| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Harald Welte | 5646 | 99.38% | 1 | 8.33% |
| Kees Cook | 14 | 0.25% | 1 | 8.33% |
| Ulf Hansson | 4 | 0.07% | 2 | 16.67% |
| Allen Pais | 4 | 0.07% | 1 | 8.33% |
| Sergei Shtylyov | 3 | 0.05% | 1 | 8.33% |
| Paul Gortmaker | 3 | 0.05% | 1 | 8.33% |
| Sachin Kamat | 2 | 0.04% | 1 | 8.33% |
| Thomas Gleixner | 2 | 0.04% | 1 | 8.33% |
| Martin K. Petersen | 1 | 0.02% | 1 | 8.33% |
| Girish K.S | 1 | 0.02% | 1 | 8.33% |
| Arvind Yadav | 1 | 0.02% | 1 | 8.33% |
| Total | 5681 | 12 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * drivers/mmc/host/via-sdmmc.c - VIA SD/MMC Card Reader driver * Copyright (c) 2008, VIA Technologies Inc. All Rights Reserved. */ #include <linux/pci.h> #include <linux/module.h> #include <linux/dma-mapping.h> #include <linux/highmem.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/mmc/host.h> #define DRV_NAME "via_sdmmc" #define PCI_DEVICE_ID_VIA_9530 0x9530 #define VIA_CRDR_SDC_OFF 0x200 #define VIA_CRDR_DDMA_OFF 0x400 #define VIA_CRDR_PCICTRL_OFF 0x600 #define VIA_CRDR_MIN_CLOCK 375000 #define VIA_CRDR_MAX_CLOCK 48000000 /* * PCI registers */ #define VIA_CRDR_PCI_WORK_MODE 0x40 #define VIA_CRDR_PCI_DBG_MODE 0x41 /* * SDC MMIO Registers */ #define VIA_CRDR_SDCTRL 0x0 #define VIA_CRDR_SDCTRL_START 0x01 #define VIA_CRDR_SDCTRL_WRITE 0x04 #define VIA_CRDR_SDCTRL_SINGLE_WR 0x10 #define VIA_CRDR_SDCTRL_SINGLE_RD 0x20 #define VIA_CRDR_SDCTRL_MULTI_WR 0x30 #define VIA_CRDR_SDCTRL_MULTI_RD 0x40 #define VIA_CRDR_SDCTRL_STOP 0x70 #define VIA_CRDR_SDCTRL_RSP_NONE 0x0 #define VIA_CRDR_SDCTRL_RSP_R1 0x10000 #define VIA_CRDR_SDCTRL_RSP_R2 0x20000 #define VIA_CRDR_SDCTRL_RSP_R3 0x30000 #define VIA_CRDR_SDCTRL_RSP_R1B 0x90000 #define VIA_CRDR_SDCARG 0x4 #define VIA_CRDR_SDBUSMODE 0x8 #define VIA_CRDR_SDMODE_4BIT 0x02 #define VIA_CRDR_SDMODE_CLK_ON 0x40 #define VIA_CRDR_SDBLKLEN 0xc /* * Bit 0 -Bit 10 : Block length. So, the maximum block length should be 2048. * Bit 11 - Bit 13 : Reserved. * GPIDET : Select GPI pin to detect card, GPI means CR_CD# in top design. * INTEN : Enable SD host interrupt. * Bit 16 - Bit 31 : Block count. So, the maximun block count should be 65536. */ #define VIA_CRDR_SDBLKLEN_GPIDET 0x2000 #define VIA_CRDR_SDBLKLEN_INTEN 0x8000 #define VIA_CRDR_MAX_BLOCK_COUNT 65536 #define VIA_CRDR_MAX_BLOCK_LENGTH 2048 #define VIA_CRDR_SDRESP0 0x10 #define VIA_CRDR_SDRESP1 0x14 #define VIA_CRDR_SDRESP2 0x18 #define VIA_CRDR_SDRESP3 0x1c #define VIA_CRDR_SDCURBLKCNT 0x20 #define VIA_CRDR_SDINTMASK 0x24 /* * MBDIE : Multiple Blocks transfer Done Interrupt Enable * BDDIE : Block Data transfer Done Interrupt Enable * CIRIE : Card Insertion or Removal Interrupt Enable * CRDIE : Command-Response transfer Done Interrupt Enable * CRTOIE : Command-Response response TimeOut Interrupt Enable * ASCRDIE : Auto Stop Command-Response transfer Done Interrupt Enable * DTIE : Data access Timeout Interrupt Enable * SCIE : reSponse CRC error Interrupt Enable * RCIE : Read data CRC error Interrupt Enable * WCIE : Write data CRC error Interrupt Enable */ #define VIA_CRDR_SDINTMASK_MBDIE 0x10 #define VIA_CRDR_SDINTMASK_BDDIE 0x20 #define VIA_CRDR_SDINTMASK_CIRIE 0x80 #define VIA_CRDR_SDINTMASK_CRDIE 0x200 #define VIA_CRDR_SDINTMASK_CRTOIE 0x400 #define VIA_CRDR_SDINTMASK_ASCRDIE 0x800 #define VIA_CRDR_SDINTMASK_DTIE 0x1000 #define VIA_CRDR_SDINTMASK_SCIE 0x2000 #define VIA_CRDR_SDINTMASK_RCIE 0x4000 #define VIA_CRDR_SDINTMASK_WCIE 0x8000 #define VIA_CRDR_SDACTIVE_INTMASK \ (VIA_CRDR_SDINTMASK_MBDIE | VIA_CRDR_SDINTMASK_CIRIE \ | VIA_CRDR_SDINTMASK_CRDIE | VIA_CRDR_SDINTMASK_CRTOIE \ | VIA_CRDR_SDINTMASK_DTIE | VIA_CRDR_SDINTMASK_SCIE \ | VIA_CRDR_SDINTMASK_RCIE | VIA_CRDR_SDINTMASK_WCIE) #define VIA_CRDR_SDSTATUS 0x28 /* * CECC : Reserved * WP : SD card Write Protect status * SLOTD : Reserved * SLOTG : SD SLOT status(Gpi pin status) * MBD : Multiple Blocks transfer Done interrupt status * BDD : Block Data transfer Done interrupt status * CD : Reserved * CIR : Card Insertion or Removal interrupt detected on GPI pin * IO : Reserved * CRD : Command-Response transfer Done interrupt status * CRTO : Command-Response response TimeOut interrupt status * ASCRDIE : Auto Stop Command-Response transfer Done interrupt status * DT : Data access Timeout interrupt status * SC : reSponse CRC error interrupt status * RC : Read data CRC error interrupt status * WC : Write data CRC error interrupt status */ #define VIA_CRDR_SDSTS_CECC 0x01 #define VIA_CRDR_SDSTS_WP 0x02 #define VIA_CRDR_SDSTS_SLOTD 0x04 #define VIA_CRDR_SDSTS_SLOTG 0x08 #define VIA_CRDR_SDSTS_MBD 0x10 #define VIA_CRDR_SDSTS_BDD 0x20 #define VIA_CRDR_SDSTS_CD 0x40 #define VIA_CRDR_SDSTS_CIR 0x80 #define VIA_CRDR_SDSTS_IO 0x100 #define VIA_CRDR_SDSTS_CRD 0x200 #define VIA_CRDR_SDSTS_CRTO 0x400 #define VIA_CRDR_SDSTS_ASCRDIE 0x800 #define VIA_CRDR_SDSTS_DT 0x1000 #define VIA_CRDR_SDSTS_SC 0x2000 #define VIA_CRDR_SDSTS_RC 0x4000 #define VIA_CRDR_SDSTS_WC 0x8000 #define VIA_CRDR_SDSTS_IGN_MASK\ (VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_IO) #define VIA_CRDR_SDSTS_INT_MASK \ (VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_CD \ | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_IO | VIA_CRDR_SDSTS_CRD \ | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \ | VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC) #define VIA_CRDR_SDSTS_W1C_MASK \ (VIA_CRDR_SDSTS_CECC | VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD \ | VIA_CRDR_SDSTS_CD | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_CRD \ | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \ | VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC) #define VIA_CRDR_SDSTS_CMD_MASK \ (VIA_CRDR_SDSTS_CRD | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_SC) #define VIA_CRDR_SDSTS_DATA_MASK\ (VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_DT \ | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC) #define VIA_CRDR_SDSTATUS2 0x2a /* * CFE : Enable SD host automatic Clock FReezing */ #define VIA_CRDR_SDSTS_CFE 0x80 #define VIA_CRDR_SDRSPTMO 0x2C #define VIA_CRDR_SDCLKSEL 0x30 #define VIA_CRDR_SDEXTCTRL 0x34 #define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SD 0x01 #define VIS_CRDR_SDEXTCTRL_SHIFT_9 0x02 #define VIS_CRDR_SDEXTCTRL_MMC_8BIT 0x04 #define VIS_CRDR_SDEXTCTRL_RELD_BLK 0x08 #define VIS_CRDR_SDEXTCTRL_BAD_CMDA 0x10 #define VIS_CRDR_SDEXTCTRL_BAD_DATA 0x20 #define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SPI 0x40 #define VIA_CRDR_SDEXTCTRL_HISPD 0x80 /* 0x38-0xFF reserved */ /* * Data DMA Control Registers */ #define VIA_CRDR_DMABASEADD 0x0 #define VIA_CRDR_DMACOUNTER 0x4 #define VIA_CRDR_DMACTRL 0x8 /* * DIR :Transaction Direction * 0 : From card to memory * 1 : From memory to card */ #define VIA_CRDR_DMACTRL_DIR 0x100 #define VIA_CRDR_DMACTRL_ENIRQ 0x10000 #define VIA_CRDR_DMACTRL_SFTRST 0x1000000 #define VIA_CRDR_DMASTS 0xc #define VIA_CRDR_DMASTART 0x10 /*0x14-0xFF reserved*/ /* * PCI Control Registers */ /*0x0 - 0x1 reserved*/ #define VIA_CRDR_PCICLKGATT 0x2 /* * SFTRST : * 0 : Soft reset all the controller and it will be de-asserted automatically * 1 : Soft reset is de-asserted */ #define VIA_CRDR_PCICLKGATT_SFTRST 0x01 /* * 3V3 : Pad power select * 0 : 1.8V * 1 : 3.3V * NOTE : No mater what the actual value should be, this bit always * read as 0. This is a hardware bug. */ #define VIA_CRDR_PCICLKGATT_3V3 0x10 /* * PAD_PWRON : Pad Power on/off select * 0 : Power off * 1 : Power on * NOTE : No mater what the actual value should be, this bit always * read as 0. This is a hardware bug. */ #define VIA_CRDR_PCICLKGATT_PAD_PWRON 0x20 #define VIA_CRDR_PCISDCCLK 0x5 #define VIA_CRDR_PCIDMACLK 0x7 #define VIA_CRDR_PCIDMACLK_SDC 0x2 #define VIA_CRDR_PCIINTCTRL 0x8 #define VIA_CRDR_PCIINTCTRL_SDCIRQEN 0x04 #define VIA_CRDR_PCIINTSTATUS 0x9 #define VIA_CRDR_PCIINTSTATUS_SDC 0x04 #define VIA_CRDR_PCITMOCTRL 0xa #define VIA_CRDR_PCITMOCTRL_NO 0x0 #define VIA_CRDR_PCITMOCTRL_32US 0x1 #define VIA_CRDR_PCITMOCTRL_256US 0x2 #define VIA_CRDR_PCITMOCTRL_1024US 0x3 #define VIA_CRDR_PCITMOCTRL_256MS 0x4 #define VIA_CRDR_PCITMOCTRL_512MS 0x5 #define VIA_CRDR_PCITMOCTRL_1024MS 0x6 /*0xB-0xFF reserved*/ enum PCI_HOST_CLK_CONTROL { PCI_CLK_375K = 0x03, PCI_CLK_8M = 0x04, PCI_CLK_12M = 0x00, PCI_CLK_16M = 0x05, PCI_CLK_24M = 0x01, PCI_CLK_33M = 0x06, PCI_CLK_48M = 0x02 }; struct sdhcreg { u32 sdcontrol_reg; u32 sdcmdarg_reg; u32 sdbusmode_reg; u32 sdblklen_reg; u32 sdresp_reg[4]; u32 sdcurblkcnt_reg; u32 sdintmask_reg; u32 sdstatus_reg; u32 sdrsptmo_reg; u32 sdclksel_reg; u32 sdextctrl_reg; }; struct pcictrlreg { u8 reserve[2]; u8 pciclkgat_reg; u8 pcinfcclk_reg; u8 pcimscclk_reg; u8 pcisdclk_reg; u8 pcicaclk_reg; u8 pcidmaclk_reg; u8 pciintctrl_reg; u8 pciintstatus_reg; u8 pcitmoctrl_reg; u8 Resv; }; struct via_crdr_mmc_host { struct mmc_host *mmc; struct mmc_request *mrq; struct mmc_command *cmd; struct mmc_data *data; void __iomem *mmiobase; void __iomem *sdhc_mmiobase; void __iomem *ddma_mmiobase; void __iomem *pcictrl_mmiobase; struct pcictrlreg pm_pcictrl_reg; struct sdhcreg pm_sdhc_reg; struct work_struct carddet_work; struct tasklet_struct finish_tasklet; struct timer_list timer; spinlock_t lock; u8 power; int reject; unsigned int quirks; }; /* some devices need a very long delay for power to stabilize */ #define VIA_CRDR_QUIRK_300MS_PWRDELAY 0x0001 static const struct pci_device_id via_ids[] = { {PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_9530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0,}, {0,} }; MODULE_DEVICE_TABLE(pci, via_ids); static void via_print_sdchc(struct via_crdr_mmc_host *host) { void __iomem *addrbase = host->sdhc_mmiobase; pr_debug("SDC MMIO Registers:\n"); pr_debug("SDCONTROL=%08x, SDCMDARG=%08x, SDBUSMODE=%08x\n", readl(addrbase + VIA_CRDR_SDCTRL), readl(addrbase + VIA_CRDR_SDCARG), readl(addrbase + VIA_CRDR_SDBUSMODE)); pr_debug("SDBLKLEN=%08x, SDCURBLKCNT=%08x, SDINTMASK=%08x\n", readl(addrbase + VIA_CRDR_SDBLKLEN), readl(addrbase + VIA_CRDR_SDCURBLKCNT), readl(addrbase + VIA_CRDR_SDINTMASK)); pr_debug("SDSTATUS=%08x, SDCLKSEL=%08x, SDEXTCTRL=%08x\n", readl(addrbase + VIA_CRDR_SDSTATUS), readl(addrbase + VIA_CRDR_SDCLKSEL), readl(addrbase + VIA_CRDR_SDEXTCTRL)); } static void via_print_pcictrl(struct via_crdr_mmc_host *host) { void __iomem *addrbase = host->pcictrl_mmiobase; pr_debug("PCI Control Registers:\n"); pr_debug("PCICLKGATT=%02x, PCISDCCLK=%02x, PCIDMACLK=%02x\n", readb(addrbase + VIA_CRDR_PCICLKGATT), readb(addrbase + VIA_CRDR_PCISDCCLK), readb(addrbase + VIA_CRDR_PCIDMACLK)); pr_debug("PCIINTCTRL=%02x, PCIINTSTATUS=%02x\n", readb(addrbase + VIA_CRDR_PCIINTCTRL), readb(addrbase + VIA_CRDR_PCIINTSTATUS)); } static void via_save_pcictrlreg(struct via_crdr_mmc_host *host) { struct pcictrlreg *pm_pcictrl_reg; void __iomem *addrbase; pm_pcictrl_reg = &(host->pm_pcictrl_reg); addrbase = host->pcictrl_mmiobase; pm_pcictrl_reg->pciclkgat_reg = readb(addrbase + VIA_CRDR_PCICLKGATT); pm_pcictrl_reg->pciclkgat_reg |= VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON; pm_pcictrl_reg->pcisdclk_reg = readb(addrbase + VIA_CRDR_PCISDCCLK); pm_pcictrl_reg->pcidmaclk_reg = readb(addrbase + VIA_CRDR_PCIDMACLK); pm_pcictrl_reg->pciintctrl_reg = readb(addrbase + VIA_CRDR_PCIINTCTRL); pm_pcictrl_reg->pciintstatus_reg = readb(addrbase + VIA_CRDR_PCIINTSTATUS); pm_pcictrl_reg->pcitmoctrl_reg = readb(addrbase + VIA_CRDR_PCITMOCTRL); } static void via_restore_pcictrlreg(struct via_crdr_mmc_host *host) { struct pcictrlreg *pm_pcictrl_reg; void __iomem *addrbase; pm_pcictrl_reg = &(host->pm_pcictrl_reg); addrbase = host->pcictrl_mmiobase; writeb(pm_pcictrl_reg->pciclkgat_reg, addrbase + VIA_CRDR_PCICLKGATT); writeb(pm_pcictrl_reg->pcisdclk_reg, addrbase + VIA_CRDR_PCISDCCLK); writeb(pm_pcictrl_reg->pcidmaclk_reg, addrbase + VIA_CRDR_PCIDMACLK); writeb(pm_pcictrl_reg->pciintctrl_reg, addrbase + VIA_CRDR_PCIINTCTRL); writeb(pm_pcictrl_reg->pciintstatus_reg, addrbase + VIA_CRDR_PCIINTSTATUS); writeb(pm_pcictrl_reg->pcitmoctrl_reg, addrbase + VIA_CRDR_PCITMOCTRL); } static void via_save_sdcreg(struct via_crdr_mmc_host *host) { struct sdhcreg *pm_sdhc_reg; void __iomem *addrbase; pm_sdhc_reg = &(host->pm_sdhc_reg); addrbase = host->sdhc_mmiobase; pm_sdhc_reg->sdcontrol_reg = readl(addrbase + VIA_CRDR_SDCTRL); pm_sdhc_reg->sdcmdarg_reg = readl(addrbase + VIA_CRDR_SDCARG); pm_sdhc_reg->sdbusmode_reg = readl(addrbase + VIA_CRDR_SDBUSMODE); pm_sdhc_reg->sdblklen_reg = readl(addrbase + VIA_CRDR_SDBLKLEN); pm_sdhc_reg->sdcurblkcnt_reg = readl(addrbase + VIA_CRDR_SDCURBLKCNT); pm_sdhc_reg->sdintmask_reg = readl(addrbase + VIA_CRDR_SDINTMASK); pm_sdhc_reg->sdstatus_reg = readl(addrbase + VIA_CRDR_SDSTATUS); pm_sdhc_reg->sdrsptmo_reg = readl(addrbase + VIA_CRDR_SDRSPTMO); pm_sdhc_reg->sdclksel_reg = readl(addrbase + VIA_CRDR_SDCLKSEL); pm_sdhc_reg->sdextctrl_reg = readl(addrbase + VIA_CRDR_SDEXTCTRL); } static void via_restore_sdcreg(struct via_crdr_mmc_host *host) { struct sdhcreg *pm_sdhc_reg; void __iomem *addrbase; pm_sdhc_reg = &(host->pm_sdhc_reg); addrbase = host->sdhc_mmiobase; writel(pm_sdhc_reg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL); writel(pm_sdhc_reg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG); writel(pm_sdhc_reg->sdbusmode_reg, addrbase + VIA_CRDR_SDBUSMODE); writel(pm_sdhc_reg->sdblklen_reg, addrbase + VIA_CRDR_SDBLKLEN); writel(pm_sdhc_reg->sdcurblkcnt_reg, addrbase + VIA_CRDR_SDCURBLKCNT); writel(pm_sdhc_reg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK); writel(pm_sdhc_reg->sdstatus_reg, addrbase + VIA_CRDR_SDSTATUS); writel(pm_sdhc_reg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO); writel(pm_sdhc_reg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL); writel(pm_sdhc_reg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL); } static void via_pwron_sleep(struct via_crdr_mmc_host *sdhost) { if (sdhost->quirks & VIA_CRDR_QUIRK_300MS_PWRDELAY) msleep(300); else msleep(3); } static void via_set_ddma(struct via_crdr_mmc_host *host, dma_addr_t dmaaddr, u32 count, int dir, int enirq) { void __iomem *addrbase; u32 ctrl_data = 0; if (enirq) ctrl_data |= VIA_CRDR_DMACTRL_ENIRQ; if (dir) ctrl_data |= VIA_CRDR_DMACTRL_DIR; addrbase = host->ddma_mmiobase; writel(dmaaddr, addrbase + VIA_CRDR_DMABASEADD); writel(count, addrbase + VIA_CRDR_DMACOUNTER); writel(ctrl_data, addrbase + VIA_CRDR_DMACTRL); writel(0x01, addrbase + VIA_CRDR_DMASTART); /* It seems that our DMA can not work normally with 375kHz clock */ /* FIXME: don't brute-force 8MHz but use PIO at 375kHz !! */ addrbase = host->pcictrl_mmiobase; if (readb(addrbase + VIA_CRDR_PCISDCCLK) == PCI_CLK_375K) { dev_info(host->mmc->parent, "forcing card speed to 8MHz\n"); writeb(PCI_CLK_8M, addrbase + VIA_CRDR_PCISDCCLK); } } static void via_sdc_preparedata(struct via_crdr_mmc_host *host, struct mmc_data *data) { void __iomem *addrbase; u32 blk_reg; int count; WARN_ON(host->data); /* Sanity checks */ BUG_ON(data->blksz > host->mmc->max_blk_size); BUG_ON(data->blocks > host->mmc->max_blk_count); host->data = data; count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, ((data->flags & MMC_DATA_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE)); BUG_ON(count != 1); via_set_ddma(host, sg_dma_address(data->sg), sg_dma_len(data->sg), (data->flags & MMC_DATA_WRITE) ? 1 : 0, 1); addrbase = host->sdhc_mmiobase; blk_reg = data->blksz - 1; blk_reg |= VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN; blk_reg |= (data->blocks) << 16; writel(blk_reg, addrbase + VIA_CRDR_SDBLKLEN); } static void via_sdc_get_response(struct via_crdr_mmc_host *host, struct mmc_command *cmd) { void __iomem *addrbase = host->sdhc_mmiobase; u32 dwdata0 = readl(addrbase + VIA_CRDR_SDRESP0); u32 dwdata1 = readl(addrbase + VIA_CRDR_SDRESP1); u32 dwdata2 = readl(addrbase + VIA_CRDR_SDRESP2); u32 dwdata3 = readl(addrbase + VIA_CRDR_SDRESP3); if (cmd->flags & MMC_RSP_136) { cmd->resp[0] = ((u8) (dwdata1)) | (((u8) (dwdata0 >> 24)) << 8) | (((u8) (dwdata0 >> 16)) << 16) | (((u8) (dwdata0 >> 8)) << 24); cmd->resp[1] = ((u8) (dwdata2)) | (((u8) (dwdata1 >> 24)) << 8) | (((u8) (dwdata1 >> 16)) << 16) | (((u8) (dwdata1 >> 8)) << 24); cmd->resp[2] = ((u8) (dwdata3)) | (((u8) (dwdata2 >> 24)) << 8) | (((u8) (dwdata2 >> 16)) << 16) | (((u8) (dwdata2 >> 8)) << 24); cmd->resp[3] = 0xff | ((((u8) (dwdata3 >> 24))) << 8) | (((u8) (dwdata3 >> 16)) << 16) | (((u8) (dwdata3 >> 8)) << 24); } else { dwdata0 >>= 8; cmd->resp[0] = ((dwdata0 & 0xff) << 24) | (((dwdata0 >> 8) & 0xff) << 16) | (((dwdata0 >> 16) & 0xff) << 8) | (dwdata1 & 0xff); dwdata1 >>= 8; cmd->resp[1] = ((dwdata1 & 0xff) << 24) | (((dwdata1 >> 8) & 0xff) << 16) | (((dwdata1 >> 16) & 0xff) << 8); } } static void via_sdc_send_command(struct via_crdr_mmc_host *host, struct mmc_command *cmd) { void __iomem *addrbase; struct mmc_data *data; u32 cmdctrl = 0; WARN_ON(host->cmd); data = cmd->data; mod_timer(&host->timer, jiffies + HZ); host->cmd = cmd; /*Command index*/ cmdctrl = cmd->opcode << 8; /*Response type*/ switch (mmc_resp_type(cmd)) { case MMC_RSP_NONE: cmdctrl |= VIA_CRDR_SDCTRL_RSP_NONE; break; case MMC_RSP_R1: cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1; break; case MMC_RSP_R1B: cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1B; break; case MMC_RSP_R2: cmdctrl |= VIA_CRDR_SDCTRL_RSP_R2; break; case MMC_RSP_R3: cmdctrl |= VIA_CRDR_SDCTRL_RSP_R3; break; default: pr_err("%s: cmd->flag is not valid\n", mmc_hostname(host->mmc)); break; } if (!(cmd->data)) goto nodata; via_sdc_preparedata(host, data); /*Command control*/ if (data->blocks > 1) { if (data->flags & MMC_DATA_WRITE) { cmdctrl |= VIA_CRDR_SDCTRL_WRITE; cmdctrl |= VIA_CRDR_SDCTRL_MULTI_WR; } else { cmdctrl |= VIA_CRDR_SDCTRL_MULTI_RD; } } else { if (data->flags & MMC_DATA_WRITE) { cmdctrl |= VIA_CRDR_SDCTRL_WRITE; cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_WR; } else { cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_RD; } } nodata: if (cmd == host->mrq->stop) cmdctrl |= VIA_CRDR_SDCTRL_STOP; cmdctrl |= VIA_CRDR_SDCTRL_START; addrbase = host->sdhc_mmiobase; writel(cmd->arg, addrbase + VIA_CRDR_SDCARG); writel(cmdctrl, addrbase + VIA_CRDR_SDCTRL); } static void via_sdc_finish_data(struct via_crdr_mmc_host *host) { struct mmc_data *data; BUG_ON(!host->data); data = host->data; host->data = NULL; if (data->error) data->bytes_xfered = 0; else data->bytes_xfered = data->blocks * data->blksz; dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, ((data->flags & MMC_DATA_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE)); if (data->stop) via_sdc_send_command(host, data->stop); else tasklet_schedule(&host->finish_tasklet); } static void via_sdc_finish_command(struct via_crdr_mmc_host *host) { via_sdc_get_response(host, host->cmd); host->cmd->error = 0; if (!host->cmd->data) tasklet_schedule(&host->finish_tasklet); host->cmd = NULL; } static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq) { void __iomem *addrbase; struct via_crdr_mmc_host *host; unsigned long flags; u16 status; host = mmc_priv(mmc); spin_lock_irqsave(&host->lock, flags); addrbase = host->pcictrl_mmiobase; writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK); status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); status &= VIA_CRDR_SDSTS_W1C_MASK; writew(status, host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); WARN_ON(host->mrq != NULL); host->mrq = mrq; status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) { host->mrq->cmd->error = -ENOMEDIUM; tasklet_schedule(&host->finish_tasklet); } else { via_sdc_send_command(host, mrq->cmd); } spin_unlock_irqrestore(&host->lock, flags); } static void via_sdc_set_power(struct via_crdr_mmc_host *host, unsigned short power, unsigned int on) { unsigned long flags; u8 gatt; spin_lock_irqsave(&host->lock, flags); host->power = (1 << power); gatt = readb(host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); if (host->power == MMC_VDD_165_195) gatt &= ~VIA_CRDR_PCICLKGATT_3V3; else gatt |= VIA_CRDR_PCICLKGATT_3V3; if (on) gatt |= VIA_CRDR_PCICLKGATT_PAD_PWRON; else gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON; writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); spin_unlock_irqrestore(&host->lock, flags); via_pwron_sleep(host); } static void via_sdc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct via_crdr_mmc_host *host; unsigned long flags; void __iomem *addrbase; u32 org_data, sdextctrl; u8 clock; host = mmc_priv(mmc); spin_lock_irqsave(&host->lock, flags); addrbase = host->sdhc_mmiobase; org_data = readl(addrbase + VIA_CRDR_SDBUSMODE); sdextctrl = readl(addrbase + VIA_CRDR_SDEXTCTRL); if (ios->bus_width == MMC_BUS_WIDTH_1) org_data &= ~VIA_CRDR_SDMODE_4BIT; else org_data |= VIA_CRDR_SDMODE_4BIT; if (ios->power_mode == MMC_POWER_OFF) org_data &= ~VIA_CRDR_SDMODE_CLK_ON; else org_data |= VIA_CRDR_SDMODE_CLK_ON; if (ios->timing == MMC_TIMING_SD_HS) sdextctrl |= VIA_CRDR_SDEXTCTRL_HISPD; else sdextctrl &= ~VIA_CRDR_SDEXTCTRL_HISPD; writel(org_data, addrbase + VIA_CRDR_SDBUSMODE); writel(sdextctrl, addrbase + VIA_CRDR_SDEXTCTRL); if (ios->clock >= 48000000) clock = PCI_CLK_48M; else if (ios->clock >= 33000000) clock = PCI_CLK_33M; else if (ios->clock >= 24000000) clock = PCI_CLK_24M; else if (ios->clock >= 16000000) clock = PCI_CLK_16M; else if (ios->clock >= 12000000) clock = PCI_CLK_12M; else if (ios->clock >= 8000000) clock = PCI_CLK_8M; else clock = PCI_CLK_375K; addrbase = host->pcictrl_mmiobase; if (readb(addrbase + VIA_CRDR_PCISDCCLK) != clock) writeb(clock, addrbase + VIA_CRDR_PCISDCCLK); spin_unlock_irqrestore(&host->lock, flags); if (ios->power_mode != MMC_POWER_OFF) via_sdc_set_power(host, ios->vdd, 1); else via_sdc_set_power(host, ios->vdd, 0); } static int via_sdc_get_ro(struct mmc_host *mmc) { struct via_crdr_mmc_host *host; unsigned long flags; u16 status; host = mmc_priv(mmc); spin_lock_irqsave(&host->lock, flags); status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); spin_unlock_irqrestore(&host->lock, flags); return !(status & VIA_CRDR_SDSTS_WP); } static const struct mmc_host_ops via_sdc_ops = { .request = via_sdc_request, .set_ios = via_sdc_set_ios, .get_ro = via_sdc_get_ro, }; static void via_reset_pcictrl(struct via_crdr_mmc_host *host) { unsigned long flags; u8 gatt; spin_lock_irqsave(&host->lock, flags); via_save_pcictrlreg(host); via_save_sdcreg(host); spin_unlock_irqrestore(&host->lock, flags); gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON; if (host->power == MMC_VDD_165_195) gatt &= VIA_CRDR_PCICLKGATT_3V3; else gatt |= VIA_CRDR_PCICLKGATT_3V3; writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); via_pwron_sleep(host); gatt |= VIA_CRDR_PCICLKGATT_SFTRST; writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); msleep(3); spin_lock_irqsave(&host->lock, flags); via_restore_pcictrlreg(host); via_restore_sdcreg(host); spin_unlock_irqrestore(&host->lock, flags); } static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask) { BUG_ON(intmask == 0); if (!host->cmd) { pr_err("%s: Got command interrupt 0x%x even " "though no command operation was in progress.\n", mmc_hostname(host->mmc), intmask); return; } if (intmask & VIA_CRDR_SDSTS_CRTO) host->cmd->error = -ETIMEDOUT; else if (intmask & VIA_CRDR_SDSTS_SC) host->cmd->error = -EILSEQ; if (host->cmd->error) tasklet_schedule(&host->finish_tasklet); else if (intmask & VIA_CRDR_SDSTS_CRD) via_sdc_finish_command(host); } static void via_sdc_data_isr(struct via_crdr_mmc_host *host, u16 intmask) { BUG_ON(intmask == 0); if (intmask & VIA_CRDR_SDSTS_DT) host->data->error = -ETIMEDOUT; else if (intmask & (VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)) host->data->error = -EILSEQ; via_sdc_finish_data(host); } static irqreturn_t via_sdc_isr(int irq, void *dev_id) { struct via_crdr_mmc_host *sdhost = dev_id; void __iomem *addrbase; u8 pci_status; u16 sd_status; irqreturn_t result; if (!sdhost) return IRQ_NONE; spin_lock(&sdhost->lock); addrbase = sdhost->pcictrl_mmiobase; pci_status = readb(addrbase + VIA_CRDR_PCIINTSTATUS); if (!(pci_status & VIA_CRDR_PCIINTSTATUS_SDC)) { result = IRQ_NONE; goto out; } addrbase = sdhost->sdhc_mmiobase; sd_status = readw(addrbase + VIA_CRDR_SDSTATUS); sd_status &= VIA_CRDR_SDSTS_INT_MASK; sd_status &= ~VIA_CRDR_SDSTS_IGN_MASK; if (!sd_status) { result = IRQ_NONE; goto out; } if (sd_status & VIA_CRDR_SDSTS_CIR) { writew(sd_status & VIA_CRDR_SDSTS_CIR, addrbase + VIA_CRDR_SDSTATUS); schedule_work(&sdhost->carddet_work); } sd_status &= ~VIA_CRDR_SDSTS_CIR; if (sd_status & VIA_CRDR_SDSTS_CMD_MASK) { writew(sd_status & VIA_CRDR_SDSTS_CMD_MASK, addrbase + VIA_CRDR_SDSTATUS); via_sdc_cmd_isr(sdhost, sd_status & VIA_CRDR_SDSTS_CMD_MASK); } if (sd_status & VIA_CRDR_SDSTS_DATA_MASK) { writew(sd_status & VIA_CRDR_SDSTS_DATA_MASK, addrbase + VIA_CRDR_SDSTATUS); via_sdc_data_isr(sdhost, sd_status & VIA_CRDR_SDSTS_DATA_MASK); } sd_status &= ~(VIA_CRDR_SDSTS_CMD_MASK | VIA_CRDR_SDSTS_DATA_MASK); if (sd_status) { pr_err("%s: Unexpected interrupt 0x%x\n", mmc_hostname(sdhost->mmc), sd_status); writew(sd_status, addrbase + VIA_CRDR_SDSTATUS); } result = IRQ_HANDLED; out: spin_unlock(&sdhost->lock); return result; } static void via_sdc_timeout(struct timer_list *t) { struct via_crdr_mmc_host *sdhost; unsigned long flags; sdhost = from_timer(sdhost, t, timer); spin_lock_irqsave(&sdhost->lock, flags); if (sdhost->mrq) { pr_err("%s: Timeout waiting for hardware interrupt." "cmd:0x%x\n", mmc_hostname(sdhost->mmc), sdhost->mrq->cmd->opcode); if (sdhost->data) { writel(VIA_CRDR_DMACTRL_SFTRST, sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL); sdhost->data->error = -ETIMEDOUT; via_sdc_finish_data(sdhost); } else { if (sdhost->cmd) sdhost->cmd->error = -ETIMEDOUT; else sdhost->mrq->cmd->error = -ETIMEDOUT; tasklet_schedule(&sdhost->finish_tasklet); } } spin_unlock_irqrestore(&sdhost->lock, flags); } static void via_sdc_tasklet_finish(unsigned long param) { struct via_crdr_mmc_host *host; unsigned long flags; struct mmc_request *mrq; host = (struct via_crdr_mmc_host *)param; spin_lock_irqsave(&host->lock, flags); del_timer(&host->timer); mrq = host->mrq; host->mrq = NULL; host->cmd = NULL; host->data = NULL; spin_unlock_irqrestore(&host->lock, flags); mmc_request_done(host->mmc, mrq); } static void via_sdc_card_detect(struct work_struct *work) { struct via_crdr_mmc_host *host; void __iomem *addrbase; unsigned long flags; u16 status; host = container_of(work, struct via_crdr_mmc_host, carddet_work); addrbase = host->ddma_mmiobase; writel(VIA_CRDR_DMACTRL_SFTRST, addrbase + VIA_CRDR_DMACTRL); spin_lock_irqsave(&host->lock, flags); addrbase = host->pcictrl_mmiobase; writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK); addrbase = host->sdhc_mmiobase; status = readw(addrbase + VIA_CRDR_SDSTATUS); if (!(status & VIA_CRDR_SDSTS_SLOTG)) { if (host->mrq) { pr_err("%s: Card removed during transfer!\n", mmc_hostname(host->mmc)); host->mrq->cmd->error = -ENOMEDIUM; tasklet_schedule(&host->finish_tasklet); } spin_unlock_irqrestore(&host->lock, flags); via_reset_pcictrl(host); spin_lock_irqsave(&host->lock, flags); } spin_unlock_irqrestore(&host->lock, flags); via_print_pcictrl(host); via_print_sdchc(host); mmc_detect_change(host->mmc, msecs_to_jiffies(500)); } static void via_init_mmc_host(struct via_crdr_mmc_host *host) { struct mmc_host *mmc = host->mmc; void __iomem *addrbase; u32 lenreg; u32 status; timer_setup(&host->timer, via_sdc_timeout, 0); spin_lock_init(&host->lock); mmc->f_min = VIA_CRDR_MIN_CLOCK; mmc->f_max = VIA_CRDR_MAX_CLOCK; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED; mmc->ops = &via_sdc_ops; /*Hardware cannot do scatter lists*/ mmc->max_segs = 1; mmc->max_blk_size = VIA_CRDR_MAX_BLOCK_LENGTH; mmc->max_blk_count = VIA_CRDR_MAX_BLOCK_COUNT; mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count; mmc->max_req_size = mmc->max_seg_size; INIT_WORK(&host->carddet_work, via_sdc_card_detect); tasklet_init(&host->finish_tasklet, via_sdc_tasklet_finish, (unsigned long)host); addrbase = host->sdhc_mmiobase; writel(0x0, addrbase + VIA_CRDR_SDINTMASK); msleep(1); lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN; writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN); status = readw(addrbase + VIA_CRDR_SDSTATUS); status &= VIA_CRDR_SDSTS_W1C_MASK; writew(status, addrbase + VIA_CRDR_SDSTATUS); status = readw(addrbase + VIA_CRDR_SDSTATUS2); status |= VIA_CRDR_SDSTS_CFE; writew(status, addrbase + VIA_CRDR_SDSTATUS2); writeb(0x0, addrbase + VIA_CRDR_SDEXTCTRL); writel(VIA_CRDR_SDACTIVE_INTMASK, addrbase + VIA_CRDR_SDINTMASK); msleep(1); } static int via_sd_probe(struct pci_dev *pcidev, const struct pci_device_id *id) { struct mmc_host *mmc; struct via_crdr_mmc_host *sdhost; u32 base, len; u8 gatt; int ret; pr_info(DRV_NAME ": VIA SDMMC controller found at %s [%04x:%04x] (rev %x)\n", pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device, (int)pcidev->revision); ret = pci_enable_device(pcidev); if (ret) return ret; ret = pci_request_regions(pcidev, DRV_NAME); if (ret) goto disable; pci_write_config_byte(pcidev, VIA_CRDR_PCI_WORK_MODE, 0); pci_write_config_byte(pcidev, VIA_CRDR_PCI_DBG_MODE, 0); mmc = mmc_alloc_host(sizeof(struct via_crdr_mmc_host), &pcidev->dev); if (!mmc) { ret = -ENOMEM; goto release; } sdhost = mmc_priv(mmc); sdhost->mmc = mmc; dev_set_drvdata(&pcidev->dev, sdhost); len = pci_resource_len(pcidev, 0); base = pci_resource_start(pcidev, 0); sdhost->mmiobase = ioremap_nocache(base, len); if (!sdhost->mmiobase) { ret = -ENOMEM; goto free_mmc_host; } sdhost->sdhc_mmiobase = sdhost->mmiobase + VIA_CRDR_SDC_OFF; sdhost->ddma_mmiobase = sdhost->mmiobase + VIA_CRDR_DDMA_OFF; sdhost->pcictrl_mmiobase = sdhost->mmiobase + VIA_CRDR_PCICTRL_OFF; sdhost->power = MMC_VDD_165_195; gatt = VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON; writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); via_pwron_sleep(sdhost); gatt |= VIA_CRDR_PCICLKGATT_SFTRST; writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); msleep(3); via_init_mmc_host(sdhost); ret = request_irq(pcidev->irq, via_sdc_isr, IRQF_SHARED, DRV_NAME, sdhost); if (ret) goto unmap; writeb(VIA_CRDR_PCIINTCTRL_SDCIRQEN, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL); writeb(VIA_CRDR_PCITMOCTRL_1024MS, sdhost->pcictrl_mmiobase + VIA_CRDR_PCITMOCTRL); /* device-specific quirks */ if (pcidev->subsystem_vendor == PCI_VENDOR_ID_LENOVO && pcidev->subsystem_device == 0x3891) sdhost->quirks = VIA_CRDR_QUIRK_300MS_PWRDELAY; mmc_add_host(mmc); return 0; unmap: iounmap(sdhost->mmiobase); free_mmc_host: dev_set_drvdata(&pcidev->dev, NULL); mmc_free_host(mmc); release: pci_release_regions(pcidev); disable: pci_disable_device(pcidev); return ret; } static void via_sd_remove(struct pci_dev *pcidev) { struct via_crdr_mmc_host *sdhost = pci_get_drvdata(pcidev); unsigned long flags; u8 gatt; spin_lock_irqsave(&sdhost->lock, flags); /* Ensure we don't accept more commands from mmc layer */ sdhost->reject = 1; /* Disable generating further interrupts */ writeb(0x0, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL); if (sdhost->mrq) { pr_err("%s: Controller removed during " "transfer\n", mmc_hostname(sdhost->mmc)); /* make sure all DMA is stopped */ writel(VIA_CRDR_DMACTRL_SFTRST, sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL); sdhost->mrq->cmd->error = -ENOMEDIUM; if (sdhost->mrq->stop) sdhost->mrq->stop->error = -ENOMEDIUM; tasklet_schedule(&sdhost->finish_tasklet); } spin_unlock_irqrestore(&sdhost->lock, flags); mmc_remove_host(sdhost->mmc); free_irq(pcidev->irq, sdhost); del_timer_sync(&sdhost->timer); tasklet_kill(&sdhost->finish_tasklet); /* switch off power */ gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON; writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); iounmap(sdhost->mmiobase); dev_set_drvdata(&pcidev->dev, NULL); mmc_free_host(sdhost->mmc); pci_release_regions(pcidev); pci_disable_device(pcidev); pr_info(DRV_NAME ": VIA SDMMC controller at %s [%04x:%04x] has been removed\n", pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device); } #ifdef CONFIG_PM static void via_init_sdc_pm(struct via_crdr_mmc_host *host) { struct sdhcreg *pm_sdhcreg; void __iomem *addrbase; u32 lenreg; u16 status; pm_sdhcreg = &(host->pm_sdhc_reg); addrbase = host->sdhc_mmiobase; writel(0x0, addrbase + VIA_CRDR_SDINTMASK); lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN; writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN); status = readw(addrbase + VIA_CRDR_SDSTATUS); status &= VIA_CRDR_SDSTS_W1C_MASK; writew(status, addrbase + VIA_CRDR_SDSTATUS); status = readw(addrbase + VIA_CRDR_SDSTATUS2); status |= VIA_CRDR_SDSTS_CFE; writew(status, addrbase + VIA_CRDR_SDSTATUS2); writel(pm_sdhcreg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL); writel(pm_sdhcreg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG); writel(pm_sdhcreg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK); writel(pm_sdhcreg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO); writel(pm_sdhcreg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL); writel(pm_sdhcreg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL); via_print_pcictrl(host); via_print_sdchc(host); } static int via_sd_suspend(struct pci_dev *pcidev, pm_message_t state) { struct via_crdr_mmc_host *host; host = pci_get_drvdata(pcidev); via_save_pcictrlreg(host); via_save_sdcreg(host); pci_save_state(pcidev); pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0); pci_disable_device(pcidev); pci_set_power_state(pcidev, pci_choose_state(pcidev, state)); return 0; } static int via_sd_resume(struct pci_dev *pcidev) { struct via_crdr_mmc_host *sdhost; int ret = 0; u8 gatt; sdhost = pci_get_drvdata(pcidev); gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON; if (sdhost->power == MMC_VDD_165_195) gatt &= ~VIA_CRDR_PCICLKGATT_3V3; else gatt |= VIA_CRDR_PCICLKGATT_3V3; writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); via_pwron_sleep(sdhost); gatt |= VIA_CRDR_PCICLKGATT_SFTRST; writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); msleep(3); msleep(100); pci_set_power_state(pcidev, PCI_D0); pci_restore_state(pcidev); ret = pci_enable_device(pcidev); if (ret) return ret; via_restore_pcictrlreg(sdhost); via_init_sdc_pm(sdhost); return ret; } #else /* CONFIG_PM */ #define via_sd_suspend NULL #define via_sd_resume NULL #endif /* CONFIG_PM */ static struct pci_driver via_sd_driver = { .name = DRV_NAME, .id_table = via_ids, .probe = via_sd_probe, .remove = via_sd_remove, .suspend = via_sd_suspend, .resume = via_sd_resume, }; module_pci_driver(via_sd_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("VIA Technologies Inc."); MODULE_DESCRIPTION("VIA SD/MMC Card Interface driver");
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