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Diffstat (limited to 'drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c')
-rw-r--r--drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c843
1 files changed, 843 insertions, 0 deletions
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
new file mode 100644
index 000000000..f7e7f4e91
--- /dev/null
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -0,0 +1,843 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Traphandler
+ * Copyright (C) 2014 Free Electrons
+ * Copyright (C) 2014 Atmel
+ *
+ * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
+ * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/mfd/atmel-hlcdc.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_dma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_module.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "atmel_hlcdc_dc.h"
+
+#define ATMEL_HLCDC_LAYER_IRQS_OFFSET 8
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9n12_layers[] = {
+ {
+ .name = "base",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x40,
+ .id = 0,
+ .type = ATMEL_HLCDC_BASE_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .xstride = { 2 },
+ .default_color = 3,
+ .general_config = 4,
+ },
+ .clut_offset = 0x400,
+ },
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9n12 = {
+ .min_width = 0,
+ .min_height = 0,
+ .max_width = 1280,
+ .max_height = 860,
+ .max_spw = 0x3f,
+ .max_vpw = 0x3f,
+ .max_hpw = 0xff,
+ .conflicting_output_formats = true,
+ .nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9n12_layers),
+ .layers = atmel_hlcdc_at91sam9n12_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9x5_layers[] = {
+ {
+ .name = "base",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x40,
+ .id = 0,
+ .type = ATMEL_HLCDC_BASE_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .xstride = { 2 },
+ .default_color = 3,
+ .general_config = 4,
+ .disc_pos = 5,
+ .disc_size = 6,
+ },
+ .clut_offset = 0x400,
+ },
+ {
+ .name = "overlay1",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x100,
+ .id = 1,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0x800,
+ },
+ {
+ .name = "high-end-overlay",
+ .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+ .regs_offset = 0x280,
+ .id = 2,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x4c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .memsize = 4,
+ .xstride = { 5, 7 },
+ .pstride = { 6, 8 },
+ .default_color = 9,
+ .chroma_key = 10,
+ .chroma_key_mask = 11,
+ .general_config = 12,
+ .scaler_config = 13,
+ .csc = 14,
+ },
+ .clut_offset = 0x1000,
+ },
+ {
+ .name = "cursor",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x340,
+ .id = 3,
+ .type = ATMEL_HLCDC_CURSOR_LAYER,
+ .max_width = 128,
+ .max_height = 128,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0x1400,
+ },
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9x5 = {
+ .min_width = 0,
+ .min_height = 0,
+ .max_width = 800,
+ .max_height = 600,
+ .max_spw = 0x3f,
+ .max_vpw = 0x3f,
+ .max_hpw = 0xff,
+ .conflicting_output_formats = true,
+ .nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9x5_layers),
+ .layers = atmel_hlcdc_at91sam9x5_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = {
+ {
+ .name = "base",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x40,
+ .id = 0,
+ .type = ATMEL_HLCDC_BASE_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .xstride = { 2 },
+ .default_color = 3,
+ .general_config = 4,
+ .disc_pos = 5,
+ .disc_size = 6,
+ },
+ .clut_offset = 0x600,
+ },
+ {
+ .name = "overlay1",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x140,
+ .id = 1,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0xa00,
+ },
+ {
+ .name = "overlay2",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x240,
+ .id = 2,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0xe00,
+ },
+ {
+ .name = "high-end-overlay",
+ .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+ .regs_offset = 0x340,
+ .id = 3,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x4c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .memsize = 4,
+ .xstride = { 5, 7 },
+ .pstride = { 6, 8 },
+ .default_color = 9,
+ .chroma_key = 10,
+ .chroma_key_mask = 11,
+ .general_config = 12,
+ .scaler_config = 13,
+ .phicoeffs = {
+ .x = 17,
+ .y = 33,
+ },
+ .csc = 14,
+ },
+ .clut_offset = 0x1200,
+ },
+ {
+ .name = "cursor",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x440,
+ .id = 4,
+ .type = ATMEL_HLCDC_CURSOR_LAYER,
+ .max_width = 128,
+ .max_height = 128,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ .scaler_config = 13,
+ },
+ .clut_offset = 0x1600,
+ },
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = {
+ .min_width = 0,
+ .min_height = 0,
+ .max_width = 2048,
+ .max_height = 2048,
+ .max_spw = 0x3f,
+ .max_vpw = 0x3f,
+ .max_hpw = 0x1ff,
+ .conflicting_output_formats = true,
+ .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers),
+ .layers = atmel_hlcdc_sama5d3_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d4_layers[] = {
+ {
+ .name = "base",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x40,
+ .id = 0,
+ .type = ATMEL_HLCDC_BASE_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .xstride = { 2 },
+ .default_color = 3,
+ .general_config = 4,
+ .disc_pos = 5,
+ .disc_size = 6,
+ },
+ .clut_offset = 0x600,
+ },
+ {
+ .name = "overlay1",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x140,
+ .id = 1,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0xa00,
+ },
+ {
+ .name = "overlay2",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x240,
+ .id = 2,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0xe00,
+ },
+ {
+ .name = "high-end-overlay",
+ .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+ .regs_offset = 0x340,
+ .id = 3,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x4c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .memsize = 4,
+ .xstride = { 5, 7 },
+ .pstride = { 6, 8 },
+ .default_color = 9,
+ .chroma_key = 10,
+ .chroma_key_mask = 11,
+ .general_config = 12,
+ .scaler_config = 13,
+ .phicoeffs = {
+ .x = 17,
+ .y = 33,
+ },
+ .csc = 14,
+ },
+ .clut_offset = 0x1200,
+ },
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d4 = {
+ .min_width = 0,
+ .min_height = 0,
+ .max_width = 2048,
+ .max_height = 2048,
+ .max_spw = 0xff,
+ .max_vpw = 0xff,
+ .max_hpw = 0x3ff,
+ .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d4_layers),
+ .layers = atmel_hlcdc_sama5d4_layers,
+};
+
+static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sam9x60_layers[] = {
+ {
+ .name = "base",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x60,
+ .id = 0,
+ .type = ATMEL_HLCDC_BASE_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .xstride = { 2 },
+ .default_color = 3,
+ .general_config = 4,
+ .disc_pos = 5,
+ .disc_size = 6,
+ },
+ .clut_offset = 0x600,
+ },
+ {
+ .name = "overlay1",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x160,
+ .id = 1,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0xa00,
+ },
+ {
+ .name = "overlay2",
+ .formats = &atmel_hlcdc_plane_rgb_formats,
+ .regs_offset = 0x260,
+ .id = 2,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x2c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .xstride = { 4 },
+ .pstride = { 5 },
+ .default_color = 6,
+ .chroma_key = 7,
+ .chroma_key_mask = 8,
+ .general_config = 9,
+ },
+ .clut_offset = 0xe00,
+ },
+ {
+ .name = "high-end-overlay",
+ .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
+ .regs_offset = 0x360,
+ .id = 3,
+ .type = ATMEL_HLCDC_OVERLAY_LAYER,
+ .cfgs_offset = 0x4c,
+ .layout = {
+ .pos = 2,
+ .size = 3,
+ .memsize = 4,
+ .xstride = { 5, 7 },
+ .pstride = { 6, 8 },
+ .default_color = 9,
+ .chroma_key = 10,
+ .chroma_key_mask = 11,
+ .general_config = 12,
+ .scaler_config = 13,
+ .phicoeffs = {
+ .x = 17,
+ .y = 33,
+ },
+ .csc = 14,
+ },
+ .clut_offset = 0x1200,
+ },
+};
+
+static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sam9x60 = {
+ .min_width = 0,
+ .min_height = 0,
+ .max_width = 2048,
+ .max_height = 2048,
+ .max_spw = 0xff,
+ .max_vpw = 0xff,
+ .max_hpw = 0x3ff,
+ .fixed_clksrc = true,
+ .nlayers = ARRAY_SIZE(atmel_hlcdc_sam9x60_layers),
+ .layers = atmel_hlcdc_sam9x60_layers,
+};
+
+static const struct of_device_id atmel_hlcdc_of_match[] = {
+ {
+ .compatible = "atmel,at91sam9n12-hlcdc",
+ .data = &atmel_hlcdc_dc_at91sam9n12,
+ },
+ {
+ .compatible = "atmel,at91sam9x5-hlcdc",
+ .data = &atmel_hlcdc_dc_at91sam9x5,
+ },
+ {
+ .compatible = "atmel,sama5d2-hlcdc",
+ .data = &atmel_hlcdc_dc_sama5d4,
+ },
+ {
+ .compatible = "atmel,sama5d3-hlcdc",
+ .data = &atmel_hlcdc_dc_sama5d3,
+ },
+ {
+ .compatible = "atmel,sama5d4-hlcdc",
+ .data = &atmel_hlcdc_dc_sama5d4,
+ },
+ {
+ .compatible = "microchip,sam9x60-hlcdc",
+ .data = &atmel_hlcdc_dc_sam9x60,
+ },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, atmel_hlcdc_of_match);
+
+enum drm_mode_status
+atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
+ const struct drm_display_mode *mode)
+{
+ int vfront_porch = mode->vsync_start - mode->vdisplay;
+ int vback_porch = mode->vtotal - mode->vsync_end;
+ int vsync_len = mode->vsync_end - mode->vsync_start;
+ int hfront_porch = mode->hsync_start - mode->hdisplay;
+ int hback_porch = mode->htotal - mode->hsync_end;
+ int hsync_len = mode->hsync_end - mode->hsync_start;
+
+ if (hsync_len > dc->desc->max_spw + 1 || hsync_len < 1)
+ return MODE_HSYNC;
+
+ if (vsync_len > dc->desc->max_spw + 1 || vsync_len < 1)
+ return MODE_VSYNC;
+
+ if (hfront_porch > dc->desc->max_hpw + 1 || hfront_porch < 1 ||
+ hback_porch > dc->desc->max_hpw + 1 || hback_porch < 1 ||
+ mode->hdisplay < 1)
+ return MODE_H_ILLEGAL;
+
+ if (vfront_porch > dc->desc->max_vpw + 1 || vfront_porch < 1 ||
+ vback_porch > dc->desc->max_vpw || vback_porch < 0 ||
+ mode->vdisplay < 1)
+ return MODE_V_ILLEGAL;
+
+ return MODE_OK;
+}
+
+static void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer *layer)
+{
+ if (!layer)
+ return;
+
+ if (layer->desc->type == ATMEL_HLCDC_BASE_LAYER ||
+ layer->desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
+ layer->desc->type == ATMEL_HLCDC_CURSOR_LAYER)
+ atmel_hlcdc_plane_irq(atmel_hlcdc_layer_to_plane(layer));
+}
+
+static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data)
+{
+ struct drm_device *dev = data;
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ unsigned long status;
+ unsigned int imr, isr;
+ int i;
+
+ regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr);
+ regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
+ status = imr & isr;
+ if (!status)
+ return IRQ_NONE;
+
+ if (status & ATMEL_HLCDC_SOF)
+ atmel_hlcdc_crtc_irq(dc->crtc);
+
+ for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
+ if (ATMEL_HLCDC_LAYER_STATUS(i) & status)
+ atmel_hlcdc_layer_irq(dc->layers[i]);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev)
+{
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ unsigned int cfg = 0;
+ int i;
+
+ /* Enable interrupts on activated layers */
+ for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
+ if (dc->layers[i])
+ cfg |= ATMEL_HLCDC_LAYER_STATUS(i);
+ }
+
+ regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg);
+}
+
+static void atmel_hlcdc_dc_irq_disable(struct drm_device *dev)
+{
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ unsigned int isr;
+
+ regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff);
+ regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
+}
+
+static int atmel_hlcdc_dc_irq_install(struct drm_device *dev, unsigned int irq)
+{
+ int ret;
+
+ atmel_hlcdc_dc_irq_disable(dev);
+
+ ret = devm_request_irq(dev->dev, irq, atmel_hlcdc_dc_irq_handler, 0,
+ dev->driver->name, dev);
+ if (ret)
+ return ret;
+
+ atmel_hlcdc_dc_irq_postinstall(dev);
+
+ return 0;
+}
+
+static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
+{
+ atmel_hlcdc_dc_irq_disable(dev);
+}
+
+static const struct drm_mode_config_funcs mode_config_funcs = {
+ .fb_create = drm_gem_fb_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
+{
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+ int ret;
+
+ drm_mode_config_init(dev);
+
+ ret = atmel_hlcdc_create_outputs(dev);
+ if (ret) {
+ dev_err(dev->dev, "failed to create HLCDC outputs: %d\n", ret);
+ return ret;
+ }
+
+ ret = atmel_hlcdc_create_planes(dev);
+ if (ret) {
+ dev_err(dev->dev, "failed to create planes: %d\n", ret);
+ return ret;
+ }
+
+ ret = atmel_hlcdc_crtc_create(dev);
+ if (ret) {
+ dev_err(dev->dev, "failed to create crtc\n");
+ return ret;
+ }
+
+ dev->mode_config.min_width = dc->desc->min_width;
+ dev->mode_config.min_height = dc->desc->min_height;
+ dev->mode_config.max_width = dc->desc->max_width;
+ dev->mode_config.max_height = dc->desc->max_height;
+ dev->mode_config.funcs = &mode_config_funcs;
+ dev->mode_config.async_page_flip = true;
+
+ return 0;
+}
+
+static int atmel_hlcdc_dc_load(struct drm_device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev->dev);
+ const struct of_device_id *match;
+ struct atmel_hlcdc_dc *dc;
+ int ret;
+
+ match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node);
+ if (!match) {
+ dev_err(&pdev->dev, "invalid compatible string\n");
+ return -ENODEV;
+ }
+
+ if (!match->data) {
+ dev_err(&pdev->dev, "invalid hlcdc description\n");
+ return -EINVAL;
+ }
+
+ dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL);
+ if (!dc)
+ return -ENOMEM;
+
+ dc->desc = match->data;
+ dc->hlcdc = dev_get_drvdata(dev->dev->parent);
+ dev->dev_private = dc;
+
+ ret = clk_prepare_enable(dc->hlcdc->periph_clk);
+ if (ret) {
+ dev_err(dev->dev, "failed to enable periph_clk\n");
+ return ret;
+ }
+
+ pm_runtime_enable(dev->dev);
+
+ ret = drm_vblank_init(dev, 1);
+ if (ret < 0) {
+ dev_err(dev->dev, "failed to initialize vblank\n");
+ goto err_periph_clk_disable;
+ }
+
+ ret = atmel_hlcdc_dc_modeset_init(dev);
+ if (ret < 0) {
+ dev_err(dev->dev, "failed to initialize mode setting\n");
+ goto err_periph_clk_disable;
+ }
+
+ drm_mode_config_reset(dev);
+
+ pm_runtime_get_sync(dev->dev);
+ ret = atmel_hlcdc_dc_irq_install(dev, dc->hlcdc->irq);
+ pm_runtime_put_sync(dev->dev);
+ if (ret < 0) {
+ dev_err(dev->dev, "failed to install IRQ handler\n");
+ goto err_periph_clk_disable;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ drm_kms_helper_poll_init(dev);
+
+ return 0;
+
+err_periph_clk_disable:
+ pm_runtime_disable(dev->dev);
+ clk_disable_unprepare(dc->hlcdc->periph_clk);
+
+ return ret;
+}
+
+static void atmel_hlcdc_dc_unload(struct drm_device *dev)
+{
+ struct atmel_hlcdc_dc *dc = dev->dev_private;
+
+ drm_kms_helper_poll_fini(dev);
+ drm_atomic_helper_shutdown(dev);
+ drm_mode_config_cleanup(dev);
+
+ pm_runtime_get_sync(dev->dev);
+ atmel_hlcdc_dc_irq_uninstall(dev);
+ pm_runtime_put_sync(dev->dev);
+
+ dev->dev_private = NULL;
+
+ pm_runtime_disable(dev->dev);
+ clk_disable_unprepare(dc->hlcdc->periph_clk);
+}
+
+DEFINE_DRM_GEM_DMA_FOPS(fops);
+
+static const struct drm_driver atmel_hlcdc_dc_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ DRM_GEM_DMA_DRIVER_OPS,
+ .fops = &fops,
+ .name = "atmel-hlcdc",
+ .desc = "Atmel HLCD Controller DRM",
+ .date = "20141504",
+ .major = 1,
+ .minor = 0,
+};
+
+static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
+{
+ struct drm_device *ddev;
+ int ret;
+
+ ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
+ if (IS_ERR(ddev))
+ return PTR_ERR(ddev);
+
+ ret = atmel_hlcdc_dc_load(ddev);
+ if (ret)
+ goto err_put;
+
+ ret = drm_dev_register(ddev, 0);
+ if (ret)
+ goto err_unload;
+
+ drm_fbdev_generic_setup(ddev, 24);
+
+ return 0;
+
+err_unload:
+ atmel_hlcdc_dc_unload(ddev);
+
+err_put:
+ drm_dev_put(ddev);
+
+ return ret;
+}
+
+static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
+{
+ struct drm_device *ddev = platform_get_drvdata(pdev);
+
+ drm_dev_unregister(ddev);
+ atmel_hlcdc_dc_unload(ddev);
+ drm_dev_put(ddev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
+{
+ struct drm_device *drm_dev = dev_get_drvdata(dev);
+ struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
+ struct regmap *regmap = dc->hlcdc->regmap;
+ struct drm_atomic_state *state;
+
+ state = drm_atomic_helper_suspend(drm_dev);
+ if (IS_ERR(state))
+ return PTR_ERR(state);
+
+ dc->suspend.state = state;
+
+ regmap_read(regmap, ATMEL_HLCDC_IMR, &dc->suspend.imr);
+ regmap_write(regmap, ATMEL_HLCDC_IDR, dc->suspend.imr);
+ clk_disable_unprepare(dc->hlcdc->periph_clk);
+
+ return 0;
+}
+
+static int atmel_hlcdc_dc_drm_resume(struct device *dev)
+{
+ struct drm_device *drm_dev = dev_get_drvdata(dev);
+ struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
+
+ clk_prepare_enable(dc->hlcdc->periph_clk);
+ regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, dc->suspend.imr);
+
+ return drm_atomic_helper_resume(drm_dev, dc->suspend.state);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops,
+ atmel_hlcdc_dc_drm_suspend, atmel_hlcdc_dc_drm_resume);
+
+static const struct of_device_id atmel_hlcdc_dc_of_match[] = {
+ { .compatible = "atmel,hlcdc-display-controller" },
+ { },
+};
+
+static struct platform_driver atmel_hlcdc_dc_platform_driver = {
+ .probe = atmel_hlcdc_dc_drm_probe,
+ .remove = atmel_hlcdc_dc_drm_remove,
+ .driver = {
+ .name = "atmel-hlcdc-display-controller",
+ .pm = &atmel_hlcdc_dc_drm_pm_ops,
+ .of_match_table = atmel_hlcdc_dc_of_match,
+ },
+};
+drm_module_platform_driver(atmel_hlcdc_dc_platform_driver);
+
+MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>");
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
+MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:atmel-hlcdc-dc");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 00:08:56 +0000