cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/ast/ast_drv.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 */
/*
 * Authors: Dave Airlie <airlied@redhat.com>
 */
#include <linux/module.h>
#include <linux/console.h>

#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>

#include "ast_drv.h"


int ast_modeset = -1;

MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, ast_modeset, int, 0400);


#define PCI_VENDOR_ASPEED 0x1a03


static struct drm_driver driver;


#define AST_VGA_DEVICE(id, info) {               \
        .class = PCI_BASE_CLASS_DISPLAY << 16,  \
        .class_mask = 0xff0000,                 \
        .vendor = PCI_VENDOR_ASPEED,                    \
        .device = id,                           \
        .subvendor = PCI_ANY_ID,                \
        .subdevice = PCI_ANY_ID,                \
        .driver_data = (unsigned long) info }


static const struct pci_device_id pciidlist[] = {
	AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
	AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
	/*      AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
	{0, 0, 0},
};

MODULE_DEVICE_TABLE(pci, pciidlist);


static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { return drm_get_pci_dev(pdev, ent, &driver); }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie28100.00%1100.00%
Total28100.00%1100.00%


static void ast_pci_remove(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); drm_put_dev(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie26100.00%1100.00%
Total26100.00%1100.00%


static int ast_drm_freeze(struct drm_device *dev) { drm_kms_helper_poll_disable(dev); pci_save_state(dev->pdev); console_lock(); ast_fbdev_set_suspend(dev, 1); console_unlock(); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie39100.00%1100.00%
Total39100.00%1100.00%


static int ast_drm_thaw(struct drm_device *dev) { int error = 0; ast_post_gpu(dev); drm_mode_config_reset(dev); drm_helper_resume_force_mode(dev); console_lock(); ast_fbdev_set_suspend(dev, 0); console_unlock(); return error; }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie47100.00%1100.00%
Total47100.00%1100.00%


static int ast_drm_resume(struct drm_device *dev) { int ret; if (pci_enable_device(dev->pdev)) return -EIO; ret = ast_drm_thaw(dev); if (ret) return ret; drm_kms_helper_poll_enable(dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie49100.00%1100.00%
Total49100.00%1100.00%


static int ast_pm_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); int error; error = ast_drm_freeze(ddev); if (error) return error; pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; }

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Dave Airlie63100.00%1100.00%
Total63100.00%1100.00%


static int ast_pm_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); return ast_drm_resume(ddev); }

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Dave Airlie37100.00%1100.00%
Total37100.00%1100.00%


static int ast_pm_freeze(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); if (!ddev || !ddev->dev_private) return -ENODEV; return ast_drm_freeze(ddev); }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie51100.00%1100.00%
Total51100.00%1100.00%


static int ast_pm_thaw(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); return ast_drm_thaw(ddev); }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie37100.00%1100.00%
Total37100.00%1100.00%


static int ast_pm_poweroff(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *ddev = pci_get_drvdata(pdev); return ast_drm_freeze(ddev); }

Contributors

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Dave Airlie37100.00%1100.00%
Total37100.00%1100.00%

static const struct dev_pm_ops ast_pm_ops = { .suspend = ast_pm_suspend, .resume = ast_pm_resume, .freeze = ast_pm_freeze, .thaw = ast_pm_thaw, .poweroff = ast_pm_poweroff, .restore = ast_pm_resume, }; static struct pci_driver ast_pci_driver = { .name = DRIVER_NAME, .id_table = pciidlist, .probe = ast_pci_probe, .remove = ast_pci_remove, .driver.pm = &ast_pm_ops, }; static const struct file_operations ast_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, .mmap = ast_mmap, .poll = drm_poll, .compat_ioctl = drm_compat_ioctl, .read = drm_read, }; static struct drm_driver driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM, .load = ast_driver_load, .unload = ast_driver_unload, .set_busid = drm_pci_set_busid, .fops = &ast_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, .gem_free_object_unlocked = ast_gem_free_object, .dumb_create = ast_dumb_create, .dumb_map_offset = ast_dumb_mmap_offset, .dumb_destroy = drm_gem_dumb_destroy, };
static int __init ast_init(void) { if (vgacon_text_force() && ast_modeset == -1) return -EINVAL; if (ast_modeset == 0) return -EINVAL; return drm_pci_init(&driver, &ast_pci_driver); }

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Dave Airlie43100.00%1100.00%
Total43100.00%1100.00%


static void __exit ast_exit(void) { drm_pci_exit(&driver, &ast_pci_driver); }

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PersonTokensPropCommitsCommitProp
Dave Airlie18100.00%1100.00%
Total18100.00%1100.00%

module_init(ast_init); module_exit(ast_exit); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL and additional rights");

Overall Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie78497.51%114.29%
Benoit Taine60.75%114.29%
David Herrmann50.62%114.29%
Keith Packard50.62%114.29%
David Howells20.25%114.29%
Daniel Vetter20.25%228.57%
Greg Kroah-Hartman0.00%00.00%
Total804100.00%7100.00%
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