247 lines
7.2 KiB
C
247 lines
7.2 KiB
C
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/*
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* Copyright (c) 2016 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/of_address.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <soc/samsung/acpm_mfd.h>
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#include <soc/samsung/acpm_ipc_ctrl.h>
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int exynos_acpm_read_reg(struct device_node *acpm_mfd_node, u8 channel, u16 type, u8 reg, u8 *dest)
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{
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unsigned int channel_num, size;
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struct ipc_config config;
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unsigned int command[4] = {0,};
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int ret = 0;
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if (!acpm_ipc_request_channel(acpm_mfd_node, NULL, &channel_num, &size)) {
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config.cmd = command;
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config.cmd[0] = set_protocol(type, TYPE) | set_protocol(reg, REG) |
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set_protocol(channel, CHANNEL);
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config.cmd[1] = set_protocol(FUNC_READ, FUNC);
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config.response = true;
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config.indirection = false;
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ACPM_MFD_PRINT("%s - addr: 0x%03x\n",
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__func__, set_protocol(type, TYPE) | set_protocol(reg, REG));
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ret = acpm_ipc_send_data(channel_num, &config);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - acpm_ipc_send_data fail.\n", __func__);
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return ret;
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}
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*dest = read_protocol(config.cmd[1], DEST);
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ret = read_protocol(config.cmd[1], RETURN);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - APM's speedy_rx fail.\n", __func__);
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return ret;
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}
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ACPM_MFD_PRINT("%s - data = 0x%02x ret = 0x%02x\n",
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__func__, *dest, ret);
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acpm_ipc_release_channel(acpm_mfd_node, channel_num);
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} else {
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pr_err(ACPM_MFD_PREFIX "%s ipc request_channel fail, id:%u, size:%u\n",
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__func__, channel_num, size);
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ret = -EBUSY;
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(exynos_acpm_read_reg);
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int exynos_acpm_bulk_read(struct device_node *acpm_mfd_node, u8 channel, u16 type, u8 reg, int count, u8 *buf)
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{
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unsigned int channel_num, size;
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struct ipc_config config;
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unsigned int command[4] = {0,};
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int i, ret = 0;
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if (!acpm_ipc_request_channel(acpm_mfd_node, NULL, &channel_num, &size)) {
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config.cmd = command;
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config.cmd[0] = set_protocol(type, TYPE) | set_protocol(reg, REG) |
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set_protocol(channel, CHANNEL);
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config.cmd[1] = set_protocol(FUNC_BULK_READ, FUNC) | set_protocol(count, CNT);
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config.response = true;
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config.indirection = false;
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ACPM_MFD_PRINT("%s - addr: 0x%03x\n",
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__func__, set_protocol(type, TYPE) | set_protocol(reg, REG));
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ret = acpm_ipc_send_data(channel_num, &config);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - acpm_ipc_send_data fail.\n", __func__);
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return ret;
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}
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ret = read_protocol(config.cmd[1], RETURN);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - APM's speedy_rx fail.\n", __func__);
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return ret;
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}
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for (i = 0; i < count; i++) {
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if (i < 4)
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buf[i] = read_bulk_protocol(config.cmd[2], BULK_VAL, i);
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else
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buf[i] = read_bulk_protocol(config.cmd[3], BULK_VAL , i - 4);
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}
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acpm_ipc_release_channel(acpm_mfd_node, channel_num);
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} else {
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pr_err(ACPM_MFD_PREFIX "%s ipc request_channel fail, id:%u, size:%u\n",
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__func__, channel_num, size);
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ret = -EBUSY;
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(exynos_acpm_bulk_read);
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int exynos_acpm_write_reg(struct device_node *acpm_mfd_node, u8 channel, u16 type, u8 reg, u8 value)
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{
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unsigned int channel_num, size;
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struct ipc_config config;
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unsigned int command[4] = {0,};
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int ret = 0;
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if (!acpm_ipc_request_channel(acpm_mfd_node, NULL, &channel_num, &size)) {
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config.cmd = command;
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config.cmd[0] = set_protocol(type, TYPE) | set_protocol(reg, REG) |
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set_protocol(channel, CHANNEL);;
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config.cmd[1] = set_protocol(FUNC_WRITE, FUNC) | set_protocol(value, WRITE_VAL);
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config.response = true;
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config.indirection = false;
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ACPM_MFD_PRINT("%s - addr: 0x%03x val: 0x%02x\n",
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__func__, set_protocol(type, TYPE) | set_protocol(reg, REG), value);
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ret = acpm_ipc_send_data(channel_num, &config);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - acpm_ipc_send_data fail.\n", __func__);
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return ret;
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}
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ret = read_protocol(config.cmd[1], RETURN);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - APM's speedy_tx fail.\n", __func__);
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return ret;
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}
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ACPM_MFD_PRINT("%s - read(ret) val: 0x%02x\n", __func__, ret);
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acpm_ipc_release_channel(acpm_mfd_node, channel_num);
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} else {
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pr_err(ACPM_MFD_PREFIX "%s ipc request_channel fail, id:%u, size:%u\n",
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__func__, channel_num, size);
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ret = -EBUSY;
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(exynos_acpm_write_reg);
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int exynos_acpm_bulk_write(struct device_node *acpm_mfd_node, u8 channel, u16 type, u8 reg, int count, u8 *buf)
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{
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unsigned int channel_num, size;
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struct ipc_config config;
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unsigned int command[4] = {0,};
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int ret = 0;
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int i;
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if (!acpm_ipc_request_channel(acpm_mfd_node, NULL, &channel_num, &size)) {
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config.cmd = command;
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config.cmd[0] = set_protocol(type, TYPE) | set_protocol(reg, REG) |
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set_protocol(channel, CHANNEL);
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config.cmd[1] = set_protocol(FUNC_BULK_WRITE, FUNC) | set_protocol(count, CNT);
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config.response = true;
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config.indirection = false;
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ACPM_MFD_PRINT("%s - addr: 0x%03x\n cnt: 0x%02x\n",
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__func__, set_protocol(type, TYPE) | set_protocol(reg, REG), count);
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for (i = 0; i < count; i++) {
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if (i < 4)
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config.cmd[2] |= set_bulk_protocol(buf[i], BULK_VAL, i);
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else
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config.cmd[3] |= set_bulk_protocol(buf[i], BULK_VAL, i - 4);
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}
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ret = acpm_ipc_send_data(channel_num, &config);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - acpm_ipc_send_data fail.\n", __func__);
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return ret;
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}
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ret = read_protocol(config.cmd[1], RETURN);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - APM's speedy_tx fail.\n", __func__);
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return ret;
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}
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acpm_ipc_release_channel(acpm_mfd_node, channel_num);
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} else {
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pr_err(ACPM_MFD_PREFIX "%s ipc request_channel fail, id:%u, size:%u\n",
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__func__, channel_num, size);
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ret = -EBUSY;
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(exynos_acpm_bulk_write);
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int exynos_acpm_update_reg(struct device_node *acpm_mfd_node, u8 channel, u16 type, u8 reg, u8 value, u8 mask)
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{
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unsigned int channel_num, size;
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struct ipc_config config;
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unsigned int command[4] = {0,};
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int ret = 0;
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if (!acpm_ipc_request_channel(acpm_mfd_node, NULL, &channel_num, &size)) {
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config.cmd = command;
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config.cmd[0] = set_protocol(type, TYPE) | set_protocol(reg, REG) |
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set_protocol(channel, CHANNEL);
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config.cmd[1] = set_protocol(FUNC_UPDATE, FUNC)
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| set_protocol(value, UPDATE_VAL)
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| set_protocol(mask, UPDATE_MASK);
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config.response = true;
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config.indirection = false;
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ACPM_MFD_PRINT("%s - addr: 0x%03x val: 0x%02x mask: 0x%02x\n",
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__func__, set_protocol(type, TYPE) | set_protocol(reg, REG), value, mask);
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ret = acpm_ipc_send_data(channel_num, &config);
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if (ret) {
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pr_err(ACPM_MFD_PREFIX "%s - acpm_ipc_send_data fail.\n", __func__);
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return ret;
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}
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ret = read_protocol(config.cmd[1], RETURN);
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if (ret) {
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if (ret == 1)
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pr_err(ACPM_MFD_PREFIX "%s - APM's speedy_rx fail.\n", __func__);
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else if (ret == 2)
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pr_err(ACPM_MFD_PREFIX "%s - APM's speedy_tx fail.\n", __func__);
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return ret;
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}
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acpm_ipc_release_channel(acpm_mfd_node, channel_num);
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} else {
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pr_err(ACPM_MFD_PREFIX "%s ipc request_channel fail, id:%u, size:%u\n",
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__func__, channel_num, size);
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ret = -EBUSY;
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(exynos_acpm_update_reg);
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