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Date: Thu, 20 Jun 2024 17:08:36 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Kai-Heng Feng <kai.heng.feng@...onical.com>, Micky Ching <micky_ching@...lsil.com.cn>,
Wei WANG <wei_wang@...lsil.com.cn>, Rui Feng <rui_feng@...lsil.com.cn>
Cc: maximlevitsky@...il.com, oakad@...oo.com, linux-kernel@...r.kernel.org,
linux-mmc@...r.kernel.org
Subject: Re: [PATCH] memstick: rtsx_pci_ms: Remove Realtek PCI memstick driver
On Thu, 20 Jun 2024 at 05:12, Kai-Heng Feng <kai.heng.feng@...onical.com> wrote:
>
> Commit c0e5f4e73a71 ("misc: rtsx: Add support for RTS5261") silently
> removed RTSX_MS_CARD from its MFD cell, so rtsx_pci_ms isn't used
> by any driver anymore.
>
> Since there doesn't seem to any complaint, hence drop the driver.
>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
Not sure if anybody is using memstick at all these days, but who knows. :-)
Anyway, I have tried to loop in some of the driver authors. Let's
allow another week before we take the final decision on how to move
forward.
Kind regards
Uffe
> ---
> drivers/memstick/host/Kconfig | 10 -
> drivers/memstick/host/Makefile | 1 -
> drivers/memstick/host/rtsx_pci_ms.c | 638 ----------------------------
> 3 files changed, 649 deletions(-)
> delete mode 100644 drivers/memstick/host/rtsx_pci_ms.c
>
> diff --git a/drivers/memstick/host/Kconfig b/drivers/memstick/host/Kconfig
> index 4113343da056..fcd2c2cc3cb4 100644
> --- a/drivers/memstick/host/Kconfig
> +++ b/drivers/memstick/host/Kconfig
> @@ -44,16 +44,6 @@ config MEMSTICK_R592
> To compile this driver as a module, choose M here: the module will
> be called r592.
>
> -config MEMSTICK_REALTEK_PCI
> - tristate "Realtek PCI-E Memstick Card Interface Driver"
> - depends on MISC_RTSX_PCI
> - help
> - Say Y here to include driver code to support Memstick card interface
> - of Realtek PCI-E card reader
> -
> - To compile this driver as a module, choose M here: the module will
> - be called rtsx_pci_ms.
> -
> config MEMSTICK_REALTEK_USB
> tristate "Realtek USB Memstick Card Interface Driver"
> depends on MISC_RTSX_USB
> diff --git a/drivers/memstick/host/Makefile b/drivers/memstick/host/Makefile
> index 1abaa03ee68c..0c90df33165d 100644
> --- a/drivers/memstick/host/Makefile
> +++ b/drivers/memstick/host/Makefile
> @@ -6,5 +6,4 @@
> obj-$(CONFIG_MEMSTICK_TIFM_MS) += tifm_ms.o
> obj-$(CONFIG_MEMSTICK_JMICRON_38X) += jmb38x_ms.o
> obj-$(CONFIG_MEMSTICK_R592) += r592.o
> -obj-$(CONFIG_MEMSTICK_REALTEK_PCI) += rtsx_pci_ms.o
> obj-$(CONFIG_MEMSTICK_REALTEK_USB) += rtsx_usb_ms.o
> diff --git a/drivers/memstick/host/rtsx_pci_ms.c b/drivers/memstick/host/rtsx_pci_ms.c
> deleted file mode 100644
> index 980a54513e6c..000000000000
> --- a/drivers/memstick/host/rtsx_pci_ms.c
> +++ /dev/null
> @@ -1,638 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-or-later
> -/* Realtek PCI-Express Memstick Card Interface driver
> - *
> - * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
> - *
> - * Author:
> - * Wei WANG <wei_wang@...lsil.com.cn>
> - */
> -
> -#include <linux/module.h>
> -#include <linux/highmem.h>
> -#include <linux/delay.h>
> -#include <linux/platform_device.h>
> -#include <linux/memstick.h>
> -#include <linux/rtsx_pci.h>
> -#include <asm/unaligned.h>
> -
> -struct realtek_pci_ms {
> - struct platform_device *pdev;
> - struct rtsx_pcr *pcr;
> - struct memstick_host *msh;
> - struct memstick_request *req;
> -
> - struct mutex host_mutex;
> - struct work_struct handle_req;
> -
> - u8 ssc_depth;
> - unsigned int clock;
> - unsigned char ifmode;
> - bool eject;
> -};
> -
> -static inline struct device *ms_dev(struct realtek_pci_ms *host)
> -{
> - return &(host->pdev->dev);
> -}
> -
> -static inline void ms_clear_error(struct realtek_pci_ms *host)
> -{
> - rtsx_pci_write_register(host->pcr, CARD_STOP,
> - MS_STOP | MS_CLR_ERR, MS_STOP | MS_CLR_ERR);
> -}
> -
> -#ifdef DEBUG
> -
> -static void ms_print_debug_regs(struct realtek_pci_ms *host)
> -{
> - struct rtsx_pcr *pcr = host->pcr;
> - u16 i;
> - u8 *ptr;
> -
> - /* Print MS host internal registers */
> - rtsx_pci_init_cmd(pcr);
> - for (i = 0xFD40; i <= 0xFD44; i++)
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
> - for (i = 0xFD52; i <= 0xFD69; i++)
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0);
> - rtsx_pci_send_cmd(pcr, 100);
> -
> - ptr = rtsx_pci_get_cmd_data(pcr);
> - for (i = 0xFD40; i <= 0xFD44; i++)
> - dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
> - for (i = 0xFD52; i <= 0xFD69; i++)
> - dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++));
> -}
> -
> -#else
> -
> -#define ms_print_debug_regs(host)
> -
> -#endif
> -
> -static int ms_power_on(struct realtek_pci_ms *host)
> -{
> - struct rtsx_pcr *pcr = host->pcr;
> - int err;
> -
> - rtsx_pci_init_cmd(pcr);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, MS_MOD_SEL);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE,
> - CARD_SHARE_MASK, CARD_SHARE_48_MS);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN,
> - MS_CLK_EN, MS_CLK_EN);
> - err = rtsx_pci_send_cmd(pcr, 100);
> - if (err < 0)
> - return err;
> -
> - err = rtsx_pci_card_pull_ctl_enable(pcr, RTSX_MS_CARD);
> - if (err < 0)
> - return err;
> -
> - err = rtsx_pci_card_power_on(pcr, RTSX_MS_CARD);
> - if (err < 0)
> - return err;
> -
> - /* Wait ms power stable */
> - msleep(150);
> -
> - err = rtsx_pci_write_register(pcr, CARD_OE,
> - MS_OUTPUT_EN, MS_OUTPUT_EN);
> - if (err < 0)
> - return err;
> -
> - return 0;
> -}
> -
> -static int ms_power_off(struct realtek_pci_ms *host)
> -{
> - struct rtsx_pcr *pcr = host->pcr;
> - int err;
> -
> - rtsx_pci_init_cmd(pcr);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, MS_CLK_EN, 0);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE, MS_OUTPUT_EN, 0);
> -
> - err = rtsx_pci_send_cmd(pcr, 100);
> - if (err < 0)
> - return err;
> -
> - err = rtsx_pci_card_power_off(pcr, RTSX_MS_CARD);
> - if (err < 0)
> - return err;
> -
> - return rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD);
> -}
> -
> -static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir,
> - u8 tpc, u8 cfg, struct scatterlist *sg)
> -{
> - struct rtsx_pcr *pcr = host->pcr;
> - int err;
> - unsigned int length = sg->length;
> - u16 sec_cnt = (u16)(length / 512);
> - u8 val, trans_mode, dma_dir;
> - struct memstick_dev *card = host->msh->card;
> - bool pro_card = card->id.type == MEMSTICK_TYPE_PRO;
> -
> - dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n",
> - __func__, tpc, (data_dir == READ) ? "READ" : "WRITE",
> - length);
> -
> - if (data_dir == READ) {
> - dma_dir = DMA_DIR_FROM_CARD;
> - trans_mode = pro_card ? MS_TM_AUTO_READ : MS_TM_NORMAL_READ;
> - } else {
> - dma_dir = DMA_DIR_TO_CARD;
> - trans_mode = pro_card ? MS_TM_AUTO_WRITE : MS_TM_NORMAL_WRITE;
> - }
> -
> - rtsx_pci_init_cmd(pcr);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
> - if (pro_card) {
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_H,
> - 0xFF, (u8)(sec_cnt >> 8));
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_L,
> - 0xFF, (u8)sec_cnt);
> - }
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0,
> - DMA_DONE_INT, DMA_DONE_INT);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(length >> 24));
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(length >> 16));
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(length >> 8));
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)length);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL,
> - 0x03 | DMA_PACK_SIZE_MASK, dma_dir | DMA_EN | DMA_512);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
> - 0x01, RING_BUFFER);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER,
> - 0xFF, MS_TRANSFER_START | trans_mode);
> - rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER,
> - MS_TRANSFER_END, MS_TRANSFER_END);
> -
> - rtsx_pci_send_cmd_no_wait(pcr);
> -
> - err = rtsx_pci_transfer_data(pcr, sg, 1, data_dir == READ, 10000);
> - if (err < 0) {
> - ms_clear_error(host);
> - return err;
> - }
> -
> - rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val);
> - if (pro_card) {
> - if (val & (MS_INT_CMDNK | MS_INT_ERR |
> - MS_CRC16_ERR | MS_RDY_TIMEOUT))
> - return -EIO;
> - } else {
> - if (val & (MS_CRC16_ERR | MS_RDY_TIMEOUT))
> - return -EIO;
> - }
> -
> - return 0;
> -}
> -
> -static int ms_write_bytes(struct realtek_pci_ms *host, u8 tpc,
> - u8 cfg, u8 cnt, u8 *data, u8 *int_reg)
> -{
> - struct rtsx_pcr *pcr = host->pcr;
> - int err, i;
> -
> - dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc);
> -
> - if (!data)
> - return -EINVAL;
> -
> - rtsx_pci_init_cmd(pcr);
> -
> - for (i = 0; i < cnt; i++)
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
> - PPBUF_BASE2 + i, 0xFF, data[i]);
> - if (cnt % 2)
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
> - PPBUF_BASE2 + i, 0xFF, 0xFF);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
> - 0x01, PINGPONG_BUFFER);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER,
> - 0xFF, MS_TRANSFER_START | MS_TM_WRITE_BYTES);
> - rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER,
> - MS_TRANSFER_END, MS_TRANSFER_END);
> - if (int_reg)
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0);
> -
> - err = rtsx_pci_send_cmd(pcr, 5000);
> - if (err < 0) {
> - u8 val;
> -
> - rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val);
> - dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val);
> -
> - if (int_reg)
> - *int_reg = val & 0x0F;
> -
> - ms_print_debug_regs(host);
> -
> - ms_clear_error(host);
> -
> - if (!(tpc & 0x08)) {
> - if (val & MS_CRC16_ERR)
> - return -EIO;
> - } else {
> - if (!(val & 0x80)) {
> - if (val & (MS_INT_ERR | MS_INT_CMDNK))
> - return -EIO;
> - }
> - }
> -
> - return -ETIMEDOUT;
> - }
> -
> - if (int_reg) {
> - u8 *ptr = rtsx_pci_get_cmd_data(pcr) + 1;
> - *int_reg = *ptr & 0x0F;
> - }
> -
> - return 0;
> -}
> -
> -static int ms_read_bytes(struct realtek_pci_ms *host, u8 tpc,
> - u8 cfg, u8 cnt, u8 *data, u8 *int_reg)
> -{
> - struct rtsx_pcr *pcr = host->pcr;
> - int err, i;
> - u8 *ptr;
> -
> - dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc);
> -
> - if (!data)
> - return -EINVAL;
> -
> - rtsx_pci_init_cmd(pcr);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg);
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE,
> - 0x01, PINGPONG_BUFFER);
> -
> - rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER,
> - 0xFF, MS_TRANSFER_START | MS_TM_READ_BYTES);
> - rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER,
> - MS_TRANSFER_END, MS_TRANSFER_END);
> - for (i = 0; i < cnt - 1; i++)
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + i, 0, 0);
> - if (cnt % 2)
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + cnt, 0, 0);
> - else
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD,
> - PPBUF_BASE2 + cnt - 1, 0, 0);
> - if (int_reg)
> - rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0);
> -
> - err = rtsx_pci_send_cmd(pcr, 5000);
> - if (err < 0) {
> - u8 val;
> -
> - rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val);
> - dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val);
> -
> - if (int_reg)
> - *int_reg = val & 0x0F;
> -
> - ms_print_debug_regs(host);
> -
> - ms_clear_error(host);
> -
> - if (!(tpc & 0x08)) {
> - if (val & MS_CRC16_ERR)
> - return -EIO;
> - } else {
> - if (!(val & 0x80)) {
> - if (val & (MS_INT_ERR | MS_INT_CMDNK))
> - return -EIO;
> - }
> - }
> -
> - return -ETIMEDOUT;
> - }
> -
> - ptr = rtsx_pci_get_cmd_data(pcr) + 1;
> - for (i = 0; i < cnt; i++)
> - data[i] = *ptr++;
> -
> - if (int_reg)
> - *int_reg = *ptr & 0x0F;
> -
> - return 0;
> -}
> -
> -static int rtsx_pci_ms_issue_cmd(struct realtek_pci_ms *host)
> -{
> - struct memstick_request *req = host->req;
> - int err = 0;
> - u8 cfg = 0, int_reg;
> -
> - dev_dbg(ms_dev(host), "%s\n", __func__);
> -
> - if (req->need_card_int) {
> - if (host->ifmode != MEMSTICK_SERIAL)
> - cfg = WAIT_INT;
> - }
> -
> - if (req->long_data) {
> - err = ms_transfer_data(host, req->data_dir,
> - req->tpc, cfg, &(req->sg));
> - } else {
> - if (req->data_dir == READ) {
> - err = ms_read_bytes(host, req->tpc, cfg,
> - req->data_len, req->data, &int_reg);
> - } else {
> - err = ms_write_bytes(host, req->tpc, cfg,
> - req->data_len, req->data, &int_reg);
> - }
> - }
> - if (err < 0)
> - return err;
> -
> - if (req->need_card_int && (host->ifmode == MEMSTICK_SERIAL)) {
> - err = ms_read_bytes(host, MS_TPC_GET_INT,
> - NO_WAIT_INT, 1, &int_reg, NULL);
> - if (err < 0)
> - return err;
> - }
> -
> - if (req->need_card_int) {
> - dev_dbg(ms_dev(host), "int_reg: 0x%02x\n", int_reg);
> -
> - if (int_reg & MS_INT_CMDNK)
> - req->int_reg |= MEMSTICK_INT_CMDNAK;
> - if (int_reg & MS_INT_BREQ)
> - req->int_reg |= MEMSTICK_INT_BREQ;
> - if (int_reg & MS_INT_ERR)
> - req->int_reg |= MEMSTICK_INT_ERR;
> - if (int_reg & MS_INT_CED)
> - req->int_reg |= MEMSTICK_INT_CED;
> - }
> -
> - return 0;
> -}
> -
> -static void rtsx_pci_ms_handle_req(struct work_struct *work)
> -{
> - struct realtek_pci_ms *host = container_of(work,
> - struct realtek_pci_ms, handle_req);
> - struct rtsx_pcr *pcr = host->pcr;
> - struct memstick_host *msh = host->msh;
> - int rc;
> -
> - mutex_lock(&pcr->pcr_mutex);
> -
> - rtsx_pci_start_run(pcr);
> -
> - rtsx_pci_switch_clock(host->pcr, host->clock, host->ssc_depth,
> - false, true, false);
> - rtsx_pci_write_register(pcr, CARD_SELECT, 0x07, MS_MOD_SEL);
> - rtsx_pci_write_register(pcr, CARD_SHARE_MODE,
> - CARD_SHARE_MASK, CARD_SHARE_48_MS);
> -
> - if (!host->req) {
> - do {
> - rc = memstick_next_req(msh, &host->req);
> - dev_dbg(ms_dev(host), "next req %d\n", rc);
> -
> - if (!rc)
> - host->req->error = rtsx_pci_ms_issue_cmd(host);
> - } while (!rc);
> - }
> -
> - mutex_unlock(&pcr->pcr_mutex);
> -}
> -
> -static void rtsx_pci_ms_request(struct memstick_host *msh)
> -{
> - struct realtek_pci_ms *host = memstick_priv(msh);
> -
> - dev_dbg(ms_dev(host), "--> %s\n", __func__);
> -
> - if (rtsx_pci_card_exclusive_check(host->pcr, RTSX_MS_CARD))
> - return;
> -
> - schedule_work(&host->handle_req);
> -}
> -
> -static int rtsx_pci_ms_set_param(struct memstick_host *msh,
> - enum memstick_param param, int value)
> -{
> - struct realtek_pci_ms *host = memstick_priv(msh);
> - struct rtsx_pcr *pcr = host->pcr;
> - unsigned int clock = 0;
> - u8 ssc_depth = 0;
> - int err;
> -
> - dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n",
> - __func__, param, value);
> -
> - err = rtsx_pci_card_exclusive_check(host->pcr, RTSX_MS_CARD);
> - if (err)
> - return err;
> -
> - switch (param) {
> - case MEMSTICK_POWER:
> - if (value == MEMSTICK_POWER_ON)
> - err = ms_power_on(host);
> - else if (value == MEMSTICK_POWER_OFF)
> - err = ms_power_off(host);
> - else
> - return -EINVAL;
> - break;
> -
> - case MEMSTICK_INTERFACE:
> - if (value == MEMSTICK_SERIAL) {
> - clock = 19000000;
> - ssc_depth = RTSX_SSC_DEPTH_500K;
> -
> - err = rtsx_pci_write_register(pcr, MS_CFG, 0x58,
> - MS_BUS_WIDTH_1 | PUSH_TIME_DEFAULT);
> - if (err < 0)
> - return err;
> - } else if (value == MEMSTICK_PAR4) {
> - clock = 39000000;
> - ssc_depth = RTSX_SSC_DEPTH_1M;
> -
> - err = rtsx_pci_write_register(pcr, MS_CFG,
> - 0x58, MS_BUS_WIDTH_4 | PUSH_TIME_ODD);
> - if (err < 0)
> - return err;
> - } else {
> - return -EINVAL;
> - }
> -
> - err = rtsx_pci_switch_clock(pcr, clock,
> - ssc_depth, false, true, false);
> - if (err < 0)
> - return err;
> -
> - host->ssc_depth = ssc_depth;
> - host->clock = clock;
> - host->ifmode = value;
> - break;
> - }
> -
> - return 0;
> -}
> -
> -#ifdef CONFIG_PM
> -
> -static int rtsx_pci_ms_suspend(struct platform_device *pdev, pm_message_t state)
> -{
> - struct realtek_pci_ms *host = platform_get_drvdata(pdev);
> - struct memstick_host *msh = host->msh;
> -
> - dev_dbg(ms_dev(host), "--> %s\n", __func__);
> -
> - memstick_suspend_host(msh);
> - return 0;
> -}
> -
> -static int rtsx_pci_ms_resume(struct platform_device *pdev)
> -{
> - struct realtek_pci_ms *host = platform_get_drvdata(pdev);
> - struct memstick_host *msh = host->msh;
> -
> - dev_dbg(ms_dev(host), "--> %s\n", __func__);
> -
> - memstick_resume_host(msh);
> - return 0;
> -}
> -
> -#else /* CONFIG_PM */
> -
> -#define rtsx_pci_ms_suspend NULL
> -#define rtsx_pci_ms_resume NULL
> -
> -#endif /* CONFIG_PM */
> -
> -static void rtsx_pci_ms_card_event(struct platform_device *pdev)
> -{
> - struct realtek_pci_ms *host = platform_get_drvdata(pdev);
> -
> - memstick_detect_change(host->msh);
> -}
> -
> -static int rtsx_pci_ms_drv_probe(struct platform_device *pdev)
> -{
> - struct memstick_host *msh;
> - struct realtek_pci_ms *host;
> - struct rtsx_pcr *pcr;
> - struct pcr_handle *handle = pdev->dev.platform_data;
> - int rc;
> -
> - if (!handle)
> - return -ENXIO;
> -
> - pcr = handle->pcr;
> - if (!pcr)
> - return -ENXIO;
> -
> - dev_dbg(&(pdev->dev),
> - ": Realtek PCI-E Memstick controller found\n");
> -
> - msh = memstick_alloc_host(sizeof(*host), &pdev->dev);
> - if (!msh)
> - return -ENOMEM;
> -
> - host = memstick_priv(msh);
> - host->pcr = pcr;
> - host->msh = msh;
> - host->pdev = pdev;
> - platform_set_drvdata(pdev, host);
> - pcr->slots[RTSX_MS_CARD].p_dev = pdev;
> - pcr->slots[RTSX_MS_CARD].card_event = rtsx_pci_ms_card_event;
> -
> - mutex_init(&host->host_mutex);
> -
> - INIT_WORK(&host->handle_req, rtsx_pci_ms_handle_req);
> - msh->request = rtsx_pci_ms_request;
> - msh->set_param = rtsx_pci_ms_set_param;
> - msh->caps = MEMSTICK_CAP_PAR4;
> -
> - rc = memstick_add_host(msh);
> - if (rc) {
> - memstick_free_host(msh);
> - return rc;
> - }
> -
> - return 0;
> -}
> -
> -static void rtsx_pci_ms_drv_remove(struct platform_device *pdev)
> -{
> - struct realtek_pci_ms *host = platform_get_drvdata(pdev);
> - struct rtsx_pcr *pcr;
> - struct memstick_host *msh;
> - int rc;
> -
> - pcr = host->pcr;
> - pcr->slots[RTSX_MS_CARD].p_dev = NULL;
> - pcr->slots[RTSX_MS_CARD].card_event = NULL;
> - msh = host->msh;
> - host->eject = true;
> - cancel_work_sync(&host->handle_req);
> -
> - mutex_lock(&host->host_mutex);
> - if (host->req) {
> - dev_dbg(&(pdev->dev),
> - "%s: Controller removed during transfer\n",
> - dev_name(&msh->dev));
> -
> - rtsx_pci_complete_unfinished_transfer(pcr);
> -
> - host->req->error = -ENOMEDIUM;
> - do {
> - rc = memstick_next_req(msh, &host->req);
> - if (!rc)
> - host->req->error = -ENOMEDIUM;
> - } while (!rc);
> - }
> - mutex_unlock(&host->host_mutex);
> -
> - memstick_remove_host(msh);
> - memstick_free_host(msh);
> -
> - dev_dbg(&(pdev->dev),
> - ": Realtek PCI-E Memstick controller has been removed\n");
> -}
> -
> -static struct platform_device_id rtsx_pci_ms_ids[] = {
> - {
> - .name = DRV_NAME_RTSX_PCI_MS,
> - }, {
> - /* sentinel */
> - }
> -};
> -MODULE_DEVICE_TABLE(platform, rtsx_pci_ms_ids);
> -
> -static struct platform_driver rtsx_pci_ms_driver = {
> - .probe = rtsx_pci_ms_drv_probe,
> - .remove_new = rtsx_pci_ms_drv_remove,
> - .id_table = rtsx_pci_ms_ids,
> - .suspend = rtsx_pci_ms_suspend,
> - .resume = rtsx_pci_ms_resume,
> - .driver = {
> - .name = DRV_NAME_RTSX_PCI_MS,
> - },
> -};
> -module_platform_driver(rtsx_pci_ms_driver);
> -
> -MODULE_LICENSE("GPL");
> -MODULE_AUTHOR("Wei WANG <wei_wang@...lsil.com.cn>");
> -MODULE_DESCRIPTION("Realtek PCI-E Memstick Card Host Driver");
> --
> 2.43.0
>
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