[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/mmc/host/sdhci-acpi.c b/src/kernel/linux/v4.14/drivers/mmc/host/sdhci-acpi.c
new file mode 100644
index 0000000..48cf430
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/mmc/host/sdhci-acpi.c
@@ -0,0 +1,639 @@
+/*
+ * Secure Digital Host Controller Interface ACPI driver.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/dma-mapping.h>
+#include <linux/compiler.h>
+#include <linux/stddef.h>
+#include <linux/bitops.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/acpi.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/delay.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/pm.h>
+#include <linux/mmc/slot-gpio.h>
+
+#ifdef CONFIG_X86
+#include <asm/cpu_device_id.h>
+#include <asm/intel-family.h>
+#include <asm/iosf_mbi.h>
+#include <linux/pci.h>
+#endif
+
+#include "sdhci.h"
+
+enum {
+ SDHCI_ACPI_SD_CD = BIT(0),
+ SDHCI_ACPI_RUNTIME_PM = BIT(1),
+ SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL = BIT(2),
+};
+
+struct sdhci_acpi_chip {
+ const struct sdhci_ops *ops;
+ unsigned int quirks;
+ unsigned int quirks2;
+ unsigned long caps;
+ unsigned int caps2;
+ mmc_pm_flag_t pm_caps;
+};
+
+struct sdhci_acpi_slot {
+ const struct sdhci_acpi_chip *chip;
+ unsigned int quirks;
+ unsigned int quirks2;
+ unsigned long caps;
+ unsigned int caps2;
+ mmc_pm_flag_t pm_caps;
+ unsigned int flags;
+ int (*probe_slot)(struct platform_device *, const char *, const char *);
+ int (*remove_slot)(struct platform_device *);
+};
+
+struct sdhci_acpi_host {
+ struct sdhci_host *host;
+ const struct sdhci_acpi_slot *slot;
+ struct platform_device *pdev;
+ bool use_runtime_pm;
+};
+
+static inline bool sdhci_acpi_flag(struct sdhci_acpi_host *c, unsigned int flag)
+{
+ return c->slot && (c->slot->flags & flag);
+}
+
+static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
+{
+ u8 reg;
+
+ reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
+ reg |= 0x10;
+ sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+ /* For eMMC, minimum is 1us but give it 9us for good measure */
+ udelay(9);
+ reg &= ~0x10;
+ sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
+ /* For eMMC, minimum is 200us but give it 300us for good measure */
+ usleep_range(300, 1000);
+}
+
+static const struct sdhci_ops sdhci_acpi_ops_dflt = {
+ .set_clock = sdhci_set_clock,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+};
+
+static const struct sdhci_ops sdhci_acpi_ops_int = {
+ .set_clock = sdhci_set_clock,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+ .hw_reset = sdhci_acpi_int_hw_reset,
+};
+
+static const struct sdhci_acpi_chip sdhci_acpi_chip_int = {
+ .ops = &sdhci_acpi_ops_int,
+};
+
+#ifdef CONFIG_X86
+
+static bool sdhci_acpi_byt(void)
+{
+ static const struct x86_cpu_id byt[] = {
+ { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT },
+ {}
+ };
+
+ return x86_match_cpu(byt);
+}
+
+static bool sdhci_acpi_cht(void)
+{
+ static const struct x86_cpu_id cht[] = {
+ { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_AIRMONT },
+ {}
+ };
+
+ return x86_match_cpu(cht);
+}
+
+#define BYT_IOSF_SCCEP 0x63
+#define BYT_IOSF_OCP_NETCTRL0 0x1078
+#define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8)
+
+static void sdhci_acpi_byt_setting(struct device *dev)
+{
+ u32 val = 0;
+
+ if (!sdhci_acpi_byt())
+ return;
+
+ if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
+ &val)) {
+ dev_err(dev, "%s read error\n", __func__);
+ return;
+ }
+
+ if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE))
+ return;
+
+ val &= ~BYT_IOSF_OCP_TIMEOUT_BASE;
+
+ if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0,
+ val)) {
+ dev_err(dev, "%s write error\n", __func__);
+ return;
+ }
+
+ dev_dbg(dev, "%s completed\n", __func__);
+}
+
+static bool sdhci_acpi_byt_defer(struct device *dev)
+{
+ if (!sdhci_acpi_byt())
+ return false;
+
+ if (!iosf_mbi_available())
+ return true;
+
+ sdhci_acpi_byt_setting(dev);
+
+ return false;
+}
+
+static bool sdhci_acpi_cht_pci_wifi(unsigned int vendor, unsigned int device,
+ unsigned int slot, unsigned int parent_slot)
+{
+ struct pci_dev *dev, *parent, *from = NULL;
+
+ while (1) {
+ dev = pci_get_device(vendor, device, from);
+ pci_dev_put(from);
+ if (!dev)
+ break;
+ parent = pci_upstream_bridge(dev);
+ if (ACPI_COMPANION(&dev->dev) && PCI_SLOT(dev->devfn) == slot &&
+ parent && PCI_SLOT(parent->devfn) == parent_slot &&
+ !pci_upstream_bridge(parent)) {
+ pci_dev_put(dev);
+ return true;
+ }
+ from = dev;
+ }
+
+ return false;
+}
+
+/*
+ * GPDwin uses PCI wifi which conflicts with SDIO's use of
+ * acpi_device_fix_up_power() on child device nodes. Identifying GPDwin is
+ * problematic, but since SDIO is only used for wifi, the presence of the PCI
+ * wifi card in the expected slot with an ACPI companion node, is used to
+ * indicate that acpi_device_fix_up_power() should be avoided.
+ */
+static inline bool sdhci_acpi_no_fixup_child_power(const char *hid,
+ const char *uid)
+{
+ return sdhci_acpi_cht() &&
+ !strcmp(hid, "80860F14") &&
+ !strcmp(uid, "2") &&
+ sdhci_acpi_cht_pci_wifi(0x14e4, 0x43ec, 0, 28);
+}
+
+#else
+
+static inline void sdhci_acpi_byt_setting(struct device *dev)
+{
+}
+
+static inline bool sdhci_acpi_byt_defer(struct device *dev)
+{
+ return false;
+}
+
+static inline bool sdhci_acpi_no_fixup_child_power(const char *hid,
+ const char *uid)
+{
+ return false;
+}
+
+#endif
+
+static int bxt_get_cd(struct mmc_host *mmc)
+{
+ int gpio_cd = mmc_gpio_get_cd(mmc);
+ struct sdhci_host *host = mmc_priv(mmc);
+ unsigned long flags;
+ int ret = 0;
+
+ if (!gpio_cd)
+ return 0;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ if (host->flags & SDHCI_DEVICE_DEAD)
+ goto out;
+
+ ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
+out:
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ return ret;
+}
+
+static int sdhci_acpi_emmc_probe_slot(struct platform_device *pdev,
+ const char *hid, const char *uid)
+{
+ struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
+ struct sdhci_host *host;
+
+ if (!c || !c->host)
+ return 0;
+
+ host = c->host;
+
+ /* Platform specific code during emmc probe slot goes here */
+
+ if (hid && uid && !strcmp(hid, "80860F14") && !strcmp(uid, "1") &&
+ sdhci_readl(host, SDHCI_CAPABILITIES) == 0x446cc8b2 &&
+ sdhci_readl(host, SDHCI_CAPABILITIES_1) == 0x00000807)
+ host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
+
+ return 0;
+}
+
+static int sdhci_acpi_sdio_probe_slot(struct platform_device *pdev,
+ const char *hid, const char *uid)
+{
+ struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
+
+ if (!c || !c->host)
+ return 0;
+
+ /* Platform specific code during sdio probe slot goes here */
+
+ return 0;
+}
+
+static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev,
+ const char *hid, const char *uid)
+{
+ struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
+ struct sdhci_host *host;
+
+ if (!c || !c->host || !c->slot)
+ return 0;
+
+ host = c->host;
+
+ /* Platform specific code during sd probe slot goes here */
+
+ if (hid && !strcmp(hid, "80865ACA"))
+ host->mmc_host_ops.get_cd = bxt_get_cd;
+
+ return 0;
+}
+
+static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
+ .chip = &sdhci_acpi_chip_int,
+ .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
+ MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
+ MMC_CAP_CMD_DURING_TFR | MMC_CAP_WAIT_WHILE_BUSY,
+ .flags = SDHCI_ACPI_RUNTIME_PM,
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
+ SDHCI_QUIRK2_STOP_WITH_TC |
+ SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400,
+ .probe_slot = sdhci_acpi_emmc_probe_slot,
+};
+
+static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {
+ .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+ SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
+ .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_POWER_OFF_CARD |
+ MMC_CAP_WAIT_WHILE_BUSY,
+ .flags = SDHCI_ACPI_RUNTIME_PM,
+ .pm_caps = MMC_PM_KEEP_POWER,
+ .probe_slot = sdhci_acpi_sdio_probe_slot,
+};
+
+static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
+ .flags = SDHCI_ACPI_SD_CD | SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL |
+ SDHCI_ACPI_RUNTIME_PM,
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
+ SDHCI_QUIRK2_STOP_WITH_TC,
+ .caps = MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_AGGRESSIVE_PM,
+ .probe_slot = sdhci_acpi_sd_probe_slot,
+};
+
+static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd_3v = {
+ .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION,
+ .quirks2 = SDHCI_QUIRK2_NO_1_8_V,
+ .caps = MMC_CAP_NONREMOVABLE,
+};
+
+static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd = {
+ .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION,
+ .caps = MMC_CAP_NONREMOVABLE,
+};
+
+struct sdhci_acpi_uid_slot {
+ const char *hid;
+ const char *uid;
+ const struct sdhci_acpi_slot *slot;
+};
+
+static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = {
+ { "80865ACA", NULL, &sdhci_acpi_slot_int_sd },
+ { "80865ACC", NULL, &sdhci_acpi_slot_int_emmc },
+ { "80865AD0", NULL, &sdhci_acpi_slot_int_sdio },
+ { "80860F14" , "1" , &sdhci_acpi_slot_int_emmc },
+ { "80860F14" , "2" , &sdhci_acpi_slot_int_sdio },
+ { "80860F14" , "3" , &sdhci_acpi_slot_int_sd },
+ { "80860F16" , NULL, &sdhci_acpi_slot_int_sd },
+ { "INT33BB" , "2" , &sdhci_acpi_slot_int_sdio },
+ { "INT33BB" , "3" , &sdhci_acpi_slot_int_sd },
+ { "INT33C6" , NULL, &sdhci_acpi_slot_int_sdio },
+ { "INT3436" , NULL, &sdhci_acpi_slot_int_sdio },
+ { "INT344D" , NULL, &sdhci_acpi_slot_int_sdio },
+ { "PNP0FFF" , "3" , &sdhci_acpi_slot_int_sd },
+ { "PNP0D40" },
+ { "QCOM8051", NULL, &sdhci_acpi_slot_qcom_sd_3v },
+ { "QCOM8052", NULL, &sdhci_acpi_slot_qcom_sd },
+ { },
+};
+
+static const struct acpi_device_id sdhci_acpi_ids[] = {
+ { "80865ACA" },
+ { "80865ACC" },
+ { "80865AD0" },
+ { "80860F14" },
+ { "80860F16" },
+ { "INT33BB" },
+ { "INT33C6" },
+ { "INT3436" },
+ { "INT344D" },
+ { "PNP0D40" },
+ { "QCOM8051" },
+ { "QCOM8052" },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids);
+
+static const struct sdhci_acpi_slot *sdhci_acpi_get_slot(const char *hid,
+ const char *uid)
+{
+ const struct sdhci_acpi_uid_slot *u;
+
+ for (u = sdhci_acpi_uids; u->hid; u++) {
+ if (strcmp(u->hid, hid))
+ continue;
+ if (!u->uid)
+ return u->slot;
+ if (uid && !strcmp(u->uid, uid))
+ return u->slot;
+ }
+ return NULL;
+}
+
+static int sdhci_acpi_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct acpi_device *device, *child;
+ struct sdhci_acpi_host *c;
+ struct sdhci_host *host;
+ struct resource *iomem;
+ resource_size_t len;
+ const char *hid;
+ const char *uid;
+ int err;
+
+ device = ACPI_COMPANION(dev);
+ if (!device)
+ return -ENODEV;
+
+ hid = acpi_device_hid(device);
+ uid = device->pnp.unique_id;
+
+ /* Power on the SDHCI controller and its children */
+ acpi_device_fix_up_power(device);
+ if (!sdhci_acpi_no_fixup_child_power(hid, uid)) {
+ list_for_each_entry(child, &device->children, node)
+ if (child->status.present && child->status.enabled)
+ acpi_device_fix_up_power(child);
+ }
+
+ if (sdhci_acpi_byt_defer(dev))
+ return -EPROBE_DEFER;
+
+ iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!iomem)
+ return -ENOMEM;
+
+ len = resource_size(iomem);
+ if (len < 0x100)
+ dev_err(dev, "Invalid iomem size!\n");
+
+ if (!devm_request_mem_region(dev, iomem->start, len, dev_name(dev)))
+ return -ENOMEM;
+
+ host = sdhci_alloc_host(dev, sizeof(struct sdhci_acpi_host));
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+
+ c = sdhci_priv(host);
+ c->host = host;
+ c->slot = sdhci_acpi_get_slot(hid, uid);
+ c->pdev = pdev;
+ c->use_runtime_pm = sdhci_acpi_flag(c, SDHCI_ACPI_RUNTIME_PM);
+
+ platform_set_drvdata(pdev, c);
+
+ host->hw_name = "ACPI";
+ host->ops = &sdhci_acpi_ops_dflt;
+ host->irq = platform_get_irq(pdev, 0);
+
+ host->ioaddr = devm_ioremap_nocache(dev, iomem->start,
+ resource_size(iomem));
+ if (host->ioaddr == NULL) {
+ err = -ENOMEM;
+ goto err_free;
+ }
+
+ if (c->slot) {
+ if (c->slot->probe_slot) {
+ err = c->slot->probe_slot(pdev, hid, uid);
+ if (err)
+ goto err_free;
+ }
+ if (c->slot->chip) {
+ host->ops = c->slot->chip->ops;
+ host->quirks |= c->slot->chip->quirks;
+ host->quirks2 |= c->slot->chip->quirks2;
+ host->mmc->caps |= c->slot->chip->caps;
+ host->mmc->caps2 |= c->slot->chip->caps2;
+ host->mmc->pm_caps |= c->slot->chip->pm_caps;
+ }
+ host->quirks |= c->slot->quirks;
+ host->quirks2 |= c->slot->quirks2;
+ host->mmc->caps |= c->slot->caps;
+ host->mmc->caps2 |= c->slot->caps2;
+ host->mmc->pm_caps |= c->slot->pm_caps;
+ }
+
+ host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
+
+ if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
+ bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL);
+
+ err = mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL);
+ if (err) {
+ if (err == -EPROBE_DEFER)
+ goto err_free;
+ dev_warn(dev, "failed to setup card detect gpio\n");
+ c->use_runtime_pm = false;
+ }
+ }
+
+ err = sdhci_add_host(host);
+ if (err)
+ goto err_free;
+
+ if (c->use_runtime_pm) {
+ pm_runtime_set_active(dev);
+ pm_suspend_ignore_children(dev, 1);
+ pm_runtime_set_autosuspend_delay(dev, 50);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_enable(dev);
+ }
+
+ device_enable_async_suspend(dev);
+
+ return 0;
+
+err_free:
+ sdhci_free_host(c->host);
+ return err;
+}
+
+static int sdhci_acpi_remove(struct platform_device *pdev)
+{
+ struct sdhci_acpi_host *c = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ int dead;
+
+ if (c->use_runtime_pm) {
+ pm_runtime_get_sync(dev);
+ pm_runtime_disable(dev);
+ pm_runtime_put_noidle(dev);
+ }
+
+ if (c->slot && c->slot->remove_slot)
+ c->slot->remove_slot(pdev);
+
+ dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0);
+ sdhci_remove_host(c->host, dead);
+ sdhci_free_host(c->host);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+
+static int sdhci_acpi_suspend(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+ struct sdhci_host *host = c->host;
+
+ if (host->tuning_mode != SDHCI_TUNING_MODE_3)
+ mmc_retune_needed(host->mmc);
+
+ return sdhci_suspend_host(host);
+}
+
+static int sdhci_acpi_resume(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+
+ sdhci_acpi_byt_setting(&c->pdev->dev);
+
+ return sdhci_resume_host(c->host);
+}
+
+#endif
+
+#ifdef CONFIG_PM
+
+static int sdhci_acpi_runtime_suspend(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+ struct sdhci_host *host = c->host;
+
+ if (host->tuning_mode != SDHCI_TUNING_MODE_3)
+ mmc_retune_needed(host->mmc);
+
+ return sdhci_runtime_suspend_host(host);
+}
+
+static int sdhci_acpi_runtime_resume(struct device *dev)
+{
+ struct sdhci_acpi_host *c = dev_get_drvdata(dev);
+
+ sdhci_acpi_byt_setting(&c->pdev->dev);
+
+ return sdhci_runtime_resume_host(c->host);
+}
+
+#endif
+
+static const struct dev_pm_ops sdhci_acpi_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sdhci_acpi_suspend, sdhci_acpi_resume)
+ SET_RUNTIME_PM_OPS(sdhci_acpi_runtime_suspend,
+ sdhci_acpi_runtime_resume, NULL)
+};
+
+static struct platform_driver sdhci_acpi_driver = {
+ .driver = {
+ .name = "sdhci-acpi",
+ .acpi_match_table = sdhci_acpi_ids,
+ .pm = &sdhci_acpi_pm_ops,
+ },
+ .probe = sdhci_acpi_probe,
+ .remove = sdhci_acpi_remove,
+};
+
+module_platform_driver(sdhci_acpi_driver);
+
+MODULE_DESCRIPTION("Secure Digital Host Controller Interface ACPI driver");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL v2");