--- /dev/null
+ARM Mali-DP
+
+The following bindings apply to a family of Display Processors sold as
+licensable IP by ARM Ltd. The bindings describe the Mali DP500, DP550 and
+DP650 processors that offer multiple composition layers, support for
+rotation and scaling output.
+
+Required properties:
+ - compatible: should be one of
+ "arm,mali-dp500"
+ "arm,mali-dp550"
+ "arm,mali-dp650"
+ depending on the particular implementation present in the hardware
+ - reg: Physical base address and size of the block of registers used by
+ the processor.
+ - interrupts: Interrupt list, as defined in ../interrupt-controller/interrupts.txt,
+ interrupt client nodes.
+ - interrupt-names: name of the engine inside the processor that will
+ use the corresponding interrupt. Should be one of "DE" or "SE".
+ - clocks: A list of phandle + clock-specifier pairs, one for each entry
+ in 'clock-names'
+ - clock-names: A list of clock names. It should contain:
+ - "pclk": for the APB interface clock
+ - "aclk": for the AXI interface clock
+ - "mclk": for the main processor clock
+ - "pxlclk": for the pixel clock feeding the output PLL of the processor.
+ - arm,malidp-output-port-lines: Array of u8 values describing the number
+ of output lines per channel (R, G and B).
+
+Required sub-nodes:
+ - port: The Mali DP connection to an encoder input port. The connection
+ is modelled using the OF graph bindings specified in
+ Documentation/devicetree/bindings/graph.txt
+
+Optional properties:
+ - memory-region: phandle to a node describing memory (see
+ Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt)
+ to be used for the framebuffer; if not present, the framebuffer may
+ be located anywhere in memory.
+
+
+Example:
+
+/ {
+ ...
+
+ dp0: malidp@6f200000 {
+ compatible = "arm,mali-dp650";
+ reg = <0 0x6f200000 0 0x20000>;
+ memory-region = <&display_reserved>;
+ interrupts = <0 168 IRQ_TYPE_LEVEL_HIGH>,
+ <0 168 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "DE", "SE";
+ clocks = <&oscclk2>, <&fpgaosc0>, <&fpgaosc1>, <&fpgaosc1>;
+ clock-names = "pxlclk", "mclk", "aclk", "pclk";
+ arm,malidp-output-port-lines = /bits/ 8 <8 8 8>;
+ port {
+ dp0_output: endpoint {
+ remote-endpoint = <&tda998x_2_input>;
+ };
+ };
+ };
+
+ ...
+};
ARM HDLCD DRM DRIVER
M: Liviu Dudau <liviu.dudau@arm.com>
S: Supported
-F: drivers/gpu/drm/arm/
+F: drivers/gpu/drm/arm/hdlcd_*
F: Documentation/devicetree/bindings/display/arm,hdlcd.txt
+ARM MALI-DP DRM DRIVER
+M: Liviu Dudau <liviu.dudau@arm.com>
+M: Brian Starkey <brian.starkey@arm.com>
+M: Mali DP Maintainers <malidp@foss.arm.com>
+S: Supported
+F: drivers/gpu/drm/arm/
+F: Documentation/devicetree/bindings/display/arm,malidp.txt
+
ARM MFM AND FLOPPY DRIVERS
M: Ian Molton <spyro@f2s.com>
S: Maintained
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.
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
--- /dev/null
+/*
+ * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
+ * Author: Liviu Dudau <Liviu.Dudau@arm.com>
+ *
+ * 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);
+
+ /* 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);
+ drm_crtc_vblank_on(crtc);
+}
+
+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;
+
+ drm_crtc_vblank_off(crtc);
+ 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;
+ const 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_state(plane, pstate, state) {
+ 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_state(plane, pstate, state) {
+ struct malidp_plane *mp = to_malidp_plane(plane);
+ struct malidp_plane_state *ms = to_malidp_plane_state(pstate);
+
+ 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 (ms->rotmem_size > rot_mem_usable)
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+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,
+};
+
+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;
+}
--- /dev/null
+/*
+ * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
+ * Author: Liviu Dudau <Liviu.Dudau@arm.com>
+ *
+ * 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;
+
+ drm_fbdev_cma_hotplug_event(malidp->fbdev);
+}
+
+static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state)
+{
+ struct drm_pending_vblank_event *event;
+ struct drm_device *drm = state->dev;
+ struct malidp_drm *malidp = drm->dev_private;
+ int ret = malidp_set_and_wait_config_valid(drm);
+
+ if (ret)
+ DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n");
+
+ event = malidp->crtc.state->event;
+ if (event) {
+ malidp->crtc.state->event = NULL;
+
+ spin_lock_irq(&drm->event_lock);
+ if (drm_crtc_vblank_get(&malidp->crtc) == 0)
+ drm_crtc_arm_vblank_event(&malidp->crtc, event);
+ else
+ drm_crtc_send_vblank_event(&malidp->crtc, event);
+ spin_unlock_irq(&drm->event_lock);
+ }
+ 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, true);
+
+ 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,
+};
+
+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_unlocked = drm_gem_cma_free_object,
+ .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);
+ 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);
+ 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@arm.com>");
+MODULE_DESCRIPTION("ARM Mali DP DRM driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
+ * Author: Liviu Dudau <Liviu.Dudau@arm.com>
+ *
+ * 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;
+};
+
+struct malidp_plane_state {
+ struct drm_plane_state base;
+
+ /* size of the required rotation memory if plane is rotated */
+ u32 rotmem_size;
+};
+
+#define to_malidp_plane(x) container_of(x, struct malidp_plane, base)
+#define to_malidp_plane_state(x) container_of(x, struct malidp_plane_state, 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__ */
--- /dev/null
+/*
+ * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
+ * Author: Liviu Dudau <Liviu.Dudau@arm.com>
+ *
+ * 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);
+}
--- /dev/null
+/*
+ *
+ * (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__ */
--- /dev/null
+/*
+ * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
+ * Author: Liviu Dudau <Liviu.Dudau@arm.com>
+ *
+ * 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);
+}
+
+struct drm_plane_state *malidp_duplicate_plane_state(struct drm_plane *plane)
+{
+ struct malidp_plane_state *state, *m_state;
+
+ if (!plane->state)
+ return NULL;
+
+ state = kmalloc(sizeof(*state), GFP_KERNEL);
+ if (state) {
+ m_state = to_malidp_plane_state(plane->state);
+ __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
+ state->rotmem_size = m_state->rotmem_size;
+ }
+
+ return &state->base;
+}
+
+void malidp_destroy_plane_state(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct malidp_plane_state *m_state = to_malidp_plane_state(state);
+
+ __drm_atomic_helper_plane_destroy_state(state);
+ kfree(m_state);
+}
+
+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 = malidp_duplicate_plane_state,
+ .atomic_destroy_state = malidp_destroy_plane_state,
+};
+
+static int malidp_de_plane_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct malidp_plane *mp = to_malidp_plane(plane);
+ struct malidp_plane_state *ms = to_malidp_plane_state(state);
+ 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;
+
+ ms->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;
+
+ ms->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);
+ }
+}
--- /dev/null
+/*
+ * (C) COPYRIGHT 2016 ARM Limited. All rights reserved.
+ * Author: Liviu Dudau <Liviu.Dudau@arm.com>
+ *
+ * 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__ */
projects / cascardo / linux.git / commitdiff