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@@ -0,0 +1,938 @@
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+/*
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+ * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
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+ * Zheng Yang <zhengyang@rock-chips.com>
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+ * Yakir Yang <ykk@rock-chips.com>
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+ *
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+ * This software is licensed under the terms of the GNU General Public
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+ * License version 2, as published by the Free Software Foundation, and
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+ * may be copied, distributed, and modified under those terms.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ */
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+
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+#include <linux/irq.h>
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+#include <linux/clk.h>
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+#include <linux/delay.h>
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+#include <linux/err.h>
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+#include <linux/hdmi.h>
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+#include <linux/mfd/syscon.h>
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+#include <linux/module.h>
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+#include <linux/mutex.h>
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+#include <linux/of_device.h>
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+
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+#include <drm/drm_of.h>
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+#include <drm/drmP.h>
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+#include <drm/drm_atomic_helper.h>
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+#include <drm/drm_crtc_helper.h>
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+#include <drm/drm_edid.h>
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+
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+#include "rockchip_drm_drv.h"
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+#include "rockchip_drm_vop.h"
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+
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+#include "inno_hdmi.h"
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+
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+#define to_inno_hdmi(x) container_of(x, struct inno_hdmi, x)
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+
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+struct hdmi_data_info {
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+ int vic;
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+ bool sink_is_hdmi;
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+ bool sink_has_audio;
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+ unsigned int enc_in_format;
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+ unsigned int enc_out_format;
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+ unsigned int colorimetry;
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+};
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+
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+struct inno_hdmi_i2c {
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+ struct i2c_adapter adap;
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+
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+ u8 ddc_addr;
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+ u8 segment_addr;
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+
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+ struct mutex lock;
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+ struct completion cmp;
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+};
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+
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+struct inno_hdmi {
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+ struct device *dev;
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+ struct drm_device *drm_dev;
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+
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+ int irq;
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+ struct clk *pclk;
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+ void __iomem *regs;
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+
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+ struct drm_connector connector;
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+ struct drm_encoder encoder;
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+
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+ struct inno_hdmi_i2c *i2c;
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+ struct i2c_adapter *ddc;
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+
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+ unsigned int tmds_rate;
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+
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+ struct hdmi_data_info hdmi_data;
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+ struct drm_display_mode previous_mode;
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+};
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+
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+enum {
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+ CSC_ITU601_16_235_TO_RGB_0_255_8BIT,
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+ CSC_ITU601_0_255_TO_RGB_0_255_8BIT,
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+ CSC_ITU709_16_235_TO_RGB_0_255_8BIT,
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+ CSC_RGB_0_255_TO_ITU601_16_235_8BIT,
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+ CSC_RGB_0_255_TO_ITU709_16_235_8BIT,
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+ CSC_RGB_0_255_TO_RGB_16_235_8BIT,
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+};
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+
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+static const char coeff_csc[][24] = {
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+ /*
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+ * YUV2RGB:601 SD mode(Y[16:235], UV[16:240], RGB[0:255]):
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+ * R = 1.164*Y + 1.596*V - 204
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+ * G = 1.164*Y - 0.391*U - 0.813*V + 154
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+ * B = 1.164*Y + 2.018*U - 258
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+ */
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+ {
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+ 0x04, 0xa7, 0x00, 0x00, 0x06, 0x62, 0x02, 0xcc,
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+ 0x04, 0xa7, 0x11, 0x90, 0x13, 0x40, 0x00, 0x9a,
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+ 0x04, 0xa7, 0x08, 0x12, 0x00, 0x00, 0x03, 0x02
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+ },
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+ /*
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+ * YUV2RGB:601 SD mode(YUV[0:255],RGB[0:255]):
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+ * R = Y + 1.402*V - 248
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+ * G = Y - 0.344*U - 0.714*V + 135
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+ * B = Y + 1.772*U - 227
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+ */
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+ {
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+ 0x04, 0x00, 0x00, 0x00, 0x05, 0x9b, 0x02, 0xf8,
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+ 0x04, 0x00, 0x11, 0x60, 0x12, 0xdb, 0x00, 0x87,
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+ 0x04, 0x00, 0x07, 0x16, 0x00, 0x00, 0x02, 0xe3
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+ },
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+ /*
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+ * YUV2RGB:709 HD mode(Y[16:235],UV[16:240],RGB[0:255]):
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+ * R = 1.164*Y + 1.793*V - 248
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+ * G = 1.164*Y - 0.213*U - 0.534*V + 77
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+ * B = 1.164*Y + 2.115*U - 289
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+ */
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+ {
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+ 0x04, 0xa7, 0x00, 0x00, 0x07, 0x2c, 0x02, 0xf8,
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+ 0x04, 0xa7, 0x10, 0xda, 0x12, 0x22, 0x00, 0x4d,
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+ 0x04, 0xa7, 0x08, 0x74, 0x00, 0x00, 0x03, 0x21
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+ },
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+
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+ /*
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+ * RGB2YUV:601 SD mode:
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+ * Cb = -0.291G - 0.148R + 0.439B + 128
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+ * Y = 0.504G + 0.257R + 0.098B + 16
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+ * Cr = -0.368G + 0.439R - 0.071B + 128
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+ */
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+ {
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+ 0x11, 0x5f, 0x01, 0x82, 0x10, 0x23, 0x00, 0x80,
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+ 0x02, 0x1c, 0x00, 0xa1, 0x00, 0x36, 0x00, 0x1e,
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+ 0x11, 0x29, 0x10, 0x59, 0x01, 0x82, 0x00, 0x80
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+ },
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+ /*
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+ * RGB2YUV:709 HD mode:
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+ * Cb = - 0.338G - 0.101R + 0.439B + 128
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+ * Y = 0.614G + 0.183R + 0.062B + 16
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+ * Cr = - 0.399G + 0.439R - 0.040B + 128
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+ */
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+ {
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+ 0x11, 0x98, 0x01, 0xc1, 0x10, 0x28, 0x00, 0x80,
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+ 0x02, 0x74, 0x00, 0xbb, 0x00, 0x3f, 0x00, 0x10,
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+ 0x11, 0x5a, 0x10, 0x67, 0x01, 0xc1, 0x00, 0x80
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+ },
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+ /*
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+ * RGB[0:255]2RGB[16:235]:
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+ * R' = R x (235-16)/255 + 16;
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+ * G' = G x (235-16)/255 + 16;
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+ * B' = B x (235-16)/255 + 16;
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+ */
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+ {
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+ 0x00, 0x00, 0x03, 0x6F, 0x00, 0x00, 0x00, 0x10,
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+ 0x03, 0x6F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
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+ 0x00, 0x00, 0x00, 0x00, 0x03, 0x6F, 0x00, 0x10
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+ },
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+};
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+
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+static inline u8 hdmi_readb(struct inno_hdmi *hdmi, u16 offset)
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+{
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+ return readl_relaxed(hdmi->regs + (offset) * 0x04);
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+}
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+
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+static inline void hdmi_writeb(struct inno_hdmi *hdmi, u16 offset, u32 val)
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+{
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+ writel_relaxed(val, hdmi->regs + (offset) * 0x04);
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+}
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+
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+static inline void hdmi_modb(struct inno_hdmi *hdmi, u16 offset,
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+ u32 msk, u32 val)
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+{
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+ u8 temp = hdmi_readb(hdmi, offset) & ~msk;
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+
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+ temp |= val & msk;
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+ hdmi_writeb(hdmi, offset, temp);
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+}
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+
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+static void inno_hdmi_i2c_init(struct inno_hdmi *hdmi)
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+{
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+ int ddc_bus_freq;
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+
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+ ddc_bus_freq = (hdmi->tmds_rate >> 2) / HDMI_SCL_RATE;
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+
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+ hdmi_writeb(hdmi, DDC_BUS_FREQ_L, ddc_bus_freq & 0xFF);
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+ hdmi_writeb(hdmi, DDC_BUS_FREQ_H, (ddc_bus_freq >> 8) & 0xFF);
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+
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+ /* Clear the EDID interrupt flag and mute the interrupt */
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+ hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
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+ hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
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+}
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+
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+static void inno_hdmi_sys_power(struct inno_hdmi *hdmi, bool enable)
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+{
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+ if (enable)
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+ hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_ON);
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+ else
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+ hdmi_modb(hdmi, HDMI_SYS_CTRL, m_POWER, v_PWR_OFF);
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+}
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+
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+static void inno_hdmi_set_pwr_mode(struct inno_hdmi *hdmi, int mode)
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+{
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+ switch (mode) {
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+ case NORMAL:
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+ inno_hdmi_sys_power(hdmi, false);
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+
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+ hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x6f);
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+ hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0xbb);
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+
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+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
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+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x14);
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+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x10);
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+ hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x0f);
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+ hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x00);
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+ hdmi_writeb(hdmi, HDMI_PHY_SYNC, 0x01);
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+
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+ inno_hdmi_sys_power(hdmi, true);
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+ break;
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+
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+ case LOWER_PWR:
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+ inno_hdmi_sys_power(hdmi, false);
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+ hdmi_writeb(hdmi, HDMI_PHY_DRIVER, 0x00);
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+ hdmi_writeb(hdmi, HDMI_PHY_PRE_EMPHASIS, 0x00);
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+ hdmi_writeb(hdmi, HDMI_PHY_CHG_PWR, 0x00);
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+ hdmi_writeb(hdmi, HDMI_PHY_SYS_CTL, 0x15);
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+
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+ break;
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+
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+ default:
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+ dev_err(hdmi->dev, "Unknown power mode %d\n", mode);
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+ }
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+}
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+
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+static void inno_hdmi_reset(struct inno_hdmi *hdmi)
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+{
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+ u32 val;
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+ u32 msk;
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+
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+ hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_DIGITAL, v_NOT_RST_DIGITAL);
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+ udelay(100);
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+
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+ hdmi_modb(hdmi, HDMI_SYS_CTRL, m_RST_ANALOG, v_NOT_RST_ANALOG);
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+ udelay(100);
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+
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+ msk = m_REG_CLK_INV | m_REG_CLK_SOURCE | m_POWER | m_INT_POL;
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+ val = v_REG_CLK_INV | v_REG_CLK_SOURCE_SYS | v_PWR_ON | v_INT_POL_HIGH;
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+ hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val);
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+
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+ inno_hdmi_set_pwr_mode(hdmi, NORMAL);
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+}
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+
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+static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi, int setup_rc,
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+ union hdmi_infoframe *frame, u32 frame_index,
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+ u32 mask, u32 disable, u32 enable)
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+{
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+ if (mask)
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+ hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, disable);
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+
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+ hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index);
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+
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+ if (setup_rc >= 0) {
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+ u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
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+ ssize_t rc, i;
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+
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+ rc = hdmi_infoframe_pack(frame, packed_frame,
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+ sizeof(packed_frame));
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+ if (rc < 0)
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+ return rc;
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+
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+ for (i = 0; i < rc; i++)
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+ hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i,
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+ packed_frame[i]);
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+
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+ if (mask)
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+ hdmi_modb(hdmi, HDMI_PACKET_SEND_AUTO, mask, enable);
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+ }
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+
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+ return setup_rc;
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+}
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+
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+static int inno_hdmi_config_video_vsi(struct inno_hdmi *hdmi,
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+ struct drm_display_mode *mode)
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+{
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+ union hdmi_infoframe frame;
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+ int rc;
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+
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+ rc = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
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+ mode);
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+
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+ return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_VSI,
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+ m_PACKET_VSI_EN, v_PACKET_VSI_EN(0), v_PACKET_VSI_EN(1));
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+}
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+
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+static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
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+ struct drm_display_mode *mode)
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+{
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+ union hdmi_infoframe frame;
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+ int rc;
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+
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+ rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
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+
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+ if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV444)
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+ frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
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+ else if (hdmi->hdmi_data.enc_out_format == HDMI_COLORSPACE_YUV422)
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+ frame.avi.colorspace = HDMI_COLORSPACE_YUV422;
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+ else
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+ frame.avi.colorspace = HDMI_COLORSPACE_RGB;
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+
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+ return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0);
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+}
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+
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+static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
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+{
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+ struct hdmi_data_info *data = &hdmi->hdmi_data;
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+ int c0_c2_change = 0;
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+ int csc_enable = 0;
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+ int csc_mode = 0;
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+ int auto_csc = 0;
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+ int value;
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+ int i;
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+
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+ /* Input video mode is SDR RGB24bit, data enable signal from external */
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+ hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL1, v_DE_EXTERNAL |
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+ v_VIDEO_INPUT_FORMAT(VIDEO_INPUT_SDR_RGB444));
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+
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+ /* Input color hardcode to RGB, and output color hardcode to RGB888 */
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+ value = v_VIDEO_INPUT_BITS(VIDEO_INPUT_8BITS) |
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+ v_VIDEO_OUTPUT_COLOR(0) |
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+ v_VIDEO_INPUT_CSP(0);
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+ hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value);
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+
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+ if (data->enc_in_format == data->enc_out_format) {
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+ if ((data->enc_in_format == HDMI_COLORSPACE_RGB) ||
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+ (data->enc_in_format >= HDMI_COLORSPACE_YUV444)) {
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+ value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1);
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+ hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
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+
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+ hdmi_modb(hdmi, HDMI_VIDEO_CONTRL,
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+ m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP,
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+ v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
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+ v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
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+ return 0;
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+ }
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+ }
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+
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+ if (data->colorimetry == HDMI_COLORIMETRY_ITU_601) {
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+ if ((data->enc_in_format == HDMI_COLORSPACE_RGB) &&
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+ (data->enc_out_format == HDMI_COLORSPACE_YUV444)) {
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+ csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
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+ auto_csc = AUTO_CSC_DISABLE;
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+ c0_c2_change = C0_C2_CHANGE_DISABLE;
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+ csc_enable = v_CSC_ENABLE;
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|
|
+ } else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) &&
|
|
|
+ (data->enc_out_format == HDMI_COLORSPACE_RGB)) {
|
|
|
+ csc_mode = CSC_ITU601_16_235_TO_RGB_0_255_8BIT;
|
|
|
+ auto_csc = AUTO_CSC_ENABLE;
|
|
|
+ c0_c2_change = C0_C2_CHANGE_DISABLE;
|
|
|
+ csc_enable = v_CSC_DISABLE;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if ((data->enc_in_format == HDMI_COLORSPACE_RGB) &&
|
|
|
+ (data->enc_out_format == HDMI_COLORSPACE_YUV444)) {
|
|
|
+ csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
|
|
|
+ auto_csc = AUTO_CSC_DISABLE;
|
|
|
+ c0_c2_change = C0_C2_CHANGE_DISABLE;
|
|
|
+ csc_enable = v_CSC_ENABLE;
|
|
|
+ } else if ((data->enc_in_format == HDMI_COLORSPACE_YUV444) &&
|
|
|
+ (data->enc_out_format == HDMI_COLORSPACE_RGB)) {
|
|
|
+ csc_mode = CSC_ITU709_16_235_TO_RGB_0_255_8BIT;
|
|
|
+ auto_csc = AUTO_CSC_ENABLE;
|
|
|
+ c0_c2_change = C0_C2_CHANGE_DISABLE;
|
|
|
+ csc_enable = v_CSC_DISABLE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ for (i = 0; i < 24; i++)
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_CSC_COEF + i,
|
|
|
+ coeff_csc[csc_mode][i]);
|
|
|
+
|
|
|
+ value = v_SOF_DISABLE | csc_enable | v_COLOR_DEPTH_NOT_INDICATED(1);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
|
|
|
+ hdmi_modb(hdmi, HDMI_VIDEO_CONTRL, m_VIDEO_AUTO_CSC |
|
|
|
+ m_VIDEO_C0_C2_SWAP, v_VIDEO_AUTO_CSC(auto_csc) |
|
|
|
+ v_VIDEO_C0_C2_SWAP(c0_c2_change));
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
|
|
|
+ struct drm_display_mode *mode)
|
|
|
+{
|
|
|
+ int value;
|
|
|
+
|
|
|
+ /* Set detail external video timing polarity and interlace mode */
|
|
|
+ value = v_EXTERANL_VIDEO(1);
|
|
|
+ value |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
|
|
|
+ v_HSYNC_POLARITY(1) : v_HSYNC_POLARITY(0);
|
|
|
+ value |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
|
|
|
+ v_VSYNC_POLARITY(1) : v_VSYNC_POLARITY(0);
|
|
|
+ value |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
|
|
|
+ v_INETLACE(1) : v_INETLACE(0);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_TIMING_CTL, value);
|
|
|
+
|
|
|
+ /* Set detail external video timing */
|
|
|
+ value = mode->htotal;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_L, value & 0xFF);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HTOTAL_H, (value >> 8) & 0xFF);
|
|
|
+
|
|
|
+ value = mode->htotal - mode->hdisplay;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_L, value & 0xFF);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HBLANK_H, (value >> 8) & 0xFF);
|
|
|
+
|
|
|
+ value = mode->hsync_start - mode->hdisplay;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_L, value & 0xFF);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDELAY_H, (value >> 8) & 0xFF);
|
|
|
+
|
|
|
+ value = mode->hsync_end - mode->hsync_start;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_L, value & 0xFF);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_HDURATION_H, (value >> 8) & 0xFF);
|
|
|
+
|
|
|
+ value = mode->vtotal;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_L, value & 0xFF);
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VTOTAL_H, (value >> 8) & 0xFF);
|
|
|
+
|
|
|
+ value = mode->vtotal - mode->vdisplay;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VBLANK, value & 0xFF);
|
|
|
+
|
|
|
+ value = mode->vsync_start - mode->vdisplay;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDELAY, value & 0xFF);
|
|
|
+
|
|
|
+ value = mode->vsync_end - mode->vsync_start;
|
|
|
+ hdmi_writeb(hdmi, HDMI_VIDEO_EXT_VDURATION, value & 0xFF);
|
|
|
+
|
|
|
+ hdmi_writeb(hdmi, HDMI_PHY_PRE_DIV_RATIO, 0x1e);
|
|
|
+ hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_LOW, 0x2c);
|
|
|
+ hdmi_writeb(hdmi, HDMI_PHY_FEEDBACK_DIV_RATIO_HIGH, 0x01);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_setup(struct inno_hdmi *hdmi,
|
|
|
+ struct drm_display_mode *mode)
|
|
|
+{
|
|
|
+ hdmi->hdmi_data.vic = drm_match_cea_mode(mode);
|
|
|
+
|
|
|
+ hdmi->hdmi_data.enc_in_format = HDMI_COLORSPACE_RGB;
|
|
|
+ hdmi->hdmi_data.enc_out_format = HDMI_COLORSPACE_RGB;
|
|
|
+
|
|
|
+ if ((hdmi->hdmi_data.vic == 6) || (hdmi->hdmi_data.vic == 7) ||
|
|
|
+ (hdmi->hdmi_data.vic == 21) || (hdmi->hdmi_data.vic == 22) ||
|
|
|
+ (hdmi->hdmi_data.vic == 2) || (hdmi->hdmi_data.vic == 3) ||
|
|
|
+ (hdmi->hdmi_data.vic == 17) || (hdmi->hdmi_data.vic == 18))
|
|
|
+ hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_601;
|
|
|
+ else
|
|
|
+ hdmi->hdmi_data.colorimetry = HDMI_COLORIMETRY_ITU_709;
|
|
|
+
|
|
|
+ /* Mute video and audio output */
|
|
|
+ hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
|
|
|
+ v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1));
|
|
|
+
|
|
|
+ /* Set HDMI Mode */
|
|
|
+ hdmi_writeb(hdmi, HDMI_HDCP_CTRL,
|
|
|
+ v_HDMI_DVI(hdmi->hdmi_data.sink_is_hdmi));
|
|
|
+
|
|
|
+ inno_hdmi_config_video_timing(hdmi, mode);
|
|
|
+
|
|
|
+ inno_hdmi_config_video_csc(hdmi);
|
|
|
+
|
|
|
+ if (hdmi->hdmi_data.sink_is_hdmi) {
|
|
|
+ inno_hdmi_config_video_avi(hdmi, mode);
|
|
|
+ inno_hdmi_config_video_vsi(hdmi, mode);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * When IP controller have configured to an accurate video
|
|
|
+ * timing, then the TMDS clock source would be switched to
|
|
|
+ * DCLK_LCDC, so we need to init the TMDS rate to mode pixel
|
|
|
+ * clock rate, and reconfigure the DDC clock.
|
|
|
+ */
|
|
|
+ hdmi->tmds_rate = mode->clock * 1000;
|
|
|
+ inno_hdmi_i2c_init(hdmi);
|
|
|
+
|
|
|
+ /* Unmute video and audio output */
|
|
|
+ hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
|
|
|
+ v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0));
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void inno_hdmi_encoder_mode_set(struct drm_encoder *encoder,
|
|
|
+ struct drm_display_mode *mode,
|
|
|
+ struct drm_display_mode *adj_mode)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = to_inno_hdmi(encoder);
|
|
|
+
|
|
|
+ inno_hdmi_setup(hdmi, adj_mode);
|
|
|
+
|
|
|
+ /* Store the display mode for plugin/DPMS poweron events */
|
|
|
+ memcpy(&hdmi->previous_mode, adj_mode, sizeof(hdmi->previous_mode));
|
|
|
+}
|
|
|
+
|
|
|
+static void inno_hdmi_encoder_enable(struct drm_encoder *encoder)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = to_inno_hdmi(encoder);
|
|
|
+
|
|
|
+ rockchip_drm_crtc_mode_config(encoder->crtc, DRM_MODE_CONNECTOR_HDMIA,
|
|
|
+ ROCKCHIP_OUT_MODE_P888);
|
|
|
+
|
|
|
+ inno_hdmi_set_pwr_mode(hdmi, NORMAL);
|
|
|
+}
|
|
|
+
|
|
|
+static void inno_hdmi_encoder_disable(struct drm_encoder *encoder)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = to_inno_hdmi(encoder);
|
|
|
+
|
|
|
+ inno_hdmi_set_pwr_mode(hdmi, LOWER_PWR);
|
|
|
+}
|
|
|
+
|
|
|
+static bool inno_hdmi_encoder_mode_fixup(struct drm_encoder *encoder,
|
|
|
+ const struct drm_display_mode *mode,
|
|
|
+ struct drm_display_mode *adj_mode)
|
|
|
+{
|
|
|
+ return true;
|
|
|
+}
|
|
|
+
|
|
|
+static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
|
|
|
+ .enable = inno_hdmi_encoder_enable,
|
|
|
+ .disable = inno_hdmi_encoder_disable,
|
|
|
+ .mode_fixup = inno_hdmi_encoder_mode_fixup,
|
|
|
+ .mode_set = inno_hdmi_encoder_mode_set,
|
|
|
+};
|
|
|
+
|
|
|
+static struct drm_encoder_funcs inno_hdmi_encoder_funcs = {
|
|
|
+ .destroy = drm_encoder_cleanup,
|
|
|
+};
|
|
|
+
|
|
|
+static enum drm_connector_status
|
|
|
+inno_hdmi_connector_detect(struct drm_connector *connector, bool force)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = to_inno_hdmi(connector);
|
|
|
+
|
|
|
+ return (hdmi_readb(hdmi, HDMI_STATUS) & m_HOTPLUG) ?
|
|
|
+ connector_status_connected : connector_status_disconnected;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_connector_get_modes(struct drm_connector *connector)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = to_inno_hdmi(connector);
|
|
|
+ struct edid *edid;
|
|
|
+ int ret = 0;
|
|
|
+
|
|
|
+ if (!hdmi->ddc)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ edid = drm_get_edid(connector, hdmi->ddc);
|
|
|
+ if (edid) {
|
|
|
+ hdmi->hdmi_data.sink_is_hdmi = drm_detect_hdmi_monitor(edid);
|
|
|
+ hdmi->hdmi_data.sink_has_audio = drm_detect_monitor_audio(edid);
|
|
|
+ drm_mode_connector_update_edid_property(connector, edid);
|
|
|
+ ret = drm_add_edid_modes(connector, edid);
|
|
|
+ kfree(edid);
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static enum drm_mode_status
|
|
|
+inno_hdmi_connector_mode_valid(struct drm_connector *connector,
|
|
|
+ struct drm_display_mode *mode)
|
|
|
+{
|
|
|
+ return MODE_OK;
|
|
|
+}
|
|
|
+
|
|
|
+static struct drm_encoder *
|
|
|
+inno_hdmi_connector_best_encoder(struct drm_connector *connector)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = to_inno_hdmi(connector);
|
|
|
+
|
|
|
+ return &hdmi->encoder;
|
|
|
+}
|
|
|
+
|
|
|
+static int
|
|
|
+inno_hdmi_probe_single_connector_modes(struct drm_connector *connector,
|
|
|
+ uint32_t maxX, uint32_t maxY)
|
|
|
+{
|
|
|
+ return drm_helper_probe_single_connector_modes(connector, 1920, 1080);
|
|
|
+}
|
|
|
+
|
|
|
+static void inno_hdmi_connector_destroy(struct drm_connector *connector)
|
|
|
+{
|
|
|
+ drm_connector_unregister(connector);
|
|
|
+ drm_connector_cleanup(connector);
|
|
|
+}
|
|
|
+
|
|
|
+static struct drm_connector_funcs inno_hdmi_connector_funcs = {
|
|
|
+ .dpms = drm_atomic_helper_connector_dpms,
|
|
|
+ .fill_modes = inno_hdmi_probe_single_connector_modes,
|
|
|
+ .detect = inno_hdmi_connector_detect,
|
|
|
+ .destroy = inno_hdmi_connector_destroy,
|
|
|
+ .reset = drm_atomic_helper_connector_reset,
|
|
|
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
|
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
|
+};
|
|
|
+
|
|
|
+static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = {
|
|
|
+ .get_modes = inno_hdmi_connector_get_modes,
|
|
|
+ .mode_valid = inno_hdmi_connector_mode_valid,
|
|
|
+ .best_encoder = inno_hdmi_connector_best_encoder,
|
|
|
+};
|
|
|
+
|
|
|
+static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
|
|
|
+{
|
|
|
+ struct drm_encoder *encoder = &hdmi->encoder;
|
|
|
+ struct device *dev = hdmi->dev;
|
|
|
+
|
|
|
+ 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, &inno_hdmi_encoder_helper_funcs);
|
|
|
+ drm_encoder_init(drm, encoder, &inno_hdmi_encoder_funcs,
|
|
|
+ DRM_MODE_ENCODER_TMDS, NULL);
|
|
|
+
|
|
|
+ hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
|
|
|
+
|
|
|
+ drm_connector_helper_add(&hdmi->connector,
|
|
|
+ &inno_hdmi_connector_helper_funcs);
|
|
|
+ drm_connector_init(drm, &hdmi->connector, &inno_hdmi_connector_funcs,
|
|
|
+ DRM_MODE_CONNECTOR_HDMIA);
|
|
|
+
|
|
|
+ drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static irqreturn_t inno_hdmi_i2c_irq(struct inno_hdmi *hdmi)
|
|
|
+{
|
|
|
+ struct inno_hdmi_i2c *i2c = hdmi->i2c;
|
|
|
+ u8 stat;
|
|
|
+
|
|
|
+ stat = hdmi_readb(hdmi, HDMI_INTERRUPT_STATUS1);
|
|
|
+ if (!(stat & m_INT_EDID_READY))
|
|
|
+ return IRQ_NONE;
|
|
|
+
|
|
|
+ /* Clear HDMI EDID interrupt flag */
|
|
|
+ hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
|
|
|
+
|
|
|
+ complete(&i2c->cmp);
|
|
|
+
|
|
|
+ return IRQ_HANDLED;
|
|
|
+}
|
|
|
+
|
|
|
+static irqreturn_t inno_hdmi_hardirq(int irq, void *dev_id)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = dev_id;
|
|
|
+ irqreturn_t ret = IRQ_NONE;
|
|
|
+ u8 interrupt;
|
|
|
+
|
|
|
+ if (hdmi->i2c)
|
|
|
+ ret = inno_hdmi_i2c_irq(hdmi);
|
|
|
+
|
|
|
+ interrupt = hdmi_readb(hdmi, HDMI_STATUS);
|
|
|
+ if (interrupt & m_INT_HOTPLUG) {
|
|
|
+ hdmi_modb(hdmi, HDMI_STATUS, m_INT_HOTPLUG, m_INT_HOTPLUG);
|
|
|
+ ret = IRQ_WAKE_THREAD;
|
|
|
+ }
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static irqreturn_t inno_hdmi_irq(int irq, void *dev_id)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = dev_id;
|
|
|
+
|
|
|
+ drm_helper_hpd_irq_event(hdmi->connector.dev);
|
|
|
+
|
|
|
+ return IRQ_HANDLED;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_i2c_read(struct inno_hdmi *hdmi, struct i2c_msg *msgs)
|
|
|
+{
|
|
|
+ int length = msgs->len;
|
|
|
+ u8 *buf = msgs->buf;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = wait_for_completion_timeout(&hdmi->i2c->cmp, HZ / 10);
|
|
|
+ if (!ret)
|
|
|
+ return -EAGAIN;
|
|
|
+
|
|
|
+ while (length--)
|
|
|
+ *buf++ = hdmi_readb(hdmi, HDMI_EDID_FIFO_ADDR);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_i2c_write(struct inno_hdmi *hdmi, struct i2c_msg *msgs)
|
|
|
+{
|
|
|
+ /*
|
|
|
+ * The DDC module only support read EDID message, so
|
|
|
+ * we assume that each word write to this i2c adapter
|
|
|
+ * should be the offset of EDID word address.
|
|
|
+ */
|
|
|
+ if ((msgs->len != 1) ||
|
|
|
+ ((msgs->addr != DDC_ADDR) && (msgs->addr != DDC_SEGMENT_ADDR)))
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ reinit_completion(&hdmi->i2c->cmp);
|
|
|
+
|
|
|
+ if (msgs->addr == DDC_SEGMENT_ADDR)
|
|
|
+ hdmi->i2c->segment_addr = msgs->buf[0];
|
|
|
+ if (msgs->addr == DDC_ADDR)
|
|
|
+ hdmi->i2c->ddc_addr = msgs->buf[0];
|
|
|
+
|
|
|
+ /* Set edid fifo first addr */
|
|
|
+ hdmi_writeb(hdmi, HDMI_EDID_FIFO_OFFSET, 0x00);
|
|
|
+
|
|
|
+ /* Set edid word address 0x00/0x80 */
|
|
|
+ hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr);
|
|
|
+
|
|
|
+ /* Set edid segment pointer */
|
|
|
+ hdmi_writeb(hdmi, HDMI_EDID_SEGMENT_POINTER, hdmi->i2c->segment_addr);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_i2c_xfer(struct i2c_adapter *adap,
|
|
|
+ struct i2c_msg *msgs, int num)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = i2c_get_adapdata(adap);
|
|
|
+ struct inno_hdmi_i2c *i2c = hdmi->i2c;
|
|
|
+ int i, ret = 0;
|
|
|
+
|
|
|
+ mutex_lock(&i2c->lock);
|
|
|
+
|
|
|
+ /* Clear the EDID interrupt flag and unmute the interrupt */
|
|
|
+ hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, m_INT_EDID_READY);
|
|
|
+ hdmi_writeb(hdmi, HDMI_INTERRUPT_STATUS1, m_INT_EDID_READY);
|
|
|
+
|
|
|
+ for (i = 0; i < num; i++) {
|
|
|
+ dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n",
|
|
|
+ i + 1, num, msgs[i].len, msgs[i].flags);
|
|
|
+
|
|
|
+ if (msgs[i].flags & I2C_M_RD)
|
|
|
+ ret = inno_hdmi_i2c_read(hdmi, &msgs[i]);
|
|
|
+ else
|
|
|
+ ret = inno_hdmi_i2c_write(hdmi, &msgs[i]);
|
|
|
+
|
|
|
+ if (ret < 0)
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!ret)
|
|
|
+ ret = num;
|
|
|
+
|
|
|
+ /* Mute HDMI EDID interrupt */
|
|
|
+ hdmi_writeb(hdmi, HDMI_INTERRUPT_MASK1, 0);
|
|
|
+
|
|
|
+ mutex_unlock(&i2c->lock);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static u32 inno_hdmi_i2c_func(struct i2c_adapter *adapter)
|
|
|
+{
|
|
|
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct i2c_algorithm inno_hdmi_algorithm = {
|
|
|
+ .master_xfer = inno_hdmi_i2c_xfer,
|
|
|
+ .functionality = inno_hdmi_i2c_func,
|
|
|
+};
|
|
|
+
|
|
|
+static struct i2c_adapter *inno_hdmi_i2c_adapter(struct inno_hdmi *hdmi)
|
|
|
+{
|
|
|
+ struct i2c_adapter *adap;
|
|
|
+ struct inno_hdmi_i2c *i2c;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
|
|
|
+ if (!i2c)
|
|
|
+ return ERR_PTR(-ENOMEM);
|
|
|
+
|
|
|
+ mutex_init(&i2c->lock);
|
|
|
+ init_completion(&i2c->cmp);
|
|
|
+
|
|
|
+ adap = &i2c->adap;
|
|
|
+ adap->class = I2C_CLASS_DDC;
|
|
|
+ adap->owner = THIS_MODULE;
|
|
|
+ adap->dev.parent = hdmi->dev;
|
|
|
+ adap->dev.of_node = hdmi->dev->of_node;
|
|
|
+ adap->algo = &inno_hdmi_algorithm;
|
|
|
+ strlcpy(adap->name, "Inno HDMI", sizeof(adap->name));
|
|
|
+ i2c_set_adapdata(adap, hdmi);
|
|
|
+
|
|
|
+ ret = i2c_add_adapter(adap);
|
|
|
+ if (ret) {
|
|
|
+ dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
|
|
|
+ devm_kfree(hdmi->dev, i2c);
|
|
|
+ return ERR_PTR(ret);
|
|
|
+ }
|
|
|
+
|
|
|
+ hdmi->i2c = i2c;
|
|
|
+
|
|
|
+ dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name);
|
|
|
+
|
|
|
+ return adap;
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_bind(struct device *dev, struct device *master,
|
|
|
+ void *data)
|
|
|
+{
|
|
|
+ struct platform_device *pdev = to_platform_device(dev);
|
|
|
+ struct drm_device *drm = data;
|
|
|
+ struct inno_hdmi *hdmi;
|
|
|
+ struct resource *iores;
|
|
|
+ int irq;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
|
|
|
+ if (!hdmi)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ hdmi->dev = dev;
|
|
|
+ hdmi->drm_dev = drm;
|
|
|
+
|
|
|
+ iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
+ if (!iores)
|
|
|
+ return -ENXIO;
|
|
|
+
|
|
|
+ hdmi->regs = devm_ioremap_resource(dev, iores);
|
|
|
+ if (IS_ERR(hdmi->regs))
|
|
|
+ return PTR_ERR(hdmi->regs);
|
|
|
+
|
|
|
+ hdmi->pclk = devm_clk_get(hdmi->dev, "pclk");
|
|
|
+ if (IS_ERR(hdmi->pclk)) {
|
|
|
+ dev_err(hdmi->dev, "Unable to get HDMI pclk clk\n");
|
|
|
+ return PTR_ERR(hdmi->pclk);
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = clk_prepare_enable(hdmi->pclk);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(hdmi->dev, "Cannot enable HDMI pclk clock: %d\n", ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ irq = platform_get_irq(pdev, 0);
|
|
|
+ if (irq < 0)
|
|
|
+ return irq;
|
|
|
+
|
|
|
+ inno_hdmi_reset(hdmi);
|
|
|
+
|
|
|
+ hdmi->ddc = inno_hdmi_i2c_adapter(hdmi);
|
|
|
+ if (IS_ERR(hdmi->ddc)) {
|
|
|
+ hdmi->ddc = NULL;
|
|
|
+ return PTR_ERR(hdmi->ddc);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * When IP controller haven't configured to an accurate video
|
|
|
+ * timing, then the TMDS clock source would be switched to
|
|
|
+ * PCLK_HDMI, so we need to init the TMDS rate to PCLK rate,
|
|
|
+ * and reconfigure the DDC clock.
|
|
|
+ */
|
|
|
+ hdmi->tmds_rate = clk_get_rate(hdmi->pclk);
|
|
|
+ inno_hdmi_i2c_init(hdmi);
|
|
|
+
|
|
|
+ ret = inno_hdmi_register(drm, hdmi);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ dev_set_drvdata(dev, hdmi);
|
|
|
+
|
|
|
+ /* Unmute hotplug interrupt */
|
|
|
+ hdmi_modb(hdmi, HDMI_STATUS, m_MASK_INT_HOTPLUG, v_MASK_INT_HOTPLUG(1));
|
|
|
+
|
|
|
+ ret = devm_request_threaded_irq(dev, irq, inno_hdmi_hardirq,
|
|
|
+ inno_hdmi_irq, IRQF_SHARED,
|
|
|
+ dev_name(dev), hdmi);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static void inno_hdmi_unbind(struct device *dev, struct device *master,
|
|
|
+ void *data)
|
|
|
+{
|
|
|
+ struct inno_hdmi *hdmi = dev_get_drvdata(dev);
|
|
|
+
|
|
|
+ hdmi->connector.funcs->destroy(&hdmi->connector);
|
|
|
+ hdmi->encoder.funcs->destroy(&hdmi->encoder);
|
|
|
+
|
|
|
+ clk_disable_unprepare(hdmi->pclk);
|
|
|
+ i2c_put_adapter(hdmi->ddc);
|
|
|
+}
|
|
|
+
|
|
|
+static const struct component_ops inno_hdmi_ops = {
|
|
|
+ .bind = inno_hdmi_bind,
|
|
|
+ .unbind = inno_hdmi_unbind,
|
|
|
+};
|
|
|
+
|
|
|
+static int inno_hdmi_probe(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ return component_add(&pdev->dev, &inno_hdmi_ops);
|
|
|
+}
|
|
|
+
|
|
|
+static int inno_hdmi_remove(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ component_del(&pdev->dev, &inno_hdmi_ops);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct of_device_id inno_hdmi_dt_ids[] = {
|
|
|
+ { .compatible = "rockchip,rk3036-inno-hdmi",
|
|
|
+ },
|
|
|
+ {},
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(of, inno_hdmi_dt_ids);
|
|
|
+
|
|
|
+static struct platform_driver inno_hdmi_driver = {
|
|
|
+ .probe = inno_hdmi_probe,
|
|
|
+ .remove = inno_hdmi_remove,
|
|
|
+ .driver = {
|
|
|
+ .name = "innohdmi-rockchip",
|
|
|
+ .of_match_table = inno_hdmi_dt_ids,
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+module_platform_driver(inno_hdmi_driver);
|
|
|
+
|
|
|
+MODULE_AUTHOR("Zheng Yang <zhengyang@rock-chips.com>");
|
|
|
+MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
|
|
|
+MODULE_DESCRIPTION("Rockchip Specific INNO-HDMI Driver");
|
|
|
+MODULE_LICENSE("GPL v2");
|
|
|
+MODULE_ALIAS("platform:innohdmi-rockchip");
|