850 lines
21 KiB
C
850 lines
21 KiB
C
/**
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* Copyright (c) 2014 Redpine Signals Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include <linux/module.h>
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#include "rsi_sdio.h"
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#include "rsi_common.h"
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/**
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* rsi_sdio_set_cmd52_arg() - This function prepares cmd 52 read/write arg.
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* @rw: Read/write
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* @func: function number
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* @raw: indicates whether to perform read after write
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* @address: address to which to read/write
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* @writedata: data to write
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*
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* Return: argument
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*/
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static u32 rsi_sdio_set_cmd52_arg(bool rw,
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u8 func,
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u8 raw,
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u32 address,
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u8 writedata)
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{
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return ((rw & 1) << 31) | ((func & 0x7) << 28) |
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((raw & 1) << 27) | (1 << 26) |
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((address & 0x1FFFF) << 9) | (1 << 8) |
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(writedata & 0xFF);
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}
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/**
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* rsi_cmd52writebyte() - This function issues cmd52 byte write onto the card.
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* @card: Pointer to the mmc_card.
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* @address: Address to write.
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* @byte: Data to write.
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*
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* Return: Write status.
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*/
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static int rsi_cmd52writebyte(struct mmc_card *card,
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u32 address,
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u8 byte)
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{
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struct mmc_command io_cmd;
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u32 arg;
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memset(&io_cmd, 0, sizeof(io_cmd));
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arg = rsi_sdio_set_cmd52_arg(1, 0, 0, address, byte);
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io_cmd.opcode = SD_IO_RW_DIRECT;
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io_cmd.arg = arg;
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io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
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return mmc_wait_for_cmd(card->host, &io_cmd, 0);
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}
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/**
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* rsi_cmd52readbyte() - This function issues cmd52 byte read onto the card.
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* @card: Pointer to the mmc_card.
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* @address: Address to read from.
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* @byte: Variable to store read value.
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*
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* Return: Read status.
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*/
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static int rsi_cmd52readbyte(struct mmc_card *card,
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u32 address,
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u8 *byte)
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{
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struct mmc_command io_cmd;
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u32 arg;
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int err;
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memset(&io_cmd, 0, sizeof(io_cmd));
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arg = rsi_sdio_set_cmd52_arg(0, 0, 0, address, 0);
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io_cmd.opcode = SD_IO_RW_DIRECT;
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io_cmd.arg = arg;
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io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
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err = mmc_wait_for_cmd(card->host, &io_cmd, 0);
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if ((!err) && (byte))
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*byte = io_cmd.resp[0] & 0xFF;
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return err;
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}
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/**
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* rsi_issue_sdiocommand() - This function issues sdio commands.
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* @func: Pointer to the sdio_func structure.
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* @opcode: Opcode value.
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* @arg: Arguments to pass.
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* @flags: Flags which are set.
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* @resp: Pointer to store response.
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*
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* Return: err: command status as 0 or -1.
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*/
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static int rsi_issue_sdiocommand(struct sdio_func *func,
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u32 opcode,
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u32 arg,
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u32 flags,
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u32 *resp)
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{
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struct mmc_command cmd;
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struct mmc_host *host;
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int err;
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host = func->card->host;
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memset(&cmd, 0, sizeof(struct mmc_command));
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cmd.opcode = opcode;
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cmd.arg = arg;
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cmd.flags = flags;
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err = mmc_wait_for_cmd(host, &cmd, 3);
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if ((!err) && (resp))
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*resp = cmd.resp[0];
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return err;
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}
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/**
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* rsi_handle_interrupt() - This function is called upon the occurence
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* of an interrupt.
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* @function: Pointer to the sdio_func structure.
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*
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* Return: None.
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*/
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static void rsi_handle_interrupt(struct sdio_func *function)
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{
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struct rsi_hw *adapter = sdio_get_drvdata(function);
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sdio_release_host(function);
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rsi_interrupt_handler(adapter);
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sdio_claim_host(function);
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}
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/**
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* rsi_reset_card() - This function resets and re-initializes the card.
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* @pfunction: Pointer to the sdio_func structure.
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*
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* Return: None.
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*/
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static void rsi_reset_card(struct sdio_func *pfunction)
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{
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int ret = 0;
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int err;
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struct mmc_card *card = pfunction->card;
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struct mmc_host *host = card->host;
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u8 cmd52_resp;
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u32 clock, resp, i;
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u16 rca;
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/* Reset 9110 chip */
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ret = rsi_cmd52writebyte(pfunction->card,
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SDIO_CCCR_ABORT,
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(1 << 3));
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/* Card will not send any response as it is getting reset immediately
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* Hence expect a timeout status from host controller
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*/
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if (ret != -ETIMEDOUT)
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rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret);
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/* Wait for few milli seconds to get rid of residue charges if any */
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msleep(20);
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/* Initialize the SDIO card */
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host->ios.chip_select = MMC_CS_DONTCARE;
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host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
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host->ios.power_mode = MMC_POWER_UP;
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host->ios.bus_width = MMC_BUS_WIDTH_1;
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host->ios.timing = MMC_TIMING_LEGACY;
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host->ops->set_ios(host, &host->ios);
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/*
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* This delay should be sufficient to allow the power supply
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* to reach the minimum voltage.
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*/
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msleep(20);
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host->ios.clock = host->f_min;
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host->ios.power_mode = MMC_POWER_ON;
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host->ops->set_ios(host, &host->ios);
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/*
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* This delay must be at least 74 clock sizes, or 1 ms, or the
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* time required to reach a stable voltage.
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*/
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msleep(20);
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/* Issue CMD0. Goto idle state */
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host->ios.chip_select = MMC_CS_HIGH;
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host->ops->set_ios(host, &host->ios);
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msleep(20);
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err = rsi_issue_sdiocommand(pfunction,
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MMC_GO_IDLE_STATE,
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0,
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(MMC_RSP_NONE | MMC_CMD_BC),
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NULL);
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host->ios.chip_select = MMC_CS_DONTCARE;
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host->ops->set_ios(host, &host->ios);
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msleep(20);
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host->use_spi_crc = 0;
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if (err)
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rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err);
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if (!host->ocr_avail) {
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/* Issue CMD5, arg = 0 */
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err = rsi_issue_sdiocommand(pfunction,
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SD_IO_SEND_OP_COND,
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0,
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(MMC_RSP_R4 | MMC_CMD_BCR),
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&resp);
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if (err)
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rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
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__func__, err);
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host->ocr_avail = resp;
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}
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/* Issue CMD5, arg = ocr. Wait till card is ready */
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for (i = 0; i < 100; i++) {
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err = rsi_issue_sdiocommand(pfunction,
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SD_IO_SEND_OP_COND,
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host->ocr_avail,
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(MMC_RSP_R4 | MMC_CMD_BCR),
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&resp);
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if (err) {
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rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
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__func__, err);
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break;
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}
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if (resp & MMC_CARD_BUSY)
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break;
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msleep(20);
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}
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if ((i == 100) || (err)) {
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rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n",
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__func__, i, err);
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return;
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}
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/* Issue CMD3, get RCA */
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err = rsi_issue_sdiocommand(pfunction,
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SD_SEND_RELATIVE_ADDR,
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0,
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(MMC_RSP_R6 | MMC_CMD_BCR),
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&resp);
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if (err) {
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rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err);
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return;
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}
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rca = resp >> 16;
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host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
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host->ops->set_ios(host, &host->ios);
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/* Issue CMD7, select card */
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err = rsi_issue_sdiocommand(pfunction,
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MMC_SELECT_CARD,
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(rca << 16),
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(MMC_RSP_R1 | MMC_CMD_AC),
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NULL);
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if (err) {
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rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err);
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return;
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}
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/* Enable high speed */
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if (card->host->caps & MMC_CAP_SD_HIGHSPEED) {
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rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__);
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err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp);
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if (err) {
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rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n",
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__func__, err);
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} else {
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err = rsi_cmd52writebyte(card,
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SDIO_CCCR_SPEED,
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(cmd52_resp | SDIO_SPEED_EHS));
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if (err) {
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rsi_dbg(ERR_ZONE,
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"%s: CCR speed regwrite failed %d\n",
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__func__, err);
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return;
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}
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host->ios.timing = MMC_TIMING_SD_HS;
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host->ops->set_ios(host, &host->ios);
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}
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}
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/* Set clock */
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if (mmc_card_hs(card))
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clock = 50000000;
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else
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clock = card->cis.max_dtr;
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if (clock > host->f_max)
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clock = host->f_max;
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host->ios.clock = clock;
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host->ops->set_ios(host, &host->ios);
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if (card->host->caps & MMC_CAP_4_BIT_DATA) {
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/* CMD52: Set bus width & disable card detect resistor */
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err = rsi_cmd52writebyte(card,
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SDIO_CCCR_IF,
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(SDIO_BUS_CD_DISABLE |
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SDIO_BUS_WIDTH_4BIT));
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if (err) {
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rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n",
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__func__, err);
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return;
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}
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host->ios.bus_width = MMC_BUS_WIDTH_4;
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host->ops->set_ios(host, &host->ios);
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}
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}
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/**
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* rsi_setclock() - This function sets the clock frequency.
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* @adapter: Pointer to the adapter structure.
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* @freq: Clock frequency.
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*
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* Return: None.
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*/
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static void rsi_setclock(struct rsi_hw *adapter, u32 freq)
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{
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struct rsi_91x_sdiodev *dev =
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(struct rsi_91x_sdiodev *)adapter->rsi_dev;
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struct mmc_host *host = dev->pfunction->card->host;
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u32 clock;
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clock = freq * 1000;
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if (clock > host->f_max)
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clock = host->f_max;
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host->ios.clock = clock;
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host->ops->set_ios(host, &host->ios);
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}
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/**
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* rsi_setblocklength() - This function sets the host block length.
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* @adapter: Pointer to the adapter structure.
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* @length: Block length to be set.
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*
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* Return: status: 0 on success, -1 on failure.
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*/
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static int rsi_setblocklength(struct rsi_hw *adapter, u32 length)
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{
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struct rsi_91x_sdiodev *dev =
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(struct rsi_91x_sdiodev *)adapter->rsi_dev;
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int status;
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rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__);
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status = sdio_set_block_size(dev->pfunction, length);
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dev->pfunction->max_blksize = 256;
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rsi_dbg(INFO_ZONE,
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"%s: Operational blk length is %d\n", __func__, length);
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return status;
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}
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/**
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* rsi_setupcard() - This function queries and sets the card's features.
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* @adapter: Pointer to the adapter structure.
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*
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* Return: status: 0 on success, -1 on failure.
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*/
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static int rsi_setupcard(struct rsi_hw *adapter)
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{
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struct rsi_91x_sdiodev *dev =
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(struct rsi_91x_sdiodev *)adapter->rsi_dev;
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int status = 0;
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rsi_setclock(adapter, 50000);
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dev->tx_blk_size = 256;
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status = rsi_setblocklength(adapter, dev->tx_blk_size);
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if (status)
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rsi_dbg(ERR_ZONE,
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"%s: Unable to set block length\n", __func__);
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return status;
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}
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/**
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* rsi_sdio_read_register() - This function reads one byte of information
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* from a register.
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* @adapter: Pointer to the adapter structure.
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* @addr: Address of the register.
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* @data: Pointer to the data that stores the data read.
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*
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* Return: 0 on success, -1 on failure.
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*/
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int rsi_sdio_read_register(struct rsi_hw *adapter,
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u32 addr,
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u8 *data)
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{
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struct rsi_91x_sdiodev *dev =
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(struct rsi_91x_sdiodev *)adapter->rsi_dev;
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u8 fun_num = 0;
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int status;
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sdio_claim_host(dev->pfunction);
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if (fun_num == 0)
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*data = sdio_f0_readb(dev->pfunction, addr, &status);
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else
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*data = sdio_readb(dev->pfunction, addr, &status);
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sdio_release_host(dev->pfunction);
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return status;
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}
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/**
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* rsi_sdio_write_register() - This function writes one byte of information
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* into a register.
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* @adapter: Pointer to the adapter structure.
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* @function: Function Number.
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* @addr: Address of the register.
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* @data: Pointer to the data tha has to be written.
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*
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* Return: 0 on success, -1 on failure.
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*/
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int rsi_sdio_write_register(struct rsi_hw *adapter,
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u8 function,
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u32 addr,
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u8 *data)
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{
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struct rsi_91x_sdiodev *dev =
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(struct rsi_91x_sdiodev *)adapter->rsi_dev;
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int status = 0;
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sdio_claim_host(dev->pfunction);
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if (function == 0)
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sdio_f0_writeb(dev->pfunction, *data, addr, &status);
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else
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sdio_writeb(dev->pfunction, *data, addr, &status);
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sdio_release_host(dev->pfunction);
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return status;
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}
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/**
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* rsi_sdio_ack_intr() - This function acks the interrupt received.
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* @adapter: Pointer to the adapter structure.
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* @int_bit: Interrupt bit to write into register.
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*
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* Return: None.
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*/
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void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit)
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{
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int status;
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status = rsi_sdio_write_register(adapter,
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1,
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(SDIO_FUN1_INTR_CLR_REG |
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RSI_SD_REQUEST_MASTER),
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&int_bit);
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if (status)
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rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__);
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}
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/**
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* rsi_sdio_read_register_multiple() - This function read multiple bytes of
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* information from the SD card.
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* @adapter: Pointer to the adapter structure.
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* @addr: Address of the register.
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* @count: Number of multiple bytes to be read.
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* @data: Pointer to the read data.
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*
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* Return: 0 on success, -1 on failure.
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*/
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static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter,
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u32 addr,
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u32 count,
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u8 *data)
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{
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struct rsi_91x_sdiodev *dev =
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(struct rsi_91x_sdiodev *)adapter->rsi_dev;
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u32 status;
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sdio_claim_host(dev->pfunction);
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status = sdio_readsb(dev->pfunction, data, addr, count);
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sdio_release_host(dev->pfunction);
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if (status != 0)
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rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__);
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return status;
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}
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/**
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* rsi_sdio_write_register_multiple() - This function writes multiple bytes of
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* information to the SD card.
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* @adapter: Pointer to the adapter structure.
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* @addr: Address of the register.
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* @data: Pointer to the data that has to be written.
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* @count: Number of multiple bytes to be written.
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*
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|
* Return: 0 on success, -1 on failure.
|
|
*/
|
|
int rsi_sdio_write_register_multiple(struct rsi_hw *adapter,
|
|
u32 addr,
|
|
u8 *data,
|
|
u32 count)
|
|
{
|
|
struct rsi_91x_sdiodev *dev =
|
|
(struct rsi_91x_sdiodev *)adapter->rsi_dev;
|
|
int status;
|
|
|
|
if (dev->write_fail > 1) {
|
|
rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__);
|
|
return 0;
|
|
} else if (dev->write_fail == 1) {
|
|
/**
|
|
* Assuming it is a CRC failure, we want to allow another
|
|
* card write
|
|
*/
|
|
rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__);
|
|
dev->write_fail++;
|
|
}
|
|
|
|
sdio_claim_host(dev->pfunction);
|
|
|
|
status = sdio_writesb(dev->pfunction, addr, data, count);
|
|
|
|
sdio_release_host(dev->pfunction);
|
|
|
|
if (status) {
|
|
rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n",
|
|
__func__, status);
|
|
dev->write_fail = 2;
|
|
} else {
|
|
memcpy(dev->prev_desc, data, FRAME_DESC_SZ);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* rsi_sdio_host_intf_write_pkt() - This function writes the packet to device.
|
|
* @adapter: Pointer to the adapter structure.
|
|
* @pkt: Pointer to the data to be written on to the device.
|
|
* @len: length of the data to be written on to the device.
|
|
*
|
|
* Return: 0 on success, -1 on failure.
|
|
*/
|
|
static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter,
|
|
u8 *pkt,
|
|
u32 len)
|
|
{
|
|
struct rsi_91x_sdiodev *dev =
|
|
(struct rsi_91x_sdiodev *)adapter->rsi_dev;
|
|
u32 block_size = dev->tx_blk_size;
|
|
u32 num_blocks, address, length;
|
|
u32 queueno;
|
|
int status;
|
|
|
|
queueno = ((pkt[1] >> 4) & 0xf);
|
|
|
|
num_blocks = len / block_size;
|
|
|
|
if (len % block_size)
|
|
num_blocks++;
|
|
|
|
address = (num_blocks * block_size | (queueno << 12));
|
|
length = num_blocks * block_size;
|
|
|
|
status = rsi_sdio_write_register_multiple(adapter,
|
|
address,
|
|
(u8 *)pkt,
|
|
length);
|
|
if (status)
|
|
rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n",
|
|
__func__, status);
|
|
rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* rsi_sdio_host_intf_read_pkt() - This function reads the packet
|
|
from the device.
|
|
* @adapter: Pointer to the adapter data structure.
|
|
* @pkt: Pointer to the packet data to be read from the the device.
|
|
* @length: Length of the data to be read from the device.
|
|
*
|
|
* Return: 0 on success, -1 on failure.
|
|
*/
|
|
int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter,
|
|
u8 *pkt,
|
|
u32 length)
|
|
{
|
|
int status = -EINVAL;
|
|
|
|
if (!length) {
|
|
rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__);
|
|
return status;
|
|
}
|
|
|
|
status = rsi_sdio_read_register_multiple(adapter,
|
|
length,
|
|
length, /*num of bytes*/
|
|
(u8 *)pkt);
|
|
|
|
if (status)
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__,
|
|
status);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* rsi_init_sdio_interface() - This function does init specific to SDIO.
|
|
*
|
|
* @adapter: Pointer to the adapter data structure.
|
|
* @pkt: Pointer to the packet data to be read from the the device.
|
|
*
|
|
* Return: 0 on success, -1 on failure.
|
|
*/
|
|
|
|
static int rsi_init_sdio_interface(struct rsi_hw *adapter,
|
|
struct sdio_func *pfunction)
|
|
{
|
|
struct rsi_91x_sdiodev *rsi_91x_dev;
|
|
int status = -ENOMEM;
|
|
|
|
rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL);
|
|
if (!rsi_91x_dev)
|
|
return status;
|
|
|
|
adapter->rsi_dev = rsi_91x_dev;
|
|
|
|
sdio_claim_host(pfunction);
|
|
|
|
pfunction->enable_timeout = 100;
|
|
status = sdio_enable_func(pfunction);
|
|
if (status) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__);
|
|
sdio_release_host(pfunction);
|
|
return status;
|
|
}
|
|
|
|
rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__);
|
|
|
|
rsi_91x_dev->pfunction = pfunction;
|
|
adapter->device = &pfunction->dev;
|
|
|
|
sdio_set_drvdata(pfunction, adapter);
|
|
|
|
status = rsi_setupcard(adapter);
|
|
if (status) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__);
|
|
goto fail;
|
|
}
|
|
|
|
rsi_dbg(INIT_ZONE, "%s: Setup card succesfully\n", __func__);
|
|
|
|
status = rsi_init_sdio_slave_regs(adapter);
|
|
if (status) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__);
|
|
goto fail;
|
|
}
|
|
sdio_release_host(pfunction);
|
|
|
|
adapter->host_intf_write_pkt = rsi_sdio_host_intf_write_pkt;
|
|
adapter->host_intf_read_pkt = rsi_sdio_host_intf_read_pkt;
|
|
adapter->determine_event_timeout = rsi_sdio_determine_event_timeout;
|
|
adapter->check_hw_queue_status = rsi_sdio_read_buffer_status_register;
|
|
|
|
#ifdef CONFIG_RSI_DEBUGFS
|
|
adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES;
|
|
#endif
|
|
return status;
|
|
fail:
|
|
sdio_disable_func(pfunction);
|
|
sdio_release_host(pfunction);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* rsi_probe() - This function is called by kernel when the driver provided
|
|
* Vendor and device IDs are matched. All the initialization
|
|
* work is done here.
|
|
* @pfunction: Pointer to the sdio_func structure.
|
|
* @id: Pointer to sdio_device_id structure.
|
|
*
|
|
* Return: 0 on success, 1 on failure.
|
|
*/
|
|
static int rsi_probe(struct sdio_func *pfunction,
|
|
const struct sdio_device_id *id)
|
|
{
|
|
struct rsi_hw *adapter;
|
|
|
|
rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__);
|
|
|
|
adapter = rsi_91x_init();
|
|
if (!adapter) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n",
|
|
__func__);
|
|
return 1;
|
|
}
|
|
|
|
if (rsi_init_sdio_interface(adapter, pfunction)) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n",
|
|
__func__);
|
|
goto fail;
|
|
}
|
|
|
|
if (rsi_sdio_device_init(adapter->priv)) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__);
|
|
sdio_claim_host(pfunction);
|
|
sdio_disable_func(pfunction);
|
|
sdio_release_host(pfunction);
|
|
goto fail;
|
|
}
|
|
|
|
sdio_claim_host(pfunction);
|
|
if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) {
|
|
rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__);
|
|
sdio_release_host(pfunction);
|
|
goto fail;
|
|
}
|
|
|
|
sdio_release_host(pfunction);
|
|
rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__);
|
|
|
|
return 0;
|
|
fail:
|
|
rsi_91x_deinit(adapter);
|
|
rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__);
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* rsi_disconnect() - This function performs the reverse of the probe function.
|
|
* @pfunction: Pointer to the sdio_func structure.
|
|
*
|
|
* Return: void.
|
|
*/
|
|
static void rsi_disconnect(struct sdio_func *pfunction)
|
|
{
|
|
struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
|
|
struct rsi_91x_sdiodev *dev;
|
|
|
|
if (!adapter)
|
|
return;
|
|
|
|
dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
|
|
|
|
dev->write_fail = 2;
|
|
rsi_mac80211_detach(adapter);
|
|
|
|
sdio_claim_host(pfunction);
|
|
sdio_release_irq(pfunction);
|
|
sdio_disable_func(pfunction);
|
|
rsi_91x_deinit(adapter);
|
|
/* Resetting to take care of the case, where-in driver is re-loaded */
|
|
rsi_reset_card(pfunction);
|
|
sdio_release_host(pfunction);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int rsi_suspend(struct device *dev)
|
|
{
|
|
/* Not yet implemented */
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static int rsi_resume(struct device *dev)
|
|
{
|
|
/* Not yet implemented */
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static const struct dev_pm_ops rsi_pm_ops = {
|
|
.suspend = rsi_suspend,
|
|
.resume = rsi_resume,
|
|
};
|
|
#endif
|
|
|
|
static const struct sdio_device_id rsi_dev_table[] = {
|
|
{ SDIO_DEVICE(0x303, 0x100) },
|
|
{ SDIO_DEVICE(0x041B, 0x0301) },
|
|
{ SDIO_DEVICE(0x041B, 0x0201) },
|
|
{ SDIO_DEVICE(0x041B, 0x9330) },
|
|
{ /* Blank */},
|
|
};
|
|
|
|
static struct sdio_driver rsi_driver = {
|
|
.name = "RSI-SDIO WLAN",
|
|
.probe = rsi_probe,
|
|
.remove = rsi_disconnect,
|
|
.id_table = rsi_dev_table,
|
|
#ifdef CONFIG_PM
|
|
.drv = {
|
|
.pm = &rsi_pm_ops,
|
|
}
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* rsi_module_init() - This function registers the sdio module.
|
|
* @void: Void.
|
|
*
|
|
* Return: 0 on success.
|
|
*/
|
|
static int rsi_module_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = sdio_register_driver(&rsi_driver);
|
|
rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* rsi_module_exit() - This function unregisters the sdio module.
|
|
* @void: Void.
|
|
*
|
|
* Return: None.
|
|
*/
|
|
static void rsi_module_exit(void)
|
|
{
|
|
sdio_unregister_driver(&rsi_driver);
|
|
rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__);
|
|
}
|
|
|
|
module_init(rsi_module_init);
|
|
module_exit(rsi_module_exit);
|
|
|
|
MODULE_AUTHOR("Redpine Signals Inc");
|
|
MODULE_DESCRIPTION("Common SDIO layer for RSI drivers");
|
|
MODULE_SUPPORTED_DEVICE("RSI-91x");
|
|
MODULE_DEVICE_TABLE(sdio, rsi_dev_table);
|
|
MODULE_FIRMWARE(FIRMWARE_RSI9113);
|
|
MODULE_VERSION("0.1");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|