Re: [PATCH v3 2/3] drm/arm: Add support for Mali Display Processors
From: Daniel Vetter
Date: Thu Jun 09 2016 - 14:56:42 EST
On Thu, Jun 09, 2016 at 05:18:18PM +0100, Liviu Dudau wrote:
> Add support for the new family of Display Processors from ARM Ltd.
> This commit adds basic support for Mali DP500, DP550 and DP650
> parts, with only the display engine being supported at the moment.
>
> Cc: David Brown <David.Brown@xxxxxxx>
> Cc: Brian Starkey <Brian.Starkey@xxxxxxx>
>
> Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx>
Bunch of drive-by comments below. Looks rather pretty overall \o/
Cheers, Daniel
> ---
> drivers/gpu/drm/arm/Kconfig | 16 +
> drivers/gpu/drm/arm/Makefile | 2 +
> drivers/gpu/drm/arm/malidp_crtc.c | 239 +++++++++++++
> drivers/gpu/drm/arm/malidp_drv.c | 500 ++++++++++++++++++++++++++
> drivers/gpu/drm/arm/malidp_drv.h | 48 +++
> drivers/gpu/drm/arm/malidp_hw.c | 691 ++++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/arm/malidp_hw.h | 241 +++++++++++++
> drivers/gpu/drm/arm/malidp_planes.c | 271 ++++++++++++++
> drivers/gpu/drm/arm/malidp_regs.h | 172 +++++++++
> 9 files changed, 2180 insertions(+)
> create mode 100644 drivers/gpu/drm/arm/malidp_crtc.c
> create mode 100644 drivers/gpu/drm/arm/malidp_drv.c
> create mode 100644 drivers/gpu/drm/arm/malidp_drv.h
> create mode 100644 drivers/gpu/drm/arm/malidp_hw.c
> create mode 100644 drivers/gpu/drm/arm/malidp_hw.h
> create mode 100644 drivers/gpu/drm/arm/malidp_planes.c
> create mode 100644 drivers/gpu/drm/arm/malidp_regs.h
>
> diff --git a/drivers/gpu/drm/arm/Kconfig b/drivers/gpu/drm/arm/Kconfig
> index eaed454..1b29065 100644
> --- a/drivers/gpu/drm/arm/Kconfig
> +++ b/drivers/gpu/drm/arm/Kconfig
> @@ -25,3 +25,19 @@ config DRM_HDLCD_SHOW_UNDERRUN
> Enable this option to show in red colour the pixels that the
> HDLCD device did not fetch from framebuffer due to underrun
> conditions.
> +
> +config DRM_MALI_DISPLAY
> + tristate "ARM Mali Display Processor"
> + depends on DRM && OF && (ARM || ARM64)
> + depends on COMMON_CLK
> + select DRM_ARM
> + select DRM_KMS_HELPER
> + select DRM_KMS_CMA_HELPER
> + select DRM_GEM_CMA_HELPER
> + select VIDEOMODE_HELPERS
> + help
> + Choose this option if you want to compile the ARM Mali Display
> + Processor driver. It supports the DP500, DP550 and DP650 variants
> + of the hardware.
> +
> + If compiled as a module it will be called mali-dp.
> diff --git a/drivers/gpu/drm/arm/Makefile b/drivers/gpu/drm/arm/Makefile
> index 89dcb7b..bb8b158 100644
> --- a/drivers/gpu/drm/arm/Makefile
> +++ b/drivers/gpu/drm/arm/Makefile
> @@ -1,2 +1,4 @@
> hdlcd-y := hdlcd_drv.o hdlcd_crtc.o
> obj-$(CONFIG_DRM_HDLCD) += hdlcd.o
> +mali-dp-y := malidp_drv.o malidp_hw.o malidp_planes.o malidp_crtc.o
> +obj-$(CONFIG_DRM_MALI_DISPLAY) += mali-dp.o
> diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c
> new file mode 100644
> index 0000000..21b71eb
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_crtc.c
> @@ -0,0 +1,239 @@
> +/*
> + * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
> + * Author: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP500/DP550/DP650 driver (crtc operations)
> + */
> +
> +#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 <linux/clk.h>
> +#include <video/videomode.h>
> +
> +#include "malidp_drv.h"
> +#include "malidp_hw.h"
> +
> +static bool malidp_crtc_mode_fixup(struct drm_crtc *crtc,
> + const struct drm_display_mode *mode,
> + struct drm_display_mode *adjusted_mode)
> +{
> + struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + /*
> + * check that the hardware can drive the required clock rate,
> + * but skip the check if the clock is meant to be disabled (req_rate = 0)
> + */
> + long rate, req_rate = mode->crtc_clock * 1000;
> +
> + if (req_rate) {
> + rate = clk_round_rate(hwdev->mclk, req_rate);
> + if (rate < req_rate) {
> + DRM_DEBUG_DRIVER("mclk clock unable to reach %d kHz\n",
> + mode->crtc_clock);
> + return false;
> + }
> +
> + rate = clk_round_rate(hwdev->pxlclk, req_rate);
> + if (rate != req_rate) {
> + DRM_DEBUG_DRIVER("pxlclk doesn't support %ld Hz\n",
> + req_rate);
> + return false;
> + }
> + }
> +
> + return true;
> +}
> +
> +static void malidp_crtc_enable(struct drm_crtc *crtc)
> +{
> + struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
> + struct malidp_hw_device *hwdev = malidp->dev;
> + struct videomode vm;
> +
> + drm_display_mode_to_videomode(&crtc->state->adjusted_mode, &vm);
> +
> + clk_prepare_enable(hwdev->pxlclk);
Note that nothing guarantees that ->disable is called before ->enable in
atomic helpers. This is the case when enabling a crtc when it is fully
disabled. Just mentioning in case ->enter_config_mode() is something that
must be called symmetrically with ->leave_config_mode().
> +
> + /* mclk needs to be set to the same or higher rate than pxlclk */
> + clk_set_rate(hwdev->mclk, crtc->state->adjusted_mode.crtc_clock * 1000);
> + clk_set_rate(hwdev->pxlclk, crtc->state->adjusted_mode.crtc_clock * 1000);
> +
> + hwdev->modeset(hwdev, &vm);
> + hwdev->leave_config_mode(hwdev);
> +}
> +
> +static void malidp_crtc_disable(struct drm_crtc *crtc)
> +{
> + struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + /*
> + * avoid disabling already disabled clocks and hardware
> + * (as is the case at device probe time)
> + */
> + if (crtc->state->active) {
Comment doesn't match code. Checking crtc->state->active in ->disable
looks at the _new_ state, not at the current state of the crtc. Atomic
helpers already guarantee you that ->disable is only called when the CRTC
is still on. I think you can remove this one, but see my comment above
about enter/leave_config_mode.
> + hwdev->enter_config_mode(hwdev);
> + clk_disable_unprepare(hwdev->pxlclk);
> + }
> +}
> +
> +static int malidp_crtc_atomic_check(struct drm_crtc *crtc,
> + struct drm_crtc_state *state)
> +{
> + struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
> + struct malidp_hw_device *hwdev = malidp->dev;
> + struct drm_plane *plane;
> + struct drm_plane_state *pstate;
> + u32 rot_mem_free, rot_mem_usable;
> + int rotated_planes = 0;
> +
> + /*
> + * check if there is enough rotation memory available for planes
> + * that need 90° and 270° rotation. Each plane has set its required
> + * memory size in the ->plane_check() callback, here we only make
> + * sure that the sums are less that the total usable memory.
> + *
> + * The rotation memory allocation algorithm (for each plane):
> + * a. If no more rotated planes exist, all remaining rotate
> + * memory in the bank is available for use by the plane.
> + * b. If other rotated planes exist, and plane's layer ID is
> + * DE_VIDEO1, it can use all the memory from first bank if
> + * secondary rotation memory bank is available, otherwise it can
> + * use up to half the bank's memory.
> + * c. If other rotated planes exist, and plane's layer ID is not
> + * DE_VIDEO1, it can use half of the available memory
> + *
> + * Note: this algorithm assumes that the order in which the planes are
> + * checked always has DE_VIDEO1 plane first in the list if it is
> + * rotated. Because that is how we create the planes in the first
> + * place, under current DRM version things work, but if ever the order
> + * in which drm_atomic_crtc_state_for_each_plane() iterates over planes
> + * changes, we need to pre-sort the planes before validation.
> + */
> +
> + /* first count the number of rotated planes */
> + drm_atomic_crtc_state_for_each_plane(plane, state) {
> + pstate = drm_atomic_get_plane_state(state->state, plane);
> + if (pstate->rotation & MALIDP_ROTATED_MASK)
> + rotated_planes++;
> + }
> +
> + rot_mem_free = hwdev->rotation_memory[0];
> + /*
> + * if we have more than 1 plane using rotation memory, use the second
> + * block of rotation memory as well
> + */
> + if (rotated_planes > 1)
> + rot_mem_free += hwdev->rotation_memory[1];
> +
> + /* now validate the rotation memory requirements */
> + drm_atomic_crtc_state_for_each_plane(plane, state) {
> + struct malidp_plane *mp = to_malidp_plane(plane);
> +
> + pstate = drm_atomic_get_plane_state(state->state, plane);
> + if (pstate->rotation & MALIDP_ROTATED_MASK) {
> + /* process current plane */
> + rotated_planes--;
> +
> + if (!rotated_planes) {
> + /* no more rotated planes, we can use what's left */
> + rot_mem_usable = rot_mem_free;
> + } else {
> + if ((mp->layer->id != DE_VIDEO1) ||
> + (hwdev->rotation_memory[1] == 0))
> + rot_mem_usable = rot_mem_free / 2;
> + else
> + rot_mem_usable = hwdev->rotation_memory[0];
> + }
> +
> + rot_mem_free -= rot_mem_usable;
> +
> + if (mp->rotmem_size > rot_mem_usable)
> + return -EINVAL;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static void malidp_crtc_atomic_flush(struct drm_crtc *crtc,
> + struct drm_crtc_state *old_state)
> +{
> + struct drm_pending_vblank_event *event = crtc->state->event;
> +
> + if (event) {
> + crtc->state->event = NULL;
> +
> + spin_lock_irq(&crtc->dev->event_lock);
> + if (drm_crtc_vblank_get(crtc) == 0)
> + drm_crtc_arm_vblank_event(crtc, event);
> + else
> + drm_crtc_send_vblank_event(crtc, event);
> + spin_unlock_irq(&crtc->dev->event_lock);
> + }
This copypasta is racy if you don't guarantee through some other means
that the vblank interrupt only happens together with the plane update. If
you don't have a hw vblank counter, you need to instead send the event
from an interrupt driven by your GO bit (or whatever it is malidp has to
make plane updates atomic.
> +}
> +
> +static const struct drm_crtc_helper_funcs malidp_crtc_helper_funcs = {
> + .mode_fixup = malidp_crtc_mode_fixup,
> + .enable = malidp_crtc_enable,
> + .disable = malidp_crtc_disable,
> + .atomic_check = malidp_crtc_atomic_check,
> + .atomic_flush = malidp_crtc_atomic_flush,
> +};
> +
> +static const struct drm_crtc_funcs malidp_crtc_funcs = {
> + .destroy = drm_crtc_cleanup,
> + .set_config = drm_atomic_helper_set_config,
> + .page_flip = drm_atomic_helper_page_flip,
> + .reset = drm_atomic_helper_crtc_reset,
> + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
> +};
> +
> +int malidp_crtc_init(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct drm_plane *primary = NULL, *plane;
> + int ret;
> +
> + ret = malidp_de_planes_init(drm);
> + if (ret < 0) {
> + DRM_ERROR("Failed to initialise planes\n");
> + return ret;
> + }
> +
> + drm_for_each_plane(plane, drm) {
> + if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
> + primary = plane;
> + break;
> + }
> + }
> +
> + if (!primary) {
> + DRM_ERROR("no primary plane found\n");
> + ret = -EINVAL;
> + goto crtc_cleanup_planes;
> + }
> +
> + ret = drm_crtc_init_with_planes(drm, &malidp->crtc, primary, NULL,
> + &malidp_crtc_funcs, NULL);
> +
> + if (!ret) {
> + drm_crtc_helper_add(&malidp->crtc, &malidp_crtc_helper_funcs);
> + return 0;
> + }
> +
> +crtc_cleanup_planes:
> + malidp_de_planes_destroy(drm);
> +
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
> new file mode 100644
> index 0000000..5d488a2
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_drv.c
> @@ -0,0 +1,500 @@
> +/*
> + * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
> + * Author: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP500/DP550/DP650 KMS/DRM driver
> + */
> +
> +#include <linux/module.h>
> +#include <linux/clk.h>
> +#include <linux/component.h>
> +#include <linux/of_device.h>
> +#include <linux/of_graph.h>
> +#include <linux/of_reserved_mem.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 "malidp_drv.h"
> +#include "malidp_regs.h"
> +#include "malidp_hw.h"
> +
> +#define MALIDP_CONF_VALID_TIMEOUT 250
> +
> +/*
> + * set the "config valid" bit and wait until the hardware acts on it
> + */
> +static int malidp_set_and_wait_config_valid(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> + int ret;
> +
> + hwdev->set_config_valid(hwdev);
> + /* don't wait for config_valid flag if we are in config mode */
> + if (hwdev->in_config_mode(hwdev))
> + return 0;
> +
> + ret = wait_event_interruptible_timeout(malidp->wq,
> + atomic_read(&malidp->config_valid) == 1,
> + msecs_to_jiffies(MALIDP_CONF_VALID_TIMEOUT));
> +
> + return (ret > 0) ? 0 : -ETIMEDOUT;
> +}
> +
> +static void malidp_output_poll_changed(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> +
> + if (malidp->fbdev)
> + drm_fbdev_cma_hotplug_event(malidp->fbdev);
cma_hotplug_event already has a NULL check.
> +}
> +
> +static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
> +{
> + struct drm_device *drm = state->dev;
> + int ret = malidp_set_and_wait_config_valid(drm);
> +
> + if (ret)
> + DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
> +
> + drm_atomic_helper_commit_hw_done(state);
> +}
> +
> +static void malidp_atomic_commit_tail(struct drm_atomic_state *state)
> +{
> + struct drm_device *drm = state->dev;
> +
> + drm_atomic_helper_commit_modeset_disables(drm, state);
> + drm_atomic_helper_commit_modeset_enables(drm, state);
> + drm_atomic_helper_commit_planes(drm, state, false);
> +
> + malidp_atomic_commit_hw_done(state);
> +
> + drm_atomic_helper_wait_for_vblanks(drm, state);
> +
> + drm_atomic_helper_cleanup_planes(drm, state);
> +}
> +
> +static struct drm_mode_config_helper_funcs malidp_mode_config_helpers = {
> + .atomic_commit_tail = malidp_atomic_commit_tail,
> +};
> +
> +static const struct drm_mode_config_funcs malidp_mode_config_funcs = {
> + .fb_create = drm_fb_cma_create,
> + .output_poll_changed = malidp_output_poll_changed,
> + .atomic_check = drm_atomic_helper_check,
> + .atomic_commit = drm_atomic_helper_commit,
> +};
> +
> +static int malidp_enable_vblank(struct drm_device *drm, unsigned int crtc)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + malidp_hw_enable_irq(hwdev, MALIDP_DE_BLOCK,
> + hwdev->map.de_irq_map.vsync_irq);
> + return 0;
> +}
> +
> +static void malidp_disable_vblank(struct drm_device *drm, unsigned int pipe)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK,
> + hwdev->map.de_irq_map.vsync_irq);
> +}
> +
> +static int malidp_init(struct drm_device *drm)
> +{
> + int ret;
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + drm_mode_config_init(drm);
> +
> + drm->mode_config.min_width = hwdev->min_line_size;
> + drm->mode_config.min_height = hwdev->min_line_size;
> + drm->mode_config.max_width = hwdev->max_line_size;
> + drm->mode_config.max_height = hwdev->max_line_size;
> + drm->mode_config.funcs = &malidp_mode_config_funcs;
> + drm->mode_config.helper_private = &malidp_mode_config_helpers;
> +
> + ret = malidp_crtc_init(drm);
> + if (ret) {
> + drm_mode_config_cleanup(drm);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int malidp_irq_init(struct platform_device *pdev)
> +{
> + int irq_de, irq_se, ret = 0;
> + struct drm_device *drm = dev_get_drvdata(&pdev->dev);
> +
> + /* fetch the interrupts from DT */
> + irq_de = platform_get_irq_byname(pdev, "DE");
> + if (irq_de < 0) {
> + DRM_ERROR("no 'DE' IRQ specified!\n");
> + return irq_de;
> + }
> + irq_se = platform_get_irq_byname(pdev, "SE");
> + if (irq_se < 0) {
> + DRM_ERROR("no 'SE' IRQ specified!\n");
> + return irq_se;
> + }
> +
> + ret = malidp_de_irq_init(drm, irq_de);
> + if (ret)
> + return ret;
> +
> + ret = malidp_se_irq_init(drm, irq_se);
> + if (ret) {
> + malidp_de_irq_fini(drm);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static void malidp_lastclose(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> +
> + drm_fbdev_cma_restore_mode(malidp->fbdev);
> +}
> +
> +static const struct file_operations fops = {
> + .owner = THIS_MODULE,
> + .open = drm_open,
> + .release = drm_release,
> + .unlocked_ioctl = drm_ioctl,
> +#ifdef CONFIG_COMPAT
> + .compat_ioctl = drm_compat_ioctl,
> +#endif
> + .poll = drm_poll,
> + .read = drm_read,
> + .llseek = noop_llseek,
> + .mmap = drm_gem_cma_mmap,
> +};
I wonder whether we should have a macro for gem_cma_fops which takes a
name and THIS_MODULE and generates this boilerplate here ... Might be a
good subsystem cleanup.
> +
> +static struct drm_driver malidp_driver = {
> + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
> + DRIVER_PRIME,
> + .lastclose = malidp_lastclose,
> + .get_vblank_counter = drm_vblank_no_hw_counter,
> + .enable_vblank = malidp_enable_vblank,
> + .disable_vblank = malidp_disable_vblank,
> + .gem_free_object = drm_gem_cma_free_object,
Please use _unlocked here.
> + .gem_vm_ops = &drm_gem_cma_vm_ops,
> + .dumb_create = drm_gem_cma_dumb_create,
> + .dumb_map_offset = drm_gem_cma_dumb_map_offset,
> + .dumb_destroy = drm_gem_dumb_destroy,
> + .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 = "mali-dp",
> + .desc = "ARM Mali Display Processor driver",
> + .date = "20160106",
> + .major = 1,
> + .minor = 0,
> +};
> +
> +static const struct of_device_id malidp_drm_of_match[] = {
> + {
> + .compatible = "arm,mali-dp500",
> + .data = &malidp_device[MALIDP_500]
> + },
> + {
> + .compatible = "arm,mali-dp550",
> + .data = &malidp_device[MALIDP_550]
> + },
> + {
> + .compatible = "arm,mali-dp650",
> + .data = &malidp_device[MALIDP_650]
> + },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, malidp_drm_of_match);
> +
> +#define MAX_OUTPUT_CHANNELS 3
> +
> +static int malidp_bind(struct device *dev)
> +{
> + struct resource *res;
> + struct drm_device *drm;
> + struct malidp_drm *malidp;
> + struct malidp_hw_device *hwdev;
> + struct platform_device *pdev = to_platform_device(dev);
> + /* number of lines for the R, G and B output */
> + u8 output_width[MAX_OUTPUT_CHANNELS];
> + int ret = 0, i;
> + u32 version, out_depth = 0;
> +
> + malidp = devm_kzalloc(dev, sizeof(*malidp), GFP_KERNEL);
> + if (!malidp)
> + return -ENOMEM;
> +
> + hwdev = devm_kzalloc(dev, sizeof(*hwdev), GFP_KERNEL);
> + if (!hwdev)
> + return -ENOMEM;
> +
> + /*
> + * copy the associated data from malidp_drm_of_match to avoid
> + * having to keep a reference to the OF node after binding
> + */
> + memcpy(hwdev, of_device_get_match_data(dev), sizeof(*hwdev));
> + malidp->dev = hwdev;
> +
> + INIT_LIST_HEAD(&malidp->event_list);
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + hwdev->regs = devm_ioremap_resource(dev, res);
> + if (IS_ERR(hwdev->regs)) {
> + DRM_ERROR("Failed to map control registers area\n");
> + return PTR_ERR(hwdev->regs);
> + }
> +
> + hwdev->pclk = devm_clk_get(dev, "pclk");
> + if (IS_ERR(hwdev->pclk))
> + return PTR_ERR(hwdev->pclk);
> +
> + hwdev->aclk = devm_clk_get(dev, "aclk");
> + if (IS_ERR(hwdev->aclk))
> + return PTR_ERR(hwdev->aclk);
> +
> + hwdev->mclk = devm_clk_get(dev, "mclk");
> + if (IS_ERR(hwdev->mclk))
> + return PTR_ERR(hwdev->mclk);
> +
> + hwdev->pxlclk = devm_clk_get(dev, "pxlclk");
> + if (IS_ERR(hwdev->pxlclk))
> + return PTR_ERR(hwdev->pxlclk);
> +
> + /* Get the optional framebuffer memory resource */
> + ret = of_reserved_mem_device_init(dev);
> + if (ret && ret != -ENODEV)
> + return ret;
> +
> + drm = drm_dev_alloc(&malidp_driver, dev);
> + if (!drm) {
> + ret = -ENOMEM;
> + goto alloc_fail;
> + }
> +
> + /* Enable APB clock in order to get access to the registers */
> + clk_prepare_enable(hwdev->pclk);
> + /*
> + * Enable AXI clock and main clock so that prefetch can start once
> + * the registers are set
> + */
> + clk_prepare_enable(hwdev->aclk);
> + clk_prepare_enable(hwdev->mclk);
> +
> + ret = hwdev->query_hw(hwdev);
> + if (ret) {
> + DRM_ERROR("Invalid HW configuration\n");
> + goto query_hw_fail;
> + }
> +
> + version = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_DE_CORE_ID);
> + DRM_INFO("found ARM Mali-DP%3x version r%dp%d\n", version >> 16,
> + (version >> 12) & 0xf, (version >> 8) & 0xf);
> +
> + /* set the number of lines used for output of RGB data */
> + ret = of_property_read_u8_array(dev->of_node,
> + "arm,malidp-output-port-lines",
> + output_width, MAX_OUTPUT_CHANNELS);
> + if (ret)
> + goto query_hw_fail;
> +
> + for (i = 0; i < MAX_OUTPUT_CHANNELS; i++)
> + out_depth = (out_depth << 8) | (output_width[i] & 0xf);
> + malidp_hw_write(hwdev, out_depth, hwdev->map.out_depth_base);
> +
> + drm->dev_private = malidp;
> + dev_set_drvdata(dev, drm);
> + atomic_set(&malidp->config_valid, 0);
> + init_waitqueue_head(&malidp->wq);
> +
> + ret = malidp_init(drm);
> + if (ret < 0)
> + goto init_fail;
> +
> + ret = drm_dev_register(drm, 0);
The idea of alloc/register split is that you do it last. You also need to
call drm_connector_register_all still separately. I think Chris Wilson has
patches to fix that up though.
> + if (ret)
> + goto register_fail;
> +
> + /* Set the CRTC's port so that the encoder component can find it */
> + malidp->crtc.port = of_graph_get_next_endpoint(dev->of_node, NULL);
> +
> + ret = component_bind_all(dev, drm);
> + of_node_put(malidp->crtc.port);
> +
> + if (ret) {
> + DRM_ERROR("Failed to bind all components\n");
> + goto bind_fail;
> + }
> +
> + ret = malidp_irq_init(pdev);
> + if (ret < 0)
> + goto irq_init_fail;
> +
> + ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
> + if (ret < 0) {
> + DRM_ERROR("failed to initialise vblank\n");
> + goto vblank_fail;
> + }
> +
> + drm_mode_config_reset(drm);
> +
> + malidp->fbdev = drm_fbdev_cma_init(drm, 32, drm->mode_config.num_crtc,
> + drm->mode_config.num_connector);
> +
> + if (IS_ERR(malidp->fbdev)) {
> + ret = PTR_ERR(malidp->fbdev);
> + malidp->fbdev = NULL;
> + goto fbdev_fail;
> + }
> +
> + drm_kms_helper_poll_init(drm);
> + return 0;
> +
> +fbdev_fail:
> + drm_vblank_cleanup(drm);
> +vblank_fail:
> + malidp_se_irq_fini(drm);
> + malidp_de_irq_fini(drm);
> +irq_init_fail:
> + component_unbind_all(dev, drm);
> +bind_fail:
> + drm_dev_unregister(drm);
> +register_fail:
> + malidp_de_planes_destroy(drm);
> + drm_mode_config_cleanup(drm);
> +init_fail:
> + drm->dev_private = NULL;
> + dev_set_drvdata(dev, NULL);
> +query_hw_fail:
> + clk_disable_unprepare(hwdev->mclk);
> + clk_disable_unprepare(hwdev->aclk);
> + clk_disable_unprepare(hwdev->pclk);
> + drm_dev_unref(drm);
> +alloc_fail:
> + of_reserved_mem_device_release(dev);
> +
> + return ret;
> +}
> +
> +static void malidp_unbind(struct device *dev)
> +{
> + struct drm_device *drm = dev_get_drvdata(dev);
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + if (malidp->fbdev) {
> + drm_fbdev_cma_fini(malidp->fbdev);
> + malidp->fbdev = NULL;
> + }
> + drm_kms_helper_poll_fini(drm);
> + malidp_se_irq_fini(drm);
> + malidp_de_irq_fini(drm);
> + drm_vblank_cleanup(drm);
> + component_unbind_all(dev, drm);
> + drm_dev_unregister(drm);
Unregister first, also need to unregister connectors too.
> + malidp_de_planes_destroy(drm);
> + drm_mode_config_cleanup(drm);
> + drm->dev_private = NULL;
> + dev_set_drvdata(dev, NULL);
> + clk_disable_unprepare(hwdev->mclk);
> + clk_disable_unprepare(hwdev->aclk);
> + clk_disable_unprepare(hwdev->pclk);
> + drm_dev_unref(drm);
> + of_reserved_mem_device_release(dev);
> +}
> +
> +static const struct component_master_ops malidp_master_ops = {
> + .bind = malidp_bind,
> + .unbind = malidp_unbind,
> +};
> +
> +static int malidp_compare_dev(struct device *dev, void *data)
> +{
> + struct device_node *np = data;
> +
> + return dev->of_node == np;
> +}
> +
> +static int malidp_platform_probe(struct platform_device *pdev)
> +{
> + struct device_node *port, *ep;
> + struct component_match *match = NULL;
> +
> + if (!pdev->dev.of_node)
> + return -ENODEV;
> +
> + /* there is only one output port inside each device, find it */
> + ep = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
> + if (!ep)
> + return -ENODEV;
> +
> + if (!of_device_is_available(ep)) {
> + of_node_put(ep);
> + return -ENODEV;
> + }
> +
> + /* add the remote encoder port as component */
> + port = of_graph_get_remote_port_parent(ep);
> + of_node_put(ep);
> + if (!port || !of_device_is_available(port)) {
> + of_node_put(port);
> + return -EAGAIN;
> + }
> +
> + component_match_add(&pdev->dev, &match, malidp_compare_dev, port);
> + return component_master_add_with_match(&pdev->dev, &malidp_master_ops,
> + match);
> +}
> +
> +static int malidp_platform_remove(struct platform_device *pdev)
> +{
> + component_master_del(&pdev->dev, &malidp_master_ops);
> + return 0;
> +}
> +
> +static struct platform_driver malidp_platform_driver = {
> + .probe = malidp_platform_probe,
> + .remove = malidp_platform_remove,
> + .driver = {
> + .name = "mali-dp",
> + .of_match_table = malidp_drm_of_match,
> + },
> +};
> +
> +module_platform_driver(malidp_platform_driver);
> +
> +MODULE_AUTHOR("Liviu Dudau <Liviu.Dudau@xxxxxxx>");
> +MODULE_DESCRIPTION("ARM Mali DP DRM driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/arm/malidp_drv.h b/drivers/gpu/drm/arm/malidp_drv.h
> new file mode 100644
> index 0000000..3cae0b3
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_drv.h
> @@ -0,0 +1,48 @@
> +/*
> + * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
> + * Author: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP500/DP550/DP650 KMS/DRM driver structures
> + */
> +
> +#ifndef __MALIDP_DRV_H__
> +#define __MALIDP_DRV_H__
> +
> +#include <linux/mutex.h>
> +#include <linux/wait.h>
> +#include "malidp_hw.h"
> +
> +struct malidp_drm {
> + struct malidp_hw_device *dev;
> + struct drm_fbdev_cma *fbdev;
> + struct list_head event_list;
> + struct drm_crtc crtc;
> + wait_queue_head_t wq;
> + atomic_t config_valid;
> +};
> +
> +#define crtc_to_malidp_device(x) container_of(x, struct malidp_drm, crtc)
> +
> +struct malidp_plane {
> + struct drm_plane base;
> + struct malidp_hw_device *hwdev;
> + const struct malidp_layer *layer;
> + /* size of the required rotation memory when plane is rotated */
> + u32 rotmem_size;
Derived state like rotmem_size must be in a structure that embeds
drm_plane_state. If you store it in the object structure itself this will
break TEST_ONLY atomic commits. Obviously also need to adjust the
atomic_check code.
> +};
> +
> +#define to_malidp_plane(x) container_of(x, struct malidp_plane, base)
> +
> +int malidp_de_planes_init(struct drm_device *drm);
> +void malidp_de_planes_destroy(struct drm_device *drm);
> +int malidp_crtc_init(struct drm_device *drm);
> +
> +/* often used combination of rotational bits */
> +#define MALIDP_ROTATED_MASK (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))
> +
> +#endif /* __MALIDP_DRV_H__ */
> diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
> new file mode 100644
> index 0000000..a6132f1
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_hw.c
> @@ -0,0 +1,691 @@
> +/*
> + * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
> + * Author: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP500/DP550/DP650 hardware manipulation routines. This is where
> + * the difference between various versions of the hardware is being dealt with
> + * in an attempt to provide to the rest of the driver code a unified view
> + */
> +
> +#include <linux/types.h>
> +#include <linux/io.h>
> +#include <drm/drmP.h>
> +#include <video/videomode.h>
> +#include <video/display_timing.h>
> +
> +#include "malidp_drv.h"
> +#include "malidp_hw.h"
> +
> +static const struct malidp_input_format malidp500_de_formats[] = {
> + /* fourcc, layers supporting the format, internal id */
> + { DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 0 },
> + { DRM_FORMAT_ABGR2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 1 },
> + { DRM_FORMAT_ARGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 2 },
> + { DRM_FORMAT_ABGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 3 },
> + { DRM_FORMAT_XRGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 4 },
> + { DRM_FORMAT_XBGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 5 },
> + { DRM_FORMAT_RGB888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 6 },
> + { DRM_FORMAT_BGR888, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 7 },
> + { DRM_FORMAT_RGBA5551, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 8 },
> + { DRM_FORMAT_ABGR1555, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 9 },
> + { DRM_FORMAT_RGB565, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 10 },
> + { DRM_FORMAT_BGR565, DE_VIDEO1 | DE_GRAPHICS1 | DE_GRAPHICS2, 11 },
> + { DRM_FORMAT_UYVY, DE_VIDEO1, 12 },
> + { DRM_FORMAT_YUYV, DE_VIDEO1, 13 },
> + { DRM_FORMAT_NV12, DE_VIDEO1, 14 },
> + { DRM_FORMAT_YUV420, DE_VIDEO1, 15 },
> +};
> +
> +#define MALIDP_ID(__group, __format) \
> + ((((__group) & 0x7) << 3) | ((__format) & 0x7))
> +
> +#define MALIDP_COMMON_FORMATS \
> + /* fourcc, layers supporting the format, internal id */ \
> + { DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 0) }, \
> + { DRM_FORMAT_ABGR2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 1) }, \
> + { DRM_FORMAT_RGBA1010102, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 2) }, \
> + { DRM_FORMAT_BGRA1010102, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(0, 3) }, \
> + { DRM_FORMAT_ARGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 0) }, \
> + { DRM_FORMAT_ABGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 1) }, \
> + { DRM_FORMAT_RGBA8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 2) }, \
> + { DRM_FORMAT_BGRA8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(1, 3) }, \
> + { DRM_FORMAT_XRGB8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 0) }, \
> + { DRM_FORMAT_XBGR8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 1) }, \
> + { DRM_FORMAT_RGBX8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 2) }, \
> + { DRM_FORMAT_BGRX8888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | DE_SMART, MALIDP_ID(2, 3) }, \
> + { DRM_FORMAT_RGB888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(3, 0) }, \
> + { DRM_FORMAT_BGR888, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(3, 1) }, \
> + { DRM_FORMAT_RGBA5551, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 0) }, \
> + { DRM_FORMAT_ABGR1555, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 1) }, \
> + { DRM_FORMAT_RGB565, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 2) }, \
> + { DRM_FORMAT_BGR565, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2, MALIDP_ID(4, 3) }, \
> + { DRM_FORMAT_YUYV, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 2) }, \
> + { DRM_FORMAT_UYVY, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 3) }, \
> + { DRM_FORMAT_NV12, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 6) }, \
> + { DRM_FORMAT_YUV420, DE_VIDEO1 | DE_VIDEO2, MALIDP_ID(5, 7) }
> +
> +static const struct malidp_input_format malidp550_de_formats[] = {
> + MALIDP_COMMON_FORMATS,
> +};
> +
> +static const struct malidp_layer malidp500_layers[] = {
> + { DE_VIDEO1, MALIDP500_DE_LV_BASE, MALIDP500_DE_LV_PTR_BASE },
> + { DE_GRAPHICS1, MALIDP500_DE_LG1_BASE, MALIDP500_DE_LG1_PTR_BASE },
> + { DE_GRAPHICS2, MALIDP500_DE_LG2_BASE, MALIDP500_DE_LG2_PTR_BASE },
> +};
> +
> +static const struct malidp_layer malidp550_layers[] = {
> + { DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE },
> + { DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE },
> + { DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE },
> + { DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE },
> +};
> +
> +#define MALIDP_DE_DEFAULT_PREFETCH_START 5
> +
> +static int malidp500_query_hw(struct malidp_hw_device *hwdev)
> +{
> + u32 conf = malidp_hw_read(hwdev, MALIDP500_CONFIG_ID);
> + /* bit 4 of the CONFIG_ID register holds the line size multiplier */
> + u8 ln_size_mult = conf & 0x10 ? 2 : 1;
> +
> + hwdev->min_line_size = 2;
> + hwdev->max_line_size = SZ_2K * ln_size_mult;
> + hwdev->rotation_memory[0] = SZ_1K * 64 * ln_size_mult;
> + hwdev->rotation_memory[1] = 0; /* no second rotation memory bank */
> +
> + return 0;
> +}
> +
> +static void malidp500_enter_config_mode(struct malidp_hw_device *hwdev)
> +{
> + u32 status, count = 100;
> +
> + malidp_hw_setbits(hwdev, MALIDP500_DC_CONFIG_REQ, MALIDP500_DC_CONTROL);
> + while (count) {
> + status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if ((status & MALIDP500_DC_CONFIG_REQ) == MALIDP500_DC_CONFIG_REQ)
> + break;
> + /*
> + * entering config mode can take as long as the rendering
> + * of a full frame, hence the long sleep here
> + */
> + usleep_range(1000, 10000);
> + count--;
> + }
> + WARN(count == 0, "timeout while entering config mode");
> +}
> +
> +static void malidp500_leave_config_mode(struct malidp_hw_device *hwdev)
> +{
> + u32 status, count = 100;
> +
> + malidp_hw_clearbits(hwdev, MALIDP500_DC_CONFIG_REQ, MALIDP500_DC_CONTROL);
> + while (count) {
> + status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if ((status & MALIDP500_DC_CONFIG_REQ) == 0)
> + break;
> + usleep_range(100, 1000);
> + count--;
> + }
> + WARN(count == 0, "timeout while leaving config mode");
> +}
> +
> +static bool malidp500_in_config_mode(struct malidp_hw_device *hwdev)
> +{
> + u32 status;
> +
> + status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if ((status & MALIDP500_DC_CONFIG_REQ) == MALIDP500_DC_CONFIG_REQ)
> + return true;
> +
> + return false;
> +}
> +
> +static void malidp500_set_config_valid(struct malidp_hw_device *hwdev)
> +{
> + malidp_hw_setbits(hwdev, MALIDP_CFG_VALID, MALIDP500_CONFIG_VALID);
> +}
> +
> +static void malidp500_modeset(struct malidp_hw_device *hwdev, struct videomode *mode)
> +{
> + u32 val = 0;
> +
> + malidp_hw_clearbits(hwdev, MALIDP500_DC_CLEAR_MASK, MALIDP500_DC_CONTROL);
> + if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH)
> + val |= MALIDP500_HSYNCPOL;
> + if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH)
> + val |= MALIDP500_VSYNCPOL;
> + val |= MALIDP_DE_DEFAULT_PREFETCH_START;
> + malidp_hw_setbits(hwdev, val, MALIDP500_DC_CONTROL);
> +
> + /*
> + * Mali-DP500 encodes the background color like this:
> + * - red @ MALIDP500_BGND_COLOR[12:0]
> + * - green @ MALIDP500_BGND_COLOR[27:16]
> + * - blue @ (MALIDP500_BGND_COLOR + 4)[12:0]
> + */
> + val = ((MALIDP_BGND_COLOR_G & 0xfff) << 16) |
> + (MALIDP_BGND_COLOR_R & 0xfff);
> + malidp_hw_write(hwdev, val, MALIDP500_BGND_COLOR);
> + malidp_hw_write(hwdev, MALIDP_BGND_COLOR_B, MALIDP500_BGND_COLOR + 4);
> +
> + val = MALIDP_DE_H_FRONTPORCH(mode->hfront_porch) |
> + MALIDP_DE_H_BACKPORCH(mode->hback_porch);
> + malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_H_TIMINGS);
> +
> + val = MALIDP500_DE_V_FRONTPORCH(mode->vfront_porch) |
> + MALIDP_DE_V_BACKPORCH(mode->vback_porch);
> + malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_V_TIMINGS);
> +
> + val = MALIDP_DE_H_SYNCWIDTH(mode->hsync_len) |
> + MALIDP_DE_V_SYNCWIDTH(mode->vsync_len);
> + malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_SYNC_WIDTH);
> +
> + val = MALIDP_DE_H_ACTIVE(mode->hactive) | MALIDP_DE_V_ACTIVE(mode->vactive);
> + malidp_hw_write(hwdev, val, MALIDP500_TIMINGS_BASE + MALIDP_DE_HV_ACTIVE);
> +
> + if (mode->flags & DISPLAY_FLAGS_INTERLACED)
> + malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
> + else
> + malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
> +}
> +
> +static int malidp500_rotmem_required(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt)
> +{
> + unsigned int depth;
> + int bpp;
> +
> + /* RGB888 or BGR888 can't be rotated */
> + if ((fmt == DRM_FORMAT_RGB888) || (fmt == DRM_FORMAT_BGR888))
> + return -EINVAL;
> +
> + /*
> + * Each layer needs enough rotation memory to fit 8 lines
> + * worth of pixel data. Required size is then:
> + * size = rotated_width * (bpp / 8) * 8;
> + */
> + drm_fb_get_bpp_depth(fmt, &depth, &bpp);
> +
> + return w * bpp;
> +}
> +
> +static int malidp550_query_hw(struct malidp_hw_device *hwdev)
> +{
> + u32 conf = malidp_hw_read(hwdev, MALIDP550_CONFIG_ID);
> + u8 ln_size = (conf >> 4) & 0x3, rsize;
> +
> + hwdev->min_line_size = 2;
> +
> + switch (ln_size) {
> + case 0:
> + hwdev->max_line_size = SZ_2K;
> + /* two banks of 64KB for rotation memory */
> + rsize = 64;
> + break;
> + case 1:
> + hwdev->max_line_size = SZ_4K;
> + /* two banks of 128KB for rotation memory */
> + rsize = 128;
> + break;
> + case 2:
> + hwdev->max_line_size = 1280;
> + /* two banks of 40KB for rotation memory */
> + rsize = 40;
> + break;
> + case 3:
> + /* reserved value */
> + hwdev->max_line_size = 0;
> + return -EINVAL;
> + }
> +
> + hwdev->rotation_memory[0] = hwdev->rotation_memory[1] = rsize * SZ_1K;
> + return 0;
> +}
> +
> +static void malidp550_enter_config_mode(struct malidp_hw_device *hwdev)
> +{
> + u32 status, count = 100;
> +
> + malidp_hw_setbits(hwdev, MALIDP550_DC_CONFIG_REQ, MALIDP550_DC_CONTROL);
> + while (count) {
> + status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if ((status & MALIDP550_DC_CONFIG_REQ) == MALIDP550_DC_CONFIG_REQ)
> + break;
> + /*
> + * entering config mode can take as long as the rendering
> + * of a full frame, hence the long sleep here
> + */
> + usleep_range(1000, 10000);
> + count--;
> + }
> + WARN(count == 0, "timeout while entering config mode");
> +}
> +
> +static void malidp550_leave_config_mode(struct malidp_hw_device *hwdev)
> +{
> + u32 status, count = 100;
> +
> + malidp_hw_clearbits(hwdev, MALIDP550_DC_CONFIG_REQ, MALIDP550_DC_CONTROL);
> + while (count) {
> + status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if ((status & MALIDP550_DC_CONFIG_REQ) == 0)
> + break;
> + usleep_range(100, 1000);
> + count--;
> + }
> + WARN(count == 0, "timeout while leaving config mode");
> +}
> +
> +static bool malidp550_in_config_mode(struct malidp_hw_device *hwdev)
> +{
> + u32 status;
> +
> + status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if ((status & MALIDP550_DC_CONFIG_REQ) == MALIDP550_DC_CONFIG_REQ)
> + return true;
> +
> + return false;
> +}
> +
> +static void malidp550_set_config_valid(struct malidp_hw_device *hwdev)
> +{
> + malidp_hw_setbits(hwdev, MALIDP_CFG_VALID, MALIDP550_CONFIG_VALID);
> +}
> +
> +static void malidp550_modeset(struct malidp_hw_device *hwdev, struct videomode *mode)
> +{
> + u32 val = MALIDP_DE_DEFAULT_PREFETCH_START;
> +
> + malidp_hw_write(hwdev, val, MALIDP550_DE_CONTROL);
> + /*
> + * Mali-DP550 and Mali-DP650 encode the background color like this:
> + * - red @ MALIDP550_DE_BGND_COLOR[23:16]
> + * - green @ MALIDP550_DE_BGND_COLOR[15:8]
> + * - blue @ MALIDP550_DE_BGND_COLOR[7:0]
> + *
> + * We need to truncate the least significant 4 bits from the default
> + * MALIDP_BGND_COLOR_x values
> + */
> + val = (((MALIDP_BGND_COLOR_R >> 4) & 0xff) << 16) |
> + (((MALIDP_BGND_COLOR_G >> 4) & 0xff) << 8) |
> + ((MALIDP_BGND_COLOR_B >> 4) & 0xff);
> + malidp_hw_write(hwdev, val, MALIDP550_DE_BGND_COLOR);
> +
> + val = MALIDP_DE_H_FRONTPORCH(mode->hfront_porch) |
> + MALIDP_DE_H_BACKPORCH(mode->hback_porch);
> + malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_H_TIMINGS);
> +
> + val = MALIDP550_DE_V_FRONTPORCH(mode->vfront_porch) |
> + MALIDP_DE_V_BACKPORCH(mode->vback_porch);
> + malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_V_TIMINGS);
> +
> + val = MALIDP_DE_H_SYNCWIDTH(mode->hsync_len) |
> + MALIDP_DE_V_SYNCWIDTH(mode->vsync_len);
> + if (mode->flags & DISPLAY_FLAGS_HSYNC_HIGH)
> + val |= MALIDP550_HSYNCPOL;
> + if (mode->flags & DISPLAY_FLAGS_VSYNC_HIGH)
> + val |= MALIDP550_VSYNCPOL;
> + malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_SYNC_WIDTH);
> +
> + val = MALIDP_DE_H_ACTIVE(mode->hactive) | MALIDP_DE_V_ACTIVE(mode->vactive);
> + malidp_hw_write(hwdev, val, MALIDP550_TIMINGS_BASE + MALIDP_DE_HV_ACTIVE);
> +
> + if (mode->flags & DISPLAY_FLAGS_INTERLACED)
> + malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
> + else
> + malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_ILACED, MALIDP_DE_DISPLAY_FUNC);
> +}
> +
> +static int malidp550_rotmem_required(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt)
> +{
> + u32 bytes_per_col;
> +
> + /* raw RGB888 or BGR888 can't be rotated */
> + if ((fmt == DRM_FORMAT_RGB888) || (fmt == DRM_FORMAT_BGR888))
> + return -EINVAL;
> +
> + switch (fmt) {
> + /* 8 lines at 4 bytes per pixel */
> + case DRM_FORMAT_ARGB2101010:
> + case DRM_FORMAT_ABGR2101010:
> + case DRM_FORMAT_RGBA1010102:
> + case DRM_FORMAT_BGRA1010102:
> + case DRM_FORMAT_ARGB8888:
> + case DRM_FORMAT_ABGR8888:
> + case DRM_FORMAT_RGBA8888:
> + case DRM_FORMAT_BGRA8888:
> + case DRM_FORMAT_XRGB8888:
> + case DRM_FORMAT_XBGR8888:
> + case DRM_FORMAT_RGBX8888:
> + case DRM_FORMAT_BGRX8888:
> + case DRM_FORMAT_RGB888:
> + case DRM_FORMAT_BGR888:
> + /* 16 lines at 2 bytes per pixel */
> + case DRM_FORMAT_RGBA5551:
> + case DRM_FORMAT_ABGR1555:
> + case DRM_FORMAT_RGB565:
> + case DRM_FORMAT_BGR565:
> + case DRM_FORMAT_UYVY:
> + case DRM_FORMAT_YUYV:
> + bytes_per_col = 32;
> + break;
> + /* 16 lines at 1.5 bytes per pixel */
> + case DRM_FORMAT_NV12:
> + case DRM_FORMAT_YUV420:
> + bytes_per_col = 24;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return w * bytes_per_col;
> +}
> +
> +static int malidp650_query_hw(struct malidp_hw_device *hwdev)
> +{
> + u32 conf = malidp_hw_read(hwdev, MALIDP550_CONFIG_ID);
> + u8 ln_size = (conf >> 4) & 0x3, rsize;
> +
> + hwdev->min_line_size = 4;
> +
> + switch (ln_size) {
> + case 0:
> + case 2:
> + /* reserved values */
> + hwdev->max_line_size = 0;
> + return -EINVAL;
> + case 1:
> + hwdev->max_line_size = SZ_4K;
> + /* two banks of 128KB for rotation memory */
> + rsize = 128;
> + break;
> + case 3:
> + hwdev->max_line_size = 2560;
> + /* two banks of 80KB for rotation memory */
> + rsize = 80;
> + }
> +
> + hwdev->rotation_memory[0] = hwdev->rotation_memory[1] = rsize * SZ_1K;
> + return 0;
> +}
> +
> +const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES] = {
> + [MALIDP_500] = {
> + .map = {
> + .se_base = MALIDP500_SE_BASE,
> + .dc_base = MALIDP500_DC_BASE,
> + .out_depth_base = MALIDP500_OUTPUT_DEPTH,
> + .features = 0, /* no CLEARIRQ register */
> + .n_layers = ARRAY_SIZE(malidp500_layers),
> + .layers = malidp500_layers,
> + .de_irq_map = {
> + .irq_mask = MALIDP_DE_IRQ_UNDERRUN |
> + MALIDP500_DE_IRQ_AXI_ERR |
> + MALIDP500_DE_IRQ_VSYNC |
> + MALIDP500_DE_IRQ_GLOBAL,
> + .vsync_irq = MALIDP500_DE_IRQ_VSYNC,
> + },
> + .se_irq_map = {
> + .irq_mask = MALIDP500_SE_IRQ_CONF_MODE,
> + .vsync_irq = 0,
> + },
> + .dc_irq_map = {
> + .irq_mask = MALIDP500_DE_IRQ_CONF_VALID,
> + .vsync_irq = MALIDP500_DE_IRQ_CONF_VALID,
> + },
> + .input_formats = malidp500_de_formats,
> + .n_input_formats = ARRAY_SIZE(malidp500_de_formats),
> + },
> + .query_hw = malidp500_query_hw,
> + .enter_config_mode = malidp500_enter_config_mode,
> + .leave_config_mode = malidp500_leave_config_mode,
> + .in_config_mode = malidp500_in_config_mode,
> + .set_config_valid = malidp500_set_config_valid,
> + .modeset = malidp500_modeset,
> + .rotmem_required = malidp500_rotmem_required,
> + },
> + [MALIDP_550] = {
> + .map = {
> + .se_base = MALIDP550_SE_BASE,
> + .dc_base = MALIDP550_DC_BASE,
> + .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
> + .features = MALIDP_REGMAP_HAS_CLEARIRQ,
> + .n_layers = ARRAY_SIZE(malidp550_layers),
> + .layers = malidp550_layers,
> + .de_irq_map = {
> + .irq_mask = MALIDP_DE_IRQ_UNDERRUN |
> + MALIDP550_DE_IRQ_VSYNC,
> + .vsync_irq = MALIDP550_DE_IRQ_VSYNC,
> + },
> + .se_irq_map = {
> + .irq_mask = MALIDP550_SE_IRQ_EOW |
> + MALIDP550_SE_IRQ_AXI_ERR,
> + },
> + .dc_irq_map = {
> + .irq_mask = MALIDP550_DC_IRQ_CONF_VALID,
> + .vsync_irq = MALIDP550_DC_IRQ_CONF_VALID,
> + },
> + .input_formats = malidp550_de_formats,
> + .n_input_formats = ARRAY_SIZE(malidp550_de_formats),
> + },
> + .query_hw = malidp550_query_hw,
> + .enter_config_mode = malidp550_enter_config_mode,
> + .leave_config_mode = malidp550_leave_config_mode,
> + .in_config_mode = malidp550_in_config_mode,
> + .set_config_valid = malidp550_set_config_valid,
> + .modeset = malidp550_modeset,
> + .rotmem_required = malidp550_rotmem_required,
> + },
> + [MALIDP_650] = {
> + .map = {
> + .se_base = MALIDP550_SE_BASE,
> + .dc_base = MALIDP550_DC_BASE,
> + .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
> + .features = MALIDP_REGMAP_HAS_CLEARIRQ,
> + .n_layers = ARRAY_SIZE(malidp550_layers),
> + .layers = malidp550_layers,
> + .de_irq_map = {
> + .irq_mask = MALIDP_DE_IRQ_UNDERRUN |
> + MALIDP650_DE_IRQ_DRIFT |
> + MALIDP550_DE_IRQ_VSYNC,
> + .vsync_irq = MALIDP550_DE_IRQ_VSYNC,
> + },
> + .se_irq_map = {
> + .irq_mask = MALIDP550_SE_IRQ_EOW |
> + MALIDP550_SE_IRQ_AXI_ERR,
> + },
> + .dc_irq_map = {
> + .irq_mask = MALIDP550_DC_IRQ_CONF_VALID,
> + .vsync_irq = MALIDP550_DC_IRQ_CONF_VALID,
> + },
> + .input_formats = malidp550_de_formats,
> + .n_input_formats = ARRAY_SIZE(malidp550_de_formats),
> + },
> + .query_hw = malidp650_query_hw,
> + .enter_config_mode = malidp550_enter_config_mode,
> + .leave_config_mode = malidp550_leave_config_mode,
> + .in_config_mode = malidp550_in_config_mode,
> + .set_config_valid = malidp550_set_config_valid,
> + .modeset = malidp550_modeset,
> + .rotmem_required = malidp550_rotmem_required,
> + },
> +};
> +
> +u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,
> + u8 layer_id, u32 format)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < map->n_input_formats; i++) {
> + if (((map->input_formats[i].layer & layer_id) == layer_id) &&
> + (map->input_formats[i].format == format))
> + return map->input_formats[i].id;
> + }
> +
> + return MALIDP_INVALID_FORMAT_ID;
> +}
> +
> +static void malidp_hw_clear_irq(struct malidp_hw_device *hwdev, u8 block, u32 irq)
> +{
> + u32 base = malidp_get_block_base(hwdev, block);
> +
> + if (hwdev->map.features & MALIDP_REGMAP_HAS_CLEARIRQ)
> + malidp_hw_write(hwdev, irq, base + MALIDP_REG_CLEARIRQ);
> + else
> + malidp_hw_write(hwdev, irq, base + MALIDP_REG_STATUS);
> +}
> +
> +static irqreturn_t malidp_de_irq(int irq, void *arg)
> +{
> + struct drm_device *drm = arg;
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev;
> + const struct malidp_irq_map *de;
> + u32 status, mask, dc_status;
> + irqreturn_t ret = IRQ_NONE;
> +
> + if (!drm->dev_private)
> + return IRQ_HANDLED;
> +
> + hwdev = malidp->dev;
> + de = &hwdev->map.de_irq_map;
> +
> + /* first handle the config valid IRQ */
> + dc_status = malidp_hw_read(hwdev, hwdev->map.dc_base + MALIDP_REG_STATUS);
> + if (dc_status & hwdev->map.dc_irq_map.vsync_irq) {
> + /* we have a page flip event */
> + atomic_set(&malidp->config_valid, 1);
> + malidp_hw_clear_irq(hwdev, MALIDP_DC_BLOCK, dc_status);
> + ret = IRQ_WAKE_THREAD;
> + }
> +
> + status = malidp_hw_read(hwdev, MALIDP_REG_STATUS);
> + if (!(status & de->irq_mask))
> + return ret;
> +
> + mask = malidp_hw_read(hwdev, MALIDP_REG_MASKIRQ);
> + status &= mask;
> + if (status & de->vsync_irq)
> + drm_crtc_handle_vblank(&malidp->crtc);
> +
> + malidp_hw_clear_irq(hwdev, MALIDP_DE_BLOCK, status);
> +
> + return (ret == IRQ_NONE) ? IRQ_HANDLED : ret;
> +}
> +
> +static irqreturn_t malidp_de_irq_thread_handler(int irq, void *arg)
> +{
> + struct drm_device *drm = arg;
> + struct malidp_drm *malidp = drm->dev_private;
> +
> + wake_up(&malidp->wq);
> +
> + return IRQ_HANDLED;
> +}
> +
> +int malidp_de_irq_init(struct drm_device *drm, int irq)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> + int ret;
> +
> + /* ensure interrupts are disabled */
> + malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK, 0xffffffff);
> + malidp_hw_clear_irq(hwdev, MALIDP_DE_BLOCK, 0xffffffff);
> + malidp_hw_disable_irq(hwdev, MALIDP_DC_BLOCK, 0xffffffff);
> + malidp_hw_clear_irq(hwdev, MALIDP_DC_BLOCK, 0xffffffff);
> +
> + ret = devm_request_threaded_irq(drm->dev, irq, malidp_de_irq,
> + malidp_de_irq_thread_handler,
> + IRQF_SHARED, "malidp-de", drm);
> + if (ret < 0) {
> + DRM_ERROR("failed to install DE IRQ handler\n");
> + return ret;
> + }
> +
> + /* first enable the DC block IRQs */
> + malidp_hw_enable_irq(hwdev, MALIDP_DC_BLOCK,
> + hwdev->map.dc_irq_map.irq_mask);
> +
> + /* now enable the DE block IRQs */
> + malidp_hw_enable_irq(hwdev, MALIDP_DE_BLOCK,
> + hwdev->map.de_irq_map.irq_mask);
> +
> + return 0;
> +}
> +
> +void malidp_de_irq_fini(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + malidp_hw_disable_irq(hwdev, MALIDP_DE_BLOCK,
> + hwdev->map.de_irq_map.irq_mask);
> + malidp_hw_disable_irq(hwdev, MALIDP_DC_BLOCK,
> + hwdev->map.dc_irq_map.irq_mask);
> +}
> +
> +static irqreturn_t malidp_se_irq(int irq, void *arg)
> +{
> + struct drm_device *drm = arg;
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> + u32 status, mask;
> +
> + status = malidp_hw_read(hwdev, hwdev->map.se_base + MALIDP_REG_STATUS);
> + if (!(status & hwdev->map.se_irq_map.irq_mask))
> + return IRQ_NONE;
> +
> + mask = malidp_hw_read(hwdev, hwdev->map.se_base + MALIDP_REG_MASKIRQ);
> + status = malidp_hw_read(hwdev, hwdev->map.se_base + MALIDP_REG_STATUS);
> + status &= mask;
> + /* ToDo: status decoding and firing up of VSYNC and page flip events */
> +
> + malidp_hw_clear_irq(hwdev, MALIDP_SE_BLOCK, status);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t malidp_se_irq_thread_handler(int irq, void *arg)
> +{
> + return IRQ_HANDLED;
> +}
> +
> +int malidp_se_irq_init(struct drm_device *drm, int irq)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> + int ret;
> +
> + /* ensure interrupts are disabled */
> + malidp_hw_disable_irq(hwdev, MALIDP_SE_BLOCK, 0xffffffff);
> + malidp_hw_clear_irq(hwdev, MALIDP_SE_BLOCK, 0xffffffff);
> +
> + ret = devm_request_threaded_irq(drm->dev, irq, malidp_se_irq,
> + malidp_se_irq_thread_handler,
> + IRQF_SHARED, "malidp-se", drm);
> + if (ret < 0) {
> + DRM_ERROR("failed to install SE IRQ handler\n");
> + return ret;
> + }
> +
> + malidp_hw_enable_irq(hwdev, MALIDP_SE_BLOCK,
> + hwdev->map.se_irq_map.irq_mask);
> +
> + return 0;
> +}
> +
> +void malidp_se_irq_fini(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + struct malidp_hw_device *hwdev = malidp->dev;
> +
> + malidp_hw_disable_irq(hwdev, MALIDP_SE_BLOCK,
> + hwdev->map.se_irq_map.irq_mask);
> +}
> diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h
> new file mode 100644
> index 0000000..141743e
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_hw.h
> @@ -0,0 +1,241 @@
> +/*
> + *
> + * (C) COPYRIGHT 2013-2016 ARM Limited. All rights reserved.
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP hardware manipulation routines.
> + */
> +
> +#ifndef __MALIDP_HW_H__
> +#define __MALIDP_HW_H__
> +
> +#include <linux/bitops.h>
> +#include "malidp_regs.h"
> +
> +struct videomode;
> +struct clk;
> +
> +/* Mali DP IP blocks */
> +enum {
> + MALIDP_DE_BLOCK = 0,
> + MALIDP_SE_BLOCK,
> + MALIDP_DC_BLOCK
> +};
> +
> +/* Mali DP layer IDs */
> +enum {
> + DE_VIDEO1 = BIT(0),
> + DE_GRAPHICS1 = BIT(1),
> + DE_GRAPHICS2 = BIT(2), /* used only in DP500 */
> + DE_VIDEO2 = BIT(3),
> + DE_SMART = BIT(4),
> +};
> +
> +struct malidp_input_format {
> + u32 format; /* DRM fourcc */
> + u8 layer; /* bitmask of layers supporting it */
> + u8 id; /* used internally */
> +};
> +
> +#define MALIDP_INVALID_FORMAT_ID 0xff
> +
> +/*
> + * hide the differences between register maps
> + * by using a common structure to hold the
> + * base register offsets
> + */
> +
> +struct malidp_irq_map {
> + u32 irq_mask; /* mask of IRQs that can be enabled in the block */
> + u32 vsync_irq; /* IRQ bit used for signaling during VSYNC */
> +};
> +
> +struct malidp_layer {
> + u16 id; /* layer ID */
> + u16 base; /* address offset for the register bank */
> + u16 ptr; /* address offset for the pointer register */
> +};
> +
> +/* regmap features */
> +#define MALIDP_REGMAP_HAS_CLEARIRQ (1 << 0)
> +
> +struct malidp_hw_regmap {
> + /* address offset of the DE register bank */
> + /* is always 0x0000 */
> + /* address offset of the SE registers bank */
> + const u16 se_base;
> + /* address offset of the DC registers bank */
> + const u16 dc_base;
> +
> + /* address offset for the output depth register */
> + const u16 out_depth_base;
> +
> + /* bitmap with register map features */
> + const u8 features;
> +
> + /* list of supported layers */
> + const u8 n_layers;
> + const struct malidp_layer *layers;
> +
> + const struct malidp_irq_map de_irq_map;
> + const struct malidp_irq_map se_irq_map;
> + const struct malidp_irq_map dc_irq_map;
> +
> + /* list of supported input formats for each layer */
> + const struct malidp_input_format *input_formats;
> + const u8 n_input_formats;
> +};
> +
> +struct malidp_hw_device {
> + const struct malidp_hw_regmap map;
> + void __iomem *regs;
> +
> + /* APB clock */
> + struct clk *pclk;
> + /* AXI clock */
> + struct clk *aclk;
> + /* main clock for display core */
> + struct clk *mclk;
> + /* pixel clock for display core */
> + struct clk *pxlclk;
> +
> + /*
> + * Validate the driver instance against the hardware bits
> + */
> + int (*query_hw)(struct malidp_hw_device *hwdev);
> +
> + /*
> + * Set the hardware into config mode, ready to accept mode changes
> + */
> + void (*enter_config_mode)(struct malidp_hw_device *hwdev);
> +
> + /*
> + * Tell hardware to exit configuration mode
> + */
> + void (*leave_config_mode)(struct malidp_hw_device *hwdev);
> +
> + /*
> + * Query if hardware is in configuration mode
> + */
> + bool (*in_config_mode)(struct malidp_hw_device *hwdev);
> +
> + /*
> + * Set configuration valid flag for hardware parameters that can
> + * be changed outside the configuration mode. Hardware will use
> + * the new settings when config valid is set after the end of the
> + * current buffer scanout
> + */
> + void (*set_config_valid)(struct malidp_hw_device *hwdev);
> +
> + /*
> + * Set a new mode in hardware. Requires the hardware to be in
> + * configuration mode before this function is called.
> + */
> + void (*modeset)(struct malidp_hw_device *hwdev, struct videomode *m);
> +
> + /*
> + * Calculate the required rotation memory given the active area
> + * and the buffer format.
> + */
> + int (*rotmem_required)(struct malidp_hw_device *hwdev, u16 w, u16 h, u32 fmt);
> +
> + u8 features;
> +
> + u8 min_line_size;
> + u16 max_line_size;
> +
> + /* size of memory used for rotating layers, up to two banks available */
> + u32 rotation_memory[2];
> +};
> +
> +/* Supported variants of the hardware */
> +enum {
> + MALIDP_500 = 0,
> + MALIDP_550,
> + MALIDP_650,
> + /* keep the next entry last */
> + MALIDP_MAX_DEVICES
> +};
> +
> +extern const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES];
> +
> +static inline u32 malidp_hw_read(struct malidp_hw_device *hwdev, u32 reg)
> +{
> + return readl(hwdev->regs + reg);
> +}
> +
> +static inline void malidp_hw_write(struct malidp_hw_device *hwdev,
> + u32 value, u32 reg)
> +{
> + writel(value, hwdev->regs + reg);
> +}
> +
> +static inline void malidp_hw_setbits(struct malidp_hw_device *hwdev,
> + u32 mask, u32 reg)
> +{
> + u32 data = malidp_hw_read(hwdev, reg);
> +
> + data |= mask;
> + malidp_hw_write(hwdev, data, reg);
> +}
> +
> +static inline void malidp_hw_clearbits(struct malidp_hw_device *hwdev,
> + u32 mask, u32 reg)
> +{
> + u32 data = malidp_hw_read(hwdev, reg);
> +
> + data &= ~mask;
> + malidp_hw_write(hwdev, data, reg);
> +}
> +
> +static inline u32 malidp_get_block_base(struct malidp_hw_device *hwdev,
> + u8 block)
> +{
> + switch (block) {
> + case MALIDP_SE_BLOCK:
> + return hwdev->map.se_base;
> + case MALIDP_DC_BLOCK:
> + return hwdev->map.dc_base;
> + }
> +
> + return 0;
> +}
> +
> +static inline void malidp_hw_disable_irq(struct malidp_hw_device *hwdev,
> + u8 block, u32 irq)
> +{
> + u32 base = malidp_get_block_base(hwdev, block);
> +
> + malidp_hw_clearbits(hwdev, irq, base + MALIDP_REG_MASKIRQ);
> +}
> +
> +static inline void malidp_hw_enable_irq(struct malidp_hw_device *hwdev,
> + u8 block, u32 irq)
> +{
> + u32 base = malidp_get_block_base(hwdev, block);
> +
> + malidp_hw_setbits(hwdev, irq, base + MALIDP_REG_MASKIRQ);
> +}
> +
> +int malidp_de_irq_init(struct drm_device *drm, int irq);
> +void malidp_de_irq_fini(struct drm_device *drm);
> +int malidp_se_irq_init(struct drm_device *drm, int irq);
> +void malidp_se_irq_fini(struct drm_device *drm);
> +
> +u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,
> + u8 layer_id, u32 format);
> +
> +/*
> + * background color components are defined as 12bits values,
> + * they will be shifted right when stored on hardware that
> + * supports only 8bits per channel
> + */
> +#define MALIDP_BGND_COLOR_R 0x000
> +#define MALIDP_BGND_COLOR_G 0x000
> +#define MALIDP_BGND_COLOR_B 0x000
> +
> +#endif /* __MALIDP_HW_H__ */
> diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
> new file mode 100644
> index 0000000..f371886
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_planes.c
> @@ -0,0 +1,271 @@
> +/*
> + * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
> + * Author: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP plane manipulation routines.
> + */
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_fb_cma_helper.h>
> +#include <drm/drm_gem_cma_helper.h>
> +#include <drm/drm_plane_helper.h>
> +
> +#include "malidp_hw.h"
> +#include "malidp_drv.h"
> +
> +/* Layer specific register offsets */
> +#define MALIDP_LAYER_FORMAT 0x000
> +#define MALIDP_LAYER_CONTROL 0x004
> +#define LAYER_ENABLE (1 << 0)
> +#define LAYER_ROT_OFFSET 8
> +#define LAYER_H_FLIP (1 << 10)
> +#define LAYER_V_FLIP (1 << 11)
> +#define LAYER_ROT_MASK (0xf << 8)
> +#define MALIDP_LAYER_SIZE 0x00c
> +#define LAYER_H_VAL(x) (((x) & 0x1fff) << 0)
> +#define LAYER_V_VAL(x) (((x) & 0x1fff) << 16)
> +#define MALIDP_LAYER_COMP_SIZE 0x010
> +#define MALIDP_LAYER_OFFSET 0x014
> +#define MALIDP_LAYER_STRIDE 0x018
> +
> +static void malidp_de_plane_destroy(struct drm_plane *plane)
> +{
> + struct malidp_plane *mp = to_malidp_plane(plane);
> +
> + if (mp->base.fb)
> + drm_framebuffer_unreference(mp->base.fb);
> +
> + drm_plane_helper_disable(plane);
> + drm_plane_cleanup(plane);
> + devm_kfree(plane->dev->dev, mp);
> +}
> +
> +static const struct drm_plane_funcs malidp_de_plane_funcs = {
> + .update_plane = drm_atomic_helper_update_plane,
> + .disable_plane = drm_atomic_helper_disable_plane,
> + .destroy = malidp_de_plane_destroy,
> + .reset = drm_atomic_helper_plane_reset,
> + .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
> +};
> +
> +static int malidp_de_plane_check(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + struct malidp_plane *mp = to_malidp_plane(plane);
> + u8 format_id;
> + u32 src_w, src_h;
> +
> + if (!state->crtc || !state->fb)
> + return 0;
> +
> + format_id = malidp_hw_get_format_id(&mp->hwdev->map, mp->layer->id,
> + state->fb->pixel_format);
> + if (format_id == MALIDP_INVALID_FORMAT_ID)
> + return -EINVAL;
> +
> + src_w = state->src_w >> 16;
> + src_h = state->src_h >> 16;
> +
> + if ((state->crtc_w > mp->hwdev->max_line_size) ||
> + (state->crtc_h > mp->hwdev->max_line_size) ||
> + (state->crtc_w < mp->hwdev->min_line_size) ||
> + (state->crtc_h < mp->hwdev->min_line_size) ||
> + (state->crtc_w != src_w) || (state->crtc_h != src_h))
> + return -EINVAL;
> +
> + /* packed RGB888 / BGR888 can't be rotated or flipped */
> + if (state->rotation != BIT(DRM_ROTATE_0) &&
> + (state->fb->pixel_format == DRM_FORMAT_RGB888 ||
> + state->fb->pixel_format == DRM_FORMAT_BGR888))
> + return -EINVAL;
> +
> + mp->rotmem_size = 0;
> + if (state->rotation & MALIDP_ROTATED_MASK) {
> + int val;
> +
> + val = mp->hwdev->rotmem_required(mp->hwdev, state->crtc_h,
> + state->crtc_w,
> + state->fb->pixel_format);
> + if (val < 0)
> + return val;
> +
> + mp->rotmem_size = val;
> + }
> +
> + return 0;
> +}
> +
> +static void malidp_de_plane_update(struct drm_plane *plane,
> + struct drm_plane_state *old_state)
> +{
> + struct drm_gem_cma_object *obj;
> + struct malidp_plane *mp;
> + const struct malidp_hw_regmap *map;
> + u8 format_id;
> + u16 ptr;
> + u32 format, src_w, src_h, dest_w, dest_h, val = 0;
> + int num_planes, i;
> +
> + mp = to_malidp_plane(plane);
> +
> + map = &mp->hwdev->map;
> + format = plane->state->fb->pixel_format;
> + format_id = malidp_hw_get_format_id(map, mp->layer->id, format);
> + num_planes = drm_format_num_planes(format);
> +
> + /* convert src values from Q16 fixed point to integer */
> + src_w = plane->state->src_w >> 16;
> + src_h = plane->state->src_h >> 16;
> + if (plane->state->rotation & MALIDP_ROTATED_MASK) {
> + dest_w = plane->state->crtc_h;
> + dest_h = plane->state->crtc_w;
> + } else {
> + dest_w = plane->state->crtc_w;
> + dest_h = plane->state->crtc_h;
> + }
> +
> + malidp_hw_write(mp->hwdev, format_id, mp->layer->base);
> +
> + for (i = 0; i < num_planes; i++) {
> + /* calculate the offset for the layer's plane registers */
> + ptr = mp->layer->ptr + (i << 4);
> +
> + obj = drm_fb_cma_get_gem_obj(plane->state->fb, i);
> + malidp_hw_write(mp->hwdev, lower_32_bits(obj->paddr), ptr);
> + malidp_hw_write(mp->hwdev, upper_32_bits(obj->paddr), ptr + 4);
> + malidp_hw_write(mp->hwdev, plane->state->fb->pitches[i],
> + mp->layer->base + MALIDP_LAYER_STRIDE);
> + }
> +
> + malidp_hw_write(mp->hwdev, LAYER_H_VAL(src_w) | LAYER_V_VAL(src_h),
> + mp->layer->base + MALIDP_LAYER_SIZE);
> +
> + malidp_hw_write(mp->hwdev, LAYER_H_VAL(dest_w) | LAYER_V_VAL(dest_h),
> + mp->layer->base + MALIDP_LAYER_COMP_SIZE);
> +
> + malidp_hw_write(mp->hwdev, LAYER_H_VAL(plane->state->crtc_x) |
> + LAYER_V_VAL(plane->state->crtc_y),
> + mp->layer->base + MALIDP_LAYER_OFFSET);
> +
> + /* first clear the rotation bits in the register */
> + malidp_hw_clearbits(mp->hwdev, LAYER_ROT_MASK,
> + mp->layer->base + MALIDP_LAYER_CONTROL);
> +
> + /* setup the rotation and axis flip bits */
> + if (plane->state->rotation & DRM_ROTATE_MASK)
> + val = ilog2(plane->state->rotation & DRM_ROTATE_MASK) << LAYER_ROT_OFFSET;
> + if (plane->state->rotation & BIT(DRM_REFLECT_X))
> + val |= LAYER_V_FLIP;
> + if (plane->state->rotation & BIT(DRM_REFLECT_Y))
> + val |= LAYER_H_FLIP;
> +
> + /* set the 'enable layer' bit */
> + val |= LAYER_ENABLE;
> +
> + malidp_hw_setbits(mp->hwdev, val,
> + mp->layer->base + MALIDP_LAYER_CONTROL);
> +}
> +
> +static void malidp_de_plane_disable(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + struct malidp_plane *mp = to_malidp_plane(plane);
> +
> + malidp_hw_clearbits(mp->hwdev, LAYER_ENABLE,
> + mp->layer->base + MALIDP_LAYER_CONTROL);
> +}
> +
> +static const struct drm_plane_helper_funcs malidp_de_plane_helper_funcs = {
> + .atomic_check = malidp_de_plane_check,
> + .atomic_update = malidp_de_plane_update,
> + .atomic_disable = malidp_de_plane_disable,
> +};
> +
> +int malidp_de_planes_init(struct drm_device *drm)
> +{
> + struct malidp_drm *malidp = drm->dev_private;
> + const struct malidp_hw_regmap *map = &malidp->dev->map;
> + struct malidp_plane *plane = NULL;
> + enum drm_plane_type plane_type;
> + unsigned long crtcs = 1 << drm->mode_config.num_crtc;
> + u32 *formats;
> + int ret, i, j, n;
> +
> + formats = kcalloc(map->n_input_formats, sizeof(*formats), GFP_KERNEL);
> + if (!formats) {
> + ret = -ENOMEM;
> + goto cleanup;
> + }
> +
> + for (i = 0; i < map->n_layers; i++) {
> + u8 id = map->layers[i].id;
> +
> + plane = kzalloc(sizeof(*plane), GFP_KERNEL);
> + if (!plane) {
> + ret = -ENOMEM;
> + goto cleanup;
> + }
> +
> + /* build the list of DRM supported formats based on the map */
> + for (n = 0, j = 0; j < map->n_input_formats; j++) {
> + if ((map->input_formats[j].layer & id) == id)
> + formats[n++] = map->input_formats[j].format;
> + }
> +
> + plane_type = (i == 0) ? DRM_PLANE_TYPE_PRIMARY :
> + DRM_PLANE_TYPE_OVERLAY;
> + ret = drm_universal_plane_init(drm, &plane->base, crtcs,
> + &malidp_de_plane_funcs, formats,
> + n, plane_type, NULL);
> + if (ret < 0)
> + goto cleanup;
> +
> + if (!drm->mode_config.rotation_property) {
> + unsigned long flags = BIT(DRM_ROTATE_0) |
> + BIT(DRM_ROTATE_90) |
> + BIT(DRM_ROTATE_180) |
> + BIT(DRM_ROTATE_270) |
> + BIT(DRM_REFLECT_X) |
> + BIT(DRM_REFLECT_Y);
> + drm->mode_config.rotation_property =
> + drm_mode_create_rotation_property(drm, flags);
> + }
> + /* SMART layer can't be rotated */
> + if (drm->mode_config.rotation_property && (id != DE_SMART))
> + drm_object_attach_property(&plane->base.base,
> + drm->mode_config.rotation_property,
> + BIT(DRM_ROTATE_0));
> +
> + drm_plane_helper_add(&plane->base,
> + &malidp_de_plane_helper_funcs);
> + plane->hwdev = malidp->dev;
> + plane->layer = &map->layers[i];
> + }
> +
> + kfree(formats);
> +
> + return 0;
> +
> +cleanup:
> + malidp_de_planes_destroy(drm);
> + kfree(formats);
> +
> + return ret;
> +}
> +
> +void malidp_de_planes_destroy(struct drm_device *drm)
> +{
> + struct drm_plane *p, *pt;
> +
> + list_for_each_entry_safe(p, pt, &drm->mode_config.plane_list, head) {
> + drm_plane_cleanup(p);
> + kfree(p);
> + }
> +}
> diff --git a/drivers/gpu/drm/arm/malidp_regs.h b/drivers/gpu/drm/arm/malidp_regs.h
> new file mode 100644
> index 0000000..73fecb3
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/malidp_regs.h
> @@ -0,0 +1,172 @@
> +/*
> + * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
> + * Author: Liviu Dudau <Liviu.Dudau@xxxxxxx>
> + *
> + * This program is free software and is provided to you under the terms of the
> + * GNU General Public License version 2 as published by the Free Software
> + * Foundation, and any use by you of this program is subject to the terms
> + * of such GNU licence.
> + *
> + * ARM Mali DP500/DP550/DP650 registers definition.
> + */
> +
> +#ifndef __MALIDP_REGS_H__
> +#define __MALIDP_REGS_H__
> +
> +/*
> + * abbreviations used:
> + * - DC - display core (general settings)
> + * - DE - display engine
> + * - SE - scaling engine
> + */
> +
> +/* interrupt bit masks */
> +#define MALIDP_DE_IRQ_UNDERRUN (1 << 0)
> +
> +#define MALIDP500_DE_IRQ_AXI_ERR (1 << 4)
> +#define MALIDP500_DE_IRQ_VSYNC (1 << 5)
> +#define MALIDP500_DE_IRQ_PROG_LINE (1 << 6)
> +#define MALIDP500_DE_IRQ_SATURATION (1 << 7)
> +#define MALIDP500_DE_IRQ_CONF_VALID (1 << 8)
> +#define MALIDP500_DE_IRQ_CONF_MODE (1 << 11)
> +#define MALIDP500_DE_IRQ_CONF_ACTIVE (1 << 17)
> +#define MALIDP500_DE_IRQ_PM_ACTIVE (1 << 18)
> +#define MALIDP500_DE_IRQ_TESTMODE_ACTIVE (1 << 19)
> +#define MALIDP500_DE_IRQ_FORCE_BLNK_ACTIVE (1 << 24)
> +#define MALIDP500_DE_IRQ_AXI_BUSY (1 << 28)
> +#define MALIDP500_DE_IRQ_GLOBAL (1 << 31)
> +#define MALIDP500_SE_IRQ_CONF_MODE (1 << 0)
> +#define MALIDP500_SE_IRQ_CONF_VALID (1 << 4)
> +#define MALIDP500_SE_IRQ_INIT_BUSY (1 << 5)
> +#define MALIDP500_SE_IRQ_AXI_ERROR (1 << 8)
> +#define MALIDP500_SE_IRQ_OVERRUN (1 << 9)
> +#define MALIDP500_SE_IRQ_PROG_LINE1 (1 << 12)
> +#define MALIDP500_SE_IRQ_PROG_LINE2 (1 << 13)
> +#define MALIDP500_SE_IRQ_CONF_ACTIVE (1 << 17)
> +#define MALIDP500_SE_IRQ_PM_ACTIVE (1 << 18)
> +#define MALIDP500_SE_IRQ_AXI_BUSY (1 << 28)
> +#define MALIDP500_SE_IRQ_GLOBAL (1 << 31)
> +
> +#define MALIDP550_DE_IRQ_SATURATION (1 << 8)
> +#define MALIDP550_DE_IRQ_VSYNC (1 << 12)
> +#define MALIDP550_DE_IRQ_PROG_LINE (1 << 13)
> +#define MALIDP550_DE_IRQ_AXI_ERR (1 << 16)
> +#define MALIDP550_SE_IRQ_EOW (1 << 0)
> +#define MALIDP550_SE_IRQ_AXI_ERR (1 << 16)
> +#define MALIDP550_DC_IRQ_CONF_VALID (1 << 0)
> +#define MALIDP550_DC_IRQ_CONF_MODE (1 << 4)
> +#define MALIDP550_DC_IRQ_CONF_ACTIVE (1 << 16)
> +#define MALIDP550_DC_IRQ_DE (1 << 20)
> +#define MALIDP550_DC_IRQ_SE (1 << 24)
> +
> +#define MALIDP650_DE_IRQ_DRIFT (1 << 4)
> +
> +/* bit masks that are common between products */
> +#define MALIDP_CFG_VALID (1 << 0)
> +#define MALIDP_DISP_FUNC_ILACED (1 << 8)
> +
> +/* register offsets for IRQ management */
> +#define MALIDP_REG_STATUS 0x00000
> +#define MALIDP_REG_SETIRQ 0x00004
> +#define MALIDP_REG_MASKIRQ 0x00008
> +#define MALIDP_REG_CLEARIRQ 0x0000c
> +
> +/* register offsets */
> +#define MALIDP_DE_CORE_ID 0x00018
> +#define MALIDP_DE_DISPLAY_FUNC 0x00020
> +
> +/* these offsets are relative to MALIDP5x0_TIMINGS_BASE */
> +#define MALIDP_DE_H_TIMINGS 0x0
> +#define MALIDP_DE_V_TIMINGS 0x4
> +#define MALIDP_DE_SYNC_WIDTH 0x8
> +#define MALIDP_DE_HV_ACTIVE 0xc
> +
> +/* macros to set values into registers */
> +#define MALIDP_DE_H_FRONTPORCH(x) (((x) & 0xfff) << 0)
> +#define MALIDP_DE_H_BACKPORCH(x) (((x) & 0x3ff) << 16)
> +#define MALIDP500_DE_V_FRONTPORCH(x) (((x) & 0xff) << 0)
> +#define MALIDP550_DE_V_FRONTPORCH(x) (((x) & 0xfff) << 0)
> +#define MALIDP_DE_V_BACKPORCH(x) (((x) & 0xff) << 16)
> +#define MALIDP_DE_H_SYNCWIDTH(x) (((x) & 0x3ff) << 0)
> +#define MALIDP_DE_V_SYNCWIDTH(x) (((x) & 0xff) << 16)
> +#define MALIDP_DE_H_ACTIVE(x) (((x) & 0x1fff) << 0)
> +#define MALIDP_DE_V_ACTIVE(x) (((x) & 0x1fff) << 16)
> +
> +/* register offsets and bits specific to DP500 */
> +#define MALIDP500_DC_BASE 0x00000
> +#define MALIDP500_DC_CONTROL 0x0000c
> +#define MALIDP500_DC_CONFIG_REQ (1 << 17)
> +#define MALIDP500_HSYNCPOL (1 << 20)
> +#define MALIDP500_VSYNCPOL (1 << 21)
> +#define MALIDP500_DC_CLEAR_MASK 0x300fff
> +#define MALIDP500_DE_LINE_COUNTER 0x00010
> +#define MALIDP500_DE_AXI_CONTROL 0x00014
> +#define MALIDP500_DE_SECURE_CTRL 0x0001c
> +#define MALIDP500_DE_CHROMA_KEY 0x00024
> +#define MALIDP500_TIMINGS_BASE 0x00028
> +
> +#define MALIDP500_CONFIG_3D 0x00038
> +#define MALIDP500_BGND_COLOR 0x0003c
> +#define MALIDP500_OUTPUT_DEPTH 0x00044
> +#define MALIDP500_YUV_RGB_COEF 0x00048
> +#define MALIDP500_COLOR_ADJ_COEF 0x00078
> +#define MALIDP500_COEF_TABLE_ADDR 0x000a8
> +#define MALIDP500_COEF_TABLE_DATA 0x000ac
> +#define MALIDP500_DE_LV_BASE 0x00100
> +#define MALIDP500_DE_LV_PTR_BASE 0x00124
> +#define MALIDP500_DE_LG1_BASE 0x00200
> +#define MALIDP500_DE_LG1_PTR_BASE 0x0021c
> +#define MALIDP500_DE_LG2_BASE 0x00300
> +#define MALIDP500_DE_LG2_PTR_BASE 0x0031c
> +#define MALIDP500_SE_BASE 0x00c00
> +#define MALIDP500_SE_PTR_BASE 0x00e0c
> +#define MALIDP500_DC_IRQ_BASE 0x00f00
> +#define MALIDP500_CONFIG_VALID 0x00f00
> +#define MALIDP500_CONFIG_ID 0x00fd4
> +
> +/* register offsets and bits specific to DP550/DP650 */
> +#define MALIDP550_DE_CONTROL 0x00010
> +#define MALIDP550_DE_LINE_COUNTER 0x00014
> +#define MALIDP550_DE_AXI_CONTROL 0x00018
> +#define MALIDP550_DE_QOS 0x0001c
> +#define MALIDP550_TIMINGS_BASE 0x00030
> +#define MALIDP550_HSYNCPOL (1 << 12)
> +#define MALIDP550_VSYNCPOL (1 << 28)
> +
> +#define MALIDP550_DE_DISP_SIDEBAND 0x00040
> +#define MALIDP550_DE_BGND_COLOR 0x00044
> +#define MALIDP550_DE_OUTPUT_DEPTH 0x0004c
> +#define MALIDP550_DE_COLOR_COEF 0x00050
> +#define MALIDP550_DE_COEF_TABLE_ADDR 0x00080
> +#define MALIDP550_DE_COEF_TABLE_DATA 0x00084
> +#define MALIDP550_DE_LV1_BASE 0x00100
> +#define MALIDP550_DE_LV1_PTR_BASE 0x00124
> +#define MALIDP550_DE_LV2_BASE 0x00200
> +#define MALIDP550_DE_LV2_PTR_BASE 0x00224
> +#define MALIDP550_DE_LG_BASE 0x00300
> +#define MALIDP550_DE_LG_PTR_BASE 0x0031c
> +#define MALIDP550_DE_LS_BASE 0x00400
> +#define MALIDP550_DE_LS_PTR_BASE 0x0042c
> +#define MALIDP550_DE_PERF_BASE 0x00500
> +#define MALIDP550_SE_BASE 0x08000
> +#define MALIDP550_DC_BASE 0x0c000
> +#define MALIDP550_DC_CONTROL 0x0c010
> +#define MALIDP550_DC_CONFIG_REQ (1 << 16)
> +#define MALIDP550_CONFIG_VALID 0x0c014
> +#define MALIDP550_CONFIG_ID 0x0ffd4
> +
> +/*
> + * Starting with DP550 the register map blocks has been standardised to the
> + * following layout:
> + *
> + * Offset Block registers
> + * 0x00000 Display Engine
> + * 0x08000 Scaling Engine
> + * 0x0c000 Display Core
> + * 0x10000 Secure control
> + *
> + * The old DP500 IP mixes some DC with the DE registers, hence the need
> + * for a mapping structure.
> + */
> +
> +#endif /* __MALIDP_REGS_H__ */
> --
> 2.8.2
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch