drm: imx: imx-hdmi: move imx-hdmi to bridge/dw_hdmi

the original imx hdmi driver is under drm/imx/,
which depends on imx-drm, so move the imx hdmi
driver out to drm/bridge and rename it to dw_hdmi

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 258 insertions, 0 deletions

diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
new file mode 100644
index 000000000000..121d30ca2d44
--- /dev/null
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -0,0 +1,258 @@
+/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
+ *
+ * derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now)
+ *
+ * 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/mfd/syscon.h>
+#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
+#include <drm/bridge/dw_hdmi.h>
+#include <video/imx-ipu-v3.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>
+
+#include "imx-drm.h"
+
+struct imx_hdmi {
+        struct device *dev;
+        struct drm_encoder encoder;
+        struct regmap *regmap;
+};
+
+static const struct dw_hdmi_mpll_config imx_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 imx_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 imx_sym_term[] = {
+        /*pixelclk   symbol   term*/
+        { 148500000, 0x800d, 0x0005 },
+        { ~0UL,      0x0000, 0x0000 }
+};
+
+static int dw_hdmi_imx_parse_dt(struct imx_hdmi *hdmi)
+{
+        struct device_node *np = hdmi->dev->of_node;
+
+        hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr");
+        if (IS_ERR(hdmi->regmap)) {
+                dev_err(hdmi->dev, "Unable to get gpr\n");
+                return PTR_ERR(hdmi->regmap);
+        }
+
+        return 0;
+}
+
+static void dw_hdmi_imx_encoder_disable(struct drm_encoder *encoder)
+{
+}
+
+static bool dw_hdmi_imx_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_imx_encoder_mode_set(struct drm_encoder *encoder,
+                                         struct drm_display_mode *mode,
+                                         struct drm_display_mode *adj_mode)
+{
+}
+
+static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder)
+{
+        struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder);
+        int mux = imx_drm_encoder_get_mux_id(hdmi->dev->of_node, encoder);
+
+        regmap_update_bits(hdmi->regmap, IOMUXC_GPR3,
+                           IMX6Q_GPR3_HDMI_MUX_CTL_MASK,
+                           mux << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT);
+}
+
+static void dw_hdmi_imx_encoder_prepare(struct drm_encoder *encoder)
+{
+        imx_drm_panel_format(encoder, V4L2_PIX_FMT_RGB24);
+}
+
+static struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = {
+        .mode_fixup = dw_hdmi_imx_encoder_mode_fixup,
+        .mode_set   = dw_hdmi_imx_encoder_mode_set,
+        .prepare    = dw_hdmi_imx_encoder_prepare,
+        .commit     = dw_hdmi_imx_encoder_commit,
+        .disable    = dw_hdmi_imx_encoder_disable,
+};
+
+static struct drm_encoder_funcs dw_hdmi_imx_encoder_funcs = {
+        .destroy = drm_encoder_cleanup,
+};
+
+static struct dw_hdmi_plat_data imx6q_hdmi_drv_data = {
+        .mpll_cfg = imx_mpll_cfg,
+        .cur_ctr  = imx_cur_ctr,
+        .sym_term = imx_sym_term,
+        .dev_type = IMX6Q_HDMI,
+};
+
+static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = {
+        .mpll_cfg = imx_mpll_cfg,
+        .cur_ctr  = imx_cur_ctr,
+        .sym_term = imx_sym_term,
+        .dev_type = IMX6DL_HDMI,
+};
+
+static const struct of_device_id dw_hdmi_imx_dt_ids[] = {
+        { .compatible = "fsl,imx6q-hdmi",
+          .data = &imx6q_hdmi_drv_data
+        }, {
+          .compatible = "fsl,imx6dl-hdmi",
+          .data = &imx6dl_hdmi_drv_data
+        },
+        {},
+};
+MODULE_DEVICE_TABLE(of, dw_hdmi_imx_dt_ids);
+
+static int dw_hdmi_imx_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 imx_hdmi *hdmi;
+        struct resource *iores;
+        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_imx_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;
+
+        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;
+
+        ret = dw_hdmi_imx_parse_dt(hdmi);
+        if (ret < 0)
+                return ret;
+
+        drm_encoder_helper_add(encoder, &dw_hdmi_imx_encoder_helper_funcs);
+        drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs,
+                         DRM_MODE_ENCODER_TMDS);
+
+        return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
+}
+
+static void dw_hdmi_imx_unbind(struct device *dev, struct device *master,
+                               void *data)
+{
+        return dw_hdmi_unbind(dev, master, data);
+}
+
+static const struct component_ops dw_hdmi_imx_ops = {
+        .bind   = dw_hdmi_imx_bind,
+        .unbind = dw_hdmi_imx_unbind,
+};
+
+static int dw_hdmi_imx_probe(struct platform_device *pdev)
+{
+        return component_add(&pdev->dev, &dw_hdmi_imx_ops);
+}
+
+static int dw_hdmi_imx_remove(struct platform_device *pdev)
+{
+        component_del(&pdev->dev, &dw_hdmi_imx_ops);
+
+        return 0;
+}
+
+static struct platform_driver dw_hdmi_imx_platform_driver = {
+        .probe  = dw_hdmi_imx_probe,
+        .remove = dw_hdmi_imx_remove,
+        .driver = {
+                .name = "dwhdmi-imx",
+                .of_match_table = dw_hdmi_imx_dt_ids,
+        },
+};
+
+module_platform_driver(dw_hdmi_imx_platform_driver);
+
+MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
+MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
+MODULE_DESCRIPTION("IMX6 Specific DW-HDMI Driver Extension");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:dwhdmi-imx");