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77a0122e08
A host controller for a SD card may need a GPIO for card detect in order
to wake up from runtime suspend when a card is inserted. If that GPIO is
not configured, then the host controller will not wake up. Fix that for
the affected devices by not enabling runtime PM unless the GPIO is
successfully set up.
This affects BYT sd card host controller which had runtime PM enabled from
v3.11. For completeness, the MFD sd card host controller is flagged also.
The original patch before rebasing (see link below) was tested on v3.11.10
and v3.12.4 although the patch applied with some offsets and fuzz. The
original patch is here:
http://marc.info/?l=linux-mmc&m=138676702327057
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable <stable@vger.kernel.org> # 3.11+
Signed-off-by: Chris Ball <chris@printf.net>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
#ifndef __SDHCI_PCI_H
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#define __SDHCI_PCI_H
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/*
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* PCI device IDs
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*/
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#define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809
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#define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a
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#define PCI_DEVICE_ID_INTEL_BYT_EMMC 0x0f14
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#define PCI_DEVICE_ID_INTEL_BYT_SDIO 0x0f15
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#define PCI_DEVICE_ID_INTEL_BYT_SD 0x0f16
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#define PCI_DEVICE_ID_INTEL_BYT_EMMC2 0x0f50
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#define PCI_DEVICE_ID_INTEL_MRFL_MMC 0x1190
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#define PCI_DEVICE_ID_INTEL_CLV_SDIO0 0x08f9
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#define PCI_DEVICE_ID_INTEL_CLV_SDIO1 0x08fa
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#define PCI_DEVICE_ID_INTEL_CLV_SDIO2 0x08fb
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#define PCI_DEVICE_ID_INTEL_CLV_EMMC0 0x08e5
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#define PCI_DEVICE_ID_INTEL_CLV_EMMC1 0x08e6
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/*
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* PCI registers
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*/
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#define PCI_SDHCI_IFPIO 0x00
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#define PCI_SDHCI_IFDMA 0x01
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#define PCI_SDHCI_IFVENDOR 0x02
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#define PCI_SLOT_INFO 0x40 /* 8 bits */
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#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
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#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
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#define MAX_SLOTS 8
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struct sdhci_pci_chip;
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struct sdhci_pci_slot;
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struct sdhci_pci_fixes {
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unsigned int quirks;
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unsigned int quirks2;
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bool allow_runtime_pm;
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bool own_cd_for_runtime_pm;
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int (*probe) (struct sdhci_pci_chip *);
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int (*probe_slot) (struct sdhci_pci_slot *);
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void (*remove_slot) (struct sdhci_pci_slot *, int);
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int (*suspend) (struct sdhci_pci_chip *);
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int (*resume) (struct sdhci_pci_chip *);
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};
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struct sdhci_pci_slot {
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struct sdhci_pci_chip *chip;
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struct sdhci_host *host;
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struct sdhci_pci_data *data;
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int pci_bar;
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int rst_n_gpio;
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int cd_gpio;
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int cd_irq;
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void (*hw_reset)(struct sdhci_host *host);
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};
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struct sdhci_pci_chip {
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struct pci_dev *pdev;
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unsigned int quirks;
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unsigned int quirks2;
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bool allow_runtime_pm;
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const struct sdhci_pci_fixes *fixes;
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int num_slots; /* Slots on controller */
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struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
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};
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#endif /* __SDHCI_PCI_H */
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