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/*
* Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/io.h>
#include <mach/iomap.h>
#include <mach/irqs.h>
#include <mach/gpio-tegra.h>
#include "board.h"
#include "tegra-board-id.h"
#include "gpio-names.h"
#include "pm-irq.h"
/* Tegra USB1 wake source index */
#define USB1_VBUS_WAKE 19
#define USB1_ID_WAKE 21
#define USB1_REM_WAKE 39
/* constants for USB1 wake sources - VBUS and ID */
#define USB1_IF_USB_PHY_VBUS_SENSORS_0 0x408
#define VBUS_WAKEUP_STS_BIT 10
#define ID_STS_BIT 2
static int tegra_gpio_wakes[] = {
TEGRA_GPIO_PO5, /* wake0 */
TEGRA_GPIO_PV1, /* wake1 */
-EINVAL, /* wake2 */
-EINVAL, /* wake3 */
-EINVAL, /* wake4 */
-EINVAL, /* wake5 */
TEGRA_GPIO_PU5, /* wake6 */
TEGRA_GPIO_PU6, /* wake7 */
TEGRA_GPIO_PC7, /* wake8 */
TEGRA_GPIO_PS2, /* wake9 */
-EINVAL, /* wake10 */
TEGRA_GPIO_PW3, /* wake11 */
TEGRA_GPIO_PW2, /* wake12 */
-EINVAL, /* wake13 */
TEGRA_GPIO_PDD3, /* wake14 */
TEGRA_GPIO_PJ2, /* wake15 */
-EINVAL, /* wake16 */
-EINVAL, /* wake17 */
-EINVAL, /* wake18 */
-EINVAL, /* wake19 */
-EINVAL, /* wake20 */
-EINVAL, /* wake21 */
-EINVAL, /* wake22 */
TEGRA_GPIO_PI5, /* wake23 */
TEGRA_GPIO_PV0, /* wake24 */
-EINVAL, /* wake25 */
-EINVAL, /* wake26 */
TEGRA_GPIO_PS0, /* wake27 */
-EINVAL, /* wake28 */
-EINVAL, /* wake29 */
-EINVAL, /* wake30 */
-EINVAL, /* wake31 */
-EINVAL, /* wake32 */
TEGRA_GPIO_PJ0, /* wake33 */
TEGRA_GPIO_PK2, /* wake34 */
TEGRA_GPIO_PI6, /* wake35 */
-EINVAL, /* wake36 */
-EINVAL, /* wake37 */
-EINVAL, /* wake38 */
-EINVAL, /* wake39 */
-EINVAL, /* wake40 */
-EINVAL, /* wake41 */
-EINVAL, /* wake42 */
-EINVAL, /* wake43 */
-EINVAL, /* wake44 */
TEGRA_GPIO_PBB6, /* wake45 */
-EINVAL, /* wake46 */
TEGRA_GPIO_PT6, /* wake47 */
-EINVAL, /* wake48 */
TEGRA_GPIO_PR7, /* wake49 */
TEGRA_GPIO_PR4, /* wake50 */
TEGRA_GPIO_PQ0, /* wake51 */
TEGRA_GPIO_PEE3, /* wake52 */
-EINVAL, /* wake53 */
TEGRA_GPIO_PQ5, /* wake54 */
-EINVAL, /* wake55 */
TEGRA_GPIO_PV2, /* wake56 */
-EINVAL, /* wake57 */
-EINVAL, /* wake58 */
};
static int tegra_wake_event_irq[] = {
-EAGAIN, /* ULPI DATA4 */ /* wake0 */
-EAGAIN, /* wake1 */
-EAGAIN, /* wake2 */
INT_SDMMC3, /* SDMMC3 DAT1 */ /* wake3 */
INT_HDMI, /* HDMI INT */ /* wake4 */
-EAGAIN, /* wake5 */
-EAGAIN, /* wake6 */
-EAGAIN, /* wake7 */
-EAGAIN, /* wake8 */
INT_UARTC, /* UART3 RXD */ /* wake9 */
INT_SDMMC4, /* SDMMC4 DAT1 */ /* wake10 */
-EAGAIN, /* wake11 */
-EAGAIN, /* wake12 */
INT_SDMMC1, /* SDMMC1 DAT1 */ /* wake13 */
-EAGAIN, /* wake14 */
INT_EDP, /* wake15 */
INT_RTC, /* wake16 */
INT_KBC, /* wake17 */
INT_EXTERNAL_PMU, /* wake18 */
-EINVAL, /* wake19 */
-EINVAL, /* wake20 */
-EINVAL, /* wake21 */
-EINVAL, /* wake22 */
-EAGAIN, /* wake23 */
-EAGAIN, /* wake24 */
-EAGAIN, /* wake25 */
-EAGAIN, /* wake26 */
-EAGAIN, /* wake27 */
-EAGAIN, /* wake28 */
-EAGAIN, /* wake29 */
INT_AUDIO_CLUSTER, /* I2S0 SDATA OUT */ /* wake30 */
-EINVAL, /* wake31 */
-EINVAL, /* ULPI DATA3 */ /* wake32 */
-EAGAIN, /* wake33 */
-EAGAIN, /* wake34 */
-EAGAIN, /* wake35 */
-EAGAIN, /* wake36 */
-EINVAL, /* TEGRA_USB3_VBUS, */ /* wake37 */
-EINVAL, /* TEGRA_USB3_ID, */ /* wake38 */
INT_USB, /* TEGRA_USB1_UTMIP, */ /* wake39 */
-EINVAL, /* wake40 */
-EINVAL, /* wake41 */
INT_USB2, /* USB1 UHSIC PHY */ /* wake42 */
INT_USB3, /* USB3 UHSIC PHY */ /* wake43 */
INT_I2C, /* I2C1 DAT */ /* wake44 */
-EAGAIN, /* wake45 */
INT_I2C5, /* PWR I2C DAT */ /* wake46 */
INT_I2C2, /* I2C2 DAT */ /* wake47 */
INT_I2C3, /* I2C3 DAT */ /* wake48 */
-EAGAIN, /* wake49 */
-EAGAIN, /* wake50 */
INT_KBC, /* KBC11 */ /* wake51 */
INT_HDMI, /* HDMI CEC */ /* wake52 */
INT_I2C3, /* I2C3 CLK */ /* wake53 */
-EAGAIN, /* wake54 */
INT_UARTC, /* UART3 CTS */ /* wake55 */
-EAGAIN, /* SDMMC3 CD */ /* wake56 */
INT_USB, /* TEGRA_USB1_VBUS_EN1, */ /* wake57 */
INT_XUSB_PADCTL, /* XUSB superspeed wake */ /* wake58 */
};
static int last_gpio = -1;
/* USB1 VBUS and ID wake sources are handled as special case
* Note: SD card detect is an ANY wake source but is
* mostly a GPIO which can handle any edge wakeup.
*/
static u8 any_wake_t11x[] = {
/* DO NOT EDIT this list */
[ANY_WAKE_INDEX_VBUS] = USB1_VBUS_WAKE,
[ANY_WAKE_INDEX_ID] = USB1_ID_WAKE,
};
void tegra_get_internal_any_wake_list(u8 *wake_count, u8 **any_wake,
u8 *remote_usb)
{
*wake_count = ARRAY_SIZE(any_wake_t11x);
*any_wake = any_wake_t11x;
*remote_usb = USB1_REM_WAKE;
}
/* Needed on dalmore today hence exposed this API */
int get_vbus_id_cable_connect_state(bool *is_vbus_connected,
bool *is_id_connected)
{
static void __iomem *usb1_base = IO_ADDRESS(TEGRA_USB_BASE);
u32 reg;
reg = readl(usb1_base + USB1_IF_USB_PHY_VBUS_SENSORS_0);
/* ID bit when 0 - ID cable connected */
*is_id_connected = (reg & (1 << ID_STS_BIT)) ? false : true;
/*
* VBUS_WAKEUP_STS_BIT is also set when ID is connected
* and we are supplying VBUS, hence below conditional assignment
*/
if (*is_id_connected)
*is_vbus_connected = false;
else
/* VBUS bit when 1 - VBUS cable connected */
*is_vbus_connected = (reg & (1 << VBUS_WAKEUP_STS_BIT)) ?
true : false;
return 0;
}
int tegra_gpio_to_wake(int gpio)
{
int i;
for (i = 0; i < ARRAY_SIZE(tegra_gpio_wakes); i++) {
if (tegra_gpio_wakes[i] == gpio) {
pr_info("gpio wake%d for gpio=%d\n", i, gpio);
last_gpio = i;
return i;
}
}
return -EINVAL;
}
void tegra_set_usb_wake_source(void)
{
struct board_info board_info;
tegra_get_board_info(&board_info);
/* For Dalmore */
if (board_info.board_id == BOARD_E1611) {
tegra_wake_event_irq[41] = INT_USB3;
tegra_wake_event_irq[43] = -EINVAL;
}
}
int tegra_irq_to_wake(int irq)
{
int i;
int ret = -EINVAL;
for (i = 0; i < ARRAY_SIZE(tegra_wake_event_irq); i++) {
if (tegra_wake_event_irq[i] == irq) {
pr_info("Wake%d for irq=%d\n", i, irq);
ret = i;
goto out;
}
}
/* The gpio set_wake code bubbles the set_wake call up to the irq
* set_wake code. This insures that the nested irq set_wake call
* succeeds, even though it doesn't have to do any pm setup for the
* bank.
*
* This is very fragile - there's no locking, so two callers could
* cause issues with this.
*/
if (last_gpio < 0)
goto out;
if (tegra_gpio_get_bank_int_nr(tegra_gpio_wakes[last_gpio]) == irq) {
pr_info("gpio bank wake found: wake%d for irq=%d\n", i, irq);
ret = last_gpio;
}
out:
return ret;
}
int tegra_wake_to_irq(int wake)
{
int ret;
if (wake < 0)
return -EINVAL;
if (wake >= ARRAY_SIZE(tegra_wake_event_irq))
return -EINVAL;
ret = tegra_wake_event_irq[wake];
if (ret == -EAGAIN) {
ret = tegra_gpio_wakes[wake];
if (ret != -EINVAL)
ret = gpio_to_irq(ret);
}
return ret;
}
int tegra_disable_wake_source(int wake)
{
if (wake >= ARRAY_SIZE(tegra_wake_event_irq))
return -EINVAL;
tegra_wake_event_irq[wake] = -EINVAL;
return 0;
}
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