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613 lines
16 KiB
613 lines
16 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* X-Gene SLIMpro I2C Driver |
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* |
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* Copyright (c) 2014, Applied Micro Circuits Corporation |
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* Author: Feng Kan <[email protected]> |
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* Author: Hieu Le <[email protected]> |
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* |
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* This driver provides support for X-Gene SLIMpro I2C device access |
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* using the APM X-Gene SLIMpro mailbox driver. |
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*/ |
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#include <acpi/pcc.h> |
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#include <linux/acpi.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/i2c.h> |
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#include <linux/interrupt.h> |
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#include <linux/io.h> |
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#include <linux/mailbox_client.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/platform_device.h> |
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|
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#define MAILBOX_OP_TIMEOUT 1000 /* Operation time out in ms */ |
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#define MAILBOX_I2C_INDEX 0 |
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#define SLIMPRO_IIC_BUS 1 /* Use I2C bus 1 only */ |
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#define SMBUS_CMD_LEN 1 |
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#define BYTE_DATA 1 |
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#define WORD_DATA 2 |
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#define BLOCK_DATA 3 |
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#define SLIMPRO_IIC_I2C_PROTOCOL 0 |
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#define SLIMPRO_IIC_SMB_PROTOCOL 1 |
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#define SLIMPRO_IIC_READ 0 |
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#define SLIMPRO_IIC_WRITE 1 |
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#define IIC_SMB_WITHOUT_DATA_LEN 0 |
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#define IIC_SMB_WITH_DATA_LEN 1 |
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#define SLIMPRO_DEBUG_MSG 0 |
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#define SLIMPRO_MSG_TYPE_SHIFT 28 |
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#define SLIMPRO_DBG_SUBTYPE_I2C1READ 4 |
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#define SLIMPRO_DBGMSG_TYPE_SHIFT 24 |
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#define SLIMPRO_DBGMSG_TYPE_MASK 0x0F000000U |
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#define SLIMPRO_IIC_DEV_SHIFT 23 |
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#define SLIMPRO_IIC_DEV_MASK 0x00800000U |
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#define SLIMPRO_IIC_DEVID_SHIFT 13 |
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#define SLIMPRO_IIC_DEVID_MASK 0x007FE000U |
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#define SLIMPRO_IIC_RW_SHIFT 12 |
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#define SLIMPRO_IIC_RW_MASK 0x00001000U |
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#define SLIMPRO_IIC_PROTO_SHIFT 11 |
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#define SLIMPRO_IIC_PROTO_MASK 0x00000800U |
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#define SLIMPRO_IIC_ADDRLEN_SHIFT 8 |
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#define SLIMPRO_IIC_ADDRLEN_MASK 0x00000700U |
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#define SLIMPRO_IIC_DATALEN_SHIFT 0 |
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#define SLIMPRO_IIC_DATALEN_MASK 0x000000FFU |
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/* |
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* SLIMpro I2C message encode |
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* |
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* dev - Controller number (0-based) |
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* chip - I2C chip address |
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* op - SLIMPRO_IIC_READ or SLIMPRO_IIC_WRITE |
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* proto - SLIMPRO_IIC_SMB_PROTOCOL or SLIMPRO_IIC_I2C_PROTOCOL |
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* addrlen - Length of the address field |
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* datalen - Length of the data field |
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*/ |
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#define SLIMPRO_IIC_ENCODE_MSG(dev, chip, op, proto, addrlen, datalen) \ |
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((SLIMPRO_DEBUG_MSG << SLIMPRO_MSG_TYPE_SHIFT) | \ |
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((SLIMPRO_DBG_SUBTYPE_I2C1READ << SLIMPRO_DBGMSG_TYPE_SHIFT) & \ |
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SLIMPRO_DBGMSG_TYPE_MASK) | \ |
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((dev << SLIMPRO_IIC_DEV_SHIFT) & SLIMPRO_IIC_DEV_MASK) | \ |
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((chip << SLIMPRO_IIC_DEVID_SHIFT) & SLIMPRO_IIC_DEVID_MASK) | \ |
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((op << SLIMPRO_IIC_RW_SHIFT) & SLIMPRO_IIC_RW_MASK) | \ |
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((proto << SLIMPRO_IIC_PROTO_SHIFT) & SLIMPRO_IIC_PROTO_MASK) | \ |
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((addrlen << SLIMPRO_IIC_ADDRLEN_SHIFT) & SLIMPRO_IIC_ADDRLEN_MASK) | \ |
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((datalen << SLIMPRO_IIC_DATALEN_SHIFT) & SLIMPRO_IIC_DATALEN_MASK)) |
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#define SLIMPRO_MSG_TYPE(v) (((v) & 0xF0000000) >> 28) |
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|
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/* |
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* Encode for upper address for block data |
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*/ |
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#define SLIMPRO_IIC_ENCODE_FLAG_BUFADDR 0x80000000 |
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#define SLIMPRO_IIC_ENCODE_FLAG_WITH_DATA_LEN(a) ((u32) (((a) << 30) \ |
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& 0x40000000)) |
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#define SLIMPRO_IIC_ENCODE_UPPER_BUFADDR(a) ((u32) (((a) >> 12) \ |
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& 0x3FF00000)) |
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#define SLIMPRO_IIC_ENCODE_ADDR(a) ((a) & 0x000FFFFF) |
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#define SLIMPRO_IIC_MSG_DWORD_COUNT 3 |
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|
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/* PCC related defines */ |
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#define PCC_SIGNATURE 0x50424300 |
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#define PCC_STS_CMD_COMPLETE BIT(0) |
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#define PCC_STS_SCI_DOORBELL BIT(1) |
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#define PCC_STS_ERR BIT(2) |
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#define PCC_STS_PLAT_NOTIFY BIT(3) |
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#define PCC_CMD_GENERATE_DB_INT BIT(15) |
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struct slimpro_i2c_dev { |
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struct i2c_adapter adapter; |
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struct device *dev; |
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struct mbox_chan *mbox_chan; |
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struct mbox_client mbox_client; |
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int mbox_idx; |
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struct completion rd_complete; |
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u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */ |
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u32 *resp_msg; |
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phys_addr_t comm_base_addr; |
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void *pcc_comm_addr; |
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}; |
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#define to_slimpro_i2c_dev(cl) \ |
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container_of(cl, struct slimpro_i2c_dev, mbox_client) |
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enum slimpro_i2c_version { |
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XGENE_SLIMPRO_I2C_V1 = 0, |
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XGENE_SLIMPRO_I2C_V2 = 1, |
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}; |
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|
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/* |
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* This function tests and clears a bitmask then returns its old value |
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*/ |
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static u16 xgene_word_tst_and_clr(u16 *addr, u16 mask) |
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{ |
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u16 ret, val; |
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val = le16_to_cpu(READ_ONCE(*addr)); |
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ret = val & mask; |
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val &= ~mask; |
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WRITE_ONCE(*addr, cpu_to_le16(val)); |
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return ret; |
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} |
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static void slimpro_i2c_rx_cb(struct mbox_client *cl, void *mssg) |
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{ |
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struct slimpro_i2c_dev *ctx = to_slimpro_i2c_dev(cl); |
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/* |
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* Response message format: |
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* mssg[0] is the return code of the operation |
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* mssg[1] is the first data word |
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* mssg[2] is NOT used |
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*/ |
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if (ctx->resp_msg) |
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*ctx->resp_msg = ((u32 *)mssg)[1]; |
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if (ctx->mbox_client.tx_block) |
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complete(&ctx->rd_complete); |
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} |
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static void slimpro_i2c_pcc_rx_cb(struct mbox_client *cl, void *msg) |
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{ |
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struct slimpro_i2c_dev *ctx = to_slimpro_i2c_dev(cl); |
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struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr; |
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/* Check if platform sends interrupt */ |
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if (!xgene_word_tst_and_clr(&generic_comm_base->status, |
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PCC_STS_SCI_DOORBELL)) |
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return; |
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if (xgene_word_tst_and_clr(&generic_comm_base->status, |
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PCC_STS_CMD_COMPLETE)) { |
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msg = generic_comm_base + 1; |
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/* Response message msg[1] contains the return value. */ |
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if (ctx->resp_msg) |
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*ctx->resp_msg = ((u32 *)msg)[1]; |
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complete(&ctx->rd_complete); |
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} |
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} |
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static void slimpro_i2c_pcc_tx_prepare(struct slimpro_i2c_dev *ctx, u32 *msg) |
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{ |
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struct acpi_pcct_shared_memory *generic_comm_base = ctx->pcc_comm_addr; |
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u32 *ptr = (void *)(generic_comm_base + 1); |
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u16 status; |
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int i; |
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WRITE_ONCE(generic_comm_base->signature, |
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cpu_to_le32(PCC_SIGNATURE | ctx->mbox_idx)); |
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WRITE_ONCE(generic_comm_base->command, |
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cpu_to_le16(SLIMPRO_MSG_TYPE(msg[0]) | PCC_CMD_GENERATE_DB_INT)); |
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status = le16_to_cpu(READ_ONCE(generic_comm_base->status)); |
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status &= ~PCC_STS_CMD_COMPLETE; |
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WRITE_ONCE(generic_comm_base->status, cpu_to_le16(status)); |
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/* Copy the message to the PCC comm space */ |
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for (i = 0; i < SLIMPRO_IIC_MSG_DWORD_COUNT; i++) |
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WRITE_ONCE(ptr[i], cpu_to_le32(msg[i])); |
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} |
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static int start_i2c_msg_xfer(struct slimpro_i2c_dev *ctx) |
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{ |
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if (ctx->mbox_client.tx_block || !acpi_disabled) { |
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if (!wait_for_completion_timeout(&ctx->rd_complete, |
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msecs_to_jiffies(MAILBOX_OP_TIMEOUT))) |
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return -ETIMEDOUT; |
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} |
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/* Check of invalid data or no device */ |
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if (*ctx->resp_msg == 0xffffffff) |
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return -ENODEV; |
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return 0; |
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} |
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static int slimpro_i2c_send_msg(struct slimpro_i2c_dev *ctx, |
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u32 *msg, |
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u32 *data) |
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{ |
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int rc; |
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ctx->resp_msg = data; |
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if (!acpi_disabled) { |
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reinit_completion(&ctx->rd_complete); |
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slimpro_i2c_pcc_tx_prepare(ctx, msg); |
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} |
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rc = mbox_send_message(ctx->mbox_chan, msg); |
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if (rc < 0) |
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goto err; |
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rc = start_i2c_msg_xfer(ctx); |
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err: |
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if (!acpi_disabled) |
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mbox_chan_txdone(ctx->mbox_chan, 0); |
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ctx->resp_msg = NULL; |
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return rc; |
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} |
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static int slimpro_i2c_rd(struct slimpro_i2c_dev *ctx, u32 chip, |
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u32 addr, u32 addrlen, u32 protocol, |
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u32 readlen, u32 *data) |
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{ |
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u32 msg[3]; |
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msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip, |
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SLIMPRO_IIC_READ, protocol, addrlen, readlen); |
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msg[1] = SLIMPRO_IIC_ENCODE_ADDR(addr); |
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msg[2] = 0; |
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return slimpro_i2c_send_msg(ctx, msg, data); |
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} |
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static int slimpro_i2c_wr(struct slimpro_i2c_dev *ctx, u32 chip, |
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u32 addr, u32 addrlen, u32 protocol, u32 writelen, |
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u32 data) |
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{ |
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u32 msg[3]; |
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msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip, |
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SLIMPRO_IIC_WRITE, protocol, addrlen, writelen); |
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msg[1] = SLIMPRO_IIC_ENCODE_ADDR(addr); |
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msg[2] = data; |
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return slimpro_i2c_send_msg(ctx, msg, msg); |
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} |
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static int slimpro_i2c_blkrd(struct slimpro_i2c_dev *ctx, u32 chip, u32 addr, |
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u32 addrlen, u32 protocol, u32 readlen, |
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u32 with_data_len, void *data) |
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{ |
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dma_addr_t paddr; |
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u32 msg[3]; |
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int rc; |
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paddr = dma_map_single(ctx->dev, ctx->dma_buffer, readlen, DMA_FROM_DEVICE); |
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if (dma_mapping_error(ctx->dev, paddr)) { |
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dev_err(&ctx->adapter.dev, "Error in mapping dma buffer %p\n", |
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ctx->dma_buffer); |
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return -ENOMEM; |
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} |
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msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip, SLIMPRO_IIC_READ, |
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protocol, addrlen, readlen); |
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msg[1] = SLIMPRO_IIC_ENCODE_FLAG_BUFADDR | |
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SLIMPRO_IIC_ENCODE_FLAG_WITH_DATA_LEN(with_data_len) | |
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SLIMPRO_IIC_ENCODE_UPPER_BUFADDR(paddr) | |
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SLIMPRO_IIC_ENCODE_ADDR(addr); |
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msg[2] = (u32)paddr; |
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rc = slimpro_i2c_send_msg(ctx, msg, msg); |
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/* Copy to destination */ |
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memcpy(data, ctx->dma_buffer, readlen); |
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dma_unmap_single(ctx->dev, paddr, readlen, DMA_FROM_DEVICE); |
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return rc; |
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} |
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static int slimpro_i2c_blkwr(struct slimpro_i2c_dev *ctx, u32 chip, |
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u32 addr, u32 addrlen, u32 protocol, u32 writelen, |
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void *data) |
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{ |
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dma_addr_t paddr; |
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u32 msg[3]; |
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int rc; |
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memcpy(ctx->dma_buffer, data, writelen); |
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paddr = dma_map_single(ctx->dev, ctx->dma_buffer, writelen, |
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DMA_TO_DEVICE); |
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if (dma_mapping_error(ctx->dev, paddr)) { |
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dev_err(&ctx->adapter.dev, "Error in mapping dma buffer %p\n", |
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ctx->dma_buffer); |
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return -ENOMEM; |
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} |
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msg[0] = SLIMPRO_IIC_ENCODE_MSG(SLIMPRO_IIC_BUS, chip, SLIMPRO_IIC_WRITE, |
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protocol, addrlen, writelen); |
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msg[1] = SLIMPRO_IIC_ENCODE_FLAG_BUFADDR | |
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SLIMPRO_IIC_ENCODE_UPPER_BUFADDR(paddr) | |
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SLIMPRO_IIC_ENCODE_ADDR(addr); |
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msg[2] = (u32)paddr; |
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if (ctx->mbox_client.tx_block) |
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reinit_completion(&ctx->rd_complete); |
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rc = slimpro_i2c_send_msg(ctx, msg, msg); |
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dma_unmap_single(ctx->dev, paddr, writelen, DMA_TO_DEVICE); |
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return rc; |
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} |
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static int xgene_slimpro_i2c_xfer(struct i2c_adapter *adap, u16 addr, |
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unsigned short flags, char read_write, |
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u8 command, int size, |
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union i2c_smbus_data *data) |
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{ |
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struct slimpro_i2c_dev *ctx = i2c_get_adapdata(adap); |
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int ret = -EOPNOTSUPP; |
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u32 val; |
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|
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switch (size) { |
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case I2C_SMBUS_BYTE: |
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if (read_write == I2C_SMBUS_READ) { |
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ret = slimpro_i2c_rd(ctx, addr, 0, 0, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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BYTE_DATA, &val); |
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data->byte = val; |
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} else { |
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ret = slimpro_i2c_wr(ctx, addr, command, SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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0, 0); |
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} |
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break; |
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case I2C_SMBUS_BYTE_DATA: |
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if (read_write == I2C_SMBUS_READ) { |
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ret = slimpro_i2c_rd(ctx, addr, command, SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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BYTE_DATA, &val); |
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data->byte = val; |
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} else { |
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val = data->byte; |
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ret = slimpro_i2c_wr(ctx, addr, command, SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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BYTE_DATA, val); |
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} |
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break; |
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case I2C_SMBUS_WORD_DATA: |
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if (read_write == I2C_SMBUS_READ) { |
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ret = slimpro_i2c_rd(ctx, addr, command, SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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WORD_DATA, &val); |
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data->word = val; |
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} else { |
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val = data->word; |
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ret = slimpro_i2c_wr(ctx, addr, command, SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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WORD_DATA, val); |
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} |
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break; |
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case I2C_SMBUS_BLOCK_DATA: |
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if (read_write == I2C_SMBUS_READ) { |
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ret = slimpro_i2c_blkrd(ctx, addr, command, |
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SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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I2C_SMBUS_BLOCK_MAX + 1, |
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IIC_SMB_WITH_DATA_LEN, |
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&data->block[0]); |
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|
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} else { |
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ret = slimpro_i2c_blkwr(ctx, addr, command, |
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SMBUS_CMD_LEN, |
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SLIMPRO_IIC_SMB_PROTOCOL, |
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data->block[0] + 1, |
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&data->block[0]); |
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} |
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break; |
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case I2C_SMBUS_I2C_BLOCK_DATA: |
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if (read_write == I2C_SMBUS_READ) { |
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ret = slimpro_i2c_blkrd(ctx, addr, |
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command, |
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SMBUS_CMD_LEN, |
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SLIMPRO_IIC_I2C_PROTOCOL, |
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I2C_SMBUS_BLOCK_MAX, |
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IIC_SMB_WITHOUT_DATA_LEN, |
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&data->block[1]); |
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} else { |
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ret = slimpro_i2c_blkwr(ctx, addr, command, |
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SMBUS_CMD_LEN, |
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SLIMPRO_IIC_I2C_PROTOCOL, |
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data->block[0], |
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&data->block[1]); |
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} |
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break; |
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default: |
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break; |
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} |
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return ret; |
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} |
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|
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/* |
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* Return list of supported functionality. |
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*/ |
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static u32 xgene_slimpro_i2c_func(struct i2c_adapter *adapter) |
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{ |
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return I2C_FUNC_SMBUS_BYTE | |
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I2C_FUNC_SMBUS_BYTE_DATA | |
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I2C_FUNC_SMBUS_WORD_DATA | |
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I2C_FUNC_SMBUS_BLOCK_DATA | |
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I2C_FUNC_SMBUS_I2C_BLOCK; |
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} |
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static const struct i2c_algorithm xgene_slimpro_i2c_algorithm = { |
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.smbus_xfer = xgene_slimpro_i2c_xfer, |
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.functionality = xgene_slimpro_i2c_func, |
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}; |
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|
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static int xgene_slimpro_i2c_probe(struct platform_device *pdev) |
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{ |
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struct slimpro_i2c_dev *ctx; |
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struct i2c_adapter *adapter; |
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struct mbox_client *cl; |
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int rc; |
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ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); |
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if (!ctx) |
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return -ENOMEM; |
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ctx->dev = &pdev->dev; |
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platform_set_drvdata(pdev, ctx); |
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cl = &ctx->mbox_client; |
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|
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/* Request mailbox channel */ |
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cl->dev = &pdev->dev; |
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init_completion(&ctx->rd_complete); |
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cl->tx_tout = MAILBOX_OP_TIMEOUT; |
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cl->knows_txdone = false; |
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if (acpi_disabled) { |
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cl->tx_block = true; |
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cl->rx_callback = slimpro_i2c_rx_cb; |
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ctx->mbox_chan = mbox_request_channel(cl, MAILBOX_I2C_INDEX); |
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if (IS_ERR(ctx->mbox_chan)) { |
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dev_err(&pdev->dev, "i2c mailbox channel request failed\n"); |
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return PTR_ERR(ctx->mbox_chan); |
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} |
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} else { |
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struct acpi_pcct_hw_reduced *cppc_ss; |
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const struct acpi_device_id *acpi_id; |
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int version = XGENE_SLIMPRO_I2C_V1; |
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acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table, |
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&pdev->dev); |
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if (!acpi_id) |
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return -EINVAL; |
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version = (int)acpi_id->driver_data; |
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if (device_property_read_u32(&pdev->dev, "pcc-channel", |
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&ctx->mbox_idx)) |
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ctx->mbox_idx = MAILBOX_I2C_INDEX; |
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|
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cl->tx_block = false; |
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cl->rx_callback = slimpro_i2c_pcc_rx_cb; |
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ctx->mbox_chan = pcc_mbox_request_channel(cl, ctx->mbox_idx); |
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if (IS_ERR(ctx->mbox_chan)) { |
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dev_err(&pdev->dev, "PCC mailbox channel request failed\n"); |
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return PTR_ERR(ctx->mbox_chan); |
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} |
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|
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/* |
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* The PCC mailbox controller driver should |
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* have parsed the PCCT (global table of all |
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* PCC channels) and stored pointers to the |
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* subspace communication region in con_priv. |
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*/ |
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cppc_ss = ctx->mbox_chan->con_priv; |
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if (!cppc_ss) { |
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dev_err(&pdev->dev, "PPC subspace not found\n"); |
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rc = -ENOENT; |
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goto mbox_err; |
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} |
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|
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if (!ctx->mbox_chan->mbox->txdone_irq) { |
|
dev_err(&pdev->dev, "PCC IRQ not supported\n"); |
|
rc = -ENOENT; |
|
goto mbox_err; |
|
} |
|
|
|
/* |
|
* This is the shared communication region |
|
* for the OS and Platform to communicate over. |
|
*/ |
|
ctx->comm_base_addr = cppc_ss->base_address; |
|
if (ctx->comm_base_addr) { |
|
if (version == XGENE_SLIMPRO_I2C_V2) |
|
ctx->pcc_comm_addr = memremap( |
|
ctx->comm_base_addr, |
|
cppc_ss->length, |
|
MEMREMAP_WT); |
|
else |
|
ctx->pcc_comm_addr = memremap( |
|
ctx->comm_base_addr, |
|
cppc_ss->length, |
|
MEMREMAP_WB); |
|
} else { |
|
dev_err(&pdev->dev, "Failed to get PCC comm region\n"); |
|
rc = -ENOENT; |
|
goto mbox_err; |
|
} |
|
|
|
if (!ctx->pcc_comm_addr) { |
|
dev_err(&pdev->dev, |
|
"Failed to ioremap PCC comm region\n"); |
|
rc = -ENOMEM; |
|
goto mbox_err; |
|
} |
|
} |
|
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
|
if (rc) |
|
dev_warn(&pdev->dev, "Unable to set dma mask\n"); |
|
|
|
/* Setup I2C adapter */ |
|
adapter = &ctx->adapter; |
|
snprintf(adapter->name, sizeof(adapter->name), "MAILBOX I2C"); |
|
adapter->algo = &xgene_slimpro_i2c_algorithm; |
|
adapter->class = I2C_CLASS_HWMON; |
|
adapter->dev.parent = &pdev->dev; |
|
adapter->dev.of_node = pdev->dev.of_node; |
|
ACPI_COMPANION_SET(&adapter->dev, ACPI_COMPANION(&pdev->dev)); |
|
i2c_set_adapdata(adapter, ctx); |
|
rc = i2c_add_adapter(adapter); |
|
if (rc) |
|
goto mbox_err; |
|
|
|
dev_info(&pdev->dev, "Mailbox I2C Adapter registered\n"); |
|
return 0; |
|
|
|
mbox_err: |
|
if (acpi_disabled) |
|
mbox_free_channel(ctx->mbox_chan); |
|
else |
|
pcc_mbox_free_channel(ctx->mbox_chan); |
|
|
|
return rc; |
|
} |
|
|
|
static int xgene_slimpro_i2c_remove(struct platform_device *pdev) |
|
{ |
|
struct slimpro_i2c_dev *ctx = platform_get_drvdata(pdev); |
|
|
|
i2c_del_adapter(&ctx->adapter); |
|
|
|
if (acpi_disabled) |
|
mbox_free_channel(ctx->mbox_chan); |
|
else |
|
pcc_mbox_free_channel(ctx->mbox_chan); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct of_device_id xgene_slimpro_i2c_dt_ids[] = { |
|
{.compatible = "apm,xgene-slimpro-i2c" }, |
|
{}, |
|
}; |
|
MODULE_DEVICE_TABLE(of, xgene_slimpro_i2c_dt_ids); |
|
|
|
#ifdef CONFIG_ACPI |
|
static const struct acpi_device_id xgene_slimpro_i2c_acpi_ids[] = { |
|
{"APMC0D40", XGENE_SLIMPRO_I2C_V1}, |
|
{"APMC0D8B", XGENE_SLIMPRO_I2C_V2}, |
|
{} |
|
}; |
|
MODULE_DEVICE_TABLE(acpi, xgene_slimpro_i2c_acpi_ids); |
|
#endif |
|
|
|
static struct platform_driver xgene_slimpro_i2c_driver = { |
|
.probe = xgene_slimpro_i2c_probe, |
|
.remove = xgene_slimpro_i2c_remove, |
|
.driver = { |
|
.name = "xgene-slimpro-i2c", |
|
.of_match_table = of_match_ptr(xgene_slimpro_i2c_dt_ids), |
|
.acpi_match_table = ACPI_PTR(xgene_slimpro_i2c_acpi_ids) |
|
}, |
|
}; |
|
|
|
module_platform_driver(xgene_slimpro_i2c_driver); |
|
|
|
MODULE_DESCRIPTION("APM X-Gene SLIMpro I2C driver"); |
|
MODULE_AUTHOR("Feng Kan <[email protected]>"); |
|
MODULE_AUTHOR("Hieu Le <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|