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Diffstat (limited to 'drivers/staging/gma500/psb_powermgmt.c')
-rw-r--r--drivers/staging/gma500/psb_powermgmt.c489
1 files changed, 0 insertions, 489 deletions
diff --git a/drivers/staging/gma500/psb_powermgmt.c b/drivers/staging/gma500/psb_powermgmt.c
deleted file mode 100644
index 1495415be6c7..000000000000
--- a/drivers/staging/gma500/psb_powermgmt.c
+++ /dev/null
@@ -1,489 +0,0 @@
-/**************************************************************************
- * Copyright (c) 2009, Intel Corporation.
- * All Rights Reserved.
-
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * Authors:
- * Benjamin Defnet <benjamin.r.defnet@intel.com>
- * Rajesh Poornachandran <rajesh.poornachandran@intel.com>
- * Massively reworked
- * Alan Cox <alan@linux.intel.com>
- */
-#include "psb_powermgmt.h"
-#include "psb_drv.h"
-#include "psb_reg.h"
-#include "psb_intel_reg.h"
-#include <linux/mutex.h>
-#include <linux/pm_runtime.h>
-
-static struct mutex power_mutex;
-
-/**
- * gma_power_init - initialise power manager
- * @dev: our device
- *
- * Set up for power management tracking of our hardware.
- */
-void gma_power_init(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
-
- dev_priv->apm_base = dev_priv->apm_reg & 0xffff;
- dev_priv->ospm_base &= 0xffff;
-
- dev_priv->display_power = true; /* We start active */
- dev_priv->display_count = 0; /* Currently no users */
- dev_priv->suspended = false; /* And not suspended */
- mutex_init(&power_mutex);
-
- if (!IS_MRST(dev)) {
- /* FIXME: wants further review */
- u32 gating = PSB_RSGX32(PSB_CR_CLKGATECTL);
- /* Disable 2D clock gating */
- gating &= ~3;
- gating |= 1;
- PSB_WSGX32(gating, PSB_CR_CLKGATECTL);
- PSB_RSGX32(PSB_CR_CLKGATECTL);
- }
-}
-
-/**
- * gma_power_uninit - end power manager
- * @dev: device to end for
- *
- * Undo the effects of gma_power_init
- */
-void gma_power_uninit(struct drm_device *dev)
-{
- mutex_destroy(&power_mutex);
- pm_runtime_disable(&dev->pdev->dev);
- pm_runtime_set_suspended(&dev->pdev->dev);
-}
-
-
-/**
- * save_display_registers - save registers lost on suspend
- * @dev: our DRM device
- *
- * Save the state we need in order to be able to restore the interface
- * upon resume from suspend
- */
-static int save_display_registers(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc;
- struct drm_connector *connector;
-
- /* Display arbitration control + watermarks */
- dev_priv->saveDSPARB = PSB_RVDC32(DSPARB);
- dev_priv->saveDSPFW1 = PSB_RVDC32(DSPFW1);
- dev_priv->saveDSPFW2 = PSB_RVDC32(DSPFW2);
- dev_priv->saveDSPFW3 = PSB_RVDC32(DSPFW3);
- dev_priv->saveDSPFW4 = PSB_RVDC32(DSPFW4);
- dev_priv->saveDSPFW5 = PSB_RVDC32(DSPFW5);
- dev_priv->saveDSPFW6 = PSB_RVDC32(DSPFW6);
- dev_priv->saveCHICKENBIT = PSB_RVDC32(DSPCHICKENBIT);
-
- /* Save crtc and output state */
- mutex_lock(&dev->mode_config.mutex);
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
- if (drm_helper_crtc_in_use(crtc))
- crtc->funcs->save(crtc);
- }
-
- list_for_each_entry(connector, &dev->mode_config.connector_list, head)
- connector->funcs->save(connector);
-
- mutex_unlock(&dev->mode_config.mutex);
- return 0;
-}
-
-/**
- * restore_display_registers - restore lost register state
- * @dev: our DRM device
- *
- * Restore register state that was lost during suspend and resume.
- */
-static int restore_display_registers(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- struct drm_crtc *crtc;
- struct drm_connector *connector;
-
- /* Display arbitration + watermarks */
- PSB_WVDC32(dev_priv->saveDSPARB, DSPARB);
- PSB_WVDC32(dev_priv->saveDSPFW1, DSPFW1);
- PSB_WVDC32(dev_priv->saveDSPFW2, DSPFW2);
- PSB_WVDC32(dev_priv->saveDSPFW3, DSPFW3);
- PSB_WVDC32(dev_priv->saveDSPFW4, DSPFW4);
- PSB_WVDC32(dev_priv->saveDSPFW5, DSPFW5);
- PSB_WVDC32(dev_priv->saveDSPFW6, DSPFW6);
- PSB_WVDC32(dev_priv->saveCHICKENBIT, DSPCHICKENBIT);
-
- /*make sure VGA plane is off. it initializes to on after reset!*/
- PSB_WVDC32(0x80000000, VGACNTRL);
-
- mutex_lock(&dev->mode_config.mutex);
- list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
- if (drm_helper_crtc_in_use(crtc))
- crtc->funcs->restore(crtc);
-
- list_for_each_entry(connector, &dev->mode_config.connector_list, head)
- connector->funcs->restore(connector);
-
- mutex_unlock(&dev->mode_config.mutex);
- return 0;
-}
-
-/**
- * power_down - power down the display island
- * @dev: our DRM device
- *
- * Power down the display interface of our device
- */
-static void power_down(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- u32 pwr_mask ;
- u32 pwr_sts;
-
- if (IS_MRST(dev)) {
- pwr_mask = PSB_PWRGT_DISPLAY_MASK;
- outl(pwr_mask, dev_priv->ospm_base + PSB_PM_SSC);
-
- while (true) {
- pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS);
- if ((pwr_sts & pwr_mask) == pwr_mask)
- break;
- else
- udelay(10);
- }
- dev_priv->display_power = false;
- }
-}
-
-
-/**
- * gma_suspend_display - suspend the display logic
- * @dev: our DRM device
- *
- * Suspend the display logic of the graphics interface
- */
-static void gma_suspend_display(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- int pp_stat;
-
- if (dev_priv->suspended)
- return;
-
- save_display_registers(dev);
-
- if (dev_priv->iLVDS_enable) {
- /*shutdown the panel*/
- PSB_WVDC32(0, PP_CONTROL);
-
- do {
- pp_stat = PSB_RVDC32(PP_STATUS);
- } while (pp_stat & 0x80000000);
-
- /*turn off the plane*/
- PSB_WVDC32(0x58000000, DSPACNTR);
- PSB_WVDC32(0, DSPASURF);/*trigger the plane disable*/
- /*wait ~4 ticks*/
- msleep(4);
-
- /*turn off pipe*/
- PSB_WVDC32(0x0, PIPEACONF);
- /*wait ~8 ticks*/
- msleep(8);
-
- /*turn off PLLs*/
- PSB_WVDC32(0, MRST_DPLL_A);
- } else {
- PSB_WVDC32(DPI_SHUT_DOWN, DPI_CONTROL_REG);
- PSB_WVDC32(0x0, PIPEACONF);
- PSB_WVDC32(0x2faf0000, BLC_PWM_CTL);
- while (REG_READ(0x70008) & 0x40000000);
- while ((PSB_RVDC32(GEN_FIFO_STAT_REG) & DPI_FIFO_EMPTY)
- != DPI_FIFO_EMPTY);
- PSB_WVDC32(0, DEVICE_READY_REG);
- /* turn off panel power */
- }
- power_down(dev);
-}
-
-/*
- * power_up
- *
- * Description: Restore power to the specified island(s) (powergating)
- */
-static void power_up(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- u32 pwr_mask = PSB_PWRGT_DISPLAY_MASK;
- u32 pwr_sts, pwr_cnt;
-
- if (IS_MRST(dev)) {
- pwr_cnt = inl(dev_priv->ospm_base + PSB_PM_SSC);
- pwr_cnt &= ~pwr_mask;
- outl(pwr_cnt, (dev_priv->ospm_base + PSB_PM_SSC));
-
- while (true) {
- pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS);
- if ((pwr_sts & pwr_mask) == 0)
- break;
- else
- udelay(10);
- }
- }
- dev_priv->suspended = false;
- dev_priv->display_power = true;
-}
-
-/**
- * gma_resume_display - resume display side logic
- *
- * Resume the display hardware restoring state and enabling
- * as necessary.
- */
-static void gma_resume_display(struct pci_dev *pdev)
-{
- struct drm_device *dev = pci_get_drvdata(pdev);
- struct drm_psb_private *dev_priv = dev->dev_private;
-
- if (dev_priv->suspended == false)
- return;
-
- /* turn on the display power island */
- power_up(dev);
-
- PSB_WVDC32(dev_priv->pge_ctl | _PSB_PGETBL_ENABLED, PSB_PGETBL_CTL);
- pci_write_config_word(pdev, PSB_GMCH_CTRL,
- dev_priv->gmch_ctrl | _PSB_GMCH_ENABLED);
-
- /* Don't reinitialize the GTT as it is unnecessary. The gtt is
- * stored in memory so it will automatically be restored. All
- * we need to do is restore the PGETBL_CTL which we already do
- * above.
- */
- /*psb_gtt_init(dev_priv->pg, 1);*/
-
- restore_display_registers(dev);
-}
-
-/**
- * gma_suspend_pci - suspend PCI side
- * @pdev: PCI device
- *
- * Perform the suspend processing on our PCI device state
- */
-static void gma_suspend_pci(struct pci_dev *pdev)
-{
- struct drm_device *dev = pci_get_drvdata(pdev);
- struct drm_psb_private *dev_priv = dev->dev_private;
- int bsm, vbt;
-
- if (dev_priv->suspended)
- return;
-
- pci_save_state(pdev);
- pci_read_config_dword(pdev, 0x5C, &bsm);
- dev_priv->saveBSM = bsm;
- pci_read_config_dword(pdev, 0xFC, &vbt);
- dev_priv->saveVBT = vbt;
- pci_read_config_dword(pdev, PSB_PCIx_MSI_ADDR_LOC, &dev_priv->msi_addr);
- pci_read_config_dword(pdev, PSB_PCIx_MSI_DATA_LOC, &dev_priv->msi_data);
-
- pci_disable_device(pdev);
- pci_set_power_state(pdev, PCI_D3hot);
-
- dev_priv->suspended = true;
-}
-
-/**
- * gma_resume_pci - resume helper
- * @dev: our PCI device
- *
- * Perform the resume processing on our PCI device state - rewrite
- * register state and re-enable the PCI device
- */
-static bool gma_resume_pci(struct pci_dev *pdev)
-{
- struct drm_device *dev = pci_get_drvdata(pdev);
- struct drm_psb_private *dev_priv = dev->dev_private;
- int ret;
-
- if (!dev_priv->suspended)
- return true;
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- pci_write_config_dword(pdev, 0x5c, dev_priv->saveBSM);
- pci_write_config_dword(pdev, 0xFC, dev_priv->saveVBT);
- /* retoring MSI address and data in PCIx space */
- pci_write_config_dword(pdev, PSB_PCIx_MSI_ADDR_LOC, dev_priv->msi_addr);
- pci_write_config_dword(pdev, PSB_PCIx_MSI_DATA_LOC, dev_priv->msi_data);
- ret = pci_enable_device(pdev);
-
- if (ret != 0)
- dev_err(&pdev->dev, "pci_enable failed: %d\n", ret);
- else
- dev_priv->suspended = false;
- return !dev_priv->suspended;
-}
-
-/**
- * gma_power_suspend - bus callback for suspend
- * @pdev: our PCI device
- * @state: suspend type
- *
- * Called back by the PCI layer during a suspend of the system. We
- * perform the necessary shut down steps and save enough state that
- * we can undo this when resume is called.
- */
-int gma_power_suspend(struct pci_dev *pdev, pm_message_t state)
-{
- struct drm_device *dev = pci_get_drvdata(pdev);
- struct drm_psb_private *dev_priv = dev->dev_private;
-
- mutex_lock(&power_mutex);
- if (!dev_priv->suspended) {
- if (dev_priv->display_count) {
- mutex_unlock(&power_mutex);
- return -EBUSY;
- }
- psb_irq_uninstall(dev);
- gma_suspend_display(dev);
- gma_suspend_pci(pdev);
- }
- mutex_unlock(&power_mutex);
- return 0;
-}
-
-
-/**
- * gma_power_resume - resume power
- * @pdev: PCI device
- *
- * Resume the PCI side of the graphics and then the displays
- */
-int gma_power_resume(struct pci_dev *pdev)
-{
- struct drm_device *dev = pci_get_drvdata(pdev);
-
- mutex_lock(&power_mutex);
- gma_resume_pci(pdev);
- gma_resume_display(pdev);
- psb_irq_preinstall(dev);
- psb_irq_postinstall(dev);
- mutex_unlock(&power_mutex);
- return 0;
-}
-
-
-
-/**
- * gma_power_is_on - returne true if power is on
- * @dev: our DRM device
- *
- * Returns true if the display island power is on at this moment
- */
-bool gma_power_is_on(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- return dev_priv->display_power;
-}
-
-
-/**
- * gma_power_begin - begin requiring power
- * @dev: our DRM device
- * @force_on: true to force power on
- *
- * Begin an action that requires the display power island is enabled.
- * We refcount the islands.
- *
- * FIXME: locking
- */
-bool gma_power_begin(struct drm_device *dev, bool force_on)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- int ret;
-
- /* Power already on ? */
- if (dev_priv->display_power) {
- dev_priv->display_count++;
- pm_runtime_get(&dev->pdev->dev);
- return true;
- }
- if (force_on == false)
- return false;
-
- /* Ok power up needed */
- ret = gma_resume_pci(dev->pdev);
- if (ret == 0) {
- psb_irq_preinstall(dev);
- psb_irq_postinstall(dev);
- pm_runtime_get(&dev->pdev->dev);
- dev_priv->display_count++;
- return true;
- }
- return false;
-}
-
-
-/**
- * gma_power_end - end use of power
- * @dev: Our DRM device
- *
- * Indicate that one of our gma_power_begin() requested periods when
- * the diplay island power is needed has completed.
- */
-void gma_power_end(struct drm_device *dev)
-{
- struct drm_psb_private *dev_priv = dev->dev_private;
- dev_priv->display_count--;
- WARN_ON(dev_priv->display_count < 0);
- pm_runtime_put(&dev->pdev->dev);
-}
-
-int psb_runtime_suspend(struct device *dev)
-{
- static pm_message_t dummy;
- return gma_power_suspend(to_pci_dev(dev), dummy);
-}
-
-int psb_runtime_resume(struct device *dev)
-{
- return 0;
-}
-
-int psb_runtime_idle(struct device *dev)
-{
- struct drm_device *drmdev = pci_get_drvdata(to_pci_dev(dev));
- struct drm_psb_private *dev_priv = drmdev->dev_private;
- if (dev_priv->display_count)
- return 0;
- else
- return 1;
-}
-
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