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ARM: tegra: core SoC enhancements for 3.12

Browse source 
This branch includes a number of enhancements to core SoC support for
 Tegra devices. The major new features are:
 
 * Adds a new CPU-power-gated cpuidle state for Tegra114.
 * Adds initial system suspend support for Tegra114, initially supporting
   just CPU-power-gating during suspend.
 * Adds "LP1" suspend mode support for all of Tegra20/30/114. This mode
   both gates CPU power, and places the DRAM into self-refresh mode.
 * A new DT-driven PCIe driver to Tegra20/30. The driver is also moved
   from arch/arm/mach-tegra/ to drivers/pci/host/.
 
 The PCIe driver work depends on the following tag from Thomas Petazzoni:
 git://git.infradead.org/linux-mvebu.git mis-3.12.2
 ... which is merged into the middle of this pull request.
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Merge tag 'tegra-for-3.12-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc

From: Stephen Warren:
ARM: tegra: core SoC enhancements for 3.12

This branch includes a number of enhancements to core SoC support for
Tegra devices. The major new features are:

* Adds a new CPU-power-gated cpuidle state for Tegra114.
* Adds initial system suspend support for Tegra114, initially supporting
  just CPU-power-gating during suspend.
* Adds "LP1" suspend mode support for all of Tegra20/30/114. This mode
  both gates CPU power, and places the DRAM into self-refresh mode.
* A new DT-driven PCIe driver to Tegra20/30. The driver is also moved
  from arch/arm/mach-tegra/ to drivers/pci/host/.

The PCIe driver work depends on the following tag from Thomas Petazzoni:
git://git.infradead.org/linux-mvebu.git mis-3.12.2
... which is merged into the middle of this pull request.

* tag 'tegra-for-3.12-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (33 commits)
  ARM: tegra: disable LP2 cpuidle state if PCIe is enabled
  MAINTAINERS: Add myself as Tegra PCIe maintainer
  PCI: tegra: set up PADS_REFCLK_CFG1
  PCI: tegra: Add Tegra 30 PCIe support
  PCI: tegra: Move PCIe driver to drivers/pci/host
  PCI: msi: add default MSI operations for !HAVE_GENERIC_HARDIRQS platforms
  ARM: tegra: add LP1 suspend support for Tegra114
  ARM: tegra: add LP1 suspend support for Tegra20
  ARM: tegra: add LP1 suspend support for Tegra30
  ARM: tegra: add common LP1 suspend support
  clk: tegra114: add LP1 suspend/resume support
  ARM: tegra: config the polarity of the request of sys clock
  ARM: tegra: add common resume handling code for LP1 resuming
  ARM: pci: add ->add_bus() and ->remove_bus() hooks to hw_pci
  of: pci: add registry of MSI chips
  PCI: Introduce new MSI chip infrastructure
  PCI: remove ARCH_SUPPORTS_MSI kconfig option
  PCI: use weak functions for MSI arch-specific functions
  ARM: tegra: unify Tegra's Kconfig a bit more
  ARM: tegra: remove the limitation that Tegra114 can't support suspend
  ...

Signed-off-by: Kevin Hilman <[email protected]>
This commit is contained in:
Kevin Hilman 2013-08-21 10:16:55 -07:00
commit bfa664f21b
60 changed files with 3521 additions and 1150 deletions
Download patch file Download diff file Expand all files Collapse all files

45
drivers/of/of_pci.c
View file

@ -89,3 +89,48 @@ int of_pci_parse_bus_range(struct device_node *node, struct resource *res)
return 0;
}
EXPORT_SYMBOL_GPL(of_pci_parse_bus_range);
#ifdef CONFIG_PCI_MSI
static LIST_HEAD(of_pci_msi_chip_list);
static DEFINE_MUTEX(of_pci_msi_chip_mutex);
int of_pci_msi_chip_add(struct msi_chip *chip)
{
if (!of_property_read_bool(chip->of_node, "msi-controller"))
return -EINVAL;
mutex_lock(&of_pci_msi_chip_mutex);
list_add(&chip->list, &of_pci_msi_chip_list);
mutex_unlock(&of_pci_msi_chip_mutex);
return 0;
}
EXPORT_SYMBOL_GPL(of_pci_msi_chip_add);
void of_pci_msi_chip_remove(struct msi_chip *chip)
{
mutex_lock(&of_pci_msi_chip_mutex);
list_del(&chip->list);
mutex_unlock(&of_pci_msi_chip_mutex);
}
EXPORT_SYMBOL_GPL(of_pci_msi_chip_remove);
struct msi_chip *of_pci_find_msi_chip_by_node(struct device_node *of_node)
{
struct msi_chip *c;
mutex_lock(&of_pci_msi_chip_mutex);
list_for_each_entry(c, &of_pci_msi_chip_list, list) {
if (c->of_node == of_node) {
mutex_unlock(&of_pci_msi_chip_mutex);
return c;
}
}
mutex_unlock(&of_pci_msi_chip_mutex);
return NULL;
}
EXPORT_SYMBOL_GPL(of_pci_find_msi_chip_by_node);
#endif /* CONFIG_PCI_MSI */