blob: 24bb09fdc5fdd71847bfa70084e772b680ad466a [file] [log] [blame]
/*
* Copyright (C) 2016 Marek Vasut <marex@denx.de>
*
* This code is based on drivers/video/fbdev/mxsfb.c :
* Copyright (C) 2010 Juergen Beisert, Pengutronix
* Copyright (C) 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright (C) 2008 Embedded Alley Solutions, Inc All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that 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.
*/
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/component.h>
#include <linux/list.h>
#include <linux/of_device.h>
#include <linux/of_graph.h>
#include <linux/of_reserved_mem.h>
#include <linux/pm_runtime.h>
#include <linux/reservation.h>
#include <linux/version.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_simple_kms_helper.h>
#include "mxsfb_drv.h"
#include "mxsfb_regs.h"
/* The eLCDIF max possible CRTCs */
#define MAX_CRTCS 1
/* Maximum Video PLL frequency */
#define MAX_PLL_FREQ 1200000000
/* Mininum pixel clock in Hz */
#define MIN_PIX_CLK 74250000
enum mxsfb_devtype {
MXSFB_V3,
MXSFB_V4,
};
/*
* When adding new formats, make sure to update the num_formats from
* mxsfb_devdata below.
*/
static const uint32_t mxsfb_formats[] = {
/* MXSFB_V3 */
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_RGB565,
/* MXSFB_V4 */
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_RGBX8888,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_ABGR1555,
DRM_FORMAT_XBGR1555,
DRM_FORMAT_BGR565
};
static const struct mxsfb_devdata mxsfb_devdata[] = {
[MXSFB_V3] = {
.transfer_count = LCDC_V3_TRANSFER_COUNT,
.cur_buf = LCDC_V3_CUR_BUF,
.next_buf = LCDC_V3_NEXT_BUF,
.debug0 = LCDC_V3_DEBUG0,
.hs_wdth_mask = 0xff,
.hs_wdth_shift = 24,
.ipversion = 3,
.flags = MXSFB_FLAG_NULL,
.num_formats = 3,
},
[MXSFB_V4] = {
.transfer_count = LCDC_V4_TRANSFER_COUNT,
.cur_buf = LCDC_V4_CUR_BUF,
.next_buf = LCDC_V4_NEXT_BUF,
.debug0 = LCDC_V4_DEBUG0,
.hs_wdth_mask = 0x3fff,
.hs_wdth_shift = 18,
.ipversion = 4,
.flags = MXSFB_FLAG_BUSFREQ,
.num_formats = ARRAY_SIZE(mxsfb_formats),
},
};
static struct mxsfb_drm_private *
drm_pipe_to_mxsfb_drm_private(struct drm_simple_display_pipe *pipe)
{
return container_of(pipe, struct mxsfb_drm_private, pipe);
}
/**
* mxsfb_atomic_helper_check - validate state object
* @dev: DRM device
* @state: the driver state object
*
* On top of the drm imlementation drm_atomic_helper_check,
* check if the bpp is changed, if so, signal mode_changed,
* this will trigger disable/enable
*
* RETURNS:
* Zero for success or -errno
*/
static int mxsfb_atomic_helper_check(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int i, ret;
ret = drm_atomic_helper_check(dev, state);
if (ret)
return ret;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
struct drm_plane_state *primary_state;
int old_bpp = 0;
int new_bpp = 0;
if (!crtc->primary || !crtc->primary->old_fb)
continue;
primary_state =
drm_atomic_get_plane_state(state, crtc->primary);
if (!primary_state || !primary_state->fb)
continue;
old_bpp = crtc->primary->old_fb->format->depth;
new_bpp = primary_state->fb->format->depth;
if (old_bpp != new_bpp) {
crtc_state->mode_changed = true;
DRM_DEBUG_ATOMIC(
"[CRTC:%d:%s] mode changed, bpp %d->%d\n",
crtc->base.id, crtc->name, old_bpp, new_bpp);
}
}
return ret;
}
static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = {
.fb_create = drm_fb_cma_create,
.atomic_check = mxsfb_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static const struct drm_mode_config_helper_funcs mxsfb_mode_config_helpers = {
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
};
static struct clk *mxsfb_find_src_clk(struct mxsfb_drm_private *mxsfb,
int crtc_clock,
unsigned long *out_rate)
{
struct clk *src = NULL;
struct clk *p = mxsfb->clk;
struct clk *src_clk[MAX_CLK_SRC];
int num_src_clk = ARRAY_SIZE(mxsfb->clk_src);
unsigned long src_rate;
int i;
for (i = 0; i < num_src_clk; i++)
src_clk[i] = mxsfb->clk_src[i];
/*
* First, check the current clock source and find the clock
* selector
*/
while (p) {
struct clk *pp = clk_get_parent(p);
for (i = 0; i < num_src_clk; i++)
if (src_clk[i] && clk_is_match(pp, src_clk[i])) {
src = pp;
mxsfb->clk_sel = p;
src_clk[i] = NULL;
break;
}
if (src)
break;
p = pp;
}
while (!IS_ERR_OR_NULL(src)) {
/* Check if current rate satisfies our needs */
src_rate = clk_get_rate(src);
*out_rate = clk_get_rate(mxsfb->clk_pll);
if (!(*out_rate % crtc_clock))
break;
/* Find the highest rate that fits our needs */
*out_rate = crtc_clock * (MAX_PLL_FREQ / crtc_clock);
if (!(*out_rate % src_rate))
break;
/* Get the next clock source available */
src = NULL;
for (i = 0; i < num_src_clk; i++) {
if (IS_ERR_OR_NULL(src_clk[i]))
continue;
src = src_clk[i];
src_clk[i] = NULL;
break;
}
}
return src;
}
static enum drm_mode_status
mxsfb_pipe_mode_valid(struct drm_crtc *crtc,
const struct drm_display_mode *mode)
{
struct drm_simple_display_pipe *pipe =
container_of(crtc, struct drm_simple_display_pipe, crtc);
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
struct clk *src = NULL;
int clock = mode->clock * 1000;
int crtc_clock = mode->crtc_clock * 1000;
unsigned long out_rate;
struct mode_config *config;
/*
* In order to verify possible clock sources we need to have at least
* two of them.
*/
if (!mxsfb->clk_src[0] || !mxsfb->clk_src[1])
return MODE_OK;
/*
* TODO: Currently, only modes with pixel clock higher or equal to
* 74250kHz are working. Limit to these modes until we figure out how
* to handle the rest of the display modes.
*/
if (clock < MIN_PIX_CLK)
return MODE_NOCLOCK;
if (!crtc_clock)
crtc_clock = clock;
DRM_DEV_DEBUG_DRIVER(mxsfb->dev, "Validating mode:\n");
drm_mode_debug_printmodeline(mode);
/* Skip saving the config again */
list_for_each_entry(config, &mxsfb->valid_modes, list)
if (config->clock == clock)
return MODE_OK;
src = mxsfb_find_src_clk(mxsfb, crtc_clock, &out_rate);
if (IS_ERR_OR_NULL(src))
return MODE_NOCLOCK;
clk_set_rate(mxsfb->clk_pll, out_rate);
/* Save this configuration for later use */
config = devm_kzalloc(mxsfb->dev,
sizeof(struct mode_config), GFP_KERNEL);
config->clk_src = src;
config->out_rate = out_rate;
config->clock = clock;
config->mode_clock = crtc_clock;
list_add(&config->list, &mxsfb->valid_modes);
return MODE_OK;
}
static int mxsfb_pipe_check(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state,
struct drm_crtc_state *crtc_state)
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
struct drm_display_mode *mode = &crtc_state->mode;
struct mode_config *config;
struct clk *src;
DRM_DEV_DEBUG_DRIVER(mxsfb->dev, "Checking mode:\n");
drm_mode_debug_printmodeline(mode);
/* Make sure that current mode can get the required clock */
list_for_each_entry(config, &mxsfb->valid_modes, list)
if (config->clock == mode->clock * 1000) {
src = clk_get_parent(mxsfb->clk_sel);
if (!clk_is_match(src, config->clk_src))
clk_set_parent(mxsfb->clk_sel, config->clk_src);
if (clk_get_rate(mxsfb->clk_pll) != config->out_rate)
clk_set_rate(mxsfb->clk_pll, config->out_rate);
DRM_DEV_DEBUG_DRIVER(mxsfb->dev,
"pll rate: %ld (actual %ld)\n",
config->out_rate, clk_get_rate(mxsfb->clk_pll));
break;
}
return 0;
}
static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe,
struct drm_crtc_state *crtc_state)
{
struct drm_device *drm = pipe->encoder.dev;
struct drm_connector *connector;
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
if (!mxsfb->connector) {
list_for_each_entry(connector,
&drm->mode_config.connector_list,
head)
if (connector->encoder == &(mxsfb->pipe.encoder)) {
mxsfb->connector = connector;
break;
}
}
if (!mxsfb->connector) {
dev_warn(drm->dev, "No connector attached, using default\n");
mxsfb->connector = &mxsfb->panel_connector;
}
drm_crtc_vblank_on(&mxsfb->pipe.crtc);
pm_runtime_get_sync(drm->dev);
drm_panel_prepare(mxsfb->panel);
mxsfb_crtc_enable(mxsfb);
drm_panel_enable(mxsfb->panel);
}
static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe)
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
struct drm_device *drm = pipe->plane.dev;
struct drm_crtc *crtc = &pipe->crtc;
struct drm_pending_vblank_event *event;
drm_panel_disable(mxsfb->panel);
mxsfb_crtc_disable(mxsfb);
drm_panel_unprepare(mxsfb->panel);
pm_runtime_put_sync(drm->dev);
spin_lock_irq(&drm->event_lock);
event = crtc->state->event;
if (event) {
crtc->state->event = NULL;
drm_crtc_send_vblank_event(crtc, event);
}
spin_unlock_irq(&drm->event_lock);
if (mxsfb->connector != &mxsfb->panel_connector)
mxsfb->connector = NULL;
}
static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state)
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
mxsfb_plane_atomic_update(mxsfb, plane_state);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
static int mxsfb_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state)
{
return drm_fb_cma_prepare_fb(&pipe->plane, plane_state);
}
#endif
static struct drm_simple_display_pipe_funcs mxsfb_funcs = {
.mode_valid = mxsfb_pipe_mode_valid,
.check = mxsfb_pipe_check,
.enable = mxsfb_pipe_enable,
.disable = mxsfb_pipe_disable,
.update = mxsfb_pipe_update,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
.prepare_fb = mxsfb_pipe_prepare_fb,
#endif
};
static int mxsfb_load(struct drm_device *drm, unsigned long flags)
{
struct platform_device *pdev = to_platform_device(drm->dev);
struct mxsfb_drm_private *mxsfb;
struct resource *res;
u32 max_res[2] = {0, 0};
int ret;
mxsfb = devm_kzalloc(&pdev->dev, sizeof(*mxsfb), GFP_KERNEL);
if (!mxsfb)
return -ENOMEM;
drm->dev_private = mxsfb;
mxsfb->devdata = &mxsfb_devdata[pdev->id_entry->driver_data];
mxsfb->dev = &pdev->dev;
platform_set_drvdata(pdev, drm);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mxsfb->base = devm_ioremap_resource(drm->dev, res);
if (IS_ERR(mxsfb->base))
return PTR_ERR(mxsfb->base);
mxsfb->clk = devm_clk_get(drm->dev, "pix");
if (IS_ERR(mxsfb->clk))
return PTR_ERR(mxsfb->clk);
mxsfb->clk_axi = devm_clk_get(drm->dev, "axi");
if (IS_ERR(mxsfb->clk_axi))
mxsfb->clk_axi = NULL;
mxsfb->clk_disp_axi = devm_clk_get(drm->dev, "disp_axi");
if (IS_ERR(mxsfb->clk_disp_axi))
mxsfb->clk_disp_axi = NULL;
mxsfb->clk_pll = devm_clk_get(drm->dev, "video_pll");
if (IS_ERR(mxsfb->clk_pll))
mxsfb->clk_pll = NULL;
mxsfb->clk_src[0] = devm_clk_get(drm->dev, "osc_25");
if (IS_ERR(mxsfb->clk_src[0]))
mxsfb->clk_src[0] = NULL;
mxsfb->clk_src[1] = devm_clk_get(drm->dev, "osc_27");
if (IS_ERR(mxsfb->clk_src[1]))
mxsfb->clk_src[1] = NULL;
INIT_LIST_HEAD(&mxsfb->valid_modes);
ret = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
ret = drm_vblank_init(drm, MAX_CRTCS);
if (ret < 0) {
dev_err(drm->dev, "Failed to initialise vblank\n");
return ret;
}
/* Modeset init */
drm_mode_config_init(drm);
ret = mxsfb_create_output(drm);
if (ret < 0) {
dev_err(drm->dev, "Failed to create outputs\n");
return ret;
}
ret = drm_simple_display_pipe_init(drm, &mxsfb->pipe, &mxsfb_funcs,
mxsfb_formats, mxsfb->devdata->num_formats, NULL,
mxsfb->connector);
if (ret < 0) {
dev_err(drm->dev, "Cannot setup simple display pipe\n");
return ret;
}
drm_crtc_vblank_off(&mxsfb->pipe.crtc);
/*
* Attach panel only if there is one.
* If there is no panel attach, it must be a bridge. In this case, we
* need a reference to its connector for a proper initialization.
* We will do this check in pipe->enable(), since the connector won't
* be attached to an encoder until then.
*/
if (mxsfb->panel) {
ret = drm_panel_attach(mxsfb->panel, mxsfb->connector);
if (ret) {
dev_err(drm->dev, "Cannot connect panel\n");
return ret;
}
} else if (mxsfb->bridge) {
ret = drm_simple_display_pipe_attach_bridge(&mxsfb->pipe,
mxsfb->bridge);
if (ret) {
dev_err(drm->dev, "Cannot connect bridge\n");
return ret;
}
}
of_property_read_u32_array(drm->dev->of_node, "max-res",
&max_res[0], 2);
if (!max_res[0])
max_res[0] = MXSFB_MAX_XRES;
if (!max_res[1])
max_res[1] = MXSFB_MAX_YRES;
drm->mode_config.min_width = MXSFB_MIN_XRES;
drm->mode_config.min_height = MXSFB_MIN_YRES;
drm->mode_config.max_width = max_res[0];
drm->mode_config.max_height = max_res[1];
drm->mode_config.funcs = &mxsfb_mode_config_funcs;
drm->mode_config.helper_private = &mxsfb_mode_config_helpers;
drm_mode_config_reset(drm);
ret = drm_irq_install(drm, platform_get_irq(pdev, 0));
if (ret < 0) {
dev_err(drm->dev, "Failed to install IRQ handler\n");
goto err_irq;
}
drm_kms_helper_poll_init(drm);
mxsfb->fbdev = drm_fbdev_cma_init(drm, 32,
drm->mode_config.num_connector);
if (IS_ERR(mxsfb->fbdev)) {
ret = PTR_ERR(mxsfb->fbdev);
mxsfb->fbdev = NULL;
dev_err(drm->dev, "Failed to init FB CMA area\n");
goto err_cma;
}
drm_helper_hpd_irq_event(drm);
pm_runtime_enable(drm->dev);
return 0;
err_cma:
drm_irq_uninstall(drm);
err_irq:
drm_panel_detach(mxsfb->panel);
return ret;
}
static void mxsfb_unload(struct drm_device *drm)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
struct mode_config *config;
struct list_head *pos, *tmp;
if (mxsfb->fbdev)
drm_fbdev_cma_fini(mxsfb->fbdev);
drm_kms_helper_poll_fini(drm);
drm_mode_config_cleanup(drm);
pm_runtime_get_sync(drm->dev);
drm_irq_uninstall(drm);
pm_runtime_put_sync(drm->dev);
list_for_each_safe(pos, tmp, &mxsfb->valid_modes) {
config = list_entry(pos, struct mode_config, list);
list_del(pos);
devm_kfree(mxsfb->dev, config);
}
drm->dev_private = NULL;
pm_runtime_disable(drm->dev);
}
static void mxsfb_lastclose(struct drm_device *drm)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
drm_fbdev_cma_restore_mode(mxsfb->fbdev);
}
static int mxsfb_enable_vblank(struct drm_device *drm, unsigned int crtc)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
int ret = 0;
ret = clk_prepare_enable(mxsfb->clk_axi);
if (ret)
return ret;
/* Clear and enable VBLANK IRQ */
writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_SET);
clk_disable_unprepare(mxsfb->clk_axi);
return ret;
}
static void mxsfb_disable_vblank(struct drm_device *drm, unsigned int crtc)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
if (clk_prepare_enable(mxsfb->clk_axi))
return;
/* Disable and clear VBLANK IRQ */
writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_CLR);
writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
clk_disable_unprepare(mxsfb->clk_axi);
}
static void mxsfb_irq_preinstall(struct drm_device *drm)
{
mxsfb_disable_vblank(drm, 0);
}
static irqreturn_t mxsfb_irq_handler(int irq, void *data)
{
struct drm_device *drm = data;
struct mxsfb_drm_private *mxsfb = drm->dev_private;
u32 reg;
clk_prepare_enable(mxsfb->clk_axi);
reg = readl(mxsfb->base + LCDC_CTRL1);
if (reg & CTRL1_CUR_FRAME_DONE_IRQ)
drm_crtc_handle_vblank(&mxsfb->pipe.crtc);
writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
clk_disable_unprepare(mxsfb->clk_axi);
return IRQ_HANDLED;
}
DEFINE_DRM_GEM_CMA_FOPS(fops);
static struct drm_driver mxsfb_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET |
DRIVER_PRIME | DRIVER_ATOMIC |
DRIVER_HAVE_IRQ,
.lastclose = mxsfb_lastclose,
.irq_handler = mxsfb_irq_handler,
.irq_preinstall = mxsfb_irq_preinstall,
.irq_uninstall = mxsfb_irq_preinstall,
.enable_vblank = mxsfb_enable_vblank,
.disable_vblank = mxsfb_disable_vblank,
.gem_free_object_unlocked = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = drm_gem_cma_dumb_create,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
.gem_prime_vmap = drm_gem_cma_prime_vmap,
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
.gem_prime_mmap = drm_gem_cma_prime_mmap,
.fops = &fops,
.name = "mxsfb-drm",
.desc = "MXSFB Controller DRM",
.date = "20160824",
.major = 1,
.minor = 0,
};
static const struct platform_device_id mxsfb_devtype[] = {
{ .name = "imx23-fb", .driver_data = MXSFB_V3, },
{ .name = "imx28-fb", .driver_data = MXSFB_V4, },
{ .name = "imx6sx-fb", .driver_data = MXSFB_V4, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, mxsfb_devtype);
static const struct of_device_id mxsfb_dt_ids[] = {
{ .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devtype[0], },
{ .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devtype[1], },
{ .compatible = "fsl,imx6sx-lcdif", .data = &mxsfb_devtype[2], },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxsfb_dt_ids);
static int mxsfb_probe(struct platform_device *pdev)
{
struct drm_device *drm;
const struct of_device_id *of_id =
of_match_device(mxsfb_dt_ids, &pdev->dev);
int ret;
if (!pdev->dev.of_node)
return -ENODEV;
if (of_id)
pdev->id_entry = of_id->data;
drm = drm_dev_alloc(&mxsfb_driver, &pdev->dev);
if (IS_ERR(drm))
return PTR_ERR(drm);
ret = mxsfb_load(drm, 0);
if (ret)
goto err_free;
ret = drm_dev_register(drm, 0);
if (ret)
goto err_unload;
return 0;
err_unload:
mxsfb_unload(drm);
err_free:
drm_dev_unref(drm);
return ret;
}
static int mxsfb_remove(struct platform_device *pdev)
{
struct drm_device *drm = platform_get_drvdata(pdev);
drm_dev_unregister(drm);
mxsfb_unload(drm);
drm_dev_unref(drm);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int mxsfb_suspend(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
return drm_mode_config_helper_suspend(drm);
}
static int mxsfb_resume(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
return drm_mode_config_helper_resume(drm);
}
#endif
static const struct dev_pm_ops mxsfb_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(mxsfb_suspend, mxsfb_resume)
};
static struct platform_driver mxsfb_platform_driver = {
.probe = mxsfb_probe,
.remove = mxsfb_remove,
.id_table = mxsfb_devtype,
.driver = {
.name = "mxsfb_drm",
.of_match_table = mxsfb_dt_ids,
.pm = &mxsfb_pm_ops,
},
};
module_platform_driver(mxsfb_platform_driver);
MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
MODULE_DESCRIPTION("Freescale MXS DRM/KMS driver");
MODULE_LICENSE("GPL");