
#define MAX_IRQS 8
#define MAX_GPIO_IRQS (MAX_GPIO_CONTROLLERS * MAX_GPIO_PORTS * 8)
#define GPIO_PORT(g) ((g) >> 3)
#define GPIO_PIN(g) ((g) & 0x7)
#define GPIO_INTERRUPT_UNMASK_ENABLE 0x1
#define GPIO_PIN_DIRECTION_INPUT 0x2
/******************** GTE Registers ******************************/
#define GTE_GPIO_TECTRL 0x0
#define GTE_GPIO_TETSCH 0x4
#define GTE_GPIO_TETSCL 0x8
#define GTE_GPIO_TESRC 0xC
#define GTE_GPIO_TECCV 0x10
#define GTE_GPIO_TEPCV 0x14
#define GTE_GPIO_TEENCV 0x18
#define GTE_GPIO_TECMD 0x1C
#define GTE_GPIO_TESTATUS 0x20
#define GTE_GPIO_SLICE0_TETEN 0x40
#define GTE_GPIO_SLICE0_TETDIS 0x44
#define GTE_GPIO_SLICE1_TETEN 0x60
#define GTE_GPIO_SLICE1_TETDIS 0x64
#define GTE_GPIO_SLICE2_TETEN 0x80
#define GTE_GPIO_SLICE2_TETDIS 0x84
#define GTE_GPIO_TECTRL_ENABLE_SHIFT 0
#define GTE_GPIO_TECTRL_ENABLE_MASK 0x1
#define GTE_GPIO_TECTRL_ENABLE_DISABLE 0x0
#define GTE_GPIO_TECTRL_ENABLE_ENABLE 0x1
#define GTE_GPIO_TESRC_SLICE_SHIFT 16
#define GTE_GPIO_TESRC_SLICE_DEFAULT_MASK 0xFF
#define GTE_GPIO_TECMD_CMD_POP 0x1
#define GTE_GPIO_TESTATUS_OCCUPANCY_SHIFT 8
#define GTE_GPIO_TESTATUS_OCCUPANCY_MASK 0xFF
#define AON_GPIO_SLICE1_MAP 0x3000
#define AON_GPIO_SLICE2_MAP 0xFFFFFFF
#define AON_GPIO_SLICE1_INDEX 1
#define AON_GPIO_SLICE2_INDEX 2
#define BASE_ADDRESS_GTE_GPIO_SLICE0 0x40
#define BASE_ADDRESS_GTE_GPIO_SLICE1 0x60
#define BASE_ADDRESS_GTE_GPIO_SLICE2 0x80
#define GTE_GPIO_SLICE_SIZE (BASE_ADDRESS_GTE_GPIO_SLICE1 - \
BASE_ADDRESS_GTE_GPIO_SLICE0)
/* AON GPIOS are mapped to only slice 1 and slice 2 */
/* GTE Interrupt connections. For slice 1 */
#define NV_AON_GTE_SLICE1_IRQ_LIC0 0
#define NV_AON_GTE_SLICE1_IRQ_LIC1 1
#define NV_AON_GTE_SLICE1_IRQ_LIC2 2
#define NV_AON_GTE_SLICE1_IRQ_LIC3 3
#define NV_AON_GTE_SLICE1_IRQ_APBERR 4
#define NV_AON_GTE_SLICE1_IRQ_GPIO 5
#define NV_AON_GTE_SLICE1_IRQ_WAKE0 6
#define NV_AON_GTE_SLICE1_IRQ_PMC 7
#define NV_AON_GTE_SLICE1_IRQ_DMIC 8
#define NV_AON_GTE_SLICE1_IRQ_PM 9
#define NV_AON_GTE_SLICE1_IRQ_FPUINT 10
#define NV_AON_GTE_SLICE1_IRQ_AOVC 11
#define NV_AON_GTE_SLICE1_IRQ_GPIO_28 12
#define NV_AON_GTE_SLICE1_IRQ_GPIO_29 13
#define NV_AON_GTE_SLICE1_IRQ_GPIO_30 14
#define NV_AON_GTE_SLICE1_IRQ_GPIO_31 15
#define NV_AON_GTE_SLICE1_IRQ_GPIO_32 16
#define NV_AON_GTE_SLICE1_IRQ_GPIO_33 17
#define NV_AON_GTE_SLICE1_IRQ_GPIO_34 18
#define NV_AON_GTE_SLICE1_IRQ_GPIO_35 19
#define NV_AON_GTE_SLICE1_IRQ_GPIO_36 20
#define NV_AON_GTE_SLICE1_IRQ_GPIO_37 21
#define NV_AON_GTE_SLICE1_IRQ_GPIO_38 22
#define NV_AON_GTE_SLICE1_IRQ_GPIO_39 23
#define NV_AON_GTE_SLICE1_IRQ_GPIO_40 24
#define NV_AON_GTE_SLICE1_IRQ_GPIO_41 25
#define NV_AON_GTE_SLICE1_IRQ_GPIO_42 26
#define NV_AON_GTE_SLICE1_IRQ_GPIO_43 27
/* GTE Interrupt connections. For slice 2 */
#define NV_AON_GTE_SLICE2_IRQ_GPIO_0 0
#define NV_AON_GTE_SLICE2_IRQ_GPIO_1 1
#define NV_AON_GTE_SLICE2_IRQ_GPIO_2 2
#define NV_AON_GTE_SLICE2_IRQ_GPIO_3 3
#define NV_AON_GTE_SLICE2_IRQ_GPIO_4 4
#define NV_AON_GTE_SLICE2_IRQ_GPIO_5 5
#define NV_AON_GTE_SLICE2_IRQ_GPIO_6 6
#define NV_AON_GTE_SLICE2_IRQ_GPIO_7 7
#define NV_AON_GTE_SLICE2_IRQ_GPIO_8 8
#define NV_AON_GTE_SLICE2_IRQ_GPIO_9 9
#define NV_AON_GTE_SLICE2_IRQ_GPIO_10 10
#define NV_AON_GTE_SLICE2_IRQ_GPIO_11 11
#define NV_AON_GTE_SLICE2_IRQ_GPIO_12 12
#define NV_AON_GTE_SLICE2_IRQ_GPIO_13 13
#define NV_AON_GTE_SLICE2_IRQ_GPIO_14 14
#define NV_AON_GTE_SLICE2_IRQ_GPIO_15 15
#define NV_AON_GTE_SLICE2_IRQ_GPIO_16 16
#define NV_AON_GTE_SLICE2_IRQ_GPIO_17 17
#define NV_AON_GTE_SLICE2_IRQ_GPIO_18 18
#define NV_AON_GTE_SLICE2_IRQ_GPIO_19 19
#define NV_AON_GTE_SLICE2_IRQ_GPIO_20 20
#define NV_AON_GTE_SLICE2_IRQ_GPIO_21 21
#define NV_AON_GTE_SLICE2_IRQ_GPIO_22 22
#define NV_AON_GTE_SLICE2_IRQ_GPIO_23 23
#define NV_AON_GTE_SLICE2_IRQ_GPIO_24 24
#define NV_AON_GTE_SLICE2_IRQ_GPIO_25 25
#define NV_AON_GTE_SLICE2_IRQ_GPIO_26 26
#define NV_AON_GTE_SLICE2_IRQ_GPIO_27 27
/**************************************************************/
static const int tegra186_gpio_wakes[] = {
TEGRA_MAIN_GPIO(A, 6), /* wake0 */
TEGRA_MAIN_GPIO(A, 2), /* wake1 */
TEGRA_MAIN_GPIO(A, 5), /* wake2 */
TEGRA_MAIN_GPIO(D, 3), /* wake3 */
TEGRA_MAIN_GPIO(E, 3), /* wake4 */
TEGRA_MAIN_GPIO(G, 3), /* wake5 */
-EINVAL, /* wake6 */
TEGRA_MAIN_GPIO(B, 3), /* wake7 */
TEGRA_MAIN_GPIO(B, 5), /* wake8 */
TEGRA_MAIN_GPIO(C, 0), /* wake9 */
-EINVAL, /* wake10 */
TEGRA_MAIN_GPIO(H, 2), /* wake11 */
TEGRA_MAIN_GPIO(J, 5), /* wake12 */
TEGRA_MAIN_GPIO(J, 6), /* wake13 */
TEGRA_MAIN_GPIO(J, 7), /* wake14 */
TEGRA_MAIN_GPIO(K, 0), /* wake15 */
TEGRA_MAIN_GPIO(Q, 1), /* wake16 */
TEGRA_MAIN_GPIO(F, 4), /* wake17 */
TEGRA_MAIN_GPIO(M, 5), /* wake18 */
TEGRA_MAIN_GPIO(P, 0), /* wake19 */
TEGRA_MAIN_GPIO(P, 2), /* wake20 */
TEGRA_MAIN_GPIO(P, 1), /* wake21 */
TEGRA_MAIN_GPIO(O, 3), /* wake22 */
TEGRA_MAIN_GPIO(R, 5), /* wake23 */
-EINVAL, /* wake24 */
-EINVAL, /* wake25 */
-EINVAL, /* wake26 */
-EINVAL, /* wake27 */
TEGRA_MAIN_GPIO(F, 2), /* wake28 */
-EINVAL, /* wake29 */
-EINVAL, /* wake30 */
TEGRA_MAIN_GPIO(C, 6), /* wake31 */
-EINVAL, /* wake32 */
-EINVAL, /* wake33 */
-EINVAL, /* wake34 */
-EINVAL, /* wake35 */
-EINVAL, /* wake36 */
-EINVAL, /* wake37 */
-EINVAL, /* wake38 */
-EINVAL, /* wake39 */
-EINVAL, /* wake40 */
-EINVAL, /* wake41 */
-EINVAL, /* wake42 */
-EINVAL, /* wake43 */
-EINVAL, /* wake44 */
-EINVAL, /* wake45 */
-EINVAL, /* wake46 */
-EINVAL, /* wake47 */
-EINVAL, /* wake48 */
-EINVAL, /* wake49 */
-EINVAL, /* wake50 */
-EINVAL, /* wake51 */
TEGRA_MAIN_GPIO(X, 3), /* wake52 */
TEGRA_MAIN_GPIO(X, 7), /* wake53 */
TEGRA_MAIN_GPIO(Y, 0), /* wake54 */
TEGRA_MAIN_GPIO(Y, 1), /* wake55 */
TEGRA_MAIN_GPIO(Y, 2), /* wake56 */
TEGRA_MAIN_GPIO(Y, 5), /* wake57 */
TEGRA_MAIN_GPIO(Y, 6), /* wake58 */
TEGRA_MAIN_GPIO(L, 1), /* wake59 */
TEGRA_MAIN_GPIO(L, 3), /* wake60 */
TEGRA_MAIN_GPIO(L, 4), /* wake61 */
TEGRA_MAIN_GPIO(L, 5), /* wake62 */
TEGRA_MAIN_GPIO(I, 4), /* wake63 */
TEGRA_MAIN_GPIO(I, 6), /* wake64 */
-EINVAL, /* wake65 */
-EINVAL, /* wake66 */
-EINVAL, /* wake67 */
-EINVAL, /* wake68 */
-EINVAL, /* wake69 */
TEGRA_MAIN_GPIO(H, 3), /* wake70 */
TEGRA_MAIN_GPIO(P, 5), /* wake71 */
-EINVAL, /* wake72 */
-EINVAL, /* wake73 */
-EINVAL, /* wake74 */
-EINVAL, /* wake75 */
-EINVAL, /* wake76 */
-EINVAL, /* wake77 */
-EINVAL, /* wake78 */
-EINVAL, /* wake79 */
-EINVAL, /* wake80 */
-EINVAL, /* wake81 */
-EINVAL, /* wake82 */
-EINVAL, /* wake83 */
-EINVAL, /* wake84 */
-EINVAL, /* wake85 */
-EINVAL, /* wake86 */
-EINVAL, /* wake87 */
-EINVAL, /* wake88 */
-EINVAL, /* wake89 */
-EINVAL, /* wake90 */
-EINVAL, /* wake91 */
-EINVAL, /* wake92 */
-EINVAL, /* wake93 */
-EINVAL, /* wake94 */
-EINVAL, /* wake95 */
};
static const int tegra186_aon_gpio_wakes[] = {
-EINVAL, /* wake0 */
-EINVAL, /* wake1 */
-EINVAL, /* wake2 */
-EINVAL, /* wake3 */
-EINVAL, /* wake4 */
-EINVAL, /* wake5 */
-EINVAL, /* wake6 */
-EINVAL, /* wake7 */
-EINVAL, /* wake8 */
-EINVAL, /* wake9 */
TEGRA_AON_GPIO(S, 2), /* wake10 */
-EINVAL, /* wake11 */
-EINVAL, /* wake12 */
-EINVAL, /* wake13 */
-EINVAL, /* wake14 */
-EINVAL, /* wake15 */
-EINVAL, /* wake16 */
-EINVAL, /* wake17 */
-EINVAL, /* wake18 */
-EINVAL, /* wake19 */
-EINVAL, /* wake20 */
-EINVAL, /* wake21 */
-EINVAL, /* wake22 */
-EINVAL, /* wake23 */
-EINVAL, /* wake24 */
TEGRA_AON_GPIO(S, 3), /* wake25 */
TEGRA_AON_GPIO(S, 4), /* wake26 */
TEGRA_AON_GPIO(S, 1), /* wake27 */
-EINVAL, /* wake28 */
TEGRA_AON_GPIO(FF, 0), /* wake29 */
TEGRA_AON_GPIO(FF, 4), /* wake30 */
-EINVAL, /* wake31 */
TEGRA_AON_GPIO(W, 2), /* wake32 */
TEGRA_AON_GPIO(W, 5), /* wake33 */
TEGRA_AON_GPIO(W, 1), /* wake34 */
TEGRA_AON_GPIO(V, 0), /* wake35 */
TEGRA_AON_GPIO(V, 1), /* wake36 */
TEGRA_AON_GPIO(V, 2), /* wake37 */
TEGRA_AON_GPIO(V, 3), /* wake38 */
TEGRA_AON_GPIO(V, 4), /* wake39 */
TEGRA_AON_GPIO(V, 5), /* wake40 */
TEGRA_AON_GPIO(EE, 0), /* wake41 */
TEGRA_AON_GPIO(Z, 1), /* wake42 */
TEGRA_AON_GPIO(Z, 3), /* wake43 */
TEGRA_AON_GPIO(AA, 0), /* wake44 */
TEGRA_AON_GPIO(AA, 1), /* wake45 */
TEGRA_AON_GPIO(AA, 2), /* wake46 */
TEGRA_AON_GPIO(AA, 3), /* wake47 */
TEGRA_AON_GPIO(AA, 4), /* wake48 */
TEGRA_AON_GPIO(AA, 5), /* wake49 */
TEGRA_AON_GPIO(AA, 6), /* wake50 */
TEGRA_AON_GPIO(AA, 7), /* wake51 */
-EINVAL, /* wake52 */
-EINVAL, /* wake53 */
-EINVAL, /* wake54 */
-EINVAL, /* wake55 */
-EINVAL, /* wake56 */
-EINVAL, /* wake57 */
-EINVAL, /* wake58 */
-EINVAL, /* wake59 */
-EINVAL, /* wake60 */
-EINVAL, /* wake61 */
-EINVAL, /* wake62 */
-EINVAL, /* wake63 */
-EINVAL, /* wake64 */
TEGRA_AON_GPIO(Z, 0), /* wake65 */
TEGRA_AON_GPIO(Z, 2), /* wake66 */
TEGRA_AON_GPIO(FF, 1), /* wake67 */
TEGRA_AON_GPIO(FF, 2), /* wake68 */
TEGRA_AON_GPIO(FF, 3), /* wake69 */
-EINVAL, /* wake70 */
-EINVAL, /* wake71 */
-EINVAL, /* wake72 */
-EINVAL, /* wake73 */
-EINVAL, /* wake74 */
-EINVAL, /* wake75 */
-EINVAL, /* wake76 */
-EINVAL, /* wake77 */
-EINVAL, /* wake78 */
-EINVAL, /* wake79 */
-EINVAL, /* wake80 */
-EINVAL, /* wake81 */
-EINVAL, /* wake82 */
-EINVAL, /* wake83 */
-EINVAL, /* wake84 */
-EINVAL, /* wake85 */
-EINVAL, /* wake86 */
-EINVAL, /* wake87 */
-EINVAL, /* wake88 */
-EINVAL, /* wake89 */
-EINVAL, /* wake90 */
-EINVAL, /* wake91 */
-EINVAL, /* wake92 */
-EINVAL, /* wake93 */
-EINVAL, /* wake94 */
-EINVAL, /* wake95 */
};
struct tegra_gpio_port_soc_info {
const char *port_name;
int cont_id;
int port_index;
int valid_pins;
int reg_index;
int scr_offset;
u32 reg_offset;
};
#define TEGRA_MAIN_GPIO_PORT_INFO(port, cid, cind, npins) \
[TEGRA_MAIN_GPIO_PORT_##port] = { \
.port_name = #port, \
.cont_id = cid, \
.port_index = cind, \
.valid_pins = npins, \
.reg_index = 0, \
.scr_offset = cid * 0x1000 + cind * 0x40, \
.reg_offset = cid * 0x1000 + cind * 0x200, \
}
#define TEGRA_AON_GPIO_PORT_INFO(port, cid, cind, npins) \
[TEGRA_AON_GPIO_PORT_##port] = { \
.port_name = #port, \
.cont_id = cid, \
.port_index = cind, \
.valid_pins = npins, \
.reg_index = 1, \
.scr_offset = cind * 0x40, \
.reg_offset = cind * 0x200, \
}
static struct tegra_gpio_port_soc_info tegra186_gpio_cinfo[] = {
TEGRA_MAIN_GPIO_PORT_INFO(A, 2, 0, 7),
TEGRA_MAIN_GPIO_PORT_INFO(B, 3, 0, 7),
TEGRA_MAIN_GPIO_PORT_INFO(C, 3, 1, 7),
TEGRA_MAIN_GPIO_PORT_INFO(D, 3, 2, 6),
TEGRA_MAIN_GPIO_PORT_INFO(E, 2, 1, 8),
TEGRA_MAIN_GPIO_PORT_INFO(F, 2, 2, 6),
TEGRA_MAIN_GPIO_PORT_INFO(G, 4, 1, 6),
TEGRA_MAIN_GPIO_PORT_INFO(H, 1, 0, 7),
TEGRA_MAIN_GPIO_PORT_INFO(I, 0, 4, 8),
TEGRA_MAIN_GPIO_PORT_INFO(J, 5, 0, 8),
TEGRA_MAIN_GPIO_PORT_INFO(K, 5, 1, 1),
TEGRA_MAIN_GPIO_PORT_INFO(L, 1, 1, 8),
TEGRA_MAIN_GPIO_PORT_INFO(M, 5, 3, 6),
TEGRA_MAIN_GPIO_PORT_INFO(N, 0, 0, 7),
TEGRA_MAIN_GPIO_PORT_INFO(O, 0, 1, 4),
TEGRA_MAIN_GPIO_PORT_INFO(P, 4, 0, 7),
TEGRA_MAIN_GPIO_PORT_INFO(Q, 0, 2, 6),
TEGRA_MAIN_GPIO_PORT_INFO(R, 0, 5, 6),
TEGRA_MAIN_GPIO_PORT_INFO(T, 0, 3, 4),
TEGRA_MAIN_GPIO_PORT_INFO(X, 1, 2, 8),
TEGRA_MAIN_GPIO_PORT_INFO(Y, 1, 3, 7),
TEGRA_MAIN_GPIO_PORT_INFO(BB, 2, 3, 2),
TEGRA_MAIN_GPIO_PORT_INFO(CC, 5, 2, 4),
TEGRA_MAIN_GPIO_PORT_INFO(DD, -1, -1, 0),
};
static struct tegra_gpio_port_soc_info tegra186_aon_gpio_cinfo[] = {
TEGRA_AON_GPIO_PORT_INFO(S, 0, 1, 5),
TEGRA_AON_GPIO_PORT_INFO(U, 0, 2, 6),
TEGRA_AON_GPIO_PORT_INFO(V, 0, 4, 8),
TEGRA_AON_GPIO_PORT_INFO(W, 0, 5, 8),
TEGRA_AON_GPIO_PORT_INFO(Z, 0, 7, 4),
TEGRA_AON_GPIO_PORT_INFO(AA, 0, 6, 8),
TEGRA_AON_GPIO_PORT_INFO(EE, 0, 3, 3),
TEGRA_AON_GPIO_PORT_INFO(FF, 0, 0, 5),
};
#define TEGRA194_MAIN_GPIO_PORT_INFO(port, cid, cind, npins) \
[TEGRA194_MAIN_GPIO_PORT_##port] = { \
.port_name = #port, \
.cont_id = cid, \
.port_index = cind, \
.valid_pins = npins, \
.reg_index = 0, \
.scr_offset = cid * 0x1000 + cind * 0x40, \
.reg_offset = cid * 0x1000 + cind * 0x200, \
}
#define TEGRA194_AON_GPIO_PORT_INFO(port, cid, cind, npins) \
[TEGRA194_AON_GPIO_PORT_##port] = { \
.port_name = #port, \
.cont_id = cid, \
.port_index = cind, \
.valid_pins = npins, \
.reg_index = 1, \
.scr_offset = cind * 0x40, \
.reg_offset = cind * 0x200, \
}
static const int tegra194_gpio_wakes[] = {
TEGRA194_MAIN_GPIO(K, 4), /* wake0 */
TEGRA194_MAIN_GPIO(L, 2), /* wake1 */
-EINVAL, /* wake2 */
TEGRA194_MAIN_GPIO(J, 3), /* wake3 */
TEGRA194_MAIN_GPIO(N, 1), /* wake4 */
TEGRA194_MAIN_GPIO(O, 3), /* wake5 */
-EINVAL, /* wake6 */
TEGRA194_MAIN_GPIO(H, 6), /* wake7 */
TEGRA194_MAIN_GPIO(G, 7), /* wake8 */
TEGRA194_MAIN_GPIO(H, 1), /* wake9 */
-EINVAL, /* wake10 */
TEGRA194_MAIN_GPIO(C, 5), /* wake11 */
TEGRA194_MAIN_GPIO(S, 5), /* wake12 */
TEGRA194_MAIN_GPIO(S, 6), /* wake13 */
-EINVAL, /* wake14 */
TEGRA194_MAIN_GPIO(T, 0), /* wake15 */
TEGRA194_MAIN_GPIO(V, 1), /* wake16 */
TEGRA194_MAIN_GPIO(F, 4), /* wake17 */
TEGRA194_MAIN_GPIO(C, 7), /* wake18 */
TEGRA194_MAIN_GPIO(D, 3), /* wake19 */
TEGRA194_MAIN_GPIO(G, 4), /* wake20 */
-EINVAL, /* wake21 */
TEGRA194_MAIN_GPIO(P, 3), /* wake22 */
TEGRA194_MAIN_GPIO(C, 1), /* wake23 */
-EINVAL, /* wake24 */
-EINVAL, /* wake25 */
-EINVAL, /* wake26 */
-EINVAL, /* wake27 */
TEGRA194_MAIN_GPIO(F, 2), /* wake28 */
-EINVAL, /* wake29 */
TEGRA194_MAIN_GPIO(G, 3), /* wake30 */
TEGRA194_MAIN_GPIO(I, 4), /* wake31 */
-EINVAL, /* wake32 */
TEGRA194_MAIN_GPIO(R, 5), /* wake33 */
TEGRA194_MAIN_GPIO(P, 4), /* wake34 */
TEGRA194_MAIN_GPIO(Q, 0), /* wake35 */
TEGRA194_MAIN_GPIO(P, 5), /* wake36 */
TEGRA194_MAIN_GPIO(P, 6), /* wake37 */
TEGRA194_MAIN_GPIO(Q, 3), /* wake38 */
-EINVAL, /* wake39 */
TEGRA194_MAIN_GPIO(Q, 1), /* wake40 */
-EINVAL, /* wake41 */
-EINVAL, /* wake42 */
-EINVAL, /* wake43 */
TEGRA194_MAIN_GPIO(Y, 0), /* wake44 */
TEGRA194_MAIN_GPIO(Z, 6), /* wake45 */
-EINVAL, /* wake46 */
-EINVAL, /* wake47 */
-EINVAL, /* wake48 */
-EINVAL, /* wake49 */
TEGRA194_MAIN_GPIO(Z, 7), /* wake50 */
TEGRA194_MAIN_GPIO(Q, 2), /* wake51 */
TEGRA194_MAIN_GPIO(X, 7), /* wake52 */
TEGRA194_MAIN_GPIO(Z, 0), /* wake53 */
TEGRA194_MAIN_GPIO(K, 2), /* wake54 */
TEGRA194_MAIN_GPIO(L, 0), /* wake55 */
TEGRA194_MAIN_GPIO(Y, 3), /* wake56 */
TEGRA194_MAIN_GPIO(L, 3), /* wake57 */
TEGRA194_MAIN_GPIO(Y, 4), /* wake58 */
TEGRA194_MAIN_GPIO(M, 7), /* wake59 */
TEGRA194_MAIN_GPIO(M, 0), /* wake60 */
TEGRA194_MAIN_GPIO(Z, 1), /* wake61 */
TEGRA194_MAIN_GPIO(Z, 2), /* wake62 */
TEGRA194_MAIN_GPIO(M, 1), /* wake63 */
TEGRA194_MAIN_GPIO(N, 2), /* wake64 */
TEGRA194_MAIN_GPIO(K, 6), /* wake65 */
TEGRA194_MAIN_GPIO(M, 3), /* wake66 */
TEGRA194_MAIN_GPIO(G, 0), /* wake67 */
TEGRA194_MAIN_GPIO(G, 1), /* wake68 */
TEGRA194_MAIN_GPIO(G, 2), /* wake69 */
TEGRA194_MAIN_GPIO(M, 4), /* wake70 */
TEGRA194_MAIN_GPIO(M, 2), /* wake71 */
-EINVAL, /* wake72 */
-EINVAL, /* wake73 */
-EINVAL, /* wake74 */
-EINVAL, /* wake75 */
-EINVAL, /* wake76 */
-EINVAL, /* wake77 */
-EINVAL, /* wake78 */
-EINVAL, /* wake79 */
-EINVAL, /* wake80 */
-EINVAL, /* wake81 */
-EINVAL, /* wake82 */
-EINVAL, /* wake83 */
-EINVAL, /* wake84 */
-EINVAL, /* wake85 */
-EINVAL, /* wake86 */
-EINVAL, /* wake87 */
-EINVAL, /* wake88 */
-EINVAL, /* wake89 */
-EINVAL, /* wake90 */
-EINVAL, /* wake91 */
-EINVAL, /* wake92 */
-EINVAL, /* wake93 */
-EINVAL, /* wake94 */
-EINVAL, /* wake95 */
};
static const int tegra194_aon_gpio_wakes[] = {
-EINVAL, /* wake0 */
-EINVAL, /* wake1 */
TEGRA194_AON_GPIO(EE, 2), /* wake2 */
-EINVAL, /* wake3 */
-EINVAL, /* wake4 */
-EINVAL, /* wake5 */
-EINVAL, /* wake6 */
-EINVAL, /* wake7 */
-EINVAL, /* wake8 */
-EINVAL, /* wake9 */
TEGRA194_AON_GPIO(EE, 3), /* wake10 */
-EINVAL, /* wake11 */
-EINVAL, /* wake12 */
-EINVAL, /* wake13 */
-EINVAL, /* wake14 */
-EINVAL, /* wake15 */
-EINVAL, /* wake16 */
-EINVAL, /* wake17 */
-EINVAL, /* wake18 */
-EINVAL, /* wake19 */
-EINVAL, /* wake20 */
TEGRA194_AON_GPIO(DD, 2), /* wake21 */
-EINVAL, /* wake22 */
-EINVAL, /* wake23 */
-EINVAL, /* wake24 */
TEGRA194_AON_GPIO(EE, 0), /* wake25 */
TEGRA194_AON_GPIO(EE, 1), /* wake26 */
TEGRA194_AON_GPIO(EE, 6), /* wake27 */
-EINVAL, /* wake28 */
TEGRA194_AON_GPIO(EE, 4), /* wake29 */
-EINVAL, /* wake30 */
-EINVAL, /* wake31 */
-EINVAL, /* wake32 */
-EINVAL, /* wake33 */
-EINVAL, /* wake34 */
-EINVAL, /* wake35 */
-EINVAL, /* wake36 */
-EINVAL, /* wake37 */
-EINVAL, /* wake38 */
TEGRA194_AON_GPIO(CC, 3), /* wake39 */
-EINVAL, /* wake40 */
TEGRA194_AON_GPIO(DD, 0), /* wake41 */
TEGRA194_AON_GPIO(AA, 1), /* wake42 */
TEGRA194_AON_GPIO(AA, 3), /* wake43 */
-EINVAL, /* wake44 */
-EINVAL, /* wake45 */
TEGRA194_AON_GPIO(AA, 6), /* wake46 */
TEGRA194_AON_GPIO(BB, 3), /* wake47 */
TEGRA194_AON_GPIO(BB, 2), /* wake48 */
TEGRA194_AON_GPIO(AA, 7), /* wake49 */
-EINVAL, /* wake50 */
-EINVAL, /* wake51 */
-EINVAL, /* wake52 */
-EINVAL, /* wake53 */
-EINVAL, /* wake54 */
-EINVAL, /* wake55 */
-EINVAL, /* wake56 */
-EINVAL, /* wake57 */
-EINVAL, /* wake58 */
-EINVAL, /* wake59 */
-EINVAL, /* wake60 */
-EINVAL, /* wake61 */
-EINVAL, /* wake62 */
-EINVAL, /* wake63 */
-EINVAL, /* wake64 */
-EINVAL, /* wake65 */
-EINVAL, /* wake66 */
-EINVAL, /* wake67 */
-EINVAL, /* wake68 */
-EINVAL, /* wake69 */
-EINVAL, /* wake70 */
-EINVAL, /* wake71 */
-EINVAL, /* wake72 */
-EINVAL, /* wake73 */
-EINVAL, /* wake74 */
-EINVAL, /* wake75 */
-EINVAL, /* wake76 */
-EINVAL, /* wake77 */
-EINVAL, /* wake78 */
-EINVAL, /* wake79 */
-EINVAL, /* wake80 */
-EINVAL, /* wake81 */
-EINVAL, /* wake82 */
-EINVAL, /* wake83 */
-EINVAL, /* wake84 */
-EINVAL, /* wake85 */
-EINVAL, /* wake86 */
-EINVAL, /* wake87 */
-EINVAL, /* wake88 */
-EINVAL, /* wake89 */
-EINVAL, /* wake90 */
-EINVAL, /* wake91 */
-EINVAL, /* wake92 */
-EINVAL, /* wake93 */
-EINVAL, /* wake94 */
-EINVAL, /* wake95 */
};
static struct tegra_gpio_port_soc_info tegra194_gpio_cinfo[] = {
TEGRA194_MAIN_GPIO_PORT_INFO(A, 1, 2, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(B, 4, 7, 2),
TEGRA194_MAIN_GPIO_PORT_INFO(C, 4, 3, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(D, 4, 4, 4),
TEGRA194_MAIN_GPIO_PORT_INFO(E, 4, 5, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(F, 4, 6, 6),
TEGRA194_MAIN_GPIO_PORT_INFO(G, 4, 0, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(H, 4, 1, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(I, 4, 2, 5),
TEGRA194_MAIN_GPIO_PORT_INFO(J, 5, 1, 6),
TEGRA194_MAIN_GPIO_PORT_INFO(K, 3, 0, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(L, 3, 1, 4),
TEGRA194_MAIN_GPIO_PORT_INFO(M, 2, 3, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(N, 2, 4, 3),
TEGRA194_MAIN_GPIO_PORT_INFO(O, 5, 0, 6),
TEGRA194_MAIN_GPIO_PORT_INFO(P, 2, 5, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(Q, 2, 6, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(R, 2, 7, 6),
TEGRA194_MAIN_GPIO_PORT_INFO(S, 3, 3, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(T, 3, 4, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(U, 3, 5, 1),
TEGRA194_MAIN_GPIO_PORT_INFO(V, 1, 0, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(W, 1, 1, 2),
TEGRA194_MAIN_GPIO_PORT_INFO(X, 2, 0, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(Y, 2, 1, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(Z, 2, 2, 8),
TEGRA194_MAIN_GPIO_PORT_INFO(FF, 3, 2, 2),
TEGRA194_MAIN_GPIO_PORT_INFO(GG, 0, 0, 2),
};
static struct tegra_gpio_port_soc_info tegra194_aon_gpio_cinfo[] = {
TEGRA194_AON_GPIO_PORT_INFO(AA, 0, 3, 8),
TEGRA194_AON_GPIO_PORT_INFO(BB, 0, 4, 4),
TEGRA194_AON_GPIO_PORT_INFO(CC, 0, 1, 8),
TEGRA194_AON_GPIO_PORT_INFO(DD, 0, 2, 3),
TEGRA194_AON_GPIO_PORT_INFO(EE, 0, 0, 7),
};
struct tegra_gpio_info;
struct tegra_gpio_soc_info {
const char *name;
const char *debug_fs_name;
const struct tegra_gpio_port_soc_info *port;
int nports;
const int *wake_table;
int nwakes;
const struct tegra_gte_info *gte_info;
int gte_npins;
int num_irq_line;
int num_banks;
int start_irq_line;
bool do_vm_check;
};
struct tegra_gpio_irq_info {
int hw_irq;
int sw_irq;
bool valid;
u32 irq_map[MAX_GPIO_PORTS];;
};
struct tegra_gpio_controller {
int bank;
int irq[MAX_IRQS];
struct tegra_gpio_info *tgi;
struct tegra_gpio_irq_info irq_info[MAX_IRQS];
unsigned long int_state[MAX_GPIO_IRQS];
int num_ports;
};
struct tegra_gpio_state {
bool restore_needed;
u32 val;
u32 conf;
u32 out;
};
struct tegra_gpio_info {
struct device *dev;
int nbanks;
void __iomem *gpio_regs;
void __iomem *scr_regs;
void __iomem *gte_regs;
struct irq_domain *irq_domain;
const struct tegra_gpio_soc_info *soc;
struct tegra_gpio_controller tg_contrlr[MAX_GPIO_CONTROLLERS];
struct gpio_chip gc;
struct irq_chip ic;
struct tegra_gpio_state *state_suspend;
struct tegra_gpio_state *state_init;
unsigned int gte_enable;
bool use_timestamp;
bool use_ext_gte_timestamp;
};
static struct lock_class_key gpio_lock_class;
/*************************** GTE related code ********************/
struct tegra_gte_info {
uint32_t pin_num;
uint32_t slice;
uint32_t slice_bit;
};
/* Structure to maintain all information about the AON GPIOs
* that can be supported
*/
static struct tegra_gte_info tegra194_gte_info[] = {
/* pin_num, slice, slice_bit*/
[0] = {11, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_0},
[1] = {10, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_1},
[2] = {9, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_2},
[3] = {8, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_3},
[4] = {7, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_4},
[5] = {6, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_5},
[6] = {5, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_6},
[7] = {4, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_7},
[8] = {3, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_8},
[9] = {2, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_9},
[10] = {1, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_10},
[11] = {0, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_11},
[12] = {26, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_12},
[13] = {25, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_13},
[14] = {24, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_14},
[15] = {23, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_15},
[16] = {22, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_16},
[17] = {21, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_17},
[18] = {20, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_18},
[19] = {19, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_19},
[20] = {18, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_20},
[21] = {17, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_21},
[22] = {16, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_22},
[23] = {38, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_23},
[24] = {37, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_24},
[25] = {36, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_25},
[26] = {35, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_26},
[27] = {34, 2, NV_AON_GTE_SLICE2_IRQ_GPIO_27},
[28] = {33, 1, NV_AON_GTE_SLICE1_IRQ_GPIO_28},
[29] = {32, 1, NV_AON_GTE_SLICE1_IRQ_GPIO_29},
};
static inline u32 tegra_gte_readl(struct tegra_gpio_info *tgi, u32 reg)
{
return __raw_readl(tgi->gte_regs + reg);
}
static inline void tegra_gte_writel(struct tegra_gpio_info *tgi, u32 reg,
u32 val)
{
__raw_writel(val, tgi->gte_regs + reg);
}
static void tegra_gte_flush_fifo(struct tegra_gpio_info *tgi)
{
/* Check if FIFO is empty */
while ((tegra_gte_readl(tgi, GTE_GPIO_TESTATUS) >>
GTE_GPIO_TESTATUS_OCCUPANCY_SHIFT) &
GTE_GPIO_TESTATUS_OCCUPANCY_MASK) {
/* Pop this entry, go to next */
tegra_gte_writel(tgi, GTE_GPIO_TECMD, GTE_GPIO_TECMD_CMD_POP);
}
}
u64 tegra_gte_read_fifo(struct tegra_gpio_info *tgi, u32 offset)
{
u32 src_slice;
u32 tsh, tsl;
u64 ts = 0;
u32 precv, curcv, xorcv;
u32 aon_bits;
u32 bit_index = 0;
/* Check if FIFO is empty */
while ((tegra_gte_readl(tgi, GTE_GPIO_TESTATUS) >>
GTE_GPIO_TESTATUS_OCCUPANCY_SHIFT) &
GTE_GPIO_TESTATUS_OCCUPANCY_MASK) {
src_slice = (tegra_gte_readl(tgi, GTE_GPIO_TESRC) >>
GTE_GPIO_TESRC_SLICE_SHIFT) &
GTE_GPIO_TESRC_SLICE_DEFAULT_MASK;
if (src_slice == AON_GPIO_SLICE1_INDEX ||
src_slice == AON_GPIO_SLICE2_INDEX) {
precv = tegra_gte_readl(tgi, GTE_GPIO_TEPCV);
curcv = tegra_gte_readl(tgi, GTE_GPIO_TECCV);
/* Save TSC high and low 32 bits value */
tsh = tegra_gte_readl(tgi, GTE_GPIO_TETSCH);
tsl = tegra_gte_readl(tgi, GTE_GPIO_TETSCL);
/* TSC countre as 64 bits */
ts = (((uint64_t)tsh << 32) | tsl);
xorcv = precv ^ curcv;
if (src_slice == AON_GPIO_SLICE1_INDEX)
aon_bits = xorcv & AON_GPIO_SLICE1_MAP;
else
aon_bits = xorcv & AON_GPIO_SLICE2_MAP;
bit_index = ffs(aon_bits) - 1;
}
/* Pop this entry, go to next */
tegra_gte_writel(tgi, GTE_GPIO_TECMD, GTE_GPIO_TECMD_CMD_POP);
tegra_gte_readl(tgi, GTE_GPIO_TESRC);
}
return (tgi->soc->gte_info[bit_index].pin_num == offset) ? ts : 0;
}
int tegra_gte_enable_ts(struct tegra_gpio_info *tgi, u32 offset)
{
u32 val, mask, reg;
int i = 0;
if (tgi->gte_enable == 1) {
dev_err(tgi->dev, "timestamp is already enabled for gpio\n");
return -EINVAL;
}
/* Configure Timestamping AON GPIO to SLICEx mapping */
for (i = 0; i < tgi->soc->gte_npins; i++) {
if (tgi->soc->gte_info[i].pin_num == offset) {
reg = (tgi->soc->gte_info[i].slice *
GTE_GPIO_SLICE_SIZE) + GTE_GPIO_SLICE0_TETEN;
val = (1 << tgi->soc->gte_info[i].slice_bit);
tegra_gte_writel(tgi, reg, val);
break;
}
}
val = tegra_gte_readl(tgi, GTE_GPIO_TECTRL);
mask = (GTE_GPIO_TECTRL_ENABLE_MASK << GTE_GPIO_TECTRL_ENABLE_SHIFT);
val &= ~mask;
val |= (GTE_GPIO_TECTRL_ENABLE_ENABLE << GTE_GPIO_TECTRL_ENABLE_SHIFT);
tegra_gte_writel(tgi, GTE_GPIO_TECTRL, val);
tegra_gte_flush_fifo(tgi);
tgi->gte_enable = 1;
return 0;
}
int tegra_gte_disable_ts(struct tegra_gpio_info *tgi, u32 offset)
{
u32 val, mask;
if (tgi->gte_enable == 0) {
dev_err(tgi->dev, "timestamp is already disabled\n");
return 0;
}
val = tegra_gte_readl(tgi, GTE_GPIO_TECTRL);
mask = (GTE_GPIO_TECTRL_ENABLE_MASK << GTE_GPIO_TECTRL_ENABLE_SHIFT);
val &= ~mask;
val |= (GTE_GPIO_TECTRL_ENABLE_DISABLE << GTE_GPIO_TECTRL_ENABLE_SHIFT);
tegra_gte_writel(tgi, GTE_GPIO_TECTRL, val);
/* Disable Slice mapping as well */
tegra_gte_writel(tgi, (AON_GPIO_SLICE1_INDEX * GTE_GPIO_SLICE_SIZE) +
GTE_GPIO_SLICE0_TETEN, 0);
tegra_gte_writel(tgi, (AON_GPIO_SLICE2_INDEX * GTE_GPIO_SLICE_SIZE) +
GTE_GPIO_SLICE0_TETEN, 0);
tgi->gte_enable = 0;
return 0;
}
int tegra_gte_setup(struct tegra_gpio_info *tgi)
{
tegra_gte_writel(tgi, GTE_GPIO_TECTRL, 0);
tgi->gte_enable = 0;
return 0;
}
/*****************************************************************/
static int tegra186_gpio_to_wake(struct tegra_gpio_info *tgi, int gpio)
{
int i;
for (i = 0; i < tgi->soc->nwakes; i++) {
if (tgi->soc->wake_table[i] == gpio) {
pr_info("gpio %s wake%d for gpio=%d(%s:%d)\n",
tgi->soc->name, i, gpio,
tgi->soc->port[GPIO_PORT(gpio)].port_name,
GPIO_PIN(gpio));
return i;
}
}
return -EINVAL;
}
#define GPIO_CNTRL_REG(tgi, gpio, roffset) \
((tgi)->gpio_regs + (tgi)->soc->port[GPIO_PORT(gpio)].reg_offset + \
(GPIO_REG_DIFF * GPIO_PIN(gpio)) + (roffset))
static inline u32 tegra_gpio_readl(struct tegra_gpio_info *tgi, u32 gpio,
u32 reg_offset)
{
return __raw_readl(GPIO_CNTRL_REG(tgi, gpio, reg_offset));
}
static inline void tegra_gpio_writel(struct tegra_gpio_info *tgi, u32 val,
u32 gpio, u32 reg_offset)
{
__raw_writel(val, GPIO_CNTRL_REG(tgi, gpio, reg_offset));
}
static inline void tegra_gpio_update(struct tegra_gpio_info *tgi, u32 gpio,
u32 reg_offset, u32 mask, u32 val)
{
u32 rval;
rval = __raw_readl(GPIO_CNTRL_REG(tgi, gpio, reg_offset));
rval = (rval & ~mask) | (val & mask);
__raw_writel(rval, GPIO_CNTRL_REG(tgi, gpio, reg_offset));
}
/* This function will return if the GPIO is accessible by CPU */
static inline bool gpio_is_accessible(struct tegra_gpio_info *tgi, u32 offset)
{
int port = GPIO_PORT(offset);
int pin = GPIO_PIN(offset);
u32 val;
int cont_id;
u32 scr_offset = tgi->soc->port[port].scr_offset;
if (pin >= tgi->soc->port[port].valid_pins)
return false;
cont_id = tgi->soc->port[port].cont_id;
if (cont_id < 0)
return false;
if (tgi->soc->do_vm_check) {
val = __raw_readl(tgi->scr_regs + scr_offset +
(pin * GPIO_SCR_DIFF) + GPIO_VM_REG);
if ((val & GPIO_VM_RW) != GPIO_VM_RW)
return false;
}
val = __raw_readl(tgi->scr_regs + scr_offset +
(pin * GPIO_SCR_DIFF) + GPIO_SCR_REG);
if ((val & GPIO_SCR_SEC_ENABLE) == 0)
return true;
if ((val & GPIO_FULL_ACCESS) == GPIO_FULL_ACCESS)
return true;
return false;
}
static void tegra_gpio_save_gpio_state(struct tegra_gpio_info *tgi, u32 offset)
{
struct tegra_gpio_state *regs;
regs = &tgi->state_init[offset];
regs->conf = tegra_gpio_readl(tgi, offset, GPIO_ENB_CONFIG_REG);
regs->out = tegra_gpio_readl(tgi, offset, GPIO_OUT_CTRL_REG);
regs->val = tegra_gpio_readl(tgi, offset, GPIO_OUT_VAL_REG);
}
static void tegra_gpio_restore_gpio_state(struct tegra_gpio_info *tgi,
u32 offset)
{
struct tegra_gpio_state *regs;
int was_gpio, was_output;
regs = &tgi->state_init[offset];
was_gpio = regs->conf & 0x1;
was_output = regs->conf & 0x2;
/*
* If pin was GPIO and pin direction was OUT then restore GPIO_OUT_VAL
* first then GPIO_OUT_CTRL and then GPIO_CNF
*/
if (was_gpio & was_output) {
tegra_gpio_writel(tgi, regs->val, offset, GPIO_OUT_VAL_REG);
tegra_gpio_writel(tgi, regs->out, offset, GPIO_OUT_CTRL_REG);
tegra_gpio_writel(tgi, regs->conf, offset, GPIO_ENB_CONFIG_REG);
}
/*
* If pin was GPIO and pin direction was IN then restore GPIO_OUT_CTRL,
* then GPIO_OUT_VAL and then GPIO_CNF
*/
else if (was_gpio) {
tegra_gpio_writel(tgi, regs->out, offset, GPIO_OUT_CTRL_REG);
tegra_gpio_writel(tgi, regs->val, offset, GPIO_OUT_VAL_REG);
tegra_gpio_writel(tgi, regs->conf, offset, GPIO_ENB_CONFIG_REG);
}
/*
* If pin is SFIO then restore GPIO_CNF, then GPIO_OUT_CTRL and then
* GPIO_OUT_VAL
*/
else {
tegra_gpio_writel(tgi, regs->conf, offset, GPIO_ENB_CONFIG_REG);
tegra_gpio_writel(tgi, regs->out, offset, GPIO_OUT_CTRL_REG);
tegra_gpio_writel(tgi, regs->val, offset, GPIO_OUT_VAL_REG);
}
}
static void tegra_gpio_enable(struct tegra_gpio_info *tgi, int gpio)
{
tegra_gpio_update(tgi, gpio, GPIO_ENB_CONFIG_REG, GPIO_ENB_BIT, 0x1);
}
static int tegra_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
if (!gpio_is_accessible(tgi, offset))
return -EBUSY;
tegra_gpio_save_gpio_state(tgi, offset);
return pinctrl_request_gpio(chip->base + offset);
}
static void tegra_gpio_free(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
pinctrl_free_gpio(chip->base + offset);
tegra_gpio_restore_gpio_state(tgi, offset);
}
static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
u32 val = (value) ? 0x1 : 0x0;
tegra_gpio_writel(tgi, val, offset, GPIO_OUT_VAL_REG);
}
static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
u32 val;
val = tegra_gpio_readl(tgi, offset, GPIO_ENB_CONFIG_REG);
if (val & GPIO_INOUT_BIT)
return tegra_gpio_readl(tgi, offset, GPIO_OUT_VAL_REG) & 0x1;
return tegra_gpio_readl(tgi, offset, GPIO_INPUT_REG) & 0x1;
}
static void set_gpio_direction_mode(struct gpio_chip *chip, u32 offset,
bool mode)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
u32 val;
val = tegra_gpio_readl(tgi, offset, GPIO_ENB_CONFIG_REG);
if (mode)
val |= GPIO_INOUT_BIT;
else
val &= ~GPIO_INOUT_BIT;
tegra_gpio_writel(tgi, val, offset, GPIO_ENB_CONFIG_REG);
}
static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
int ret;
set_gpio_direction_mode(chip, offset, 0);
tegra_gpio_enable(tgi, offset);
ret = pinctrl_gpio_direction_input(chip->base + offset);
if (ret < 0)
dev_err(chip->parent, "Failed to set input direction: %d\n",
ret);
return ret;
}
static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
int ret;
tegra_gpio_set(chip, offset, value);
tegra_gpio_writel(tgi, 0, offset, GPIO_OUT_CTRL_REG);
set_gpio_direction_mode(chip, offset, 1);
tegra_gpio_enable(tgi, offset);
ret = pinctrl_gpio_direction_output(chip->base + offset);
if (ret < 0)
dev_err(chip->parent, "Failed to set output direction: %d\n",
ret);
return ret;
}
int tegra_gpio_enable_external_gte(struct gpio_chip *chip)
{
struct tegra_gpio_info *tgi;
if (!chip)
return -EOPNOTSUPP;
tgi = gpiochip_get_data(chip);
tgi->use_ext_gte_timestamp = true;
return 0;
}
static int tegra_gpio_timestamp_control(struct gpio_chip *chip, unsigned offset,
int enable)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
u32 val = enable << GPIO_TIMESTAMP_FUNC_BIT;
u32 mask = BIT(GPIO_TIMESTAMP_FUNC_BIT);
int ret = 0;
if (tgi->use_timestamp || tgi->use_ext_gte_timestamp) {
tegra_gpio_update(tgi, offset, GPIO_ENB_CONFIG_REG, mask, val);
if (tgi->use_timestamp) {
if (enable)
ret = tegra_gte_enable_ts(tgi, offset);
else
ret = tegra_gte_disable_ts(tgi, offset);
}
} else
ret = -EOPNOTSUPP;
return ret;
}
static int tegra_gpio_timestamp_read(struct gpio_chip *chip, unsigned offset,
u64 *ts)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
int ret;
if (tgi->use_timestamp) {
*ts = tegra_gte_read_fifo(tgi, offset);
ret = 0;
} else
ret = -EOPNOTSUPP;
return ret;
}
static int tegra_gpio_suspend_configure(struct gpio_chip *chip, unsigned offset,
enum gpiod_flags dflags)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
struct tegra_gpio_state *regs;
if (!gpio_is_accessible(tgi, offset))
return -EBUSY;
regs = &tgi->state_suspend[offset];
regs->conf = tegra_gpio_readl(tgi, offset, GPIO_ENB_CONFIG_REG),
regs->out = tegra_gpio_readl(tgi, offset, GPIO_OUT_CTRL_REG),
regs->val = tegra_gpio_readl(tgi, offset, GPIO_OUT_VAL_REG),
pinctrl_gpio_save_config(tgi->gc.base + offset);
regs->restore_needed = true;
if (dflags & GPIOD_FLAGS_BIT_DIR_OUT)
return tegra_gpio_direction_output(chip, offset,
dflags & GPIOD_FLAGS_BIT_DIR_VAL);
return tegra_gpio_direction_input(chip, offset);
}
static int tegra_gpio_set_debounce(struct gpio_chip *chip, unsigned offset,
unsigned debounce)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
unsigned dbc_ms = DIV_ROUND_UP(debounce, 1000);
tegra_gpio_update(tgi, offset, GPIO_ENB_CONFIG_REG, GPIO_ENB_BIT, 0x1);
tegra_gpio_update(tgi, offset, GPIO_ENB_CONFIG_REG,
GPIO_DEB_FUNC_BIT, GPIO_DEB_FUNC_BIT);
/* Update debounce threshold, GPIO controller support maximum
* 255ms debounce
*/
if (dbc_ms > 255)
dbc_ms = 255;
tegra_gpio_writel(tgi, dbc_ms, offset, GPIO_DBC_THRES_REG);
return 0;
}
#if KERNEL_VERSION(4, 13, 0) < LINUX_VERSION_CODE
static int tegra_gpio_set_config(struct gpio_chip *chip, unsigned offset,
unsigned long config)
{
if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
return -ENOTSUPP;
tegra_gpio_set_debounce(chip, offset,
pinconf_to_config_argument(config));
return 0;
}
#endif
static int tegra_gpio_is_enabled(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
u32 val;
if (!gpio_is_accessible(tgi, offset))
return -EPERM;
val = tegra_gpio_readl(tgi, offset, GPIO_ENB_CONFIG_REG);
return !!(val & GPIO_ENB_BIT);
}
static int tegra_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
u32 val;
if (!gpio_is_accessible(tgi, offset))
return -EPERM;
val = tegra_gpio_readl(tgi, offset, GPIO_ENB_CONFIG_REG);
val &= GPIO_INOUT_BIT;
return !val;
}
static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
struct tegra_gpio_info *tgi = gpiochip_get_data(chip);
return irq_find_mapping(tgi->irq_domain, offset);
}
static void tegra_gpio_irq_ack(struct irq_data *d)
{
struct tegra_gpio_controller *ctrlr = irq_data_get_irq_chip_data(d);
tegra_gpio_writel(ctrlr->tgi, 1, d->hwirq, GPIO_INT_CLEAR_REG);
}
static void tegra_gpio_irq_mask(struct irq_data *d)
{
struct tegra_gpio_controller *c = irq_data_get_irq_chip_data(d);
tegra_gpio_update(c->tgi, d->hwirq, GPIO_ENB_CONFIG_REG,
GPIO_INT_FUNC_BIT, 0);
c->int_state[d->hwirq] &= ~GPIO_INTERRUPT_UNMASK_ENABLE;
}
static void tegra_gpio_irq_unmask(struct irq_data *d)
{
struct tegra_gpio_controller *c = irq_data_get_irq_chip_data(d);
tegra_gpio_update(c->tgi, d->hwirq, GPIO_ENB_CONFIG_REG,
GPIO_INT_FUNC_BIT, GPIO_INT_FUNC_BIT);
c->int_state[d->hwirq] |= GPIO_INTERRUPT_UNMASK_ENABLE;
}
static void tegra_gpio_irq_bus_sync_unlock(struct irq_data *d)
{
struct tegra_gpio_controller *c = irq_data_get_irq_chip_data(d);
struct gpio_chip *chip = &c->tgi->gc;
int ret;
if (!(c->int_state[d->hwirq] & GPIO_INTERRUPT_UNMASK_ENABLE))
return;
if (c->int_state[d->hwirq] & GPIO_PIN_DIRECTION_INPUT)
return;
ret = tegra_gpio_direction_input(chip, d->hwirq);
if (ret < 0) {
dev_err(chip->parent,
"Failed to set input direction for pin %lu: %d\n",
d->hwirq, ret);
return;
}
c->int_state[d->hwirq] |= GPIO_PIN_DIRECTION_INPUT;
}
static int tegra_gpio_irq_set_type(struct irq_data *d, unsigned int type)
{
struct tegra_gpio_controller *ctrlr = irq_data_get_irq_chip_data(d);
int gpio = d->hwirq;
u32 lvl_type;
u32 trg_type;
u32 val;
int wake = tegra186_gpio_to_wake(ctrlr->tgi, d->hwirq);
switch (type & IRQ_TYPE_SENSE_MASK) {
case IRQ_TYPE_EDGE_RISING:
trg_type = TRIGGER_LEVEL_HIGH;
lvl_type = GPIO_INT_LVL_SINGLE_EDGE_TRIGGER;
break;
case IRQ_TYPE_EDGE_FALLING:
trg_type = TRIGGER_LEVEL_LOW;
lvl_type = GPIO_INT_LVL_SINGLE_EDGE_TRIGGER;
break;
case IRQ_TYPE_EDGE_BOTH:
lvl_type = GPIO_INT_LVL_BOTH_EDGE_TRIGGER;
trg_type = 0;
break;
case IRQ_TYPE_LEVEL_HIGH:
trg_type = TRIGGER_LEVEL_HIGH;
lvl_type = GPIO_INT_LVL_LEVEL_TRIGGER;
break;
case IRQ_TYPE_LEVEL_LOW:
trg_type = TRIGGER_LEVEL_LOW;
lvl_type = GPIO_INT_LVL_LEVEL_TRIGGER;
break;
default:
return -EINVAL;
}
trg_type = trg_type << 0x4;
lvl_type = lvl_type << 0x2;
/* Clear and Program the values */
val = tegra_gpio_readl(ctrlr->tgi, gpio, GPIO_ENB_CONFIG_REG);
val &= ~((0x3 << GPIO_TRG_TYPE_BIT_OFFSET) | (GPIO_TRG_LVL_BIT));
val |= trg_type | lvl_type;
tegra_gpio_writel(ctrlr->tgi, val, gpio, GPIO_ENB_CONFIG_REG);
tegra_gpio_enable(ctrlr->tgi, gpio);
if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
irq_set_handler_locked(d, handle_level_irq);
else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
irq_set_handler_locked(d, handle_edge_irq);
if (wake >= 0)
tegra_pm_irq_set_wake_type(wake, type);
return 0;
}
static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
{
struct tegra_gpio_controller *ctrlr = irq_data_get_irq_chip_data(d);
int wake = tegra186_gpio_to_wake(ctrlr->tgi, d->hwirq);
int ret;
if (wake < 0)
return wake;
ret = tegra_pm_irq_set_wake(wake, enable);
if (ret)
pr_err("Failed gpio lp0 %s for irq=%d, error=%d\n",
(enable ? "enable" : "disable"), d->irq, ret);
return ret;
}
static void tegra_gpio_irq_handler_desc(struct irq_desc *desc)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
struct tegra_gpio_controller *tg_cont = irq_desc_get_handler_data(desc);
struct tegra_gpio_info *tgi = tg_cont->tgi;
unsigned int irq = irq_desc_get_irq(desc);
int pin;
int port;
int i;
unsigned long val;
u32 addr;
int port_map[MAX_GPIO_PORTS];
unsigned int irq_offset, irq_index;
for (i = 0; i < MAX_GPIO_PORTS; ++i)
port_map[i] = -1;
for (i = 0; i < tgi->soc->nports; ++i) {
if (tgi->soc->port[i].cont_id == tg_cont->bank)
port_map[tgi->soc->port[i].port_index] = i;
}
irq_index = 0;
chained_irq_enter(chip, desc);
if (tgi->soc->num_irq_line <= 1)
goto single_line_irq;
for (i = 0; i < tgi->soc->num_irq_line; i++) {
irq_offset = i + tgi->soc->start_irq_line;
if (!tg_cont->irq_info[irq_offset].valid)
continue;
if (tg_cont->irq_info[irq_offset].sw_irq == irq) {
irq_index = irq_offset;
break;
}
}
if (i == tgi->soc->num_irq_line) {
dev_err(tgi->dev, "IRQ %u is not mapped\n", irq);
goto done;
}
single_line_irq:
for (i = 0; i < MAX_GPIO_PORTS; i++) {
port = port_map[i];
if (port == -1)
continue;
if (!(tg_cont->irq_info[irq_index].irq_map[i] & 0xFF))
continue;
addr = tgi->soc->port[port].reg_offset;
val = __raw_readl(tg_cont->tgi->gpio_regs + addr +
GPIO_INT_STATUS_OFFSET + GPIO_STATUS_G1);
for_each_set_bit(pin, &val, 8)
generic_handle_irq(tegra_gpio_to_irq(&tgi->gc,
port * 8 + pin));
}
done:
chained_irq_exit(chip, desc);
}
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/seq_file.h>
static int dbg_gpio_show(struct seq_file *s, void *unused)
{
struct tegra_gpio_info *tgi = s->private;
int i;
seq_puts(s, "Port:Pin:ENB DBC IN OUT_CTRL OUT_VAL INT_CLR\n");
for (i = 0; i < tgi->gc.ngpio; i++) {
if (!gpio_is_accessible(tgi, i))
continue;
seq_printf(s, "%s:%d 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
tgi->soc->port[GPIO_PORT(i)].port_name, i % 8,
tegra_gpio_readl(tgi, i, GPIO_ENB_CONFIG_REG),
tegra_gpio_readl(tgi, i, GPIO_DBC_THRES_REG),
tegra_gpio_readl(tgi, i, GPIO_INPUT_REG),
tegra_gpio_readl(tgi, i, GPIO_OUT_CTRL_REG),
tegra_gpio_readl(tgi, i, GPIO_OUT_VAL_REG),
tegra_gpio_readl(tgi, i, GPIO_INT_CLEAR_REG));
}
return 0;
}
static int dbg_gpio_open(struct inode *inode, struct file *file)
{
return single_open(file, dbg_gpio_show, inode->i_private);
}
static const struct file_operations debug_fops = {
.open = dbg_gpio_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int tegra_gpio_debuginit(struct tegra_gpio_info *tgi)
{
(void)debugfs_create_file(tgi->soc->debug_fs_name, S_IRUGO,
NULL, tgi, &debug_fops);
return 0;
}
#else
static inline int tegra_gpio_debuginit(struct tegra_gpio_info *tgi)
{
return 0;
}
#endif
static int tegra_gpio_get_num_ports(struct tegra_gpio_info *tgi, int bank)
{
int i;
int count = 0;
for (i = 0; i < tgi->soc->nports; i++) {
if (tgi->soc->port[i].cont_id == bank)
count++;
}
return count;
}
static void tegra_gpio_read_irq_routemap(struct tegra_gpio_info *tgi, int bank,
int irq_count)
{
struct tegra_gpio_controller *tgcont = &tgi->tg_contrlr[bank];
int irq_offset = irq_count + tgi->soc->start_irq_line;
int j;
int ret;
u32 pval;
/* Port G interrupt is not mapped to any line. */
if (bank == 0) {
ret = of_property_read_u32(tgi->dev->of_node,
"port-GG-interrupt-line", &pval);
if (!ret && (pval == irq_offset))
__raw_writel(0xF, tgi->scr_regs + (bank * 0x1000) + 0x800 +
(0 * GPIO_REG_DIFF) + ROUTE_MAP_OFFSET +
(irq_offset * 4));
}
for (j = 0; j < tgcont->num_ports; j++) {
tgcont->irq_info[irq_offset].irq_map[j] =
__raw_readl(tgi->scr_regs + (bank * 0x1000) + 0x800 +
(j * GPIO_REG_DIFF) + ROUTE_MAP_OFFSET +
(irq_offset * 4));
}
}
static int tegra_gpio_to_hw_irq(unsigned int sw_irq)
{
struct irq_data *d = irq_get_irq_data(sw_irq);
if (!d)
return -ENODEV;
return (int)irqd_to_hwirq(d) - 0x20;
}
static bool tegra_gpio_irq_is_protected(struct device *dev, u32 hw_irq)
{
struct device_node *np = dev->of_node;
int count;
int i;
int ret;
u32 pval;
count = of_property_count_elems_of_size(np, "nvidia,protected-gpio-irqs",
sizeof(u32));
if (count <= 0)
return false;
for (i = 0; i < count; ++i) {
ret = of_property_read_u32_index(np,
"nvidia,protected-gpio-irqs", i, &pval);
if (ret < 0)
return false;
if (pval == hw_irq)
return true;
}
return false;
}
static int tegra_gpio_probe(struct platform_device *pdev)
{
struct tegra_gpio_info *tgi;
struct tegra_gpio_controller *tgcont;
struct resource *res;
struct device_node *np;
u32 valid_map;
int irq_offset;
int hw_irq;
int bank;
int gpio;
int ret;
int i, j;
tgi = devm_kzalloc(&pdev->dev, sizeof(*tgi), GFP_KERNEL);
if (!tgi)
return -ENOMEM;
tgi->dev = &pdev->dev;
tgi->soc = of_device_get_match_data(&pdev->dev);
if (!tgi->soc->num_banks) {
for (bank = 0;; bank++) {
res = platform_get_resource(pdev, IORESOURCE_IRQ, bank);
if (!res)
break;
}
if (!bank) {
dev_err(&pdev->dev, "No GPIO Controller found\n");
return -ENODEV;
}
tgi->nbanks = bank;
} else {
tgi->nbanks = tgi->soc->num_banks;
}
tgi->state_suspend = devm_kzalloc(&pdev->dev, tgi->soc->nports * 8 *
sizeof(*tgi->state_suspend), GFP_KERNEL);
if (!tgi->state_suspend)
return -ENOMEM;
tgi->state_init = devm_kzalloc(&pdev->dev, tgi->soc->nports * 8 *
sizeof(*tgi->state_init), GFP_KERNEL);
if (!tgi->state_init)
return -ENOMEM;
tgi->gc.label = tgi->soc->name;
tgi->gc.request = tegra_gpio_request;
tgi->gc.free = tegra_gpio_free;
tgi->gc.direction_input = tegra_gpio_direction_input;
tgi->gc.get = tegra_gpio_get;
tgi->gc.direction_output = tegra_gpio_direction_output;
tgi->gc.set = tegra_gpio_set;
tgi->gc.get_direction = tegra_gpio_get_direction;
tgi->gc.suspend_configure = tegra_gpio_suspend_configure;
tgi->gc.is_enabled = tegra_gpio_is_enabled;
tgi->gc.to_irq = tegra_gpio_to_irq;
#if KERNEL_VERSION(4, 13, 0) < LINUX_VERSION_CODE
tgi->gc.set_config = tegra_gpio_set_config;
#else
tgi->gc.set_debounce = tegra_gpio_set_debounce;
#endif
tgi->gc.timestamp_control = tegra_gpio_timestamp_control;
tgi->gc.timestamp_read = tegra_gpio_timestamp_read;
tgi->gc.base = -1;
tgi->gc.ngpio = tgi->soc->nports * 8;
tgi->gc.parent = &pdev->dev;
tgi->gc.of_node = pdev->dev.of_node;
tgi->ic.name = tgi->soc->name;
tgi->ic.irq_ack = tegra_gpio_irq_ack;
tgi->ic.irq_mask = tegra_gpio_irq_mask;
tgi->ic.irq_unmask = tegra_gpio_irq_unmask;
tgi->ic.irq_bus_sync_unlock = tegra_gpio_irq_bus_sync_unlock;
tgi->ic.irq_set_type = tegra_gpio_irq_set_type;
tgi->ic.irq_shutdown = tegra_gpio_irq_mask;
tgi->ic.irq_set_wake = tegra_gpio_irq_set_wake;
tgi->ic.irq_disable = tegra_gpio_irq_mask;
platform_set_drvdata(pdev, tgi);
tgi->irq_domain = irq_domain_add_linear(pdev->dev.of_node,
tgi->gc.ngpio,
&irq_domain_simple_ops, NULL);
if (!tgi->irq_domain)
return -ENODEV;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "security");
if (!res) {
dev_err(&pdev->dev, "Missing security MEM resource\n");
return -ENODEV;
}
tgi->scr_regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(tgi->scr_regs)) {
ret = PTR_ERR(tgi->scr_regs);
dev_err(&pdev->dev, "Failed to iomap for security: %d\n", ret);
return ret;
}
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gpio");
if (!res) {
dev_err(&pdev->dev, "Missing gpio MEM resource\n");
return -ENODEV;
}
tgi->gpio_regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(tgi->gpio_regs)) {
ret = PTR_ERR(tgi->gpio_regs);
dev_err(&pdev->dev, "Failed to iomap for gpio: %d\n", ret);
return ret;
}
np = pdev->dev.of_node;
if (!np) {
dev_err(&pdev->dev, "No valid device node, probe failed\n");
return -EINVAL;
}
tgi->use_timestamp = of_property_read_bool(np, "use-timestamp");
if (tgi->use_timestamp) {
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gte");
if (!res) {
dev_err(&pdev->dev, "Missing gte MEM resource\n");
return -ENODEV;
}
tgi->gte_regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(tgi->gte_regs)) {
ret = PTR_ERR(tgi->gte_regs);
dev_err(&pdev->dev,
"Failed to iomap for gte: %d\n", ret);
return ret;
}
}
for (bank = 0; bank < tgi->nbanks; bank++) {
tgcont = &tgi->tg_contrlr[bank];
tgcont->num_ports = tegra_gpio_get_num_ports(tgi, bank);
for (i = 0; i < tgi->soc->num_irq_line; i++) {
res = platform_get_resource(pdev, IORESOURCE_IRQ, i +
(bank * tgi->soc->num_irq_line));
if (!res) {
dev_err(&pdev->dev, "Missing IRQ resource\n");
return -ENODEV;
}
irq_offset = i + tgi->soc->start_irq_line;
hw_irq = tegra_gpio_to_hw_irq(res->start);
if (hw_irq < 0) {
dev_err(&pdev->dev,
"Failed to get HW IRQ of SW IRQ(%llu) :%d\n",
res->start, hw_irq);
return hw_irq;
}
tgcont->irq[irq_offset] = res->start;
tgcont->irq_info[irq_offset].sw_irq = res->start;
tgcont->irq_info[irq_offset].hw_irq = hw_irq;
if (tegra_gpio_irq_is_protected(&pdev->dev, hw_irq)) {
tgcont->irq_info[irq_offset].valid = false;
continue;
}
/* read each port IRQ routemap */
if (tgi->soc->num_irq_line > 1) {
tegra_gpio_read_irq_routemap(tgi, bank, i);
} else {
for (j = 0; j < MAX_GPIO_PORTS; ++j)
tgcont->irq_info[i].irq_map[j] = 0xFF;
}
/* If no interrupt mapping then do not register IRQ */
valid_map = 0;
for (j = 0; j < tgcont->num_ports; ++j) {
valid_map |=
tgcont->irq_info[irq_offset].irq_map[j];
valid_map &= 0xFF;
}
if (!valid_map) {
tgcont->irq_info[irq_offset].valid = false;
continue;
}
tgcont->irq_info[irq_offset].valid = true;
}
tgcont->bank = bank;
tgcont->tgi = tgi;
}
ret = gpiochip_add_data(&tgi->gc, tgi);
if (ret < 0) {
dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
return ret;
}
for (gpio = 0; gpio < tgi->gc.ngpio; gpio++) {
int cont_id = tgi->soc->port[GPIO_PORT(gpio)].cont_id;
int irq;
if (cont_id < 0)
continue;
irq = irq_create_mapping(tgi->irq_domain, gpio);
if (gpio_is_accessible(tgi, gpio))
/* mask interrupts for this GPIO */
tegra_gpio_update(tgi, gpio, GPIO_ENB_CONFIG_REG,
GPIO_INT_FUNC_BIT, 0);
irq_set_lockdep_class(irq, &gpio_lock_class);
irq_set_chip_data(irq, &tgi->tg_contrlr[cont_id]);
irq_set_chip_and_handler(irq, &tgi->ic, handle_simple_irq);
}
for (bank = 0; bank < tgi->nbanks; bank++) {
tgcont = &tgi->tg_contrlr[bank];
for (i = 0; i < tgi->soc->num_irq_line; i++) {
irq_offset = i + tgi->soc->start_irq_line;
if (!tgcont->irq_info[irq_offset].valid)
continue;
irq_set_chained_handler_and_data(
tgcont->irq_info[irq_offset].sw_irq,
tegra_gpio_irq_handler_desc,
tgcont);
}
}
tegra_pm_update_gpio_wakeup_table(tgi->gc.base,
(int *)tgi->soc->wake_table,
tgi->soc->nwakes);
if (tgi->use_timestamp)
tegra_gte_setup(tgi);
tegra_gpio_debuginit(tgi);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int tegra_gpio_resume_early(struct device *dev)
{
struct tegra_gpio_info *tgi = dev_get_drvdata(dev);
struct tegra_gpio_state *regs;
int i;
for (i = 0; i < tgi->gc.ngpio; i++) {
regs = &tgi->state_suspend[i];
if (!regs->restore_needed)
continue;
regs->restore_needed = false;
tegra_gpio_writel(tgi, regs->val, i, GPIO_OUT_VAL_REG);
tegra_gpio_writel(tgi, regs->out, i, GPIO_OUT_CTRL_REG);
tegra_gpio_writel(tgi, regs->conf, i, GPIO_ENB_CONFIG_REG);
pinctrl_gpio_restore_config(tgi->gc.base + i);
}
return 0;
}
static int tegra_gpio_suspend_late(struct device *dev)
{
struct tegra_gpio_info *tgi = dev_get_drvdata(dev);
return of_gpiochip_suspend(&tgi->gc);
}
static const struct dev_pm_ops tegra_gpio_pm = {
.suspend_late = tegra_gpio_suspend_late,
.resume_early = tegra_gpio_resume_early,
};
#define TEGRA_GPIO_PM &tegra_gpio_pm
#else
#define TEGRA_GPIO_PM NULL
#endif
static const struct tegra_gpio_soc_info t186_gpio_soc = {
.name = "tegra-gpio",
.debug_fs_name = "tegra_gpio",
.port = tegra186_gpio_cinfo,
.nports = ARRAY_SIZE(tegra186_gpio_cinfo),
.wake_table = tegra186_gpio_wakes,
.nwakes = ARRAY_SIZE(tegra186_gpio_wakes),
.num_irq_line = 1,
.num_banks = 0,
.start_irq_line = 0,
.do_vm_check = false,
};
static const struct tegra_gpio_soc_info t186_aon_gpio_soc = {
.name = "tegra-gpio-aon",
.debug_fs_name = "tegra-gpio-aon",
.port = tegra186_aon_gpio_cinfo,
.nports = ARRAY_SIZE(tegra186_aon_gpio_cinfo),
.wake_table = tegra186_aon_gpio_wakes,
.nwakes = ARRAY_SIZE(tegra186_aon_gpio_wakes),
.num_irq_line = 1,
.num_banks = 0,
.start_irq_line = 0,
.do_vm_check = false,
};
static const struct tegra_gpio_soc_info t194_gpio_soc = {
.name = "tegra-gpio",
.debug_fs_name = "tegra_gpio",
.port = tegra194_gpio_cinfo,
.nports = ARRAY_SIZE(tegra194_gpio_cinfo),
.wake_table = tegra194_gpio_wakes,
.nwakes = ARRAY_SIZE(tegra194_gpio_wakes),
.num_irq_line = 8,
.num_banks = 6,
.start_irq_line = 0,
.do_vm_check = true,
};
static const struct tegra_gpio_soc_info t194_aon_gpio_soc = {
.name = "tegra-gpio-aon",
.debug_fs_name = "tegra-gpio-aon",
.port = tegra194_aon_gpio_cinfo,
.nports = ARRAY_SIZE(tegra194_aon_gpio_cinfo),
.wake_table = tegra194_aon_gpio_wakes,
.nwakes = ARRAY_SIZE(tegra194_aon_gpio_wakes),
.gte_info = tegra194_gte_info,
.gte_npins = ARRAY_SIZE(tegra194_gte_info),
.num_irq_line = 4,
.num_banks = 1,
.start_irq_line = 4,
.do_vm_check = false,
};
static struct of_device_id tegra_gpio_of_match[] = {
{ .compatible = "nvidia,tegra186-gpio", .data = &t186_gpio_soc},
{ .compatible = "nvidia,tegra186-gpio-aon", .data = &t186_aon_gpio_soc},
{ .compatible = "nvidia,tegra194-gpio", .data = &t194_gpio_soc},
{ .compatible = "nvidia,tegra194-gpio-aon", .data = &t194_aon_gpio_soc},
{ },
};
static struct platform_driver tegra_gpio_driver = {
.driver = {
.name = "gpio-tegra186",
.of_match_table = tegra_gpio_of_match,
.pm = TEGRA_GPIO_PM,
},
.probe = tegra_gpio_probe,
};
static int __init tegra_gpio_init(void)
{
return platform_driver_register(&tegra_gpio_driver);
}
postcore_initcall(tegra_gpio_init);
MODULE_AUTHOR("Suresh Mangipudi <smangipudi@nvidia.com>");
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
MODULE_DESCRIPTION("NVIDIA Tegra186 GPIO driver");
MODULE_LICENSE("GPL v2");
Reference in New Issue View Git Blame Copy Permalink