[PATCH v2 3/8] media: qcom: camss: Add new csiphy driver 2-1-2
From: Depeng Shao
Date: Wed Mar 20 2024 - 10:13:37 EST
From: Yongsheng Li <quic_yon@xxxxxxxxxxx>
The CSIPHY register offset of SM8550 is different with
SM8250, so add a new driver for the SM8550 platform.
Signed-off-by: Yongsheng Li <quic_yon@xxxxxxxxxxx>
Co-developed-by: Depeng Shao <depengs@xxxxxxxxxxxxxxxx>
Signed-off-by: Depeng Shao <quic_depengs@xxxxxxxxxxx>
---
drivers/media/platform/qcom/camss/Makefile | 1 +
.../platform/qcom/camss/camss-csiphy-2-1-2.c | 343 ++++++++++++++++++
.../media/platform/qcom/camss/camss-csiphy.h | 1 +
3 files changed, 345 insertions(+)
create mode 100644 drivers/media/platform/qcom/camss/camss-csiphy-2-1-2.c
diff --git a/drivers/media/platform/qcom/camss/Makefile b/drivers/media/platform/qcom/camss/Makefile
index 0d4389ab312d..28eba4bf3e38 100644
--- a/drivers/media/platform/qcom/camss/Makefile
+++ b/drivers/media/platform/qcom/camss/Makefile
@@ -9,6 +9,7 @@ qcom-camss-objs += \
camss-csid-gen2.o \
camss-csiphy-2ph-1-0.o \
camss-csiphy-3ph-1-0.o \
+ camss-csiphy-2-1-2.o \
camss-csiphy.o \
camss-ispif.o \
camss-vfe-4-1.o \
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy-2-1-2.c b/drivers/media/platform/qcom/camss/camss-csiphy-2-1-2.c
new file mode 100644
index 000000000000..df7860d7a4f4
--- /dev/null
+++ b/drivers/media/platform/qcom/camss/camss-csiphy-2-1-2.c
@@ -0,0 +1,343 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * camss-csiphy-2-1-2.c
+ *
+ * Qualcomm MSM Camera Subsystem - CSIPHY Module 3phase v2.0
+ *
+ * Copyright (c) 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include "camss.h"
+#include "camss-csiphy.h"
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+
+
+#define CSIPHY_CMN_CSI_COMMON_CTRLn(n) (0x1000 + 0x4 * (n))
+#define CSIPHY_CMN_CSI_COMMON_CTRL5_CLK_ENABLE BIT(7)
+#define CSIPHY_CMN_CSI_COMMON_CTRL6_COMMON_PWRDN_B BIT(0)
+#define CSIPHY_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID BIT(1)
+#define CSIPHY_CMN_CSI_COMMON_CTRL7_CONTROL 0x7A
+#define CSIPHY_CMN_CSI_COMMON_CTRL0_PHY_SW_RESET BIT(0)
+#define CSIPHY_CMN_CSI_COMMON_CTRL0_SWI_ENABLE_LANESYNC BIT(1)
+#define CSIPHY_CMN_CSI_COMMON_STATUSn(n) (0x10B0 + 0x4 * (n))
+
+#define CSIPHY_DEFAULT_PARAMS 0
+#define CSIPHY_LANE_ENABLE 1
+#define CSIPHY_SETTLE_CNT_LOWER_BYTE 2
+#define CSIPHY_SETTLE_CNT_HIGHER_BYTE 3
+#define CSIPHY_DNP_PARAMS 4
+#define CSIPHY_2PH_REGS 5
+#define CSIPHY_3PH_REGS 6
+
+struct csiphy_reg_t {
+ s32 reg_addr;
+ s32 reg_data;
+ s32 delay;
+ u32 csiphy_param_type;
+};
+
+/* 2.1.2 2PH */
+static const struct
+csiphy_reg_t lane_regs_sm8550[5][20] = {
+ {
+ {0x0E90, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E98, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E94, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+ {0x00A0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0090, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0098, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0094, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+ {0x0494, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x04A0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0490, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0498, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0494, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+ {0x0894, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x08A0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0890, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0898, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0894, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+ {0x0C94, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0CA0, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C90, 0x0f, 0x00, CSIPHY_DEFAULT_PARAMS},
+ },
+ {
+ {0x0C98, 0x08, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C94, 0x07, 0x01, CSIPHY_DEFAULT_PARAMS},
+ {0x0E30, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E28, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E00, 0x80, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E0C, 0xFF, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E38, 0x1F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E2C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E34, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E1C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E14, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E3C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E04, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E20, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0E08, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+ {0x0E10, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0030, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0000, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0038, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x002C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+ },
+ {
+ {0x0034, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x001C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0014, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x003C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0004, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0020, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0008, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+ {0x0010, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0430, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0400, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0438, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x042C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0434, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x041C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0414, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x043C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0404, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0420, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0408, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+ {0x0410, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+ },
+ {
+ {0x0830, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0800, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0838, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x082C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0834, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x081C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0814, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x083C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0804, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0820, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0808, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+ {0x0810, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C30, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C00, 0x8E, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C38, 0xFE, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C2C, 0x01, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C34, 0x0F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C1C, 0x0A, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C14, 0x60, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C3C, 0xB8, 0x00, CSIPHY_DEFAULT_PARAMS},
+ },
+ {
+ {0x0C04, 0x0C, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C20, 0x00, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C08, 0x10, 0x00, CSIPHY_SETTLE_CNT_LOWER_BYTE},
+ {0x0C10, 0x52, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0094, 0xD7, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x005C, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0060, 0xBD, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0064, 0x7F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0494, 0xD7, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x045C, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0460, 0xBD, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0464, 0x7F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0894, 0xD7, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x085C, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0860, 0xBD, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0864, 0x7F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C94, 0xD7, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C5C, 0x04, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C60, 0xBD, 0x00, CSIPHY_DEFAULT_PARAMS},
+ {0x0C64, 0x7F, 0x00, CSIPHY_DEFAULT_PARAMS},
+ }
+};
+
+static void csiphy_hw_version_read(struct csiphy_device *csiphy,
+ struct device *dev)
+{
+ u32 hw_version;
+
+ writel(CSIPHY_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID,
+ csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(6));
+
+ hw_version = readl_relaxed(csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_STATUSn(12));
+ hw_version |= readl_relaxed(csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_STATUSn(13)) << 8;
+ hw_version |= readl_relaxed(csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_STATUSn(14)) << 16;
+ hw_version |= readl_relaxed(csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_STATUSn(15)) << 24;
+
+ dev_info(dev, "CSIPHY 3PH HW Version = 0x%08x\n", hw_version);
+}
+
+/*
+ * csiphy_reset - Perform software reset on CSIPHY module
+ * @csiphy: CSIPHY device
+ */
+static void csiphy_reset(struct csiphy_device *csiphy)
+{
+ writel_relaxed(0x1, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(0));
+ usleep_range(5000, 8000);
+ writel_relaxed(0x0, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(0));
+}
+
+static irqreturn_t csiphy_isr(int irq, void *dev)
+{
+ struct csiphy_device *csiphy = dev;
+ int i;
+
+ for (i = 0; i < 11; i++) {
+ int c = i + 22;
+ u8 val = readl_relaxed(csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_STATUSn(i));
+
+ writel_relaxed(val, csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_CTRLn(c));
+ }
+
+ writel_relaxed(0x1, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(10));
+ writel_relaxed(0x0, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(10));
+
+ for (i = 22; i < 33; i++)
+ writel_relaxed(0x0, csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_CTRLn(i));
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * csiphy_settle_cnt_calc - Calculate settle count value
+ *
+ * Helper function to calculate settle count value. This is
+ * based on the CSI2 T_hs_settle parameter which in turn
+ * is calculated based on the CSI2 transmitter link frequency.
+ *
+ * Return settle count value or 0 if the CSI2 link frequency
+ * is not available
+ */
+static u8 csiphy_settle_cnt_calc(s64 link_freq, u32 timer_clk_rate)
+{
+ u32 ui; /* ps */
+ u32 timer_period; /* ps */
+ u32 t_hs_prepare_max; /* ps */
+ u32 t_hs_settle; /* ps */
+ u8 settle_cnt;
+
+ if (link_freq <= 0)
+ return 0;
+
+ ui = div_u64(1000000000000LL, link_freq);
+ ui /= 2;
+ t_hs_prepare_max = 85000 + 6 * ui;
+ t_hs_settle = t_hs_prepare_max;
+
+ timer_period = div_u64(1000000000000LL, timer_clk_rate);
+ settle_cnt = t_hs_settle / timer_period - 6;
+
+ return settle_cnt;
+}
+
+static void csiphy_config_lanes(struct csiphy_device *csiphy,
+ u8 settle_cnt)
+{
+ const struct csiphy_reg_t *r;
+ int i, l, array_size;
+ u32 val;
+
+ switch (csiphy->camss->res->version) {
+ case CAMSS_8550:
+ r = &lane_regs_sm8550[0][0];
+ array_size = ARRAY_SIZE(lane_regs_sm8550[0]);
+ break;
+ default:
+ WARN(1, "unknown csi version\n");
+ return;
+ }
+
+ for (l = 0; l < 5; l++) {
+ for (i = 0; i < array_size; i++, r++) {
+ switch (r->csiphy_param_type) {
+ case CSIPHY_SETTLE_CNT_LOWER_BYTE:
+ val = settle_cnt & 0xff;
+ break;
+ case CSIPHY_DNP_PARAMS:
+ continue;
+ default:
+ val = r->reg_data;
+ break;
+ }
+ writel_relaxed(val, csiphy->base + r->reg_addr);
+
+ if (r->delay > 0)
+ udelay(r->delay);
+ }
+ }
+}
+
+static u8 csiphy_get_lane_mask(struct csiphy_lanes_cfg *lane_cfg)
+{
+ u8 lane_mask;
+ int i;
+
+ for (i = 0; i < lane_cfg->num_data; i++)
+ lane_mask |= 1 << lane_cfg->data[i].pos;
+
+ return lane_mask;
+}
+
+static void csiphy_lanes_enable(struct csiphy_device *csiphy,
+ struct csiphy_config *cfg,
+ s64 link_freq, u8 lane_mask)
+{
+ struct csiphy_lanes_cfg *c = &cfg->csi2->lane_cfg;
+ u8 settle_cnt;
+ u8 val = 0;
+ int i;
+
+ settle_cnt = csiphy_settle_cnt_calc(link_freq, csiphy->timer_clk_rate);
+
+ val = CSIPHY_CMN_CSI_COMMON_CTRL5_CLK_ENABLE;
+ for (i = 0; i < c->num_data; i++)
+ val |= BIT(c->data[i].pos * 2);
+
+ writel_relaxed(val, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(5));
+
+ val = CSIPHY_CMN_CSI_COMMON_CTRL6_COMMON_PWRDN_B;
+ writel_relaxed(val, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(6));
+
+ val = 0x2;
+ writel_relaxed(val, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(7));
+
+ val = 0x0;
+ writel_relaxed(val, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(0));
+
+ csiphy_config_lanes(csiphy, settle_cnt);
+
+ /* IRQ_MASK registers - disable all interrupts */
+ for (i = 11; i < 22; i++)
+ writel_relaxed(0, csiphy->base + CSIPHY_CMN_CSI_COMMON_CTRLn(i));
+}
+
+static void csiphy_lanes_disable(struct csiphy_device *csiphy,
+ struct csiphy_config *cfg)
+{
+ writel_relaxed(0, csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_CTRLn(5));
+
+ writel_relaxed(0, csiphy->base +
+ CSIPHY_CMN_CSI_COMMON_CTRLn(6));
+}
+
+const struct csiphy_hw_ops csiphy_ops_2_1_2 = {
+ .get_lane_mask = csiphy_get_lane_mask,
+ .hw_version_read = csiphy_hw_version_read,
+ .reset = csiphy_reset,
+ .lanes_enable = csiphy_lanes_enable,
+ .lanes_disable = csiphy_lanes_disable,
+ .isr = csiphy_isr,
+ .event = NULL,
+};
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h
index ffe1b95eea98..286fdb9f4fdf 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.h
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.h
@@ -98,5 +98,6 @@ void msm_csiphy_unregister_entity(struct csiphy_device *csiphy);
extern const struct csiphy_hw_ops csiphy_ops_2ph_1_0;
extern const struct csiphy_hw_ops csiphy_ops_3ph_1_0;
+extern const struct csiphy_hw_ops csiphy_ops_2_1_2;
#endif /* QC_MSM_CAMSS_CSIPHY_H */
--
2.17.1