[PATCH_V2 5/5] drm: bridge/dw_hdmi: Add jz4780 support
From: Zubair Lutfullah Kakakhel
Date: Mon Mar 09 2015 - 08:44:55 EST
Ingenic JZ4780 hdmi is compatible with dw_hdmi.
Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx>
---
V1 -> V2
Fixed license macro
Rebased to 4.0-rc3
---
drivers/gpu/drm/jz4780/Kconfig | 10 ++
drivers/gpu/drm/jz4780/Makefile | 1 +
drivers/gpu/drm/jz4780/dw_hdmi-jz4780.c | 235 ++++++++++++++++++++++++++++++++
include/drm/bridge/dw_hdmi.h | 1 +
4 files changed, 247 insertions(+)
create mode 100644 drivers/gpu/drm/jz4780/dw_hdmi-jz4780.c
diff --git a/drivers/gpu/drm/jz4780/Kconfig b/drivers/gpu/drm/jz4780/Kconfig
index ae417d1..1dc1ea6 100644
--- a/drivers/gpu/drm/jz4780/Kconfig
+++ b/drivers/gpu/drm/jz4780/Kconfig
@@ -10,3 +10,13 @@ config DRM_JZ4780
Choose this option if you have an Ingenic JZ4780 SoC with LCDC display
controller, for example the MIPS Creator CI20 board
+config JZ4780_DW_HDMI
+ tristate "JZ4780 specific extensions for Synopsys DW HDMI"
+ depends on DRM_JZ4780
+ select DRM_DW_HDMI
+ help
+ This selects support for JZ4780 SoC specific extensions
+ for the Synopsys DesignWare HDMI driver. If you want to
+ enable HDMI on JZ4780 based SoC, you should select this
+ option.n if you have an Ingenic SoC with LCDC display
+ controller, for example the CI20 board
diff --git a/drivers/gpu/drm/jz4780/Makefile b/drivers/gpu/drm/jz4780/Makefile
index 3e896c5..dd89c5b9 100644
--- a/drivers/gpu/drm/jz4780/Makefile
+++ b/drivers/gpu/drm/jz4780/Makefile
@@ -1,3 +1,4 @@
jz4780-y := jz4780_crtc.o jz4780_drv.o
+obj-$(CONFIG_JZ4780_DW_HDMI) += dw_hdmi-jz4780.o
obj-$(CONFIG_DRM_JZ4780) += jz4780.o
diff --git a/drivers/gpu/drm/jz4780/dw_hdmi-jz4780.c b/drivers/gpu/drm/jz4780/dw_hdmi-jz4780.c
new file mode 100644
index 0000000..ce3a318b
--- /dev/null
+++ b/drivers/gpu/drm/jz4780/dw_hdmi-jz4780.c
@@ -0,0 +1,235 @@
+/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * derived from dw_hdmi-imx.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/component.h>
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <drm/bridge/dw_hdmi.h>
+#include <linux/regmap.h>
+#include <drm/drm_of.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_encoder_slave.h>
+
+struct jz4780_hdmi {
+ struct device *dev;
+ struct drm_encoder encoder;
+ struct regmap *regmap;
+};
+
+static const struct dw_hdmi_mpll_config jz4780_mpll_cfg[] = {
+ {
+ 45250000, {
+ { 0x01e0, 0x0000 },
+ { 0x21e1, 0x0000 },
+ { 0x41e2, 0x0000 }
+ },
+ }, {
+ 92500000, {
+ { 0x0140, 0x0005 },
+ { 0x2141, 0x0005 },
+ { 0x4142, 0x0005 },
+ },
+ }, {
+ 148500000, {
+ { 0x00a0, 0x000a },
+ { 0x20a1, 0x000a },
+ { 0x40a2, 0x000a },
+ },
+ }, {
+ ~0UL, {
+ { 0x00a0, 0x000a },
+ { 0x2001, 0x000f },
+ { 0x4002, 0x000f },
+ },
+ }
+};
+
+static const struct dw_hdmi_curr_ctrl jz4780_cur_ctr[] = {
+ /* pixelclk bpp8 bpp10 bpp12 */
+ {
+ 54000000, { 0x091c, 0x091c, 0x06dc },
+ }, {
+ 58400000, { 0x091c, 0x06dc, 0x06dc },
+ }, {
+ 72000000, { 0x06dc, 0x06dc, 0x091c },
+ }, {
+ 74250000, { 0x06dc, 0x0b5c, 0x091c },
+ }, {
+ 118800000, { 0x091c, 0x091c, 0x06dc },
+ }, {
+ 216000000, { 0x06dc, 0x0b5c, 0x091c },
+ }
+};
+
+static const struct dw_hdmi_sym_term jz4780_sym_term[] = {
+ /*pixelclk symbol term*/
+ { 148500000, 0x800d, 0x0005 },
+ { ~0UL, 0x0000, 0x0000 }
+};
+
+static void dw_hdmi_jz4780_encoder_disable(struct drm_encoder *encoder)
+{
+}
+
+static bool dw_hdmi_jz4780_encoder_mode_fixup(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adj_mode)
+{
+ return true;
+}
+
+static void dw_hdmi_jz4780_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adj_mode)
+{
+}
+
+static void dw_hdmi_jz4780_encoder_commit(struct drm_encoder *encoder)
+{
+}
+
+static void dw_hdmi_jz4780_encoder_prepare(struct drm_encoder *encoder)
+{
+}
+
+static struct drm_encoder_helper_funcs dw_hdmi_jz4780_encoder_helper_funcs = {
+ .mode_fixup = dw_hdmi_jz4780_encoder_mode_fixup,
+ .mode_set = dw_hdmi_jz4780_encoder_mode_set,
+ .prepare = dw_hdmi_jz4780_encoder_prepare,
+ .commit = dw_hdmi_jz4780_encoder_commit,
+ .disable = dw_hdmi_jz4780_encoder_disable,
+};
+
+static struct drm_encoder_funcs dw_hdmi_jz4780_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static struct dw_hdmi_plat_data jz4780_hdmi_drv_data = {
+ .mpll_cfg = jz4780_mpll_cfg,
+ .cur_ctr = jz4780_cur_ctr,
+ .sym_term = jz4780_sym_term,
+ .dev_type = JZ4780_HDMI,
+};
+
+static const struct of_device_id dw_hdmi_jz4780_dt_ids[] = {
+ { .compatible = "ingenic,jz4780-hdmi",
+ .data = &jz4780_hdmi_drv_data
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, dw_hdmi_jz4780_dt_ids);
+
+static int dw_hdmi_jz4780_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ const struct dw_hdmi_plat_data *plat_data;
+ const struct of_device_id *match;
+ struct drm_device *drm = data;
+ struct drm_encoder *encoder;
+ struct jz4780_hdmi *hdmi;
+ struct resource *iores;
+ struct clk *isfr_clk;
+ int irq;
+ int ret;
+
+ if (!pdev->dev.of_node)
+ return -ENODEV;
+
+ hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
+ if (!hdmi)
+ return -ENOMEM;
+
+ match = of_match_node(dw_hdmi_jz4780_dt_ids, pdev->dev.of_node);
+ plat_data = match->data;
+ hdmi->dev = &pdev->dev;
+ encoder = &hdmi->encoder;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!iores)
+ return -ENXIO;
+
+ isfr_clk = devm_clk_get(hdmi->dev, "isfr");
+ if (IS_ERR(isfr_clk)) {
+ ret = PTR_ERR(isfr_clk);
+ dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret);
+ return ret;
+ }
+
+ clk_set_rate(isfr_clk, 27000000);
+
+ platform_set_drvdata(pdev, hdmi);
+
+ encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
+ /*
+ * If we failed to find the CRTC(s) which this encoder is
+ * supposed to be connected to, it's because the CRTC has
+ * not been registered yet. Defer probing, and hope that
+ * the required CRTC is added later.
+ */
+ if (encoder->possible_crtcs == 0)
+ return -EPROBE_DEFER;
+
+ drm_encoder_helper_add(encoder, &dw_hdmi_jz4780_encoder_helper_funcs);
+ drm_encoder_init(drm, encoder, &dw_hdmi_jz4780_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS);
+
+ return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
+}
+
+static void dw_hdmi_jz4780_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+
+ return dw_hdmi_unbind(dev, master, data);
+}
+
+static const struct component_ops dw_hdmi_jz4780_ops = {
+ .bind = dw_hdmi_jz4780_bind,
+ .unbind = dw_hdmi_jz4780_unbind,
+};
+
+static int dw_hdmi_jz4780_probe(struct platform_device *pdev)
+{
+
+ return component_add(&pdev->dev, &dw_hdmi_jz4780_ops);
+}
+
+static int dw_hdmi_jz4780_remove(struct platform_device *pdev)
+{
+
+ component_del(&pdev->dev, &dw_hdmi_jz4780_ops);
+
+ return 0;
+}
+
+static struct platform_driver dw_hdmi_jz4780_platform_driver = {
+ .probe = dw_hdmi_jz4780_probe,
+ .remove = dw_hdmi_jz4780_remove,
+ .driver = {
+ .name = "dwhdmi-jz4780",
+ .of_match_table = dw_hdmi_jz4780_dt_ids,
+ },
+};
+
+module_platform_driver(dw_hdmi_jz4780_platform_driver);
+
+MODULE_AUTHOR("Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Ingenic JZ4780 Specific DW-HDMI Driver Extension");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:dwhdmi-jz4780");
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 5a4f490..984adee 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -20,6 +20,7 @@ enum {
};
enum dw_hdmi_devtype {
+ JZ4780_HDMI,
IMX6Q_HDMI,
IMX6DL_HDMI,
RK3288_HDMI,
--
1.9.1
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