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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /chip/it83xx/ec2i.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-252457d4b21f46889eebad61d4c0a65331919cec.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'chip/it83xx/ec2i.c')
-rw-r--r--chip/it83xx/ec2i.c312
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diff --git a/chip/it83xx/ec2i.c b/chip/it83xx/ec2i.c
deleted file mode 100644
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--- a/chip/it83xx/ec2i.c
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@@ -1,312 +0,0 @@
-/* Copyright 2014 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* EC2I control module for IT83xx. */
-
-#include "common.h"
-#include "console.h"
-#include "ec2i_chip.h"
-#include "hooks.h"
-#include "registers.h"
-#include "task.h"
-#include "timer.h"
-#include "util.h"
-
-static const struct ec2i_t keyboard_settings[] = {
- /* Select logical device 06h(keyboard) */
- {HOST_INDEX_LDN, LDN_KBC_KEYBOARD},
- /* Set IRQ=01h for logical device */
- {HOST_INDEX_IRQNUMX, 0x01},
- /* Configure IRQTP for KBC. */
-#ifdef CONFIG_HOSTCMD_ESPI
- /*
- * Interrupt request type select (IRQTP) for KBC.
- * bit 1, 0: IRQ request is buffered and applied to SERIRQ
- * 1: IRQ request is inverted before being applied to SERIRQ
- * bit 0, 0: Edge triggered mode
- * 1: Level triggered mode
- *
- * SERIRQ# is by default deasserted level high. However, when using
- * eSPI, SERIRQ# is routed over virtual wire as interrupt event. As
- * per eSPI base spec (doc#327432), all virtual wire interrupt events
- * are deasserted level low. Thus, it is necessary to configure this
- * interrupt as inverted. ITE hardware takes care of routing the SERIRQ#
- * signal appropriately over eSPI / LPC depending upon the selected
- * mode.
- *
- * Additionally, this interrupt is configured as edge-triggered on the
- * host side. So, match the trigger mode on the EC side as well.
- */
- {HOST_INDEX_IRQTP, 0x02},
-#endif
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-
-#ifdef CONFIG_IT83XX_ENABLE_MOUSE_DEVICE
-static const struct ec2i_t mouse_settings[] = {
- /* Select logical device 05h(mouse) */
- {HOST_INDEX_LDN, LDN_KBC_MOUSE},
- /* Set IRQ=0Ch for logical device */
- {HOST_INDEX_IRQNUMX, 0x0C},
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-#endif
-
-static const struct ec2i_t pm1_settings[] = {
- /* Select logical device 11h(PM1 ACPI) */
- {HOST_INDEX_LDN, LDN_PMC1},
- /* Set IRQ=00h for logical device */
- {HOST_INDEX_IRQNUMX, 0x00},
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-
-static const struct ec2i_t pm2_settings[] = {
- /* Select logical device 12h(PM2) */
- {HOST_INDEX_LDN, LDN_PMC2},
- /* I/O Port Base Address 200h/204h */
- {HOST_INDEX_IOBAD0_MSB, 0x02},
- {HOST_INDEX_IOBAD0_LSB, 0x00},
- {HOST_INDEX_IOBAD1_MSB, 0x02},
- {HOST_INDEX_IOBAD1_LSB, 0x04},
- /* Set IRQ=00h for logical device */
- {HOST_INDEX_IRQNUMX, 0x00},
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-
-static const struct ec2i_t smfi_settings[] = {
- /* Select logical device 0Fh(SMFI) */
- {HOST_INDEX_LDN, LDN_SMFI},
- /* H2RAM LPC I/O cycle Dxxx */
- {HOST_INDEX_DSLDC6, 0x00},
- /* Enable H2RAM LPC I/O cycle */
- {HOST_INDEX_DSLDC7, 0x01},
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-
-/*
- * PM3 is enabled and base address is set to 80h so that we are able to get an
- * interrupt when host outputs data to port 80.
- */
-static const struct ec2i_t pm3_settings[] = {
- /* Select logical device 17h(PM3) */
- {HOST_INDEX_LDN, LDN_PMC3},
- /* I/O Port Base Address 80h */
- {HOST_INDEX_IOBAD0_MSB, 0x00},
- {HOST_INDEX_IOBAD0_LSB, 0x80},
- {HOST_INDEX_IOBAD1_MSB, 0x00},
- {HOST_INDEX_IOBAD1_LSB, 0x00},
- /* Set IRQ=00h for logical device */
- {HOST_INDEX_IRQNUMX, 0x00},
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-
-/*
- * This logical device is not enabled, however P80L* settings need to be
- * performed on this logical device to ensure that port80 BRAM index is
- * initialized correctly.
- */
-static const struct ec2i_t rtct_settings[] = {
- /* Select logical device 10h(RTCT) */
- {HOST_INDEX_LDN, LDN_RTCT},
- /* P80L Begin Index */
- {HOST_INDEX_DSLDC4, P80L_P80LB},
- /* P80L End Index */
- {HOST_INDEX_DSLDC5, P80L_P80LE},
- /* P80L Current Index */
- {HOST_INDEX_DSLDC6, P80L_P80LC},
-};
-
-#ifdef CONFIG_UART_HOST
-static const struct ec2i_t uart2_settings[] = {
- /* Select logical device 2h(UART2) */
- {HOST_INDEX_LDN, LDN_UART2},
- /*
- * I/O port base address is 2F8h.
- * Host can use LPC I/O port 0x2F8 ~ 0x2FF to access UART2.
- * See specification 7.24.4 for more detial.
- */
- {HOST_INDEX_IOBAD0_MSB, 0x02},
- {HOST_INDEX_IOBAD0_LSB, 0xF8},
- /* IRQ number is 3 */
- {HOST_INDEX_IRQNUMX, 0x03},
- /*
- * Interrupt Request Type Select
- * bit1, 0: IRQ request is buffered and applied to SERIRQ.
- * 1: IRQ request is inverted before being applied to SERIRQ.
- * bit0, 0: Edge triggered mode.
- * 1: Level triggered mode.
- */
- {HOST_INDEX_IRQTP, 0x02},
- /* Enable logical device */
- {HOST_INDEX_LDA, 0x01},
-};
-#endif
-
-/* EC2I access index/data port */
-enum ec2i_access {
- /* index port */
- EC2I_ACCESS_INDEX = 0,
- /* data port */
- EC2I_ACCESS_DATA = 1,
-};
-
-enum ec2i_status_mask {
- /* 1: EC read-access is still processing. */
- EC2I_STATUS_CRIB = BIT(1),
- /* 1: EC write-access is still processing with IHD register. */
- EC2I_STATUS_CWIB = BIT(2),
- EC2I_STATUS_ALL = (EC2I_STATUS_CRIB | EC2I_STATUS_CWIB),
-};
-
-static int ec2i_wait_status_bit_cleared(enum ec2i_status_mask mask)
-{
- /* delay ~15.25us */
- IT83XX_GCTRL_WNCKR = 0;
-
- return (IT83XX_EC2I_IBCTL & mask);
-}
-
-static enum ec2i_message ec2i_write_pnpcfg(enum ec2i_access sel, uint8_t data)
-{
- int rv = EC_ERROR_UNKNOWN;
-
- /* bit1 : VCC power on */
- if (IT83XX_SWUC_SWCTL1 & BIT(1)) {
- /*
- * Wait that both CRIB and CWIB bits in IBCTL register
- * are cleared.
- */
- rv = ec2i_wait_status_bit_cleared(EC2I_STATUS_ALL);
- if (!rv) {
- /* Set indirect host I/O offset. */
- IT83XX_EC2I_IHIOA = sel;
- /* Write the data to IHD register */
- IT83XX_EC2I_IHD = data;
- /* Enable EC access to the PNPCFG registers */
- IT83XX_EC2I_IBMAE |= BIT(0);
- /* bit0: EC to I-Bus access enabled. */
- IT83XX_EC2I_IBCTL |= BIT(0);
- /* Wait the CWIB bit in IBCTL cleared. */
- rv = ec2i_wait_status_bit_cleared(EC2I_STATUS_CWIB);
- /* Disable EC access to the PNPCFG registers. */
- IT83XX_EC2I_IBMAE &= ~BIT(0);
- /* Disable EC to I-Bus access. */
- IT83XX_EC2I_IBCTL &= ~BIT(0);
- }
- }
-
- return rv ? EC2I_WRITE_ERROR : EC2I_WRITE_SUCCESS;
-}
-
-static enum ec2i_message ec2i_read_pnpcfg(enum ec2i_access sel)
-{
- int rv = EC_ERROR_UNKNOWN;
- uint8_t ihd = 0;
-
- /* bit1 : VCC power on */
- if (IT83XX_SWUC_SWCTL1 & BIT(1)) {
- /*
- * Wait that both CRIB and CWIB bits in IBCTL register
- * are cleared.
- */
- rv = ec2i_wait_status_bit_cleared(EC2I_STATUS_ALL);
- if (!rv) {
- /* Set indirect host I/O offset. */
- IT83XX_EC2I_IHIOA = sel;
- /* Enable EC access to the PNPCFG registers */
- IT83XX_EC2I_IBMAE |= BIT(0);
- /* bit1: a read-action */
- IT83XX_EC2I_IBCTL |= BIT(1);
- /* bit0: EC to I-Bus access enabled. */
- IT83XX_EC2I_IBCTL |= BIT(0);
- /* Wait the CRIB bit in IBCTL cleared. */
- rv = ec2i_wait_status_bit_cleared(EC2I_STATUS_CRIB);
- /* Read the data from IHD register */
- ihd = IT83XX_EC2I_IHD;
- /* Disable EC access to the PNPCFG registers. */
- IT83XX_EC2I_IBMAE &= ~BIT(0);
- /* Disable EC to I-Bus access. */
- IT83XX_EC2I_IBCTL &= ~BIT(0);
- }
- }
-
- return rv ? EC2I_READ_ERROR : (EC2I_READ_SUCCESS + ihd);
-}
-
-/* EC2I read */
-enum ec2i_message ec2i_read(enum host_pnpcfg_index index)
-{
- enum ec2i_message ret = EC2I_READ_ERROR;
- /* critical section with interrupts off */
- uint32_t int_mask = read_clear_int_mask();
-
- /* Set index */
- if (ec2i_write_pnpcfg(EC2I_ACCESS_INDEX, index) == EC2I_WRITE_SUCCESS)
- /* read data port */
- ret = ec2i_read_pnpcfg(EC2I_ACCESS_DATA);
- /* restore interrupts */
- set_int_mask(int_mask);
-
- return ret;
-}
-
-/* EC2I write */
-enum ec2i_message ec2i_write(enum host_pnpcfg_index index, uint8_t data)
-{
- enum ec2i_message ret = EC2I_WRITE_ERROR;
- /* critical section with interrupts off */
- uint32_t int_mask = read_clear_int_mask();
-
- /* Set index */
- if (ec2i_write_pnpcfg(EC2I_ACCESS_INDEX, index) == EC2I_WRITE_SUCCESS)
- /* Set data */
- ret = ec2i_write_pnpcfg(EC2I_ACCESS_DATA, data);
- /* restore interrupts */
- set_int_mask(int_mask);
-
- return ret;
-}
-
-static void pnpcfg_configure(const struct ec2i_t *settings, size_t entries)
-{
- size_t i;
-
- for (i = 0; i < entries; i++) {
- if (ec2i_write(settings[i].index_port, settings[i].data_port) ==
- EC2I_WRITE_ERROR) {
- ccprints("Failed to apply %zd", i);
- break;
- }
- }
-}
-
-#define PNPCFG(_s) \
- pnpcfg_configure(_s##_settings, ARRAY_SIZE(_s##_settings))
-
-static void pnpcfg_init(void)
-{
- /* Host access is disabled */
- IT83XX_EC2I_LSIOHA |= 0x3;
-
- PNPCFG(keyboard);
-#ifdef CONFIG_IT83XX_ENABLE_MOUSE_DEVICE
- PNPCFG(mouse);
-#endif
- PNPCFG(pm1);
- PNPCFG(pm2);
- PNPCFG(smfi);
- PNPCFG(pm3);
- PNPCFG(rtct);
-#ifdef CONFIG_UART_HOST
- PNPCFG(uart2);
-#endif
-}
-DECLARE_HOOK(HOOK_INIT, pnpcfg_init, HOOK_PRIO_DEFAULT);