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-rw-r--r--drivers/phy/mediatek/Kconfig12
-rw-r--r--drivers/phy/mediatek/Makefile2
-rw-r--r--drivers/phy/mediatek/phy-mtk-mipi-csi-0-5-rx-reg.h62
-rw-r--r--drivers/phy/mediatek/phy-mtk-mipi-csi-0-5.c294
4 files changed, 370 insertions, 0 deletions
diff --git a/drivers/phy/mediatek/Kconfig b/drivers/phy/mediatek/Kconfig
index 3125ecb5d119..3849b7c87d28 100644
--- a/drivers/phy/mediatek/Kconfig
+++ b/drivers/phy/mediatek/Kconfig
@@ -58,6 +58,18 @@ config PHY_MTK_HDMI
help
Support HDMI PHY for Mediatek SoCs.
+config PHY_MTK_MIPI_CSI_0_5
+ tristate "MediaTek MIPI CSI CD-PHY v0.5 Driver"
+ depends on ARCH_MEDIATEK || COMPILE_TEST
+ depends on OF
+ select GENERIC_PHY
+ help
+ Enable this to support the MIPI CSI CD-PHY receiver version 0.5.
+ The driver supports multiple CSI cdphy ports simultaneously.
+
+ To compile this driver as a module, choose M here: the
+ module will be called phy-mtk-mipi-csi-0-5.
+
config PHY_MTK_MIPI_DSI
tristate "MediaTek MIPI-DSI Driver"
depends on ARCH_MEDIATEK || COMPILE_TEST
diff --git a/drivers/phy/mediatek/Makefile b/drivers/phy/mediatek/Makefile
index c9a50395533e..f6e24a47e081 100644
--- a/drivers/phy/mediatek/Makefile
+++ b/drivers/phy/mediatek/Makefile
@@ -15,6 +15,8 @@ phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8173.o
phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8195.o
obj-$(CONFIG_PHY_MTK_HDMI) += phy-mtk-hdmi-drv.o
+obj-$(CONFIG_PHY_MTK_MIPI_CSI_0_5) += phy-mtk-mipi-csi-0-5.o
+
phy-mtk-mipi-dsi-drv-y := phy-mtk-mipi-dsi.o
phy-mtk-mipi-dsi-drv-y += phy-mtk-mipi-dsi-mt8173.o
phy-mtk-mipi-dsi-drv-y += phy-mtk-mipi-dsi-mt8183.o
diff --git a/drivers/phy/mediatek/phy-mtk-mipi-csi-0-5-rx-reg.h b/drivers/phy/mediatek/phy-mtk-mipi-csi-0-5-rx-reg.h
new file mode 100644
index 000000000000..97b4c27a1699
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-mipi-csi-0-5-rx-reg.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2023, MediaTek Inc.
+ * Copyright (c) 2023, BayLibre Inc.
+ */
+
+#ifndef __PHY_MTK_MIPI_CSI_V_0_5_RX_REG_H__
+#define __PHY_MTK_MIPI_CSI_V_0_5_RX_REG_H__
+
+/*
+ * CSI1 and CSI2 are identical, and similar to CSI0. All CSIX macros are
+ * applicable to the three PHYs. Where differences exist, they are denoted by
+ * macro names using CSI0 and CSI1, the latter being applicable to CSI1 and
+ * CSI2 alike.
+ */
+
+#define MIPI_RX_ANA00_CSIXA 0x0000
+#define RG_CSI0A_CPHY_EN BIT(0)
+#define RG_CSIXA_EQ_PROTECT_EN BIT(1)
+#define RG_CSIXA_BG_LPF_EN BIT(2)
+#define RG_CSIXA_BG_CORE_EN BIT(3)
+#define RG_CSIXA_DPHY_L0_CKMODE_EN BIT(5)
+#define RG_CSIXA_DPHY_L0_CKSEL BIT(6)
+#define RG_CSIXA_DPHY_L1_CKMODE_EN BIT(8)
+#define RG_CSIXA_DPHY_L1_CKSEL BIT(9)
+#define RG_CSIXA_DPHY_L2_CKMODE_EN BIT(11)
+#define RG_CSIXA_DPHY_L2_CKSEL BIT(12)
+
+#define MIPI_RX_ANA18_CSIXA 0x0018
+#define RG_CSI0A_L0_T0AB_EQ_IS GENMASK(5, 4)
+#define RG_CSI0A_L0_T0AB_EQ_BW GENMASK(7, 6)
+#define RG_CSI0A_L1_T1AB_EQ_IS GENMASK(21, 20)
+#define RG_CSI0A_L1_T1AB_EQ_BW GENMASK(23, 22)
+#define RG_CSI0A_L2_T1BC_EQ_IS GENMASK(21, 20)
+#define RG_CSI0A_L2_T1BC_EQ_BW GENMASK(23, 22)
+#define RG_CSI1A_L0_EQ_IS GENMASK(5, 4)
+#define RG_CSI1A_L0_EQ_BW GENMASK(7, 6)
+#define RG_CSI1A_L1_EQ_IS GENMASK(21, 20)
+#define RG_CSI1A_L1_EQ_BW GENMASK(23, 22)
+#define RG_CSI1A_L2_EQ_IS GENMASK(5, 4)
+#define RG_CSI1A_L2_EQ_BW GENMASK(7, 6)
+
+#define MIPI_RX_ANA1C_CSIXA 0x001c
+#define MIPI_RX_ANA20_CSI0A 0x0020
+
+#define MIPI_RX_ANA24_CSIXA 0x0024
+#define RG_CSIXA_RESERVE GENMASK(31, 24)
+
+#define MIPI_RX_ANA40_CSIXA 0x0040
+#define RG_CSIXA_CPHY_FMCK_SEL GENMASK(1, 0)
+#define RG_CSIXA_ASYNC_OPTION GENMASK(7, 4)
+#define RG_CSIXA_CPHY_SPARE GENMASK(31, 16)
+
+#define MIPI_RX_WRAPPER80_CSIXA 0x0080
+#define CSR_CSI_RST_MODE GENMASK(17, 16)
+
+#define MIPI_RX_ANAA8_CSIXA 0x00a8
+#define RG_CSIXA_CDPHY_L0_T0_BYTECK_INVERT BIT(0)
+#define RG_CSIXA_DPHY_L1_BYTECK_INVERT BIT(1)
+#define RG_CSIXA_CDPHY_L2_T1_BYTECK_INVERT BIT(2)
+
+#endif
diff --git a/drivers/phy/mediatek/phy-mtk-mipi-csi-0-5.c b/drivers/phy/mediatek/phy-mtk-mipi-csi-0-5.c
new file mode 100644
index 000000000000..972c129185f7
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-mipi-csi-0-5.c
@@ -0,0 +1,294 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MediaTek MIPI CSI v0.5 driver
+ *
+ * Copyright (c) 2023, MediaTek Inc.
+ * Copyright (c) 2023, BayLibre Inc.
+ */
+
+#include <dt-bindings/phy/phy.h>
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "phy-mtk-io.h"
+#include "phy-mtk-mipi-csi-0-5-rx-reg.h"
+
+#define CSIXB_OFFSET 0x1000
+
+struct mtk_mipi_cdphy_port {
+ struct device *dev;
+ void __iomem *base;
+ struct phy *phy;
+ u32 type;
+ u32 mode;
+ u32 num_lanes;
+};
+
+enum PHY_TYPE {
+ DPHY = 0,
+ CPHY,
+ CDPHY,
+};
+
+static void mtk_phy_csi_cdphy_ana_eq_tune(void __iomem *base)
+{
+ mtk_phy_update_field(base + MIPI_RX_ANA18_CSIXA, RG_CSI0A_L0_T0AB_EQ_IS, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA18_CSIXA, RG_CSI0A_L0_T0AB_EQ_BW, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA1C_CSIXA, RG_CSI0A_L1_T1AB_EQ_IS, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA1C_CSIXA, RG_CSI0A_L1_T1AB_EQ_BW, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA20_CSI0A, RG_CSI0A_L2_T1BC_EQ_IS, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA20_CSI0A, RG_CSI0A_L2_T1BC_EQ_BW, 1);
+
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA18_CSIXA, RG_CSI0A_L0_T0AB_EQ_IS, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA18_CSIXA, RG_CSI0A_L0_T0AB_EQ_BW, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA1C_CSIXA, RG_CSI0A_L1_T1AB_EQ_IS, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA1C_CSIXA, RG_CSI0A_L1_T1AB_EQ_BW, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA20_CSI0A, RG_CSI0A_L2_T1BC_EQ_IS, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA20_CSI0A, RG_CSI0A_L2_T1BC_EQ_BW, 1);
+}
+
+static void mtk_phy_csi_dphy_ana_eq_tune(void __iomem *base)
+{
+ mtk_phy_update_field(base + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L0_EQ_IS, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L0_EQ_BW, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L1_EQ_IS, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L1_EQ_BW, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA1C_CSIXA, RG_CSI1A_L2_EQ_IS, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA1C_CSIXA, RG_CSI1A_L2_EQ_BW, 1);
+
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L0_EQ_IS, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L0_EQ_BW, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L1_EQ_IS, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA18_CSIXA, RG_CSI1A_L1_EQ_BW, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA1C_CSIXA, RG_CSI1A_L2_EQ_IS, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA1C_CSIXA, RG_CSI1A_L2_EQ_BW, 1);
+}
+
+static int mtk_mipi_phy_power_on(struct phy *phy)
+{
+ struct mtk_mipi_cdphy_port *port = phy_get_drvdata(phy);
+ void __iomem *base = port->base;
+
+ /*
+ * The driver currently supports DPHY and CD-PHY phys,
+ * but the only mode supported is DPHY,
+ * so CD-PHY capable phys must be configured in DPHY mode
+ */
+ if (port->type == CDPHY) {
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSI0A_CPHY_EN, 0);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA,
+ RG_CSI0A_CPHY_EN, 0);
+ }
+
+ /*
+ * Lane configuration:
+ *
+ * Only 4 data + 1 clock is supported for now with the following mapping:
+ *
+ * CSIXA_LNR0 --> D2
+ * CSIXA_LNR1 --> D0
+ * CSIXA_LNR2 --> C
+ * CSIXB_LNR0 --> D1
+ * CSIXB_LNR1 --> D3
+ */
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L0_CKMODE_EN, 0);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L0_CKSEL, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L1_CKMODE_EN, 0);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L1_CKSEL, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L2_CKMODE_EN, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L2_CKSEL, 1);
+
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA,
+ RG_CSIXA_DPHY_L0_CKMODE_EN, 0);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L0_CKSEL, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA,
+ RG_CSIXA_DPHY_L1_CKMODE_EN, 0);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L1_CKSEL, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA,
+ RG_CSIXA_DPHY_L2_CKMODE_EN, 0);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_DPHY_L2_CKSEL, 1);
+
+ /* Byte clock invert */
+ mtk_phy_update_field(base + MIPI_RX_ANAA8_CSIXA, RG_CSIXA_CDPHY_L0_T0_BYTECK_INVERT, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANAA8_CSIXA, RG_CSIXA_DPHY_L1_BYTECK_INVERT, 1);
+ mtk_phy_update_field(base + MIPI_RX_ANAA8_CSIXA, RG_CSIXA_CDPHY_L2_T1_BYTECK_INVERT, 1);
+
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANAA8_CSIXA,
+ RG_CSIXA_CDPHY_L0_T0_BYTECK_INVERT, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANAA8_CSIXA,
+ RG_CSIXA_DPHY_L1_BYTECK_INVERT, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANAA8_CSIXA,
+ RG_CSIXA_CDPHY_L2_T1_BYTECK_INVERT, 1);
+
+ /* Start ANA EQ tuning */
+ if (port->type == CDPHY)
+ mtk_phy_csi_cdphy_ana_eq_tune(base);
+ else
+ mtk_phy_csi_dphy_ana_eq_tune(base);
+
+ /* End ANA EQ tuning */
+ mtk_phy_set_bits(base + MIPI_RX_ANA40_CSIXA, 0x90);
+
+ mtk_phy_update_field(base + MIPI_RX_ANA24_CSIXA, RG_CSIXA_RESERVE, 0x40);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA24_CSIXA, RG_CSIXA_RESERVE, 0x40);
+ mtk_phy_update_field(base + MIPI_RX_WRAPPER80_CSIXA, CSR_CSI_RST_MODE, 0);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_WRAPPER80_CSIXA, CSR_CSI_RST_MODE, 0);
+ /* ANA power on */
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_CORE_EN, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_CORE_EN, 1);
+ usleep_range(20, 40);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_LPF_EN, 1);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_LPF_EN, 1);
+
+ return 0;
+}
+
+static int mtk_mipi_phy_power_off(struct phy *phy)
+{
+ struct mtk_mipi_cdphy_port *port = phy_get_drvdata(phy);
+ void __iomem *base = port->base;
+
+ /* Disable MIPI BG. */
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_CORE_EN, 0);
+ mtk_phy_update_field(base + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_LPF_EN, 0);
+
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_CORE_EN, 0);
+ mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA00_CSIXA, RG_CSIXA_BG_LPF_EN, 0);
+
+ return 0;
+}
+
+static struct phy *mtk_mipi_cdphy_xlate(struct device *dev,
+ struct of_phandle_args *args)
+{
+ struct mtk_mipi_cdphy_port *priv = dev_get_drvdata(dev);
+
+ /*
+ * If PHY is CD-PHY then we need to get the operating mode
+ * For now only D-PHY mode is supported
+ */
+ if (priv->type == CDPHY) {
+ if (args->args_count != 1) {
+ dev_err(dev, "invalid number of arguments\n");
+ return ERR_PTR(-EINVAL);
+ }
+ switch (args->args[0]) {
+ case PHY_TYPE_DPHY:
+ priv->mode = DPHY;
+ if (priv->num_lanes != 4) {
+ dev_err(dev, "Only 4D1C mode is supported for now!\n");
+ return ERR_PTR(-EINVAL);
+ }
+ break;
+ default:
+ dev_err(dev, "Unsupported PHY type: %i\n", args->args[0]);
+ return ERR_PTR(-EINVAL);
+ }
+ } else {
+ if (args->args_count) {
+ dev_err(dev, "invalid number of arguments\n");
+ return ERR_PTR(-EINVAL);
+ }
+ priv->mode = DPHY;
+ }
+
+ return priv->phy;
+}
+
+static const struct phy_ops mtk_cdphy_ops = {
+ .power_on = mtk_mipi_phy_power_on,
+ .power_off = mtk_mipi_phy_power_off,
+ .owner = THIS_MODULE,
+};
+
+static int mtk_mipi_cdphy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct phy_provider *phy_provider;
+ struct mtk_mipi_cdphy_port *port;
+ struct phy *phy;
+ int ret;
+ u32 phy_type;
+
+ port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
+ if (!port)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, port);
+
+ port->dev = dev;
+
+ port->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(port->base))
+ return PTR_ERR(port->base);
+
+ ret = of_property_read_u32(dev->of_node, "num-lanes", &port->num_lanes);
+ if (ret) {
+ dev_err(dev, "Failed to read num-lanes property: %i\n", ret);
+ return ret;
+ }
+
+ /*
+ * phy-type is optional, if not present, PHY is considered to be CD-PHY
+ */
+ if (device_property_present(dev, "phy-type")) {
+ ret = of_property_read_u32(dev->of_node, "phy-type", &phy_type);
+ if (ret) {
+ dev_err(dev, "Failed to read phy-type property: %i\n", ret);
+ return ret;
+ }
+ switch (phy_type) {
+ case PHY_TYPE_DPHY:
+ port->type = DPHY;
+ break;
+ default:
+ dev_err(dev, "Unsupported PHY type: %i\n", phy_type);
+ return -EINVAL;
+ }
+ } else {
+ port->type = CDPHY;
+ }
+
+ phy = devm_phy_create(dev, NULL, &mtk_cdphy_ops);
+ if (IS_ERR(phy)) {
+ dev_err(dev, "Failed to create PHY: %ld\n", PTR_ERR(phy));
+ return PTR_ERR(phy);
+ }
+
+ port->phy = phy;
+ phy_set_drvdata(phy, port);
+
+ phy_provider = devm_of_phy_provider_register(dev, mtk_mipi_cdphy_xlate);
+ if (IS_ERR(phy_provider)) {
+ dev_err(dev, "Failed to register PHY provider: %ld\n",
+ PTR_ERR(phy_provider));
+ return PTR_ERR(phy_provider);
+ }
+
+ return 0;
+}
+
+static const struct of_device_id mtk_mipi_cdphy_of_match[] = {
+ { .compatible = "mediatek,mt8365-csi-rx" },
+ { /* sentinel */},
+};
+MODULE_DEVICE_TABLE(of, mtk_mipi_cdphy_of_match);
+
+static struct platform_driver mipi_cdphy_pdrv = {
+ .probe = mtk_mipi_cdphy_probe,
+ .driver = {
+ .name = "mtk-mipi-csi-0-5",
+ .of_match_table = mtk_mipi_cdphy_of_match,
+ },
+};
+module_platform_driver(mipi_cdphy_pdrv);
+
+MODULE_DESCRIPTION("MediaTek MIPI CSI CD-PHY v0.5 Driver");
+MODULE_AUTHOR("Louis Kuo <louis.kuo@mediatek.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 09:32:52 +0000