forked from Minki/linux
f599da406b
Commit 0e74823429
("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-pxav3
to this allocation.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
593 lines
15 KiB
C
593 lines
15 KiB
C
/*
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* Copyright (C) 2010 Marvell International Ltd.
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* Zhangfei Gao <zhangfei.gao@marvell.com>
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* Kevin Wang <dwang4@marvell.com>
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* Mingwei Wang <mwwang@marvell.com>
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* Philip Rakity <prakity@marvell.com>
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* Mark Brown <markb@marvell.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/slot-gpio.h>
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#include <linux/platform_data/pxa_sdhci.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/pm.h>
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#include <linux/pm_runtime.h>
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#include <linux/mbus.h>
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#include "sdhci.h"
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#include "sdhci-pltfm.h"
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#define PXAV3_RPM_DELAY_MS 50
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#define SD_CLOCK_BURST_SIZE_SETUP 0x10A
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#define SDCLK_SEL 0x100
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#define SDCLK_DELAY_SHIFT 9
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#define SDCLK_DELAY_MASK 0x1f
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#define SD_CFG_FIFO_PARAM 0x100
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#define SDCFG_GEN_PAD_CLK_ON (1<<6)
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#define SDCFG_GEN_PAD_CLK_CNT_MASK 0xFF
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#define SDCFG_GEN_PAD_CLK_CNT_SHIFT 24
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#define SD_SPI_MODE 0x108
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#define SD_CE_ATA_1 0x10C
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#define SD_CE_ATA_2 0x10E
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#define SDCE_MISC_INT (1<<2)
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#define SDCE_MISC_INT_EN (1<<1)
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struct sdhci_pxa {
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struct clk *clk_core;
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struct clk *clk_io;
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u8 power_mode;
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void __iomem *sdio3_conf_reg;
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};
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/*
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* These registers are relative to the second register region, for the
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* MBus bridge.
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*/
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#define SDHCI_WINDOW_CTRL(i) (0x80 + ((i) << 3))
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#define SDHCI_WINDOW_BASE(i) (0x84 + ((i) << 3))
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#define SDHCI_MAX_WIN_NUM 8
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/*
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* Fields below belong to SDIO3 Configuration Register (third register
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* region for the Armada 38x flavor)
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*/
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#define SDIO3_CONF_CLK_INV BIT(0)
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#define SDIO3_CONF_SD_FB_CLK BIT(2)
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static int mv_conf_mbus_windows(struct platform_device *pdev,
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const struct mbus_dram_target_info *dram)
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{
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int i;
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void __iomem *regs;
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struct resource *res;
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if (!dram) {
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dev_err(&pdev->dev, "no mbus dram info\n");
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return -EINVAL;
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}
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res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
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if (!res) {
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dev_err(&pdev->dev, "cannot get mbus registers\n");
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return -EINVAL;
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}
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regs = ioremap(res->start, resource_size(res));
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if (!regs) {
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dev_err(&pdev->dev, "cannot map mbus registers\n");
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return -ENOMEM;
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}
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for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) {
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writel(0, regs + SDHCI_WINDOW_CTRL(i));
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writel(0, regs + SDHCI_WINDOW_BASE(i));
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}
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for (i = 0; i < dram->num_cs; i++) {
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const struct mbus_dram_window *cs = dram->cs + i;
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/* Write size, attributes and target id to control register */
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writel(((cs->size - 1) & 0xffff0000) |
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(cs->mbus_attr << 8) |
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(dram->mbus_dram_target_id << 4) | 1,
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regs + SDHCI_WINDOW_CTRL(i));
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/* Write base address to base register */
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writel(cs->base, regs + SDHCI_WINDOW_BASE(i));
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}
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iounmap(regs);
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return 0;
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}
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static int armada_38x_quirks(struct platform_device *pdev,
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struct sdhci_host *host)
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{
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struct device_node *np = pdev->dev.of_node;
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
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struct resource *res;
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host->quirks &= ~SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN;
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host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
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host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
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host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
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"conf-sdio3");
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if (res) {
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pxa->sdio3_conf_reg = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(pxa->sdio3_conf_reg))
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return PTR_ERR(pxa->sdio3_conf_reg);
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} else {
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/*
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* According to erratum 'FE-2946959' both SDR50 and DDR50
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* modes require specific clock adjustments in SDIO3
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* Configuration register, if the adjustment is not done,
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* remove them from the capabilities.
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*/
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host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);
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dev_warn(&pdev->dev, "conf-sdio3 register not found: disabling SDR50 and DDR50 modes.\nConsider updating your dtb\n");
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}
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/*
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* According to erratum 'ERR-7878951' Armada 38x SDHCI
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* controller has different capabilities than the ones shown
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* in its registers
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*/
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if (of_property_read_bool(np, "no-1-8-v")) {
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host->caps &= ~SDHCI_CAN_VDD_180;
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host->mmc->caps &= ~MMC_CAP_1_8V_DDR;
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} else {
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host->caps &= ~SDHCI_CAN_VDD_330;
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}
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host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_USE_SDR50_TUNING);
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return 0;
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}
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static void pxav3_reset(struct sdhci_host *host, u8 mask)
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{
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struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
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struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
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sdhci_reset(host, mask);
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if (mask == SDHCI_RESET_ALL) {
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/*
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* tune timing of read data/command when crc error happen
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* no performance impact
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*/
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if (pdata && 0 != pdata->clk_delay_cycles) {
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u16 tmp;
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tmp = readw(host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
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tmp |= (pdata->clk_delay_cycles & SDCLK_DELAY_MASK)
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<< SDCLK_DELAY_SHIFT;
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tmp |= SDCLK_SEL;
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writew(tmp, host->ioaddr + SD_CLOCK_BURST_SIZE_SETUP);
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}
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}
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}
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#define MAX_WAIT_COUNT 5
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static void pxav3_gen_init_74_clocks(struct sdhci_host *host, u8 power_mode)
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{
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
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u16 tmp;
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int count;
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if (pxa->power_mode == MMC_POWER_UP
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&& power_mode == MMC_POWER_ON) {
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dev_dbg(mmc_dev(host->mmc),
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"%s: slot->power_mode = %d,"
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"ios->power_mode = %d\n",
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__func__,
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pxa->power_mode,
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power_mode);
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/* set we want notice of when 74 clocks are sent */
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tmp = readw(host->ioaddr + SD_CE_ATA_2);
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tmp |= SDCE_MISC_INT_EN;
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writew(tmp, host->ioaddr + SD_CE_ATA_2);
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/* start sending the 74 clocks */
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tmp = readw(host->ioaddr + SD_CFG_FIFO_PARAM);
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tmp |= SDCFG_GEN_PAD_CLK_ON;
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writew(tmp, host->ioaddr + SD_CFG_FIFO_PARAM);
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/* slowest speed is about 100KHz or 10usec per clock */
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udelay(740);
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count = 0;
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while (count++ < MAX_WAIT_COUNT) {
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if ((readw(host->ioaddr + SD_CE_ATA_2)
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& SDCE_MISC_INT) == 0)
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break;
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udelay(10);
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}
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if (count == MAX_WAIT_COUNT)
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dev_warn(mmc_dev(host->mmc), "74 clock interrupt not cleared\n");
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/* clear the interrupt bit if posted */
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tmp = readw(host->ioaddr + SD_CE_ATA_2);
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tmp |= SDCE_MISC_INT;
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writew(tmp, host->ioaddr + SD_CE_ATA_2);
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}
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pxa->power_mode = power_mode;
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}
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static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
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{
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
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u16 ctrl_2;
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/*
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* Set V18_EN -- UHS modes do not work without this.
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* does not change signaling voltage
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*/
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ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
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/* Select Bus Speed Mode for host */
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ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
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switch (uhs) {
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case MMC_TIMING_UHS_SDR12:
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ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
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break;
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case MMC_TIMING_UHS_SDR25:
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ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
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break;
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case MMC_TIMING_UHS_SDR50:
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ctrl_2 |= SDHCI_CTRL_UHS_SDR50 | SDHCI_CTRL_VDD_180;
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break;
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case MMC_TIMING_UHS_SDR104:
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ctrl_2 |= SDHCI_CTRL_UHS_SDR104 | SDHCI_CTRL_VDD_180;
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break;
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case MMC_TIMING_MMC_DDR52:
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case MMC_TIMING_UHS_DDR50:
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ctrl_2 |= SDHCI_CTRL_UHS_DDR50 | SDHCI_CTRL_VDD_180;
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break;
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}
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/*
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* Update SDIO3 Configuration register according to erratum
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* FE-2946959
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*/
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if (pxa->sdio3_conf_reg) {
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u8 reg_val = readb(pxa->sdio3_conf_reg);
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if (uhs == MMC_TIMING_UHS_SDR50 ||
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uhs == MMC_TIMING_UHS_DDR50) {
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reg_val &= ~SDIO3_CONF_CLK_INV;
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reg_val |= SDIO3_CONF_SD_FB_CLK;
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} else if (uhs == MMC_TIMING_MMC_HS) {
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reg_val &= ~SDIO3_CONF_CLK_INV;
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reg_val &= ~SDIO3_CONF_SD_FB_CLK;
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} else {
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reg_val |= SDIO3_CONF_CLK_INV;
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reg_val &= ~SDIO3_CONF_SD_FB_CLK;
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}
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writeb(reg_val, pxa->sdio3_conf_reg);
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}
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sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
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dev_dbg(mmc_dev(host->mmc),
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"%s uhs = %d, ctrl_2 = %04X\n",
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__func__, uhs, ctrl_2);
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}
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static const struct sdhci_ops pxav3_sdhci_ops = {
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.set_clock = sdhci_set_clock,
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.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
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.get_max_clock = sdhci_pltfm_clk_get_max_clock,
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.set_bus_width = sdhci_set_bus_width,
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.reset = pxav3_reset,
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.set_uhs_signaling = pxav3_set_uhs_signaling,
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};
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static struct sdhci_pltfm_data sdhci_pxav3_pdata = {
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.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
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| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
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| SDHCI_QUIRK_32BIT_ADMA_SIZE
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| SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
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.ops = &pxav3_sdhci_ops,
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};
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#ifdef CONFIG_OF
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static const struct of_device_id sdhci_pxav3_of_match[] = {
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{
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.compatible = "mrvl,pxav3-mmc",
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},
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{
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.compatible = "marvell,armada-380-sdhci",
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, sdhci_pxav3_of_match);
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static struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
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{
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struct sdhci_pxa_platdata *pdata;
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struct device_node *np = dev->of_node;
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u32 clk_delay_cycles;
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pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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return NULL;
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if (!of_property_read_u32(np, "mrvl,clk-delay-cycles",
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&clk_delay_cycles))
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pdata->clk_delay_cycles = clk_delay_cycles;
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return pdata;
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}
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#else
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static inline struct sdhci_pxa_platdata *pxav3_get_mmc_pdata(struct device *dev)
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{
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return NULL;
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}
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#endif
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static int sdhci_pxav3_probe(struct platform_device *pdev)
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{
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struct sdhci_pltfm_host *pltfm_host;
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struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
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struct device *dev = &pdev->dev;
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struct device_node *np = pdev->dev.of_node;
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struct sdhci_host *host = NULL;
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struct sdhci_pxa *pxa = NULL;
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const struct of_device_id *match;
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int ret;
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host = sdhci_pltfm_init(pdev, &sdhci_pxav3_pdata, sizeof(*pxa));
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if (IS_ERR(host))
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return PTR_ERR(host);
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pltfm_host = sdhci_priv(host);
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pxa = sdhci_pltfm_priv(pltfm_host);
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pxa->clk_io = devm_clk_get(dev, "io");
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if (IS_ERR(pxa->clk_io))
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pxa->clk_io = devm_clk_get(dev, NULL);
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if (IS_ERR(pxa->clk_io)) {
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dev_err(dev, "failed to get io clock\n");
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ret = PTR_ERR(pxa->clk_io);
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goto err_clk_get;
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}
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pltfm_host->clk = pxa->clk_io;
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clk_prepare_enable(pxa->clk_io);
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pxa->clk_core = devm_clk_get(dev, "core");
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if (!IS_ERR(pxa->clk_core))
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clk_prepare_enable(pxa->clk_core);
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/* enable 1/8V DDR capable */
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host->mmc->caps |= MMC_CAP_1_8V_DDR;
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if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
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ret = armada_38x_quirks(pdev, host);
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if (ret < 0)
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goto err_mbus_win;
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ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
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if (ret < 0)
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goto err_mbus_win;
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}
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match = of_match_device(of_match_ptr(sdhci_pxav3_of_match), &pdev->dev);
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if (match) {
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ret = mmc_of_parse(host->mmc);
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if (ret)
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goto err_of_parse;
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sdhci_get_of_property(pdev);
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pdata = pxav3_get_mmc_pdata(dev);
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pdev->dev.platform_data = pdata;
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} else if (pdata) {
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/* on-chip device */
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if (pdata->flags & PXA_FLAG_CARD_PERMANENT)
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host->mmc->caps |= MMC_CAP_NONREMOVABLE;
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/* If slot design supports 8 bit data, indicate this to MMC. */
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if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
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host->mmc->caps |= MMC_CAP_8_BIT_DATA;
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if (pdata->quirks)
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host->quirks |= pdata->quirks;
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if (pdata->quirks2)
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host->quirks2 |= pdata->quirks2;
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if (pdata->host_caps)
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host->mmc->caps |= pdata->host_caps;
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if (pdata->host_caps2)
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host->mmc->caps2 |= pdata->host_caps2;
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if (pdata->pm_caps)
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host->mmc->pm_caps |= pdata->pm_caps;
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if (gpio_is_valid(pdata->ext_cd_gpio)) {
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ret = mmc_gpio_request_cd(host->mmc, pdata->ext_cd_gpio,
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0);
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if (ret) {
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dev_err(mmc_dev(host->mmc),
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"failed to allocate card detect gpio\n");
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goto err_cd_req;
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}
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}
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}
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pm_runtime_get_noresume(&pdev->dev);
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pm_runtime_set_active(&pdev->dev);
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pm_runtime_set_autosuspend_delay(&pdev->dev, PXAV3_RPM_DELAY_MS);
|
|
pm_runtime_use_autosuspend(&pdev->dev);
|
|
pm_runtime_enable(&pdev->dev);
|
|
pm_suspend_ignore_children(&pdev->dev, 1);
|
|
|
|
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);
|
|
|
|
if (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ)
|
|
device_init_wakeup(&pdev->dev, 1);
|
|
|
|
pm_runtime_put_autosuspend(&pdev->dev);
|
|
|
|
return 0;
|
|
|
|
err_add_host:
|
|
pm_runtime_disable(&pdev->dev);
|
|
pm_runtime_put_noidle(&pdev->dev);
|
|
err_of_parse:
|
|
err_cd_req:
|
|
err_mbus_win:
|
|
clk_disable_unprepare(pxa->clk_io);
|
|
clk_disable_unprepare(pxa->clk_core);
|
|
err_clk_get:
|
|
sdhci_pltfm_free(pdev);
|
|
return ret;
|
|
}
|
|
|
|
static int 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 = sdhci_pltfm_priv(pltfm_host);
|
|
|
|
pm_runtime_get_sync(&pdev->dev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
pm_runtime_put_noidle(&pdev->dev);
|
|
|
|
sdhci_remove_host(host, 1);
|
|
|
|
clk_disable_unprepare(pxa->clk_io);
|
|
clk_disable_unprepare(pxa->clk_core);
|
|
|
|
sdhci_pltfm_free(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int sdhci_pxav3_suspend(struct device *dev)
|
|
{
|
|
int ret;
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
|
|
pm_runtime_get_sync(dev);
|
|
ret = sdhci_suspend_host(host);
|
|
pm_runtime_mark_last_busy(dev);
|
|
pm_runtime_put_autosuspend(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int sdhci_pxav3_resume(struct device *dev)
|
|
{
|
|
int ret;
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
|
|
pm_runtime_get_sync(dev);
|
|
ret = sdhci_resume_host(host);
|
|
pm_runtime_mark_last_busy(dev);
|
|
pm_runtime_put_autosuspend(dev);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static int sdhci_pxav3_runtime_suspend(struct device *dev)
|
|
{
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
int ret;
|
|
|
|
ret = sdhci_runtime_suspend_host(host);
|
|
if (ret)
|
|
return ret;
|
|
|
|
clk_disable_unprepare(pxa->clk_io);
|
|
if (!IS_ERR(pxa->clk_core))
|
|
clk_disable_unprepare(pxa->clk_core);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sdhci_pxav3_runtime_resume(struct device *dev)
|
|
{
|
|
struct sdhci_host *host = dev_get_drvdata(dev);
|
|
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
|
struct sdhci_pxa *pxa = sdhci_pltfm_priv(pltfm_host);
|
|
|
|
clk_prepare_enable(pxa->clk_io);
|
|
if (!IS_ERR(pxa->clk_core))
|
|
clk_prepare_enable(pxa->clk_core);
|
|
|
|
return sdhci_runtime_resume_host(host);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static const struct dev_pm_ops sdhci_pxav3_pmops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(sdhci_pxav3_suspend, sdhci_pxav3_resume)
|
|
SET_RUNTIME_PM_OPS(sdhci_pxav3_runtime_suspend,
|
|
sdhci_pxav3_runtime_resume, NULL)
|
|
};
|
|
|
|
#define SDHCI_PXAV3_PMOPS (&sdhci_pxav3_pmops)
|
|
|
|
#else
|
|
#define SDHCI_PXAV3_PMOPS NULL
|
|
#endif
|
|
|
|
static struct platform_driver sdhci_pxav3_driver = {
|
|
.driver = {
|
|
.name = "sdhci-pxav3",
|
|
.of_match_table = of_match_ptr(sdhci_pxav3_of_match),
|
|
.pm = SDHCI_PXAV3_PMOPS,
|
|
},
|
|
.probe = sdhci_pxav3_probe,
|
|
.remove = sdhci_pxav3_remove,
|
|
};
|
|
|
|
module_platform_driver(sdhci_pxav3_driver);
|
|
|
|
MODULE_DESCRIPTION("SDHCI driver for pxav3");
|
|
MODULE_AUTHOR("Marvell International Ltd.");
|
|
MODULE_LICENSE("GPL v2");
|
|
|