diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/mmc/host/sdhci-pxav3.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/mmc/host/sdhci-pxav3.c | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/ANDROID_3.4.5/drivers/mmc/host/sdhci-pxav3.c b/ANDROID_3.4.5/drivers/mmc/host/sdhci-pxav3.c deleted file mode 100644 index f2969568..00000000 --- a/ANDROID_3.4.5/drivers/mmc/host/sdhci-pxav3.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * Copyright (C) 2010 Marvell International Ltd. - * Zhangfei Gao <zhangfei.gao@marvell.com> - * Kevin Wang <dwang4@marvell.com> - * Mingwei Wang <mwwang@marvell.com> - * Philip Rakity <prakity@marvell.com> - * Mark Brown <markb@marvell.com> - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * 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. - * - */ -#include <linux/err.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/gpio.h> -#include <linux/mmc/card.h> -#include <linux/mmc/host.h> -#include <linux/platform_data/pxa_sdhci.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/module.h> -#include "sdhci.h" -#include "sdhci-pltfm.h" - -#define SD_CLOCK_BURST_SIZE_SETUP 0x10A -#define SDCLK_SEL 0x100 -#define SDCLK_DELAY_SHIFT 9 -#define SDCLK_DELAY_MASK 0x1f - -#define SD_CFG_FIFO_PARAM 0x100 -#define SDCFG_GEN_PAD_CLK_ON (1<<6) -#define SDCFG_GEN_PAD_CLK_CNT_MASK 0xFF -#define SDCFG_GEN_PAD_CLK_CNT_SHIFT 24 - -#define SD_SPI_MODE 0x108 -#define SD_CE_ATA_1 0x10C - -#define SD_CE_ATA_2 0x10E -#define SDCE_MISC_INT (1<<2) -#define SDCE_MISC_INT_EN (1<<1) - -static void pxav3_set_private_registers(struct sdhci_host *host, u8 mask) -{ - struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc)); - struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; - - if (mask == SDHCI_RESET_ALL) { - /* - * tune timing of read data/command when crc error happen - * no performance impact - */ - if (pdata && 0 != pdata->clk_delay_cycles) { - u16 tmp; - - tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP); - tmp |= (pdata->clk_delay_cycles & SDCLK_DELAY_MASK) - << SDCLK_DELAY_SHIFT; - tmp |= SDCLK_SEL; - writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP); - } - } -} - -#define MAX_WAIT_COUNT 5 -static void pxav3_gen_init_74_clocks(struct sdhci_host *host, u8 power_mode) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_pxa *pxa = pltfm_host->priv; - u16 tmp; - int count; - - if (pxa->power_mode == MMC_POWER_UP - && power_mode == MMC_POWER_ON) { - - dev_dbg(mmc_dev(host->mmc), - "%s: slot->power_mode = %d," - "ios->power_mode = %d\n", - __func__, - pxa->power_mode, - power_mode); - - /* set we want notice of when 74 clocks are sent */ - tmp = readw(host->ioaddr + SD_CE_ATA_2); - tmp |= SDCE_MISC_INT_EN; - writew(tmp, host->ioaddr + SD_CE_ATA_2); - - /* start sending the 74 clocks */ - tmp = readw(host->ioaddr + SD_CFG_FIFO_PARAM); - tmp |= SDCFG_GEN_PAD_CLK_ON; - writew(tmp, host->ioaddr + SD_CFG_FIFO_PARAM); - - /* slowest speed is about 100KHz or 10usec per clock */ - udelay(740); - count = 0; - - while (count++ < MAX_WAIT_COUNT) { - if ((readw(host->ioaddr + SD_CE_ATA_2) - & SDCE_MISC_INT) == 0) - break; - udelay(10); - } - - if (count == MAX_WAIT_COUNT) - dev_warn(mmc_dev(host->mmc), "74 clock interrupt not cleared\n"); - - /* clear the interrupt bit if posted */ - tmp = readw(host->ioaddr + SD_CE_ATA_2); - tmp |= SDCE_MISC_INT; - writew(tmp, host->ioaddr + SD_CE_ATA_2); - } - pxa->power_mode = power_mode; -} - -static int pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) -{ - u16 ctrl_2; - - /* - * Set V18_EN -- UHS modes do not work without this. - * does not change signaling voltage - */ - ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); - - /* Select Bus Speed Mode for host */ - ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; - switch (uhs) { - case MMC_TIMING_UHS_SDR12: - ctrl_2 |= SDHCI_CTRL_UHS_SDR12; - break; - case MMC_TIMING_UHS_SDR25: - ctrl_2 |= SDHCI_CTRL_UHS_SDR25; - break; - case MMC_TIMING_UHS_SDR50: - ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180; - break; - case MMC_TIMING_UHS_SDR104: - ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180; - break; - case MMC_TIMING_UHS_DDR50: - ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180; - break; - } - - sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); - dev_dbg(mmc_dev(host->mmc), - "%s uhs = %d, ctrl_2 = %04X\n", - __func__, uhs, ctrl_2); - - return 0; -} - -static struct sdhci_ops pxav3_sdhci_ops = { - .platform_reset_exit = pxav3_set_private_registers, - .set_uhs_signaling = pxav3_set_uhs_signaling, - .platform_send_init_74_clocks = pxav3_gen_init_74_clocks, -}; - -static int __devinit sdhci_pxav3_probe(struct platform_device *pdev) -{ - struct sdhci_pltfm_host *pltfm_host; - struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data; - struct device *dev = &pdev->dev; - struct sdhci_host *host = NULL; - struct sdhci_pxa *pxa = NULL; - int ret; - struct clk *clk; - - pxa = kzalloc(sizeof(struct sdhci_pxa), GFP_KERNEL); - if (!pxa) - return -ENOMEM; - - host = sdhci_pltfm_init(pdev, NULL); - if (IS_ERR(host)) { - kfree(pxa); - return PTR_ERR(host); - } - pltfm_host = sdhci_priv(host); - pltfm_host->priv = pxa; - - clk = clk_get(dev, "PXA-SDHCLK"); - if (IS_ERR(clk)) { - dev_err(dev, "failed to get io clock\n"); - ret = PTR_ERR(clk); - goto err_clk_get; - } - pltfm_host->clk = clk; - clk_enable(clk); - - host->quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL - | SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC - | SDHCI_QUIRK_32BIT_ADMA_SIZE; - - /* enable 1/8V DDR capable */ - host->mmc->caps |= MMC_CAP_1_8V_DDR; - - if (pdata) { - if (pdata->flags & PXA_FLAG_CARD_PERMANENT) { - /* on-chip device */ - host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION; - host->mmc->caps |= MMC_CAP_NONREMOVABLE; - } - - /* If slot design supports 8 bit data, indicate this to MMC. */ - if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT) - host->mmc->caps |= MMC_CAP_8_BIT_DATA; - - if (pdata->quirks) - host->quirks |= pdata->quirks; - if (pdata->host_caps) - host->mmc->caps |= pdata->host_caps; - if (pdata->pm_caps) - host->mmc->pm_caps |= pdata->pm_caps; - } - - host->ops = &pxav3_sdhci_ops; - - ret = sdhci_add_host(host); - if (ret) { - dev_err(&pdev->dev, "failed to add host\n"); - goto err_add_host; - } - - platform_set_drvdata(pdev, host); - - return 0; - -err_add_host: - clk_disable(clk); - clk_put(clk); -err_clk_get: - sdhci_pltfm_free(pdev); - kfree(pxa); - return ret; -} - -static int __devexit sdhci_pxav3_remove(struct platform_device *pdev) -{ - struct sdhci_host *host = platform_get_drvdata(pdev); - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct sdhci_pxa *pxa = pltfm_host->priv; - - sdhci_remove_host(host, 1); - - clk_disable(pltfm_host->clk); - clk_put(pltfm_host->clk); - sdhci_pltfm_free(pdev); - kfree(pxa); - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static struct platform_driver sdhci_pxav3_driver = { - .driver = { - .name = "sdhci-pxav3", - .owner = THIS_MODULE, - .pm = SDHCI_PLTFM_PMOPS, - }, - .probe = sdhci_pxav3_probe, - .remove = __devexit_p(sdhci_pxav3_remove), -}; - -module_platform_driver(sdhci_pxav3_driver); - -MODULE_DESCRIPTION("SDHCI driver for pxav3"); -MODULE_AUTHOR("Marvell International Ltd."); -MODULE_LICENSE("GPL v2"); - |