diff options
Diffstat (limited to 'chip/npcx/gpio-npcx7.c')
| -rw-r--r--[l---------] | chip/npcx/gpio-npcx7.c | 201 |
1 files changed, 200 insertions, 1 deletions
diff --git a/chip/npcx/gpio-npcx7.c b/chip/npcx/gpio-npcx7.c index 39b939f44c..2201bb65c2 120000..100644 --- a/chip/npcx/gpio-npcx7.c +++ b/chip/npcx/gpio-npcx7.c @@ -1 +1,200 @@ -gpio-npcx5.c
\ No newline at end of file +/* Copyright 2020 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* GPIO module for Chrome EC */ + +#include "clock.h" +#include "common.h" +#include "ec_commands.h" +#include "gpio_chip.h" +#include "hooks.h" +#include "host_command.h" +#include "lpc_chip.h" +#include "registers.h" +#include "task.h" + +/* + * List of GPIO IRQs to enable. Don't automatically enable interrupts for + * the keyboard input GPIO bank - that's handled separately. Of course the + * bank is different for different systems. + */ +static void gpio_init(void) +{ + /* Enable IRQs now that pins are set up */ + task_enable_irq(NPCX_IRQ_MTC_WKINTAD_0); + task_enable_irq(NPCX_IRQ_WKINTEFGH_0); + task_enable_irq(NPCX_IRQ_WKINTC_0); + task_enable_irq(NPCX_IRQ_TWD_WKINTB_0); + task_enable_irq(NPCX_IRQ_WKINTA_1); + task_enable_irq(NPCX_IRQ_WKINTB_1); +#ifdef NPCX_SELECT_KSI_TO_GPIO + task_enable_irq(NPCX_IRQ_KSI_WKINTC_1); +#endif + task_enable_irq(NPCX_IRQ_WKINTD_1); + task_enable_irq(NPCX_IRQ_WKINTE_1); + task_enable_irq(NPCX_IRQ_WKINTF_1); + task_enable_irq(NPCX_IRQ_WKINTG_1); + task_enable_irq(NPCX_IRQ_WKINTH_1); +#if defined(CHIP_FAMILY_NPCX7) + task_enable_irq(NPCX_IRQ_WKINTFG_2); +#endif +} +DECLARE_HOOK(HOOK_INIT, gpio_init, HOOK_PRIO_DEFAULT); + +/** + * Handlers for each GPIO port. These read and clear the interrupt bits for + * the port, then call the master handler above. + */ + +#define GPIO_IRQ_FUNC(_irq_func, wui_int) \ + static void _irq_func(void) \ + { \ + gpio_interrupt(wui_int); \ + } + +/* If we need to handle the other type interrupts except GPIO, add code here */ +static void __gpio_wk0efgh_interrupt(void) +{ + if (IS_ENABLED(CONFIG_HOSTCMD_X86)) { + /* Pending bit 7 or 6 or 5? */ + if (IS_BIT_SET(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_5), 6) && + IS_BIT_SET(NPCX_WKPND(MIWU_TABLE_0, MIWU_GROUP_5), 6)) { + /* Disable host wake-up */ + CLEAR_BIT(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_5), 6); + /* Clear pending bit of WUI */ + SET_BIT(NPCX_WKPCL(MIWU_TABLE_0, MIWU_GROUP_5), 6); + return; + } + if (IS_ENABLED(CONFIG_HOST_INTERFACE_ESPI)) { + if (IS_BIT_SET(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_5), + 5) && + IS_BIT_SET(NPCX_WKPND(MIWU_TABLE_0, MIWU_GROUP_5), + 5)) { + espi_espirst_handler(); + return; + } + } else { + if (IS_BIT_SET(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_5), + 7) && + IS_BIT_SET(NPCX_WKPND(MIWU_TABLE_0, MIWU_GROUP_5), + 7)) { + lpc_lreset_pltrst_handler(); + return; + } + } + } + gpio_interrupt(WUI_INT(MIWU_TABLE_0, MIWU_GROUP_5)); + gpio_interrupt(WUI_INT(MIWU_TABLE_0, MIWU_GROUP_6)); + gpio_interrupt(WUI_INT(MIWU_TABLE_0, MIWU_GROUP_7)); + gpio_interrupt(WUI_INT(MIWU_TABLE_0, MIWU_GROUP_8)); +} + +#ifdef CONFIG_HOSTCMD_RTC +static void set_rtc_host_event(void) +{ + host_set_single_event(EC_HOST_EVENT_RTC); +} +DECLARE_DEFERRED(set_rtc_host_event); +#endif + +static void __gpio_rtc_interrupt(void) +{ + /* Check pending bit 7 */ +#ifdef CONFIG_HOSTCMD_RTC + if (NPCX_WKPND(MIWU_TABLE_0, MIWU_GROUP_4) & 0x80) { + /* Clear pending bit for WUI */ + SET_BIT(NPCX_WKPCL(MIWU_TABLE_0, MIWU_GROUP_4), 7); + hook_call_deferred(&set_rtc_host_event_data, 0); + return; + } +#endif +#if defined(CHIP_FAMILY_NPCX7) && defined(CONFIG_LOW_POWER_IDLE) && \ + (CONFIG_CONSOLE_UART == 1) + /* Handle the interrupt from UART wakeup event */ + if (IS_BIT_SET(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_1), 6) && + IS_BIT_SET(NPCX_WKPND(MIWU_TABLE_0, MIWU_GROUP_1), 6)) { + /* + * Disable WKEN bit to avoid the other unnecessary interrupts + * from the coming data bits after the start bit. (Pending bit + * of CR_SIN is set when a high-to-low transaction occurs.) + */ + CLEAR_BIT(NPCX_WKEN(MIWU_TABLE_0, MIWU_GROUP_1), 6); + /* Clear pending bit for WUI */ + SET_BIT(NPCX_WKPCL(MIWU_TABLE_0, MIWU_GROUP_1), 6); + /* Notify the clock module that the console is in use. */ + clock_refresh_console_in_use(); + return; + } +#endif + gpio_interrupt(WUI_INT(MIWU_TABLE_0, MIWU_GROUP_1)); + gpio_interrupt(WUI_INT(MIWU_TABLE_0, MIWU_GROUP_4)); +} + +static void __gpio_wk1h_interrupt(void) +{ +#if defined(CHIP_FAMILY_NPCX7) && defined(CONFIG_LOW_POWER_IDLE) && \ + (CONFIG_CONSOLE_UART == 0) + /* Handle the interrupt from UART wakeup event */ + if (IS_BIT_SET(NPCX_WKEN(MIWU_TABLE_1, MIWU_GROUP_8), 7) && + IS_BIT_SET(NPCX_WKPND(MIWU_TABLE_1, MIWU_GROUP_8), 7)) { + /* + * Disable WKEN bit to avoid the other unnecessary interrupts + * from the coming data bits after the start bit. (Pending bit + * of CR_SIN is set when a high-to-low transaction occurs.) + */ + CLEAR_BIT(NPCX_WKEN(MIWU_TABLE_1, MIWU_GROUP_8), 7); + /* Clear pending bit for WUI */ + SET_BIT(NPCX_WKPCL(MIWU_TABLE_1, MIWU_GROUP_8), 7); + /* Notify the clock module that the console is in use. */ + clock_refresh_console_in_use(); + } else +#endif + gpio_interrupt(WUI_INT(MIWU_TABLE_1, MIWU_GROUP_8)); +} + +GPIO_IRQ_FUNC(__gpio_wk0b_interrupt, WUI_INT(MIWU_TABLE_0, MIWU_GROUP_2)); +GPIO_IRQ_FUNC(__gpio_wk0c_interrupt, WUI_INT(MIWU_TABLE_0, MIWU_GROUP_3)); +GPIO_IRQ_FUNC(__gpio_wk1a_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_1)); +GPIO_IRQ_FUNC(__gpio_wk1b_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_2)); +#ifdef NPCX_SELECT_KSI_TO_GPIO +/* Declare GPIO irq functions for KSI pins if there's no keyboard scan task, */ +GPIO_IRQ_FUNC(__gpio_wk1c_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_3)); +#endif +GPIO_IRQ_FUNC(__gpio_wk1d_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_4)); +GPIO_IRQ_FUNC(__gpio_wk1e_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_5)); +GPIO_IRQ_FUNC(__gpio_wk1f_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_6)); +GPIO_IRQ_FUNC(__gpio_wk1g_interrupt, WUI_INT(MIWU_TABLE_1, MIWU_GROUP_7)); +#if defined(CHIP_FAMILY_NPCX7) +GPIO_IRQ_FUNC(__gpio_wk2fg_interrupt, WUI_INT(MIWU_TABLE_2, MIWU_GROUP_6)); +#endif + +DECLARE_IRQ(NPCX_IRQ_MTC_WKINTAD_0, __gpio_rtc_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_TWD_WKINTB_0, __gpio_wk0b_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_WKINTC_0, __gpio_wk0c_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_WKINTEFGH_0, __gpio_wk0efgh_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_WKINTA_1, __gpio_wk1a_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_WKINTB_1, __gpio_wk1b_interrupt, 3); +#ifdef NPCX_SELECT_KSI_TO_GPIO +DECLARE_IRQ(NPCX_IRQ_KSI_WKINTC_1, __gpio_wk1c_interrupt, 3); +#endif +DECLARE_IRQ(NPCX_IRQ_WKINTD_1, __gpio_wk1d_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_WKINTE_1, __gpio_wk1e_interrupt, 3); +#ifdef CONFIG_HOST_INTERFACE_SHI +/* + * HACK: Make CS GPIO P2 to improve SHI reliability. + * TODO: Increase CS-assertion-to-transaction-start delay on host to + * accommodate P3 CS interrupt. + */ +DECLARE_IRQ(NPCX_IRQ_WKINTF_1, __gpio_wk1f_interrupt, 2); +#else +DECLARE_IRQ(NPCX_IRQ_WKINTF_1, __gpio_wk1f_interrupt, 3); +#endif +DECLARE_IRQ(NPCX_IRQ_WKINTG_1, __gpio_wk1g_interrupt, 3); +DECLARE_IRQ(NPCX_IRQ_WKINTH_1, __gpio_wk1h_interrupt, 3); +#if defined(CHIP_FAMILY_NPCX7) +DECLARE_IRQ(NPCX_IRQ_WKINTFG_2, __gpio_wk2fg_interrupt, 3); +#endif + +#undef GPIO_IRQ_FUNC |