On 04/09/2012 05:49 PM, Lei Wen wrote:
> Hi Jaehoon,
>
>> -----Original Message-----
>> From: Jaehoon Chung [mailto:jh80.ch...@samsung.com]
>> Sent: Monday, April 09, 2012 3:58 PM
>> To: u-boot@lists.denx.de; Andy Fleming; mk7.k...@samsung.com; Kyungmin Park;
>> Lei Wen
>> Subject: [PATCH v3 2/3] mmc: use sdhci.c intead of s5p_mmc.c
>>
>> In driver mmc, generic sdhci code is implemented.
>> s5p_mmc file is dupulicated.
>> we are good that use the generic sdhci.
>> This patch supported the sdhci for Samsung-SoC.
>>
>> Signed-off-by: Jaehoon Chung <jh80.ch...@samsung.com>
>> Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
>> ---
>> arch/arm/include/asm/arch-exynos/mmc.h | 93 +++---
>> arch/arm/include/asm/arch-s5pc1xx/mmc.h | 93 +++---
>> drivers/mmc/Makefile | 2 +-
>> drivers/mmc/s5p_mmc.c | 490
>> -------------------------------
>> drivers/mmc/s5p_sdhci.c | 98 ++++++
>> drivers/mmc/sdhci.c | 12 +
>> include/sdhci.h | 6 +
>
>
> I think you'd better to separate the sdhci code change with other codes
> change.
> So that others could easily cherry pick your updated sdhci patches.
Ok..i will re-work and resend the patches.
Best Regards,
Jaehoon Chung
>
> Thanks,
> Lei
>
>> 7 files changed, 211 insertions(+), 583 deletions(-)
>> delete mode 100644 drivers/mmc/s5p_mmc.c
>> create mode 100644 drivers/mmc/s5p_sdhci.c
>>
>> diff --git a/arch/arm/include/asm/arch-exynos/mmc.h
>> b/arch/arm/include/asm/arch-exynos/mmc.h
>> index 30f82b8..0f701c9 100644
>> --- a/arch/arm/include/asm/arch-exynos/mmc.h
>> +++ b/arch/arm/include/asm/arch-exynos/mmc.h
>> @@ -21,53 +21,54 @@
>> #ifndef __ASM_ARCH_MMC_H_
>> #define __ASM_ARCH_MMC_H_
>>
>> -#ifndef __ASSEMBLY__
>> -struct s5p_mmc {
>> - unsigned int sysad;
>> - unsigned short blksize;
>> - unsigned short blkcnt;
>> - unsigned int argument;
>> - unsigned short trnmod;
>> - unsigned short cmdreg;
>> - unsigned int rspreg0;
>> - unsigned int rspreg1;
>> - unsigned int rspreg2;
>> - unsigned int rspreg3;
>> - unsigned int bdata;
>> - unsigned int prnsts;
>> - unsigned char hostctl;
>> - unsigned char pwrcon;
>> - unsigned char blkgap;
>> - unsigned char wakcon;
>> - unsigned short clkcon;
>> - unsigned char timeoutcon;
>> - unsigned char swrst;
>> - unsigned int norintsts; /* errintsts */
>> - unsigned int norintstsen; /* errintstsen */
>> - unsigned int norintsigen; /* errintsigen */
>> - unsigned short acmd12errsts;
>> - unsigned char res1[2];
>> - unsigned int capareg;
>> - unsigned char res2[4];
>> - unsigned int maxcurr;
>> - unsigned char res3[0x34];
>> - unsigned int control2;
>> - unsigned int control3;
>> - unsigned char res4[4];
>> - unsigned int control4;
>> - unsigned char res5[0x6e];
>> - unsigned short hcver;
>> - unsigned char res6[0xFF00];
>> -};
>> +#define SDHCI_CONTROL2 0x80
>> +#define SDHCI_CONTROL3 0x84
>> +#define SDHCI_CONTROL4 0x8C
>>
>> -struct mmc_host {
>> - struct s5p_mmc *reg;
>> - unsigned int version; /* SDHCI spec. version */
>> - unsigned int clock; /* Current clock (MHz) */
>> - int dev_index;
>> -};
>> +#define SDHCI_CTRL2_ENSTAASYNCCLR (1 << 31)
>> +#define SDHCI_CTRL2_ENCMDCNFMSK (1 << 30)
>> +#define SDHCI_CTRL2_CDINVRXD3 (1 << 29)
>> +#define SDHCI_CTRL2_SLCARDOUT (1 << 28)
>>
>> -int s5p_mmc_init(int dev_index, int bus_width);
>> +#define SDHCI_CTRL2_FLTCLKSEL_MASK (0xf << 24)
>> +#define SDHCI_CTRL2_FLTCLKSEL_SHIFT (24)
>> +#define SDHCI_CTRL2_FLTCLKSEL(_x) ((_x) << 24)
>>
>> -#endif /* __ASSEMBLY__ */
>> +#define SDHCI_CTRL2_LVLDAT_MASK (0xff << 16)
>> +#define SDHCI_CTRL2_LVLDAT_SHIFT (16)
>> +#define SDHCI_CTRL2_LVLDAT(_x) ((_x) << 16)
>> +
>> +#define SDHCI_CTRL2_ENFBCLKTX (1 << 15)
>> +#define SDHCI_CTRL2_ENFBCLKRX (1 << 14)
>> +#define SDHCI_CTRL2_SDCDSEL (1 << 13)
>> +#define SDHCI_CTRL2_SDSIGPC (1 << 12)
>> +#define SDHCI_CTRL2_ENBUSYCHKTXSTART (1 << 11)
>> +
>> +#define SDHCI_CTRL2_DFCNT_MASK(_x) ((_x) << 9)
>> +#define SDHCI_CTRL2_DFCNT_SHIFT (9)
>> +
>> +#define SDHCI_CTRL2_ENCLKOUTHOLD (1 << 8)
>> +#define SDHCI_CTRL2_RWAITMODE (1 << 7)
>> +#define SDHCI_CTRL2_DISBUFRD (1 << 6)
>> +#define SDHCI_CTRL2_SELBASECLK_MASK(_x) ((_x) << 4)
>> +#define SDHCI_CTRL2_SELBASECLK_SHIFT (4)
>> +#define SDHCI_CTRL2_PWRSYNC (1 << 3)
>> +#define SDHCI_CTRL2_ENCLKOUTMSKCON (1 << 1)
>> +#define SDHCI_CTRL2_HWINITFIN (1 << 0)
>> +
>> +#define SDHCI_CTRL3_FCSEL3 (1 << 31)
>> +#define SDHCI_CTRL3_FCSEL2 (1 << 23)
>> +#define SDHCI_CTRL3_FCSEL1 (1 << 15)
>> +#define SDHCI_CTRL3_FCSEL0 (1 << 7)
>> +
>> +#define SDHCI_CTRL4_DRIVE_MASK(_x) ((_x) << 16)
>> +#define SDHCI_CTRL4_DRIVE_SHIFT (16)
>> +
>> +int s5p_sdhci_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks);
>> +
>> +static inline unsigned int s5p_mmc_init(int index, int bus_width)
>> +{
>> + unsigned int base = samsung_get_base_mmc() + (0x10000 * index);
>> + return s5p_sdhci_init(base, 52000000, 400000, index);
>> +}
>> #endif
>> diff --git a/arch/arm/include/asm/arch-s5pc1xx/mmc.h
>> b/arch/arm/include/asm/arch-s5pc1xx/mmc.h
>> index adef4ee..0f701c9 100644
>> --- a/arch/arm/include/asm/arch-s5pc1xx/mmc.h
>> +++ b/arch/arm/include/asm/arch-s5pc1xx/mmc.h
>> @@ -21,53 +21,54 @@
>> #ifndef __ASM_ARCH_MMC_H_
>> #define __ASM_ARCH_MMC_H_
>>
>> -#ifndef __ASSEMBLY__
>> -struct s5p_mmc {
>> - unsigned int sysad;
>> - unsigned short blksize;
>> - unsigned short blkcnt;
>> - unsigned int argument;
>> - unsigned short trnmod;
>> - unsigned short cmdreg;
>> - unsigned int rspreg0;
>> - unsigned int rspreg1;
>> - unsigned int rspreg2;
>> - unsigned int rspreg3;
>> - unsigned int bdata;
>> - unsigned int prnsts;
>> - unsigned char hostctl;
>> - unsigned char pwrcon;
>> - unsigned char blkgap;
>> - unsigned char wakcon;
>> - unsigned short clkcon;
>> - unsigned char timeoutcon;
>> - unsigned char swrst;
>> - unsigned int norintsts; /* errintsts */
>> - unsigned int norintstsen; /* errintstsen */
>> - unsigned int norintsigen; /* errintsigen */
>> - unsigned short acmd12errsts;
>> - unsigned char res1[2];
>> - unsigned int capareg;
>> - unsigned char res2[4];
>> - unsigned int maxcurr;
>> - unsigned char res3[0x34];
>> - unsigned int control2;
>> - unsigned int control3;
>> - unsigned char res4[4];
>> - unsigned int control4;
>> - unsigned char res5[0x6e];
>> - unsigned short hcver;
>> - unsigned char res6[0xFFF00];
>> -};
>> +#define SDHCI_CONTROL2 0x80
>> +#define SDHCI_CONTROL3 0x84
>> +#define SDHCI_CONTROL4 0x8C
>>
>> -struct mmc_host {
>> - struct s5p_mmc *reg;
>> - unsigned int version; /* SDHCI spec. version */
>> - unsigned int clock; /* Current clock (MHz) */
>> - int dev_index;
>> -};
>> +#define SDHCI_CTRL2_ENSTAASYNCCLR (1 << 31)
>> +#define SDHCI_CTRL2_ENCMDCNFMSK (1 << 30)
>> +#define SDHCI_CTRL2_CDINVRXD3 (1 << 29)
>> +#define SDHCI_CTRL2_SLCARDOUT (1 << 28)
>>
>> -int s5p_mmc_init(int dev_index, int bus_width);
>> +#define SDHCI_CTRL2_FLTCLKSEL_MASK (0xf << 24)
>> +#define SDHCI_CTRL2_FLTCLKSEL_SHIFT (24)
>> +#define SDHCI_CTRL2_FLTCLKSEL(_x) ((_x) << 24)
>>
>> -#endif /* __ASSEMBLY__ */
>> +#define SDHCI_CTRL2_LVLDAT_MASK (0xff << 16)
>> +#define SDHCI_CTRL2_LVLDAT_SHIFT (16)
>> +#define SDHCI_CTRL2_LVLDAT(_x) ((_x) << 16)
>> +
>> +#define SDHCI_CTRL2_ENFBCLKTX (1 << 15)
>> +#define SDHCI_CTRL2_ENFBCLKRX (1 << 14)
>> +#define SDHCI_CTRL2_SDCDSEL (1 << 13)
>> +#define SDHCI_CTRL2_SDSIGPC (1 << 12)
>> +#define SDHCI_CTRL2_ENBUSYCHKTXSTART (1 << 11)
>> +
>> +#define SDHCI_CTRL2_DFCNT_MASK(_x) ((_x) << 9)
>> +#define SDHCI_CTRL2_DFCNT_SHIFT (9)
>> +
>> +#define SDHCI_CTRL2_ENCLKOUTHOLD (1 << 8)
>> +#define SDHCI_CTRL2_RWAITMODE (1 << 7)
>> +#define SDHCI_CTRL2_DISBUFRD (1 << 6)
>> +#define SDHCI_CTRL2_SELBASECLK_MASK(_x) ((_x) << 4)
>> +#define SDHCI_CTRL2_SELBASECLK_SHIFT (4)
>> +#define SDHCI_CTRL2_PWRSYNC (1 << 3)
>> +#define SDHCI_CTRL2_ENCLKOUTMSKCON (1 << 1)
>> +#define SDHCI_CTRL2_HWINITFIN (1 << 0)
>> +
>> +#define SDHCI_CTRL3_FCSEL3 (1 << 31)
>> +#define SDHCI_CTRL3_FCSEL2 (1 << 23)
>> +#define SDHCI_CTRL3_FCSEL1 (1 << 15)
>> +#define SDHCI_CTRL3_FCSEL0 (1 << 7)
>> +
>> +#define SDHCI_CTRL4_DRIVE_MASK(_x) ((_x) << 16)
>> +#define SDHCI_CTRL4_DRIVE_SHIFT (16)
>> +
>> +int s5p_sdhci_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks);
>> +
>> +static inline unsigned int s5p_mmc_init(int index, int bus_width)
>> +{
>> + unsigned int base = samsung_get_base_mmc() + (0x10000 * index);
>> + return s5p_sdhci_init(base, 52000000, 400000, index);
>> +}
>> #endif
>> diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
>> index c245352..a8e681c 100644
>> --- a/drivers/mmc/Makefile
>> +++ b/drivers/mmc/Makefile
>> @@ -39,8 +39,8 @@ COBJS-$(CONFIG_MXS_MMC) += mxsmmc.o
>> COBJS-$(CONFIG_OMAP_HSMMC) += omap_hsmmc.o
>> COBJS-$(CONFIG_PXA_MMC) += pxa_mmc.o
>> COBJS-$(CONFIG_PXA_MMC_GENERIC) += pxa_mmc_gen.o
>> -COBJS-$(CONFIG_S5P_MMC) += s5p_mmc.o
>> COBJS-$(CONFIG_SDHCI) += sdhci.o
>> +COBJS-$(CONFIG_S5P_SDHCI) += s5p_sdhci.o
>> COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
>> COBJS-$(CONFIG_TEGRA2_MMC) += tegra2_mmc.o
>>
>> diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c
>> deleted file mode 100644
>> index 4ae3aaf..0000000
>> --- a/drivers/mmc/s5p_mmc.c
>> +++ /dev/null
>> @@ -1,490 +0,0 @@
>> -/*
>> - * (C) Copyright 2009 SAMSUNG Electronics
>> - * Minkyu Kang <mk7.k...@samsung.com>
>> - * Jaehoon Chung <jh80.ch...@samsung.com>
>> - *
>> - * This program is free software; you can redistribute it and/or modify
>> - * it under the terms of the GNU General Public License as published by
>> - * the Free Software Foundation; either version 2 of the License, or
>> - * (at your option) any later version.
>> - *
>> - * This program is distributed in the hope that it will be useful,
>> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> - * GNU General Public License for more details.
>> - *
>> - * You should have received a copy of the GNU General Public License
>> - * along with this program; if not, write to the Free Software
>> - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
>> - */
>> -
>> -#include <common.h>
>> -#include <mmc.h>
>> -#include <asm/io.h>
>> -#include <asm/arch/mmc.h>
>> -#include <asm/arch/clk.h>
>> -
>> -/* support 4 mmc hosts */
>> -struct mmc mmc_dev[4];
>> -struct mmc_host mmc_host[4];
>> -
>> -static inline struct s5p_mmc *s5p_get_base_mmc(int dev_index)
>> -{
>> - unsigned long offset = dev_index * sizeof(struct s5p_mmc);
>> - return (struct s5p_mmc *)(samsung_get_base_mmc() + offset);
>> -}
>> -
>> -static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data)
>> -{
>> - unsigned char ctrl;
>> -
>> - debug("data->dest: %08x\n", (u32)data->dest);
>> - writel((u32)data->dest, &host->reg->sysad);
>> - /*
>> - * DMASEL[4:3]
>> - * 00 = Selects SDMA
>> - * 01 = Reserved
>> - * 10 = Selects 32-bit Address ADMA2
>> - * 11 = Selects 64-bit Address ADMA2
>> - */
>> - ctrl = readb(&host->reg->hostctl);
>> - ctrl &= ~(3 << 3);
>> - writeb(ctrl, &host->reg->hostctl);
>> -
>> - /* We do not handle DMA boundaries, so set it to max (512 KiB) */
>> - writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize);
>> - writew(data->blocks, &host->reg->blkcnt);
>> -}
>> -
>> -static void mmc_set_transfer_mode(struct mmc_host *host, struct mmc_data
>> *data)
>> -{
>> - unsigned short mode;
>> -
>> - /*
>> - * TRNMOD
>> - * MUL1SIN0[5] : Multi/Single Block Select
>> - * RD1WT0[4] : Data Transfer Direction Select
>> - * 1 = read
>> - * 0 = write
>> - * ENACMD12[2] : Auto CMD12 Enable
>> - * ENBLKCNT[1] : Block Count Enable
>> - * ENDMA[0] : DMA Enable
>> - */
>> - mode = (1 << 1) | (1 << 0);
>> - if (data->blocks > 1)
>> - mode |= (1 << 5);
>> - if (data->flags & MMC_DATA_READ)
>> - mode |= (1 << 4);
>> -
>> - writew(mode, &host->reg->trnmod);
>> -}
>> -
>> -static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
>> - struct mmc_data *data)
>> -{
>> - struct mmc_host *host = (struct mmc_host *)mmc->priv;
>> - int flags, i;
>> - unsigned int timeout;
>> - unsigned int mask;
>> - unsigned int retry = 0x100000;
>> -
>> - /* Wait max 10 ms */
>> - timeout = 10;
>> -
>> - /*
>> - * PRNSTS
>> - * CMDINHDAT[1] : Command Inhibit (DAT)
>> - * CMDINHCMD[0] : Command Inhibit (CMD)
>> - */
>> - mask = (1 << 0);
>> - if ((data != NULL) || (cmd->resp_type & MMC_RSP_BUSY))
>> - mask |= (1 << 1);
>> -
>> - /*
>> - * We shouldn't wait for data inihibit for stop commands, even
>> - * though they might use busy signaling
>> - */
>> - if (data)
>> - mask &= ~(1 << 1);
>> -
>> - while (readl(&host->reg->prnsts) & mask) {
>> - if (timeout == 0) {
>> - printf("%s: timeout error\n", __func__);
>> - return -1;
>> - }
>> - timeout--;
>> - udelay(1000);
>> - }
>> -
>> - if (data)
>> - mmc_prepare_data(host, data);
>> -
>> - debug("cmd->arg: %08x\n", cmd->cmdarg);
>> - writel(cmd->cmdarg, &host->reg->argument);
>> -
>> - if (data)
>> - mmc_set_transfer_mode(host, data);
>> -
>> - if ((cmd->resp_type & MMC_RSP_136) && (cmd->resp_type & MMC_RSP_BUSY))
>> - return -1;
>> -
>> - /*
>> - * CMDREG
>> - * CMDIDX[13:8] : Command index
>> - * DATAPRNT[5] : Data Present Select
>> - * ENCMDIDX[4] : Command Index Check Enable
>> - * ENCMDCRC[3] : Command CRC Check Enable
>> - * RSPTYP[1:0]
>> - * 00 = No Response
>> - * 01 = Length 136
>> - * 10 = Length 48
>> - * 11 = Length 48 Check busy after response
>> - */
>> - if (!(cmd->resp_type & MMC_RSP_PRESENT))
>> - flags = 0;
>> - else if (cmd->resp_type & MMC_RSP_136)
>> - flags = (1 << 0);
>> - else if (cmd->resp_type & MMC_RSP_BUSY)
>> - flags = (3 << 0);
>> - else
>> - flags = (2 << 0);
>> -
>> - if (cmd->resp_type & MMC_RSP_CRC)
>> - flags |= (1 << 3);
>> - if (cmd->resp_type & MMC_RSP_OPCODE)
>> - flags |= (1 << 4);
>> - if (data)
>> - flags |= (1 << 5);
>> -
>> - debug("cmd: %d\n", cmd->cmdidx);
>> -
>> - writew((cmd->cmdidx << 8) | flags, &host->reg->cmdreg);
>> -
>> - for (i = 0; i < retry; i++) {
>> - mask = readl(&host->reg->norintsts);
>> - /* Command Complete */
>> - if (mask & (1 << 0)) {
>> - if (!data)
>> - writel(mask, &host->reg->norintsts);
>> - break;
>> - }
>> - }
>> -
>> - if (i == retry) {
>> - printf("%s: waiting for status update\n", __func__);
>> - return TIMEOUT;
>> - }
>> -
>> - if (mask & (1 << 16)) {
>> - /* Timeout Error */
>> - debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
>> - return TIMEOUT;
>> - } else if (mask & (1 << 15)) {
>> - /* Error Interrupt */
>> - debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
>> - return -1;
>> - }
>> -
>> - if (cmd->resp_type & MMC_RSP_PRESENT) {
>> - if (cmd->resp_type & MMC_RSP_136) {
>> - /* CRC is stripped so we need to do some shifting. */
>> - for (i = 0; i < 4; i++) {
>> - unsigned int offset =
>> - (unsigned int)(&host->reg->rspreg3 -
>> i);
>> - cmd->response[i] = readl(offset) << 8;
>> -
>> - if (i != 3) {
>> - cmd->response[i] |=
>> - readb(offset - 1);
>> - }
>> - debug("cmd->resp[%d]: %08x\n",
>> - i, cmd->response[i]);
>> - }
>> - } else if (cmd->resp_type & MMC_RSP_BUSY) {
>> - for (i = 0; i < retry; i++) {
>> - /* PRNTDATA[23:20] : DAT[3:0] Line Signal */
>> - if (readl(&host->reg->prnsts)
>> - & (1 << 20)) /* DAT[0] */
>> - break;
>> - }
>> -
>> - if (i == retry) {
>> - printf("%s: card is still busy\n", __func__);
>> - return TIMEOUT;
>> - }
>> -
>> - cmd->response[0] = readl(&host->reg->rspreg0);
>> - debug("cmd->resp[0]: %08x\n", cmd->response[0]);
>> - } else {
>> - cmd->response[0] = readl(&host->reg->rspreg0);
>> - debug("cmd->resp[0]: %08x\n", cmd->response[0]);
>> - }
>> - }
>> -
>> - if (data) {
>> - while (1) {
>> - mask = readl(&host->reg->norintsts);
>> -
>> - if (mask & (1 << 15)) {
>> - /* Error Interrupt */
>> - writel(mask, &host->reg->norintsts);
>> - printf("%s: error during transfer: 0x%08x\n",
>> - __func__, mask);
>> - return -1;
>> - } else if (mask & (1 << 3)) {
>> - /*
>> - * DMA Interrupt, restart the transfer where
>> - * it was interrupted.
>> - */
>> - unsigned int address =
>> readl(&host->reg->sysad);
>> -
>> - debug("DMA end\n");
>> - writel((1 << 3), &host->reg->norintsts);
>> - writel(address, &host->reg->sysad);
>> - } else if (mask & (1 << 1)) {
>> - /* Transfer Complete */
>> - debug("r/w is done\n");
>> - break;
>> - }
>> - }
>> - writel(mask, &host->reg->norintsts);
>> - }
>> -
>> - udelay(1000);
>> - return 0;
>> -}
>> -
>> -static void mmc_change_clock(struct mmc_host *host, uint clock)
>> -{
>> - int div;
>> - unsigned short clk;
>> - unsigned long timeout;
>> - unsigned long ctrl2;
>> -
>> - /*
>> - * SELBASECLK[5:4]
>> - * 00/01 = HCLK
>> - * 10 = EPLL
>> - * 11 = XTI or XEXTCLK
>> - */
>> - ctrl2 = readl(&host->reg->control2);
>> - ctrl2 &= ~(3 << 4);
>> - ctrl2 |= (2 << 4);
>> - writel(ctrl2, &host->reg->control2);
>> -
>> - writew(0, &host->reg->clkcon);
>> -
>> - /* XXX: we assume that clock is between 40MHz and 50MHz */
>> - if (clock == 0)
>> - goto out;
>> - else if (clock <= 400000)
>> - div = 0x100;
>> - else if (clock <= 20000000)
>> - div = 4;
>> - else if (clock <= 26000000)
>> - div = 2;
>> - else
>> - div = 1;
>> - debug("div: %d\n", div);
>> -
>> - div >>= 1;
>> - /*
>> - * CLKCON
>> - * SELFREQ[15:8] : base clock divied by value
>> - * ENSDCLK[2] : SD Clock Enable
>> - * STBLINTCLK[1] : Internal Clock Stable
>> - * ENINTCLK[0] : Internal Clock Enable
>> - */
>> - clk = (div << 8) | (1 << 0);
>> - writew(clk, &host->reg->clkcon);
>> -
>> - set_mmc_clk(host->dev_index, div);
>> -
>> - /* Wait max 10 ms */
>> - timeout = 10;
>> - while (!(readw(&host->reg->clkcon) & (1 << 1))) {
>> - if (timeout == 0) {
>> - printf("%s: timeout error\n", __func__);
>> - return;
>> - }
>> - timeout--;
>> - udelay(1000);
>> - }
>> -
>> - clk |= (1 << 2);
>> - writew(clk, &host->reg->clkcon);
>> -
>> -out:
>> - host->clock = clock;
>> -}
>> -
>> -static void mmc_set_ios(struct mmc *mmc)
>> -{
>> - struct mmc_host *host = mmc->priv;
>> - unsigned char ctrl;
>> - unsigned long val;
>> -
>> - debug("bus_width: %x, clock: %d\n", mmc->bus_width, mmc->clock);
>> -
>> - /*
>> - * SELCLKPADDS[17:16]
>> - * 00 = 2mA
>> - * 01 = 4mA
>> - * 10 = 7mA
>> - * 11 = 9mA
>> - */
>> - writel(0x3 << 16, &host->reg->control4);
>> -
>> - val = readl(&host->reg->control2);
>> - val &= (0x3 << 4);
>> -
>> - val |= (1 << 31) | /* write status clear async mode enable */
>> - (1 << 30) | /* command conflict mask enable */
>> - (1 << 14) | /* Feedback Clock Enable for Rx Clock */
>> - (1 << 8); /* SDCLK hold enable */
>> -
>> - writel(val, &host->reg->control2);
>> -
>> - /*
>> - * FCSEL1[15] FCSEL0[7]
>> - * FCSel[1:0] : Rx Feedback Clock Delay Control
>> - * Inverter delay means10ns delay if SDCLK 50MHz setting
>> - * 01 = Delay1 (basic delay)
>> - * 11 = Delay2 (basic delay + 2ns)
>> - * 00 = Delay3 (inverter delay)
>> - * 10 = Delay4 (inverter delay + 2ns)
>> - */
>> - writel(0x8080, &host->reg->control3);
>> -
>> - mmc_change_clock(host, mmc->clock);
>> -
>> - ctrl = readb(&host->reg->hostctl);
>> -
>> - /*
>> - * WIDE8[5]
>> - * 0 = Depend on WIDE4
>> - * 1 = 8-bit mode
>> - * WIDE4[1]
>> - * 1 = 4-bit mode
>> - * 0 = 1-bit mode
>> - */
>> - if (mmc->bus_width == 8)
>> - ctrl |= (1 << 5);
>> - else if (mmc->bus_width == 4)
>> - ctrl |= (1 << 1);
>> - else
>> - ctrl &= ~(1 << 1);
>> -
>> - /*
>> - * OUTEDGEINV[2]
>> - * 1 = Riging edge output
>> - * 0 = Falling edge output
>> - */
>> - ctrl &= ~(1 << 2);
>> -
>> - writeb(ctrl, &host->reg->hostctl);
>> -}
>> -
>> -static void mmc_reset(struct mmc_host *host)
>> -{
>> - unsigned int timeout;
>> -
>> - /*
>> - * RSTALL[0] : Software reset for all
>> - * 1 = reset
>> - * 0 = work
>> - */
>> - writeb((1 << 0), &host->reg->swrst);
>> -
>> - host->clock = 0;
>> -
>> - /* Wait max 100 ms */
>> - timeout = 100;
>> -
>> - /* hw clears the bit when it's done */
>> - while (readb(&host->reg->swrst) & (1 << 0)) {
>> - if (timeout == 0) {
>> - printf("%s: timeout error\n", __func__);
>> - return;
>> - }
>> - timeout--;
>> - udelay(1000);
>> - }
>> -}
>> -
>> -static int mmc_core_init(struct mmc *mmc)
>> -{
>> - struct mmc_host *host = (struct mmc_host *)mmc->priv;
>> - unsigned int mask;
>> -
>> - mmc_reset(host);
>> -
>> - host->version = readw(&host->reg->hcver);
>> -
>> - /* mask all */
>> - writel(0xffffffff, &host->reg->norintstsen);
>> - writel(0xffffffff, &host->reg->norintsigen);
>> -
>> - writeb(0xe, &host->reg->timeoutcon); /* TMCLK * 2^27 */
>> -
>> - /*
>> - * NORMAL Interrupt Status Enable Register init
>> - * [5] ENSTABUFRDRDY : Buffer Read Ready Status Enable
>> - * [4] ENSTABUFWTRDY : Buffer write Ready Status Enable
>> - * [3] ENSTADMAINT : DMA Interrupt Status Enable
>> - * [1] ENSTASTANSCMPLT : Transfre Complete Status Enable
>> - * [0] ENSTACMDCMPLT : Command Complete Status Enable
>> - */
>> - mask = readl(&host->reg->norintstsen);
>> - mask &= ~(0xffff);
>> - mask |= (1 << 5) | (1 << 4) | (1 << 3) | (1 << 1) | (1 << 0);
>> - writel(mask, &host->reg->norintstsen);
>> -
>> - /*
>> - * NORMAL Interrupt Signal Enable Register init
>> - * [1] ENSTACMDCMPLT : Transfer Complete Signal Enable
>> - */
>> - mask = readl(&host->reg->norintsigen);
>> - mask &= ~(0xffff);
>> - mask |= (1 << 1);
>> - writel(mask, &host->reg->norintsigen);
>> -
>> - return 0;
>> -}
>> -
>> -static int s5p_mmc_initialize(int dev_index, int bus_width)
>> -{
>> - struct mmc *mmc;
>> -
>> - mmc = &mmc_dev[dev_index];
>> -
>> - sprintf(mmc->name, "SAMSUNG SD/MMC");
>> - mmc->priv = &mmc_host[dev_index];
>> - mmc->send_cmd = mmc_send_cmd;
>> - mmc->set_ios = mmc_set_ios;
>> - mmc->init = mmc_core_init;
>> - mmc->getcd = NULL;
>> -
>> - mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
>> - if (bus_width == 8)
>> - mmc->host_caps = MMC_MODE_8BIT;
>> - else
>> - mmc->host_caps = MMC_MODE_4BIT;
>> - mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC;
>> -
>> - mmc->f_min = 400000;
>> - mmc->f_max = 52000000;
>> -
>> - mmc_host[dev_index].dev_index = dev_index;
>> - mmc_host[dev_index].clock = 0;
>> - mmc_host[dev_index].reg = s5p_get_base_mmc(dev_index);
>> - mmc->b_max = 0;
>> - mmc_register(mmc);
>> -
>> - return 0;
>> -}
>> -
>> -int s5p_mmc_init(int dev_index, int bus_width)
>> -{
>> - return s5p_mmc_initialize(dev_index, bus_width);
>> -}
>> diff --git a/drivers/mmc/s5p_sdhci.c b/drivers/mmc/s5p_sdhci.c
>> new file mode 100644
>> index 0000000..1d4481b
>> --- /dev/null
>> +++ b/drivers/mmc/s5p_sdhci.c
>> @@ -0,0 +1,98 @@
>> +/*
>> + * (C) Copyright 2012 SAMSUNG Electronics
>> + * Jaehoon Chung <jh80.ch...@samsung.com>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> + * GNU General Public License for more details.
>> + *
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, write to the Free Software
>> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
>> + */
>> +
>> +#include <common.h>
>> +#include <malloc.h>
>> +#include <sdhci.h>
>> +#include <asm/arch/mmc.h>
>> +
>> +static char *S5P_NAME = "SAMSUNG SDHCI";
>> +static void s5p_sdhci_set_control_reg(struct sdhci_host *host)
>> +{
>> + unsigned long val, ctrl;
>> + /*
>> + * SELCLKPADDS[17:16]
>> + * 00 = 2mA
>> + * 01 = 4mA
>> + * 10 = 7mA
>> + * 11 = 9mA
>> + */
>> + sdhci_writel(host, SDHCI_CTRL4_DRIVE_MASK(0x3), SDHCI_CONTROL4);
>> +
>> + val = sdhci_readl(host, SDHCI_CONTROL2);
>> + val &= SDHCI_CTRL2_SELBASECLK_SHIFT;
>> +
>> + val |= SDHCI_CTRL2_ENSTAASYNCCLR |
>> + SDHCI_CTRL2_ENCMDCNFMSK |
>> + SDHCI_CTRL2_ENFBCLKRX |
>> + SDHCI_CTRL2_ENCLKOUTHOLD;
>> +
>> + sdhci_writel(host, val, SDHCI_CONTROL2);
>> +
>> + /*
>> + * FCSEL3[31] FCSEL2[23] FCSEL1[15] FCSEL0[7]
>> + * FCSel[1:0] : Rx Feedback Clock Delay Control
>> + * Inverter delay means10ns delay if SDCLK 50MHz setting
>> + * 01 = Delay1 (basic delay)
>> + * 11 = Delay2 (basic delay + 2ns)
>> + * 00 = Delay3 (inverter delay)
>> + * 10 = Delay4 (inverter delay + 2ns)
>> + */
>> + val = SDHCI_CTRL3_FCSEL3 | SDHCI_CTRL3_FCSEL1;
>> + sdhci_writel(host, val, SDHCI_CONTROL3);
>> +
>> + /*
>> + * SELBASECLK[5:4]
>> + * 00/01 = HCLK
>> + * 10 = EPLL
>> + * 11 = XTI or XEXTCLK
>> + */
>> + ctrl = sdhci_readl(host, SDHCI_CONTROL2);
>> + ctrl &= ~SDHCI_CTRL2_SELBASECLK_MASK(0x3);
>> + ctrl |= SDHCI_CTRL2_SELBASECLK_MASK(0x2);
>> + sdhci_writel(host, ctrl, SDHCI_CONTROL2);
>> +}
>> +
>> +int s5p_sdhci_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
>> +{
>> + struct sdhci_host *host = NULL;
>> + host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
>> + if (!host) {
>> + printf("sdhci__host malloc fail!\n");
>> + return 1;
>> + }
>> +
>> + host->name = S5P_NAME;
>> + host->ioaddr = (void *)regbase;
>> + host->quirks = quirks;
>> +
>> + host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE;
>> + host->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
>> + if (quirks & SDHCI_QUIRK_REG32_RW)
>> + host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >>
>> 16;
>> + else
>> + host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
>> +
>> + host->set_control_reg = &s5p_sdhci_set_control_reg;
>> +
>> + host->host_caps = MMC_MODE_HC;
>> +
>> + add_sdhci(host, max_clk, min_clk);
>> + return 0;
>> +}
>> diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
>> index 4de19e8..a5d89c1 100644
>> --- a/drivers/mmc/sdhci.c
>> +++ b/drivers/mmc/sdhci.c
>> @@ -337,6 +337,9 @@ void sdhci_set_ios(struct mmc *mmc)
>> u32 ctrl;
>> struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
>>
>> + if (host->set_control_reg)
>> + host->set_control_reg(host);
>> +
>> if (mmc->clock != host->clock)
>> sdhci_set_clock(mmc, mmc->clock);
>>
>> @@ -360,6 +363,9 @@ void sdhci_set_ios(struct mmc *mmc)
>> else
>> ctrl &= ~SDHCI_CTRL_HISPD;
>>
>> + if (host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)
>> + ctrl &= ~SDHCI_CTRL_HISPD;
>> +
>> sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
>> }
>>
>> @@ -443,9 +449,15 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32
>> min_clk)
>> mmc->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
>> if (caps & SDHCI_CAN_VDD_180)
>> mmc->voltages |= MMC_VDD_165_195;
>> +
>> + if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
>> + mmc->voltages |= host->voltages;
>> +
>> mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
>> if (caps & SDHCI_CAN_DO_8BIT)
>> mmc->host_caps |= MMC_MODE_8BIT;
>> + if (host->host_caps)
>> + mmc->host_caps |= host->host_caps;
>>
>> sdhci_reset(host, SDHCI_RESET_ALL);
>> mmc_register(mmc);
>> diff --git a/include/sdhci.h b/include/sdhci.h
>> index a2415ba..9d37183 100644
>> --- a/include/sdhci.h
>> +++ b/include/sdhci.h
>> @@ -217,6 +217,8 @@
>> #define SDHCI_QUIRK_32BIT_DMA_ADDR (1 << 0)
>> #define SDHCI_QUIRK_REG32_RW (1 << 1)
>> #define SDHCI_QUIRK_BROKEN_R1B (1 << 2)
>> +#define SDHCI_QUIRK_NO_HISPD_BIT (1 << 3)
>> +#define SDHCI_QUIRK_BROKEN_VOLTAGE (1 << 4)
>>
>> /* to make gcc happy */
>> struct sdhci_host;
>> @@ -241,10 +243,14 @@ struct sdhci_host {
>> char *name;
>> void *ioaddr;
>> unsigned int quirks;
>> + unsigned int host_caps;
>> unsigned int version;
>> unsigned int clock;
>> struct mmc *mmc;
>> const struct sdhci_ops *ops;
>> +
>> + void (*set_control_reg)(struct sdhci_host *host);
>> + uint voltages;
>> };
>>
>> #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
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