[PATCH v2 3/7] soc: qcom: Add GENI based QUP Wrapper driver

[Karthikeyan Ramasubramanian <kramasub-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>]

This driver manages the Generic Interface (GENI) firmware based Qualcomm
Universal Peripheral (QUP) Wrapper. GENI based QUP is the next generation
programmable module composed of multiple Serial Engines (SE) and supports
a wide range of serial interfaces like UART, SPI, I2C, I3C, etc. This
driver also enables managing the serial interface independent aspects of
Serial Engines.

Signed-off-by: Karthikeyan Ramasubramanian <kramasub-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Signed-off-by: Sagar Dharia <sdharia-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Signed-off-by: Girish Mahadevan <girishm-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
---
 drivers/soc/qcom/Kconfig        |    8 +
 drivers/soc/qcom/Makefile       |    1 +
 drivers/soc/qcom/qcom-geni-se.c | 1016 +++++++++++++++++++++++++++++++++++++++
 include/linux/qcom-geni-se.h    |  807 +++++++++++++++++++++++++++++++
 4 files changed, 1832 insertions(+)
 create mode 100644 drivers/soc/qcom/qcom-geni-se.c
 create mode 100644 include/linux/qcom-geni-se.h

diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index b81374b..b306d51 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -3,6 +3,14 @@
 #
 menu "Qualcomm SoC drivers"
 
+config QCOM_GENI_SE
+	tristate "QCOM GENI Serial Engine Driver"
+	help
+	  This module is used to manage Generic Interface (GENI) firmware based
+	  Qualcomm Technologies, Inc. Universal Peripheral (QUP) Wrapper. This
+	  module is also used to manage the common aspects of multiple Serial
+	  Engines present in the QUP.
+
 config QCOM_GLINK_SSR
 	tristate "Qualcomm Glink SSR driver"
 	depends on RPMSG
diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile
index 40c56f6..74d5db8 100644
--- a/drivers/soc/qcom/Makefile
+++ b/drivers/soc/qcom/Makefile
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_QCOM_GENI_SE) +=	qcom-geni-se.o
 obj-$(CONFIG_QCOM_GLINK_SSR) +=	glink_ssr.o
 obj-$(CONFIG_QCOM_GSBI)	+=	qcom_gsbi.o
 obj-$(CONFIG_QCOM_MDT_LOADER)	+= mdt_loader.o
diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
new file mode 100644
index 0000000..3f43582
--- /dev/null
+++ b/drivers/soc/qcom/qcom-geni-se.c
@@ -0,0 +1,1016 @@
+/*
+ * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/pm_runtime.h>
+#include <linux/qcom-geni-se.h>
+#include <linux/spinlock.h>
+
+#define MAX_CLK_PERF_LEVEL 32
+
+/**
+ * @struct geni_se_device - Data structure to represent the QUP Wrapper Core
+ * @dev:		Device pointer of the QUP wrapper core.
+ * @base:		Base address of this instance of QUP wrapper core.
+ * @m_ahb_clk:		Handle to the primary AHB clock.
+ * @s_ahb_clk:		Handle to the secondary AHB clock.
+ * @geni_dev_lock:	Lock to protect the device elements.
+ * @num_clk_levels:	Number of valid clock levels in clk_perf_tbl.
+ * @clk_perf_tbl:	Table of clock frequency input to Serial Engine clock.
+ */
+struct geni_se_device {
+	struct device *dev;
+	void __iomem *base;
+	struct clk *m_ahb_clk;
+	struct clk *s_ahb_clk;
+	struct mutex geni_dev_lock;
+	unsigned int num_clk_levels;
+	unsigned long *clk_perf_tbl;
+};
+
+/* Offset of QUP Hardware Version Register */
+#define QUP_HW_VER (0x4)
+
+#define HW_VER_MAJOR_MASK GENMASK(31, 28)
+#define HW_VER_MAJOR_SHFT 28
+#define HW_VER_MINOR_MASK GENMASK(27, 16)
+#define HW_VER_MINOR_SHFT 16
+#define HW_VER_STEP_MASK GENMASK(15, 0)
+
+/**
+ * geni_read_reg_nolog() - Helper function to read from a GENI register
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ *
+ * Return:	Return the contents of the register.
+ */
+unsigned int geni_read_reg_nolog(void __iomem *base, int offset)
+{
+	return readl_relaxed(base + offset);
+}
+EXPORT_SYMBOL(geni_read_reg_nolog);
+
+/**
+ * geni_write_reg_nolog() - Helper function to write into a GENI register
+ * @value:	Value to be written into the register.
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ */
+void geni_write_reg_nolog(unsigned int value, void __iomem *base, int offset)
+{
+	return writel_relaxed(value, (base + offset));
+}
+EXPORT_SYMBOL(geni_write_reg_nolog);
+
+/**
+ * geni_read_reg() - Helper function to read from a GENI register
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ *
+ * Return:	Return the contents of the register.
+ */
+unsigned int geni_read_reg(void __iomem *base, int offset)
+{
+	return readl_relaxed(base + offset);
+}
+EXPORT_SYMBOL(geni_read_reg);
+
+/**
+ * geni_write_reg() - Helper function to write into a GENI register
+ * @value:	Value to be written into the register.
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ */
+void geni_write_reg(unsigned int value, void __iomem *base, int offset)
+{
+	return writel_relaxed(value, (base + offset));
+}
+EXPORT_SYMBOL(geni_write_reg);
+
+/**
+ * geni_get_qup_hw_version() - Read the QUP wrapper Hardware version
+ * @wrapper_dev:	Pointer to the corresponding QUP wrapper core.
+ * @major:		Buffer for Major Version field.
+ * @minor:		Buffer for Minor Version field.
+ * @step:		Buffer for Step Version field.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_get_qup_hw_version(struct device *wrapper_dev, unsigned int *major,
+			    unsigned int *minor, unsigned int *step)
+{
+	unsigned int version;
+	struct geni_se_device *geni_se_dev;
+
+	if (!wrapper_dev || !major || !minor || !step)
+		return -EINVAL;
+
+	geni_se_dev = dev_get_drvdata(wrapper_dev);
+	if (unlikely(!geni_se_dev))
+		return -ENODEV;
+
+	version = geni_read_reg(geni_se_dev->base, QUP_HW_VER);
+	*major = (version & HW_VER_MAJOR_MASK) >> HW_VER_MAJOR_SHFT;
+	*minor = (version & HW_VER_MINOR_MASK) >> HW_VER_MINOR_SHFT;
+	*step = version & HW_VER_STEP_MASK;
+	return 0;
+}
+EXPORT_SYMBOL(geni_get_qup_hw_version);
+
+/**
+ * geni_se_get_proto() - Read the protocol configured for a serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * Return:	Protocol value as configured in the serial engine.
+ */
+int geni_se_get_proto(void __iomem *base)
+{
+	int proto;
+
+	proto = ((geni_read_reg(base, GENI_FW_REVISION_RO)
+			& FW_REV_PROTOCOL_MSK) >> FW_REV_PROTOCOL_SHFT);
+	return proto;
+}
+EXPORT_SYMBOL(geni_se_get_proto);
+
+static int geni_se_irq_en(void __iomem *base)
+{
+	unsigned int common_geni_m_irq_en;
+	unsigned int common_geni_s_irq_en;
+
+	common_geni_m_irq_en = geni_read_reg(base, SE_GENI_M_IRQ_EN);
+	common_geni_s_irq_en = geni_read_reg(base, SE_GENI_S_IRQ_EN);
+	/* Common to all modes */
+	common_geni_m_irq_en |= M_COMMON_GENI_M_IRQ_EN;
+	common_geni_s_irq_en |= S_COMMON_GENI_S_IRQ_EN;
+
+	geni_write_reg(common_geni_m_irq_en, base, SE_GENI_M_IRQ_EN);
+	geni_write_reg(common_geni_s_irq_en, base, SE_GENI_S_IRQ_EN);
+	return 0;
+}
+
+
+static void geni_se_set_rx_rfr_wm(void __iomem *base, unsigned int rx_wm,
+				  unsigned int rx_rfr)
+{
+	geni_write_reg(rx_wm, base, SE_GENI_RX_WATERMARK_REG);
+	geni_write_reg(rx_rfr, base, SE_GENI_RX_RFR_WATERMARK_REG);
+}
+
+static int geni_se_io_set_mode(void __iomem *base)
+{
+	unsigned int io_mode;
+	unsigned int geni_dma_mode;
+
+	io_mode = geni_read_reg(base, SE_IRQ_EN);
+	geni_dma_mode = geni_read_reg(base, SE_GENI_DMA_MODE_EN);
+
+	io_mode |= (GENI_M_IRQ_EN | GENI_S_IRQ_EN);
+	io_mode |= (DMA_TX_IRQ_EN | DMA_RX_IRQ_EN);
+	geni_dma_mode &= ~GENI_DMA_MODE_EN;
+
+	geni_write_reg(io_mode, base, SE_IRQ_EN);
+	geni_write_reg(geni_dma_mode, base, SE_GENI_DMA_MODE_EN);
+	geni_write_reg(0, base, SE_GSI_EVENT_EN);
+	return 0;
+}
+
+static void geni_se_io_init(void __iomem *base)
+{
+	unsigned int io_op_ctrl;
+	unsigned int geni_cgc_ctrl;
+	unsigned int dma_general_cfg;
+
+	geni_cgc_ctrl = geni_read_reg(base, GENI_CGC_CTRL);
+	dma_general_cfg = geni_read_reg(base, SE_DMA_GENERAL_CFG);
+	geni_cgc_ctrl |= DEFAULT_CGC_EN;
+	dma_general_cfg |= (AHB_SEC_SLV_CLK_CGC_ON | DMA_AHB_SLV_CFG_ON |
+			DMA_TX_CLK_CGC_ON | DMA_RX_CLK_CGC_ON);
+	io_op_ctrl = DEFAULT_IO_OUTPUT_CTRL_MSK;
+	geni_write_reg(geni_cgc_ctrl, base, GENI_CGC_CTRL);
+	geni_write_reg(dma_general_cfg, base, SE_DMA_GENERAL_CFG);
+
+	geni_write_reg(io_op_ctrl, base, GENI_OUTPUT_CTRL);
+	geni_write_reg(FORCE_DEFAULT, base, GENI_FORCE_DEFAULT_REG);
+}
+
+/**
+ * geni_se_init() - Initialize the GENI Serial Engine
+ * @base:	Base address of the serial engine's register block.
+ * @rx_wm:	Receive watermark to be configured.
+ * @rx_rfr_wm:	Ready-for-receive watermark to be configured.
+ *
+ * This function is used to initialize the GENI serial engine, configure
+ * receive watermark and ready-for-receive watermarks.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_init(void __iomem *base, unsigned int rx_wm, unsigned int rx_rfr)
+{
+	int ret;
+
+	geni_se_io_init(base);
+	ret = geni_se_io_set_mode(base);
+	if (ret)
+		return ret;
+
+	geni_se_set_rx_rfr_wm(base, rx_wm, rx_rfr);
+	ret = geni_se_irq_en(base);
+	return ret;
+}
+EXPORT_SYMBOL(geni_se_init);
+
+static int geni_se_select_fifo_mode(void __iomem *base)
+{
+	int proto = geni_se_get_proto(base);
+	unsigned int common_geni_m_irq_en;
+	unsigned int common_geni_s_irq_en;
+	unsigned int geni_dma_mode;
+
+	geni_write_reg(0, base, SE_GSI_EVENT_EN);
+	geni_write_reg(0xFFFFFFFF, base, SE_GENI_M_IRQ_CLEAR);
+	geni_write_reg(0xFFFFFFFF, base, SE_GENI_S_IRQ_CLEAR);
+	geni_write_reg(0xFFFFFFFF, base, SE_DMA_TX_IRQ_CLR);
+	geni_write_reg(0xFFFFFFFF, base, SE_DMA_RX_IRQ_CLR);
+	geni_write_reg(0xFFFFFFFF, base, SE_IRQ_EN);
+
+	common_geni_m_irq_en = geni_read_reg(base, SE_GENI_M_IRQ_EN);
+	common_geni_s_irq_en = geni_read_reg(base, SE_GENI_S_IRQ_EN);
+	geni_dma_mode = geni_read_reg(base, SE_GENI_DMA_MODE_EN);
+	if (proto != UART) {
+		common_geni_m_irq_en |=
+			(M_CMD_DONE_EN | M_TX_FIFO_WATERMARK_EN |
+			M_RX_FIFO_WATERMARK_EN | M_RX_FIFO_LAST_EN);
+		common_geni_s_irq_en |= S_CMD_DONE_EN;
+	}
+	geni_dma_mode &= ~GENI_DMA_MODE_EN;
+
+	geni_write_reg(common_geni_m_irq_en, base, SE_GENI_M_IRQ_EN);
+	geni_write_reg(common_geni_s_irq_en, base, SE_GENI_S_IRQ_EN);
+	geni_write_reg(geni_dma_mode, base, SE_GENI_DMA_MODE_EN);
+	return 0;
+}
+
+static int geni_se_select_dma_mode(void __iomem *base)
+{
+	unsigned int geni_dma_mode = 0;
+
+	geni_write_reg(0, base, SE_GSI_EVENT_EN);
+	geni_write_reg(0xFFFFFFFF, base, SE_GENI_M_IRQ_CLEAR);
+	geni_write_reg(0xFFFFFFFF, base, SE_GENI_S_IRQ_CLEAR);
+	geni_write_reg(0xFFFFFFFF, base, SE_DMA_TX_IRQ_CLR);
+	geni_write_reg(0xFFFFFFFF, base, SE_DMA_RX_IRQ_CLR);
+	geni_write_reg(0xFFFFFFFF, base, SE_IRQ_EN);
+
+	geni_dma_mode = geni_read_reg(base, SE_GENI_DMA_MODE_EN);
+	geni_dma_mode |= GENI_DMA_MODE_EN;
+	geni_write_reg(geni_dma_mode, base, SE_GENI_DMA_MODE_EN);
+	return 0;
+}
+
+/**
+ * geni_se_select_mode() - Select the serial engine transfer mode
+ * @base:	Base address of the serial engine's register block.
+ * @mode:	Transfer mode to be selected.
+ *
+ * Return:	0 on success, standard Linux error codes on failure.
+ */
+int geni_se_select_mode(void __iomem *base, int mode)
+{
+	int ret = 0;
+
+	switch (mode) {
+	case FIFO_MODE:
+		geni_se_select_fifo_mode(base);
+		break;
+	case SE_DMA:
+		geni_se_select_dma_mode(base);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(geni_se_select_mode);
+
+/**
+ * geni_se_setup_m_cmd() - Setup the primary sequencer
+ * @base:	Base address of the serial engine's register block.
+ * @cmd:	Command/Operation to setup in the primary sequencer.
+ * @params:	Parameter for the sequencer command.
+ *
+ * This function is used to configure the primary sequencer with the
+ * command and its assoicated parameters.
+ */
+void geni_se_setup_m_cmd(void __iomem *base, u32 cmd, u32 params)
+{
+	u32 m_cmd = (cmd << M_OPCODE_SHFT);
+
+	m_cmd |= (params & M_PARAMS_MSK);
+	geni_write_reg(m_cmd, base, SE_GENI_M_CMD0);
+}
+EXPORT_SYMBOL(geni_se_setup_m_cmd);
+
+/**
+ * geni_se_setup_s_cmd() - Setup the secondary sequencer
+ * @base:	Base address of the serial engine's register block.
+ * @cmd:	Command/Operation to setup in the secondary sequencer.
+ * @params:	Parameter for the sequencer command.
+ *
+ * This function is used to configure the secondary sequencer with the
+ * command and its assoicated parameters.
+ */
+void geni_se_setup_s_cmd(void __iomem *base, u32 cmd, u32 params)
+{
+	u32 s_cmd = geni_read_reg(base, SE_GENI_S_CMD0);
+
+	s_cmd &= ~(S_OPCODE_MSK | S_PARAMS_MSK);
+	s_cmd |= (cmd << S_OPCODE_SHFT);
+	s_cmd |= (params & S_PARAMS_MSK);
+	geni_write_reg(s_cmd, base, SE_GENI_S_CMD0);
+}
+EXPORT_SYMBOL(geni_se_setup_s_cmd);
+
+/**
+ * geni_se_cancel_m_cmd() - Cancel the command configured in the primary
+ *                          sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to cancel the currently configured command in the
+ * primary sequencer.
+ */
+void geni_se_cancel_m_cmd(void __iomem *base)
+{
+	geni_write_reg(M_GENI_CMD_CANCEL, base, SE_GENI_M_CMD_CTRL_REG);
+}
+EXPORT_SYMBOL(geni_se_cancel_m_cmd);
+
+/**
+ * geni_se_cancel_s_cmd() - Cancel the command configured in the secondary
+ *                          sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to cancel the currently configured command in the
+ * secondary sequencer.
+ */
+void geni_se_cancel_s_cmd(void __iomem *base)
+{
+	geni_write_reg(S_GENI_CMD_CANCEL, base, SE_GENI_S_CMD_CTRL_REG);
+}
+EXPORT_SYMBOL(geni_se_cancel_s_cmd);
+
+/**
+ * geni_se_abort_m_cmd() - Abort the command configured in the primary sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to force abort the currently configured command in the
+ * primary sequencer.
+ */
+void geni_se_abort_m_cmd(void __iomem *base)
+{
+	geni_write_reg(M_GENI_CMD_ABORT, base, SE_GENI_M_CMD_CTRL_REG);
+}
+EXPORT_SYMBOL(geni_se_abort_m_cmd);
+
+/**
+ * geni_se_abort_s_cmd() - Abort the command configured in the secondary
+ *                         sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to force abort the currently configured command in the
+ * secondary sequencer.
+ */
+void geni_se_abort_s_cmd(void __iomem *base)
+{
+	geni_write_reg(S_GENI_CMD_ABORT, base, SE_GENI_S_CMD_CTRL_REG);
+}
+EXPORT_SYMBOL(geni_se_abort_s_cmd);
+
+/**
+ * geni_se_get_tx_fifo_depth() - Get the TX fifo depth of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to get the depth i.e. number of elements in the
+ * TX fifo of the serial engine.
+ *
+ * Return:	TX fifo depth in units of FIFO words.
+ */
+int geni_se_get_tx_fifo_depth(void __iomem *base)
+{
+	int tx_fifo_depth;
+
+	tx_fifo_depth = ((geni_read_reg(base, SE_HW_PARAM_0)
+			& TX_FIFO_DEPTH_MSK) >> TX_FIFO_DEPTH_SHFT);
+	return tx_fifo_depth;
+}
+EXPORT_SYMBOL(geni_se_get_tx_fifo_depth);
+
+/**
+ * geni_se_get_tx_fifo_width() - Get the TX fifo width of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to get the width i.e. word size per element in the
+ * TX fifo of the serial engine.
+ *
+ * Return:	TX fifo width in bits
+ */
+int geni_se_get_tx_fifo_width(void __iomem *base)
+{
+	int tx_fifo_width;
+
+	tx_fifo_width = ((geni_read_reg(base, SE_HW_PARAM_0)
+			& TX_FIFO_WIDTH_MSK) >> TX_FIFO_WIDTH_SHFT);
+	return tx_fifo_width;
+}
+EXPORT_SYMBOL(geni_se_get_tx_fifo_width);
+
+/**
+ * geni_se_get_rx_fifo_depth() - Get the RX fifo depth of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to get the depth i.e. number of elements in the
+ * RX fifo of the serial engine.
+ *
+ * Return:	RX fifo depth in units of FIFO words
+ */
+int geni_se_get_rx_fifo_depth(void __iomem *base)
+{
+	int rx_fifo_depth;
+
+	rx_fifo_depth = ((geni_read_reg(base, SE_HW_PARAM_1)
+			& RX_FIFO_DEPTH_MSK) >> RX_FIFO_DEPTH_SHFT);
+	return rx_fifo_depth;
+}
+EXPORT_SYMBOL(geni_se_get_rx_fifo_depth);
+
+/**
+ * geni_se_get_packing_config() - Get the packing configuration based on input
+ * @bpw:	Bits of data per transfer word.
+ * @pack_words:	Number of words per fifo element.
+ * @msb_to_lsb:	Transfer from MSB to LSB or vice-versa.
+ * @cfg0:	Output buffer to hold the first half of configuration.
+ * @cfg1:	Output buffer to hold the second half of configuration.
+ *
+ * This function is used to calculate the packing configuration based on
+ * the input packing requirement and the configuration logic.
+ */
+void geni_se_get_packing_config(int bpw, int pack_words, bool msb_to_lsb,
+				unsigned long *cfg0, unsigned long *cfg1)
+{
+	u32 cfg[4] = {0};
+	int len;
+	int temp_bpw = bpw;
+	int idx_start = (msb_to_lsb ? (bpw - 1) : 0);
+	int idx = idx_start;
+	int idx_delta = (msb_to_lsb ? -BITS_PER_BYTE : BITS_PER_BYTE);
+	int ceil_bpw = ((bpw & (BITS_PER_BYTE - 1)) ?
+			((bpw & ~(BITS_PER_BYTE - 1)) + BITS_PER_BYTE) : bpw);
+	int iter = (ceil_bpw * pack_words) >> 3;
+	int i;
+
+	if (unlikely(iter <= 0 || iter > 4)) {
+		*cfg0 = 0;
+		*cfg1 = 0;
+		return;
+	}
+
+	for (i = 0; i < iter; i++) {
+		len = (temp_bpw < BITS_PER_BYTE) ?
+				(temp_bpw - 1) : BITS_PER_BYTE - 1;
+		cfg[i] = ((idx << 5) | (msb_to_lsb << 4) | (len << 1));
+		idx = ((temp_bpw - BITS_PER_BYTE) <= 0) ?
+				((i + 1) * BITS_PER_BYTE) + idx_start :
+				idx + idx_delta;
+		temp_bpw = ((temp_bpw - BITS_PER_BYTE) <= 0) ?
+				bpw : (temp_bpw - BITS_PER_BYTE);
+	}
+	cfg[iter - 1] |= 1;
+	*cfg0 = cfg[0] | (cfg[1] << 10);
+	*cfg1 = cfg[2] | (cfg[3] << 10);
+}
+EXPORT_SYMBOL(geni_se_get_packing_config);
+
+/**
+ * geni_se_config_packing() - Packing configuration of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ * @bpw:	Bits of data per transfer word.
+ * @pack_words:	Number of words per fifo element.
+ * @msb_to_lsb:	Transfer from MSB to LSB or vice-versa.
+ *
+ * This function is used to configure the packing rules for the current
+ * transfer.
+ */
+void geni_se_config_packing(void __iomem *base, int bpw,
+			    int pack_words, bool msb_to_lsb)
+{
+	unsigned long cfg0, cfg1;
+
+	geni_se_get_packing_config(bpw, pack_words, msb_to_lsb, &cfg0, &cfg1);
+	geni_write_reg(cfg0, base, SE_GENI_TX_PACKING_CFG0);
+	geni_write_reg(cfg1, base, SE_GENI_TX_PACKING_CFG1);
+	geni_write_reg(cfg0, base, SE_GENI_RX_PACKING_CFG0);
+	geni_write_reg(cfg1, base, SE_GENI_RX_PACKING_CFG1);
+	if (pack_words || bpw == 32)
+		geni_write_reg((bpw >> 4), base, SE_GENI_BYTE_GRAN);
+}
+EXPORT_SYMBOL(geni_se_config_packing);
+
+static void geni_se_clks_off(struct geni_se_rsc *rsc)
+{
+	struct geni_se_device *geni_se_dev;
+
+	if (unlikely(!rsc || !rsc->wrapper_dev))
+		return;
+
+	geni_se_dev = dev_get_drvdata(rsc->wrapper_dev);
+	if (unlikely(!geni_se_dev))
+		return;
+
+	clk_disable_unprepare(rsc->se_clk);
+	clk_disable_unprepare(geni_se_dev->s_ahb_clk);
+	clk_disable_unprepare(geni_se_dev->m_ahb_clk);
+}
+
+/**
+ * geni_se_resources_off() - Turn off resources associated with the serial
+ *                           engine
+ * @rsc:	Handle to resources associated with the serial engine.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_resources_off(struct geni_se_rsc *rsc)
+{
+	int ret = 0;
+	struct geni_se_device *geni_se_dev;
+
+	if (unlikely(!rsc || !rsc->wrapper_dev))
+		return -EINVAL;
+
+	geni_se_dev = dev_get_drvdata(rsc->wrapper_dev);
+	if (unlikely(!geni_se_dev))
+		return -ENODEV;
+
+	ret = pinctrl_select_state(rsc->geni_pinctrl, rsc->geni_gpio_sleep);
+	if (ret)
+		return ret;
+
+	geni_se_clks_off(rsc);
+	return 0;
+}
+EXPORT_SYMBOL(geni_se_resources_off);
+
+static int geni_se_clks_on(struct geni_se_rsc *rsc)
+{
+	int ret;
+	struct geni_se_device *geni_se_dev;
+
+	if (unlikely(!rsc || !rsc->wrapper_dev))
+		return -EINVAL;
+
+	geni_se_dev = dev_get_drvdata(rsc->wrapper_dev);
+	if (unlikely(!geni_se_dev))
+		return -EPROBE_DEFER;
+
+	ret = clk_prepare_enable(geni_se_dev->m_ahb_clk);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(geni_se_dev->s_ahb_clk);
+	if (ret) {
+		clk_disable_unprepare(geni_se_dev->m_ahb_clk);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(rsc->se_clk);
+	if (ret) {
+		clk_disable_unprepare(geni_se_dev->s_ahb_clk);
+		clk_disable_unprepare(geni_se_dev->m_ahb_clk);
+	}
+	return ret;
+}
+
+/**
+ * geni_se_resources_on() - Turn on resources associated with the serial
+ *                          engine
+ * @rsc:	Handle to resources associated with the serial engine.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_resources_on(struct geni_se_rsc *rsc)
+{
+	int ret = 0;
+	struct geni_se_device *geni_se_dev;
+
+	if (unlikely(!rsc || !rsc->wrapper_dev))
+		return -EINVAL;
+
+	geni_se_dev = dev_get_drvdata(rsc->wrapper_dev);
+	if (unlikely(!geni_se_dev))
+		return -EPROBE_DEFER;
+
+	ret = geni_se_clks_on(rsc);
+	if (ret)
+		return ret;
+
+	ret = pinctrl_select_state(rsc->geni_pinctrl, rsc->geni_gpio_active);
+	if (ret)
+		geni_se_clks_off(rsc);
+
+	return ret;
+}
+EXPORT_SYMBOL(geni_se_resources_on);
+
+/**
+ * geni_se_clk_tbl_get() - Get the clock table to program DFS
+ * @rsc:	Resource for which the clock table is requested.
+ * @tbl:	Table in which the output is returned.
+ *
+ * This function is called by the protocol drivers to determine the different
+ * clock frequencies supported by Serail Engine Core Clock. The protocol
+ * drivers use the output to determine the clock frequency index to be
+ * programmed into DFS.
+ *
+ * Return:	number of valid performance levels in the table on success,
+ *		standard Linux error codes on failure.
+ */
+int geni_se_clk_tbl_get(struct geni_se_rsc *rsc, unsigned long **tbl)
+{
+	struct geni_se_device *geni_se_dev;
+	int i;
+	unsigned long prev_freq = 0;
+	int ret = 0;
+
+	if (unlikely(!rsc || !rsc->wrapper_dev || !rsc->se_clk || !tbl))
+		return -EINVAL;
+
+	*tbl = NULL;
+	geni_se_dev = dev_get_drvdata(rsc->wrapper_dev);
+	if (unlikely(!geni_se_dev))
+		return -EPROBE_DEFER;
+
+	mutex_lock(&geni_se_dev->geni_dev_lock);
+	if (geni_se_dev->clk_perf_tbl) {
+		*tbl = geni_se_dev->clk_perf_tbl;
+		ret = geni_se_dev->num_clk_levels;
+		goto exit_se_clk_tbl_get;
+	}
+
+	geni_se_dev->clk_perf_tbl = kzalloc(sizeof(*geni_se_dev->clk_perf_tbl) *
+						MAX_CLK_PERF_LEVEL, GFP_KERNEL);
+	if (!geni_se_dev->clk_perf_tbl) {
+		ret = -ENOMEM;
+		goto exit_se_clk_tbl_get;
+	}
+
+	for (i = 0; i < MAX_CLK_PERF_LEVEL; i++) {
+		geni_se_dev->clk_perf_tbl[i] = clk_round_rate(rsc->se_clk,
+								prev_freq + 1);
+		if (geni_se_dev->clk_perf_tbl[i] == prev_freq) {
+			geni_se_dev->clk_perf_tbl[i] = 0;
+			break;
+		}
+		prev_freq = geni_se_dev->clk_perf_tbl[i];
+	}
+	geni_se_dev->num_clk_levels = i;
+	*tbl = geni_se_dev->clk_perf_tbl;
+	ret = geni_se_dev->num_clk_levels;
+exit_se_clk_tbl_get:
+	mutex_unlock(&geni_se_dev->geni_dev_lock);
+	return ret;
+}
+EXPORT_SYMBOL(geni_se_clk_tbl_get);
+
+/**
+ * geni_se_clk_freq_match() - Get the matching or closest SE clock frequency
+ * @rsc:	Resource for which the clock frequency is requested.
+ * @req_freq:	Requested clock frequency.
+ * @index:	Index of the resultant frequency in the table.
+ * @res_freq:	Resultant frequency which matches or is closer to the
+ *		requested frequency.
+ * @exact:	Flag to indicate exact multiple requirement of the requested
+ *		frequency .
+ *
+ * This function is called by the protocol drivers to determine the matching
+ * or closest frequency of the Serial Engine clock to be selected in order
+ * to meet the performance requirements.
+ *
+ * Return:	0 on success, standard Linux error codes on failure.
+ */
+int geni_se_clk_freq_match(struct geni_se_rsc *rsc, unsigned long req_freq,
+			   unsigned int *index, unsigned long *res_freq,
+			   bool exact)
+{
+	unsigned long *tbl;
+	int num_clk_levels;
+	int i;
+
+	num_clk_levels = geni_se_clk_tbl_get(rsc, &tbl);
+	if (num_clk_levels < 0)
+		return num_clk_levels;
+
+	if (num_clk_levels == 0)
+		return -EFAULT;
+
+	*res_freq = 0;
+	for (i = 0; i < num_clk_levels; i++) {
+		if (!(tbl[i] % req_freq)) {
+			*index = i;
+			*res_freq = tbl[i];
+			return 0;
+		}
+
+		if (!(*res_freq) || ((tbl[i] > *res_freq) &&
+				     (tbl[i] < req_freq))) {
+			*index = i;
+			*res_freq = tbl[i];
+		}
+	}
+
+	if (exact || !(*res_freq))
+		return -ENOKEY;
+
+	return 0;
+}
+EXPORT_SYMBOL(geni_se_clk_freq_match);
+
+/**
+ * geni_se_tx_dma_prep() - Prepare the Serial Engine for TX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the TX buffer is mapped.
+ * @base:		Base address of the SE register block.
+ * @tx_buf:		Pointer to the TX buffer.
+ * @tx_len:		Length of the TX buffer.
+ * @tx_dma:		Pointer to store the mapped DMA address.
+ *
+ * This function is used to prepare the buffers for DMA TX.
+ *
+ * Return:	0 on success, standard Linux error codes on error/failure.
+ */
+int geni_se_tx_dma_prep(struct device *wrapper_dev, void __iomem *base,
+			void *tx_buf, int tx_len, dma_addr_t *tx_dma)
+{
+	int ret;
+
+	if (unlikely(!wrapper_dev || !base || !tx_buf || !tx_len || !tx_dma))
+		return -EINVAL;
+
+	ret = geni_se_map_buf(wrapper_dev, tx_dma, tx_buf, tx_len,
+				    DMA_TO_DEVICE);
+	if (ret)
+		return ret;
+
+	geni_write_reg(7, base, SE_DMA_TX_IRQ_EN_SET);
+	geni_write_reg((u32)(*tx_dma), base, SE_DMA_TX_PTR_L);
+	geni_write_reg((u32)((*tx_dma) >> 32), base, SE_DMA_TX_PTR_H);
+	geni_write_reg(1, base, SE_DMA_TX_ATTR);
+	geni_write_reg(tx_len, base, SE_DMA_TX_LEN);
+	return 0;
+}
+EXPORT_SYMBOL(geni_se_tx_dma_prep);
+
+/**
+ * geni_se_rx_dma_prep() - Prepare the Serial Engine for RX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the RX buffer is mapped.
+ * @base:		Base address of the SE register block.
+ * @rx_buf:		Pointer to the RX buffer.
+ * @rx_len:		Length of the RX buffer.
+ * @rx_dma:		Pointer to store the mapped DMA address.
+ *
+ * This function is used to prepare the buffers for DMA RX.
+ *
+ * Return:	0 on success, standard Linux error codes on error/failure.
+ */
+int geni_se_rx_dma_prep(struct device *wrapper_dev, void __iomem *base,
+			void *rx_buf, int rx_len, dma_addr_t *rx_dma)
+{
+	int ret;
+
+	if (unlikely(!wrapper_dev || !base || !rx_buf || !rx_len || !rx_dma))
+		return -EINVAL;
+
+	ret = geni_se_map_buf(wrapper_dev, rx_dma, rx_buf, rx_len,
+				    DMA_FROM_DEVICE);
+	if (ret)
+		return ret;
+
+	geni_write_reg(7, base, SE_DMA_RX_IRQ_EN_SET);
+	geni_write_reg((u32)(*rx_dma), base, SE_DMA_RX_PTR_L);
+	geni_write_reg((u32)((*rx_dma) >> 32), base, SE_DMA_RX_PTR_H);
+	/* RX does not have EOT bit */
+	geni_write_reg(0, base, SE_DMA_RX_ATTR);
+	geni_write_reg(rx_len, base, SE_DMA_RX_LEN);
+	return 0;
+}
+EXPORT_SYMBOL(geni_se_rx_dma_prep);
+
+/**
+ * geni_se_tx_dma_unprep() - Unprepare the Serial Engine after TX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the RX buffer is mapped.
+ * @tx_dma:		DMA address of the TX buffer.
+ * @tx_len:		Length of the TX buffer.
+ *
+ * This function is used to unprepare the DMA buffers after DMA TX.
+ */
+void geni_se_tx_dma_unprep(struct device *wrapper_dev,
+			   dma_addr_t tx_dma, int tx_len)
+{
+	if (tx_dma)
+		geni_se_unmap_buf(wrapper_dev, &tx_dma, tx_len,
+						DMA_TO_DEVICE);
+}
+EXPORT_SYMBOL(geni_se_tx_dma_unprep);
+
+/**
+ * geni_se_rx_dma_unprep() - Unprepare the Serial Engine after RX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the RX buffer is mapped.
+ * @rx_dma:		DMA address of the RX buffer.
+ * @rx_len:		Length of the RX buffer.
+ *
+ * This function is used to unprepare the DMA buffers after DMA RX.
+ */
+void geni_se_rx_dma_unprep(struct device *wrapper_dev,
+			   dma_addr_t rx_dma, int rx_len)
+{
+	if (rx_dma)
+		geni_se_unmap_buf(wrapper_dev, &rx_dma, rx_len,
+						DMA_FROM_DEVICE);
+}
+EXPORT_SYMBOL(geni_se_rx_dma_unprep);
+
+/**
+ * geni_se_map_buf() - Map a single buffer into QUP wrapper device
+ * @wrapper_dev:	Pointer to the corresponding QUP wrapper core.
+ * @iova:		Pointer in which the mapped virtual address is stored.
+ * @buf:		Address of the buffer that needs to be mapped.
+ * @size:		Size of the buffer.
+ * @dir:		Direction of the DMA transfer.
+ *
+ * This function is used to map an already allocated buffer into the
+ * QUP device space.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_map_buf(struct device *wrapper_dev, dma_addr_t *iova,
+		    void *buf, size_t size, enum dma_data_direction dir)
+{
+	struct device *dev_p;
+	struct geni_se_device *geni_se_dev;
+
+	if (!wrapper_dev || !iova || !buf || !size)
+		return -EINVAL;
+
+	geni_se_dev = dev_get_drvdata(wrapper_dev);
+	if (!geni_se_dev || !geni_se_dev->dev)
+		return -ENODEV;
+
+	dev_p = geni_se_dev->dev;
+
+	*iova = dma_map_single(dev_p, buf, size, dir);
+	if (dma_mapping_error(dev_p, *iova))
+		return -EIO;
+	return 0;
+}
+EXPORT_SYMBOL(geni_se_map_buf);
+
+/**
+ * geni_se_unmap_buf() - Unmap a single buffer from QUP wrapper device
+ * @wrapper_dev:	Pointer to the corresponding QUP wrapper core.
+ * @iova:		Pointer in which the mapped virtual address is stored.
+ * @size:		Size of the buffer.
+ * @dir:		Direction of the DMA transfer.
+ *
+ * This function is used to unmap an already mapped buffer from the
+ * QUP device space.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_unmap_buf(struct device *wrapper_dev, dma_addr_t *iova,
+		      size_t size, enum dma_data_direction dir)
+{
+	struct device *dev_p;
+	struct geni_se_device *geni_se_dev;
+
+	if (!wrapper_dev || !iova || !size)
+		return -EINVAL;
+
+	geni_se_dev = dev_get_drvdata(wrapper_dev);
+	if (!geni_se_dev || !geni_se_dev->dev)
+		return -ENODEV;
+
+	dev_p = geni_se_dev->dev;
+	dma_unmap_single(dev_p, *iova, size, dir);
+	return 0;
+}
+EXPORT_SYMBOL(geni_se_unmap_buf);
+
+static const struct of_device_id geni_se_dt_match[] = {
+	{ .compatible = "qcom,geni-se-qup", },
+	{}
+};
+
+static int geni_se_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	struct geni_se_device *geni_se_dev;
+	int ret = 0;
+
+	geni_se_dev = devm_kzalloc(dev, sizeof(*geni_se_dev), GFP_KERNEL);
+	if (!geni_se_dev)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "%s: Mandatory resource info not found\n",
+			__func__);
+		devm_kfree(dev, geni_se_dev);
+		return -EINVAL;
+	}
+
+	geni_se_dev->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR_OR_NULL(geni_se_dev->base)) {
+		dev_err(dev, "%s: Error mapping the resource\n", __func__);
+		devm_kfree(dev, geni_se_dev);
+		return -EFAULT;
+	}
+
+	geni_se_dev->m_ahb_clk = devm_clk_get(dev, "m-ahb");
+	if (IS_ERR(geni_se_dev->m_ahb_clk)) {
+		ret = PTR_ERR(geni_se_dev->m_ahb_clk);
+		dev_err(dev, "Err getting M AHB clk %d\n", ret);
+		devm_iounmap(dev, geni_se_dev->base);
+		devm_kfree(dev, geni_se_dev);
+		return ret;
+	}
+
+	geni_se_dev->s_ahb_clk = devm_clk_get(dev, "s-ahb");
+	if (IS_ERR(geni_se_dev->s_ahb_clk)) {
+		ret = PTR_ERR(geni_se_dev->s_ahb_clk);
+		dev_err(dev, "Err getting S AHB clk %d\n", ret);
+		devm_clk_put(dev, geni_se_dev->m_ahb_clk);
+		devm_iounmap(dev, geni_se_dev->base);
+		devm_kfree(dev, geni_se_dev);
+		return ret;
+	}
+
+	geni_se_dev->dev = dev;
+	mutex_init(&geni_se_dev->geni_dev_lock);
+	dev_set_drvdata(dev, geni_se_dev);
+	dev_dbg(dev, "GENI SE Driver probed\n");
+	return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+}
+
+static int geni_se_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct geni_se_device *geni_se_dev = dev_get_drvdata(dev);
+
+	devm_clk_put(dev, geni_se_dev->s_ahb_clk);
+	devm_clk_put(dev, geni_se_dev->m_ahb_clk);
+	devm_iounmap(dev, geni_se_dev->base);
+	devm_kfree(dev, geni_se_dev);
+	return 0;
+}
+
+static struct platform_driver geni_se_driver = {
+	.driver = {
+		.name = "geni_se_qup",
+		.of_match_table = geni_se_dt_match,
+	},
+	.probe = geni_se_probe,
+	.remove = geni_se_remove,
+};
+
+static int __init geni_se_driver_init(void)
+{
+	return platform_driver_register(&geni_se_driver);
+}
+arch_initcall(geni_se_driver_init);
+
+static void __exit geni_se_driver_exit(void)
+{
+	platform_driver_unregister(&geni_se_driver);
+}
+module_exit(geni_se_driver_exit);
+
+MODULE_DESCRIPTION("GENI Serial Engine Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/qcom-geni-se.h b/include/linux/qcom-geni-se.h
new file mode 100644
index 0000000..5695da9
--- /dev/null
+++ b/include/linux/qcom-geni-se.h
@@ -0,0 +1,807 @@
+/*
+ * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _LINUX_QCOM_GENI_SE
+#define _LINUX_QCOM_GENI_SE
+#include <linux/clk.h>
+#include <linux/dma-direction.h>
+#include <linux/io.h>
+#include <linux/list.h>
+
+/* Transfer mode supported by GENI Serial Engines */
+enum geni_se_xfer_mode {
+	INVALID,
+	FIFO_MODE,
+	SE_DMA,
+};
+
+/* Protocols supported by GENI Serial Engines */
+enum geni_se_protocol_types {
+	NONE,
+	SPI,
+	UART,
+	I2C,
+	I3C
+};
+
+/**
+ * struct geni_se_rsc - GENI Serial Engine Resource
+ * @wrapper_dev:	Pointer to the parent QUP Wrapper core.
+ * @se_clk:		Handle to the core serial engine clock.
+ * @geni_pinctrl:	Handle to the pinctrl configuration.
+ * @geni_gpio_active:	Handle to the default/active pinctrl state.
+ * @geni_gpi_sleep:	Handle to the sleep pinctrl state.
+ */
+struct geni_se_rsc {
+	struct device *wrapper_dev;
+	struct clk *se_clk;
+	struct pinctrl *geni_pinctrl;
+	struct pinctrl_state *geni_gpio_active;
+	struct pinctrl_state *geni_gpio_sleep;
+};
+
+#define PINCTRL_DEFAULT	"default"
+#define PINCTRL_SLEEP	"sleep"
+
+/* Common SE registers */
+#define GENI_INIT_CFG_REVISION		(0x0)
+#define GENI_S_INIT_CFG_REVISION	(0x4)
+#define GENI_FORCE_DEFAULT_REG		(0x20)
+#define GENI_OUTPUT_CTRL		(0x24)
+#define GENI_CGC_CTRL			(0x28)
+#define SE_GENI_STATUS			(0x40)
+#define GENI_SER_M_CLK_CFG		(0x48)
+#define GENI_SER_S_CLK_CFG		(0x4C)
+#define GENI_CLK_CTRL_RO		(0x60)
+#define GENI_IF_DISABLE_RO		(0x64)
+#define GENI_FW_REVISION_RO		(0x68)
+#define GENI_FW_S_REVISION_RO		(0x6C)
+#define SE_GENI_CLK_SEL			(0x7C)
+#define SE_GENI_BYTE_GRAN		(0x254)
+#define SE_GENI_DMA_MODE_EN		(0x258)
+#define SE_GENI_TX_PACKING_CFG0		(0x260)
+#define SE_GENI_TX_PACKING_CFG1		(0x264)
+#define SE_GENI_RX_PACKING_CFG0		(0x284)
+#define SE_GENI_RX_PACKING_CFG1		(0x288)
+#define SE_GENI_M_CMD0			(0x600)
+#define SE_GENI_M_CMD_CTRL_REG		(0x604)
+#define SE_GENI_M_IRQ_STATUS		(0x610)
+#define SE_GENI_M_IRQ_EN		(0x614)
+#define SE_GENI_M_IRQ_CLEAR		(0x618)
+#define SE_GENI_S_CMD0			(0x630)
+#define SE_GENI_S_CMD_CTRL_REG		(0x634)
+#define SE_GENI_S_IRQ_STATUS		(0x640)
+#define SE_GENI_S_IRQ_EN		(0x644)
+#define SE_GENI_S_IRQ_CLEAR		(0x648)
+#define SE_GENI_TX_FIFOn		(0x700)
+#define SE_GENI_RX_FIFOn		(0x780)
+#define SE_GENI_TX_FIFO_STATUS		(0x800)
+#define SE_GENI_RX_FIFO_STATUS		(0x804)
+#define SE_GENI_TX_WATERMARK_REG	(0x80C)
+#define SE_GENI_RX_WATERMARK_REG	(0x810)
+#define SE_GENI_RX_RFR_WATERMARK_REG	(0x814)
+#define SE_GENI_IOS			(0x908)
+#define SE_GENI_M_GP_LENGTH		(0x910)
+#define SE_GENI_S_GP_LENGTH		(0x914)
+#define SE_GSI_EVENT_EN			(0xE18)
+#define SE_IRQ_EN			(0xE1C)
+#define SE_HW_PARAM_0			(0xE24)
+#define SE_HW_PARAM_1			(0xE28)
+#define SE_DMA_GENERAL_CFG		(0xE30)
+
+/* GENI_OUTPUT_CTRL fields */
+#define DEFAULT_IO_OUTPUT_CTRL_MSK	(GENMASK(6, 0))
+
+/* GENI_FORCE_DEFAULT_REG fields */
+#define FORCE_DEFAULT	(BIT(0))
+
+/* GENI_CGC_CTRL fields */
+#define CFG_AHB_CLK_CGC_ON		(BIT(0))
+#define CFG_AHB_WR_ACLK_CGC_ON		(BIT(1))
+#define DATA_AHB_CLK_CGC_ON		(BIT(2))
+#define SCLK_CGC_ON			(BIT(3))
+#define TX_CLK_CGC_ON			(BIT(4))
+#define RX_CLK_CGC_ON			(BIT(5))
+#define EXT_CLK_CGC_ON			(BIT(6))
+#define PROG_RAM_HCLK_OFF		(BIT(8))
+#define PROG_RAM_SCLK_OFF		(BIT(9))
+#define DEFAULT_CGC_EN			(GENMASK(6, 0))
+
+/* GENI_STATUS fields */
+#define M_GENI_CMD_ACTIVE		(BIT(0))
+#define S_GENI_CMD_ACTIVE		(BIT(12))
+
+/* GENI_SER_M_CLK_CFG/GENI_SER_S_CLK_CFG */
+#define SER_CLK_EN			(BIT(0))
+#define CLK_DIV_MSK			(GENMASK(15, 4))
+#define CLK_DIV_SHFT			(4)
+
+/* CLK_CTRL_RO fields */
+
+/* IF_DISABLE_RO fields */
+
+/* FW_REVISION_RO fields */
+#define FW_REV_PROTOCOL_MSK	(GENMASK(15, 8))
+#define FW_REV_PROTOCOL_SHFT	(8)
+
+/* GENI_CLK_SEL fields */
+#define CLK_SEL_MSK		(GENMASK(2, 0))
+
+/* SE_GENI_DMA_MODE_EN */
+#define GENI_DMA_MODE_EN	(BIT(0))
+
+/* GENI_M_CMD0 fields */
+#define M_OPCODE_MSK		(GENMASK(31, 27))
+#define M_OPCODE_SHFT		(27)
+#define M_PARAMS_MSK		(GENMASK(26, 0))
+
+/* GENI_M_CMD_CTRL_REG */
+#define M_GENI_CMD_CANCEL	BIT(2)
+#define M_GENI_CMD_ABORT	BIT(1)
+#define M_GENI_DISABLE		BIT(0)
+
+/* GENI_S_CMD0 fields */
+#define S_OPCODE_MSK		(GENMASK(31, 27))
+#define S_OPCODE_SHFT		(27)
+#define S_PARAMS_MSK		(GENMASK(26, 0))
+
+/* GENI_S_CMD_CTRL_REG */
+#define S_GENI_CMD_CANCEL	(BIT(2))
+#define S_GENI_CMD_ABORT	(BIT(1))
+#define S_GENI_DISABLE		(BIT(0))
+
+/* GENI_M_IRQ_EN fields */
+#define M_CMD_DONE_EN		(BIT(0))
+#define M_CMD_OVERRUN_EN	(BIT(1))
+#define M_ILLEGAL_CMD_EN	(BIT(2))
+#define M_CMD_FAILURE_EN	(BIT(3))
+#define M_CMD_CANCEL_EN		(BIT(4))
+#define M_CMD_ABORT_EN		(BIT(5))
+#define M_TIMESTAMP_EN		(BIT(6))
+#define M_RX_IRQ_EN		(BIT(7))
+#define M_GP_SYNC_IRQ_0_EN	(BIT(8))
+#define M_GP_IRQ_0_EN		(BIT(9))
+#define M_GP_IRQ_1_EN		(BIT(10))
+#define M_GP_IRQ_2_EN		(BIT(11))
+#define M_GP_IRQ_3_EN		(BIT(12))
+#define M_GP_IRQ_4_EN		(BIT(13))
+#define M_GP_IRQ_5_EN		(BIT(14))
+#define M_IO_DATA_DEASSERT_EN	(BIT(22))
+#define M_IO_DATA_ASSERT_EN	(BIT(23))
+#define M_RX_FIFO_RD_ERR_EN	(BIT(24))
+#define M_RX_FIFO_WR_ERR_EN	(BIT(25))
+#define M_RX_FIFO_WATERMARK_EN	(BIT(26))
+#define M_RX_FIFO_LAST_EN	(BIT(27))
+#define M_TX_FIFO_RD_ERR_EN	(BIT(28))
+#define M_TX_FIFO_WR_ERR_EN	(BIT(29))
+#define M_TX_FIFO_WATERMARK_EN	(BIT(30))
+#define M_SEC_IRQ_EN		(BIT(31))
+#define M_COMMON_GENI_M_IRQ_EN	(GENMASK(6, 1) | \
+				M_IO_DATA_DEASSERT_EN | \
+				M_IO_DATA_ASSERT_EN | M_RX_FIFO_RD_ERR_EN | \
+				M_RX_FIFO_WR_ERR_EN | M_TX_FIFO_RD_ERR_EN | \
+				M_TX_FIFO_WR_ERR_EN)
+
+/* GENI_S_IRQ_EN fields */
+#define S_CMD_DONE_EN		(BIT(0))
+#define S_CMD_OVERRUN_EN	(BIT(1))
+#define S_ILLEGAL_CMD_EN	(BIT(2))
+#define S_CMD_FAILURE_EN	(BIT(3))
+#define S_CMD_CANCEL_EN		(BIT(4))
+#define S_CMD_ABORT_EN		(BIT(5))
+#define S_GP_SYNC_IRQ_0_EN	(BIT(8))
+#define S_GP_IRQ_0_EN		(BIT(9))
+#define S_GP_IRQ_1_EN		(BIT(10))
+#define S_GP_IRQ_2_EN		(BIT(11))
+#define S_GP_IRQ_3_EN		(BIT(12))
+#define S_GP_IRQ_4_EN		(BIT(13))
+#define S_GP_IRQ_5_EN		(BIT(14))
+#define S_IO_DATA_DEASSERT_EN	(BIT(22))
+#define S_IO_DATA_ASSERT_EN	(BIT(23))
+#define S_RX_FIFO_RD_ERR_EN	(BIT(24))
+#define S_RX_FIFO_WR_ERR_EN	(BIT(25))
+#define S_RX_FIFO_WATERMARK_EN	(BIT(26))
+#define S_RX_FIFO_LAST_EN	(BIT(27))
+#define S_COMMON_GENI_S_IRQ_EN	(GENMASK(5, 1) | GENMASK(13, 9) | \
+				 S_RX_FIFO_RD_ERR_EN | S_RX_FIFO_WR_ERR_EN)
+
+/*  GENI_/TX/RX/RX_RFR/_WATERMARK_REG fields */
+#define WATERMARK_MSK		(GENMASK(5, 0))
+
+/* GENI_TX_FIFO_STATUS fields */
+#define TX_FIFO_WC		(GENMASK(27, 0))
+
+/*  GENI_RX_FIFO_STATUS fields */
+#define RX_LAST			(BIT(31))
+#define RX_LAST_BYTE_VALID_MSK	(GENMASK(30, 28))
+#define RX_LAST_BYTE_VALID_SHFT	(28)
+#define RX_FIFO_WC_MSK		(GENMASK(24, 0))
+
+/* SE_GSI_EVENT_EN fields */
+#define DMA_RX_EVENT_EN		(BIT(0))
+#define DMA_TX_EVENT_EN		(BIT(1))
+#define GENI_M_EVENT_EN		(BIT(2))
+#define GENI_S_EVENT_EN		(BIT(3))
+
+/* SE_GENI_IOS fields */
+#define IO2_DATA_IN		(BIT(1))
+#define RX_DATA_IN		(BIT(0))
+
+/* SE_IRQ_EN fields */
+#define DMA_RX_IRQ_EN		(BIT(0))
+#define DMA_TX_IRQ_EN		(BIT(1))
+#define GENI_M_IRQ_EN		(BIT(2))
+#define GENI_S_IRQ_EN		(BIT(3))
+
+/* SE_HW_PARAM_0 fields */
+#define TX_FIFO_WIDTH_MSK	(GENMASK(29, 24))
+#define TX_FIFO_WIDTH_SHFT	(24)
+#define TX_FIFO_DEPTH_MSK	(GENMASK(21, 16))
+#define TX_FIFO_DEPTH_SHFT	(16)
+
+/* SE_HW_PARAM_1 fields */
+#define RX_FIFO_WIDTH_MSK	(GENMASK(29, 24))
+#define RX_FIFO_WIDTH_SHFT	(24)
+#define RX_FIFO_DEPTH_MSK	(GENMASK(21, 16))
+#define RX_FIFO_DEPTH_SHFT	(16)
+
+/* SE_DMA_GENERAL_CFG */
+#define DMA_RX_CLK_CGC_ON	(BIT(0))
+#define DMA_TX_CLK_CGC_ON	(BIT(1))
+#define DMA_AHB_SLV_CFG_ON	(BIT(2))
+#define AHB_SEC_SLV_CLK_CGC_ON	(BIT(3))
+#define DUMMY_RX_NON_BUFFERABLE	(BIT(4))
+#define RX_DMA_ZERO_PADDING_EN	(BIT(5))
+#define RX_DMA_IRQ_DELAY_MSK	(GENMASK(8, 6))
+#define RX_DMA_IRQ_DELAY_SHFT	(6)
+
+#define SE_DMA_TX_PTR_L		(0xC30)
+#define SE_DMA_TX_PTR_H		(0xC34)
+#define SE_DMA_TX_ATTR		(0xC38)
+#define SE_DMA_TX_LEN		(0xC3C)
+#define SE_DMA_TX_IRQ_STAT	(0xC40)
+#define SE_DMA_TX_IRQ_CLR	(0xC44)
+#define SE_DMA_TX_IRQ_EN	(0xC48)
+#define SE_DMA_TX_IRQ_EN_SET	(0xC4C)
+#define SE_DMA_TX_IRQ_EN_CLR	(0xC50)
+#define SE_DMA_TX_LEN_IN	(0xC54)
+#define SE_DMA_TX_FSM_RST	(0xC58)
+#define SE_DMA_TX_MAX_BURST	(0xC5C)
+
+#define SE_DMA_RX_PTR_L		(0xD30)
+#define SE_DMA_RX_PTR_H		(0xD34)
+#define SE_DMA_RX_ATTR		(0xD38)
+#define SE_DMA_RX_LEN		(0xD3C)
+#define SE_DMA_RX_IRQ_STAT	(0xD40)
+#define SE_DMA_RX_IRQ_CLR	(0xD44)
+#define SE_DMA_RX_IRQ_EN	(0xD48)
+#define SE_DMA_RX_IRQ_EN_SET	(0xD4C)
+#define SE_DMA_RX_IRQ_EN_CLR	(0xD50)
+#define SE_DMA_RX_LEN_IN	(0xD54)
+#define SE_DMA_RX_FSM_RST	(0xD58)
+#define SE_DMA_RX_MAX_BURST	(0xD5C)
+#define SE_DMA_RX_FLUSH		(0xD60)
+
+/* SE_DMA_TX_IRQ_STAT Register fields */
+#define TX_DMA_DONE		(BIT(0))
+#define TX_EOT			(BIT(1))
+#define TX_SBE			(BIT(2))
+#define TX_RESET_DONE		(BIT(3))
+
+/* SE_DMA_RX_IRQ_STAT Register fields */
+#define RX_DMA_DONE		(BIT(0))
+#define RX_EOT			(BIT(1))
+#define RX_SBE			(BIT(2))
+#define RX_RESET_DONE		(BIT(3))
+#define RX_FLUSH_DONE		(BIT(4))
+#define RX_GENI_GP_IRQ		(GENMASK(10, 5))
+#define RX_GENI_CANCEL_IRQ	(BIT(11))
+#define RX_GENI_GP_IRQ_EXT	(GENMASK(13, 12))
+
+#ifdef CONFIG_QCOM_GENI_SE
+/**
+ * geni_read_reg_nolog() - Helper function to read from a GENI register
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ *
+ * Return:	Return the contents of the register.
+ */
+unsigned int geni_read_reg_nolog(void __iomem *base, int offset);
+
+/**
+ * geni_write_reg_nolog() - Helper function to write into a GENI register
+ * @value:	Value to be written into the register.
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ */
+void geni_write_reg_nolog(unsigned int value, void __iomem *base, int offset);
+
+/**
+ * geni_read_reg() - Helper function to read from a GENI register
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ *
+ * Return:	Return the contents of the register.
+ */
+unsigned int geni_read_reg(void __iomem *base, int offset);
+
+/**
+ * geni_write_reg() - Helper function to write into a GENI register
+ * @value:	Value to be written into the register.
+ * @base:	Base address of the serial engine's register block.
+ * @offset:	Offset within the serial engine's register block.
+ */
+void geni_write_reg(unsigned int value, void __iomem *base, int offset);
+
+/**
+ * geni_get_qup_hw_version() - Read the QUP Wrapper Hardware version
+ * @wrapper_dev:	Pointer to the corresponding QUP wrapper core.
+ * @major:		Buffer for Major Version field.
+ * @minor:		Buffer for Minor Version field.
+ * @step:		Buffer for Step Version field.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_get_qup_hw_version(struct device *wrapper_dev, unsigned int *major,
+			    unsigned int *minor, unsigned int *step);
+
+/**
+ * geni_se_get_proto() - Read the protocol configured for a serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * Return:	Protocol value as configured in the serial engine.
+ */
+int geni_se_get_proto(void __iomem *base);
+
+/**
+ * geni_se_init() - Initialize the GENI Serial Engine
+ * @base:	Base address of the serial engine's register block.
+ * @rx_wm:	Receive watermark to be configured.
+ * @rx_rfr_wm:	Ready-for-receive watermark to be configured.
+ *
+ * This function is used to initialize the GENI serial engine, configure
+ * the transfer mode, receive watermark and ready-for-receive watermarks.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_init(void __iomem *base, unsigned int rx_wm, unsigned int rx_rfr);
+
+/**
+ * geni_se_select_mode() - Select the serial engine transfer mode
+ * @base:	Base address of the serial engine's register block.
+ * @mode:	Transfer mode to be selected.
+ *
+ * Return:	0 on success, standard Linux error codes on failure.
+ */
+int geni_se_select_mode(void __iomem *base, int mode);
+
+/**
+ * geni_se_setup_m_cmd() - Setup the primary sequencer
+ * @base:	Base address of the serial engine's register block.
+ * @cmd:	Command/Operation to setup in the primary sequencer.
+ * @params:	Parameter for the sequencer command.
+ *
+ * This function is used to configure the primary sequencer with the
+ * command and its assoicated parameters.
+ */
+void geni_se_setup_m_cmd(void __iomem *base, u32 cmd, u32 params);
+
+/**
+ * geni_se_setup_s_cmd() - Setup the secondary sequencer
+ * @base:	Base address of the serial engine's register block.
+ * @cmd:	Command/Operation to setup in the secondary sequencer.
+ * @params:	Parameter for the sequencer command.
+ *
+ * This function is used to configure the secondary sequencer with the
+ * command and its assoicated parameters.
+ */
+void geni_se_setup_s_cmd(void __iomem *base, u32 cmd, u32 params);
+
+/**
+ * geni_se_cancel_m_cmd() - Cancel the command configured in the primary
+ *                          sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to cancel the currently configured command in the
+ * primary sequencer.
+ */
+void geni_se_cancel_m_cmd(void __iomem *base);
+
+/**
+ * geni_se_cancel_s_cmd() - Cancel the command configured in the secondary
+ *			    sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to cancel the currently configured command in the
+ * secondary sequencer.
+ */
+void geni_se_cancel_s_cmd(void __iomem *base);
+
+/**
+ * geni_se_abort_m_cmd() - Abort the command configured in the primary sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to force abort the currently configured command in the
+ * primary sequencer.
+ */
+void geni_se_abort_m_cmd(void __iomem *base);
+
+/**
+ * geni_se_abort_s_cmd() - Abort the command configured in the secondary
+ *			   sequencer
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to force abort the currently configured command in the
+ * secondary sequencer.
+ */
+void geni_se_abort_s_cmd(void __iomem *base);
+
+/**
+ * geni_se_get_tx_fifo_depth() - Get the TX fifo depth of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to get the depth i.e. number of elements in the
+ * TX fifo of the serial engine.
+ *
+ * Return:	TX fifo depth in units of FIFO words.
+ */
+int geni_se_get_tx_fifo_depth(void __iomem *base);
+
+/**
+ * geni_se_get_tx_fifo_width() - Get the TX fifo width of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to get the width i.e. word size per element in the
+ * TX fifo of the serial engine.
+ *
+ * Return:	TX fifo width in bits.
+ */
+int geni_se_get_tx_fifo_width(void __iomem *base);
+
+/**
+ * geni_se_get_rx_fifo_depth() - Get the RX fifo depth of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ *
+ * This function is used to get the depth i.e. number of elements in the
+ * RX fifo of the serial engine.
+ *
+ * Return:	RX fifo depth in units of FIFO words.
+ */
+int geni_se_get_rx_fifo_depth(void __iomem *base);
+
+/**
+ * geni_se_get_packing_config() - Get the packing configuration based on input
+ * @bpw:	Bits of data per transfer word.
+ * @pack_words:	Number of words per fifo element.
+ * @msb_to_lsb:	Transfer from MSB to LSB or vice-versa.
+ * @cfg0:	Output buffer to hold the first half of configuration.
+ * @cfg1:	Output buffer to hold the second half of configuration.
+ *
+ * This function is used to calculate the packing configuration based on
+ * the input packing requirement and the configuration logic.
+ */
+void geni_se_get_packing_config(int bpw, int pack_words, bool msb_to_lsb,
+				unsigned long *cfg0, unsigned long *cfg1);
+
+/**
+ * geni_se_config_packing() - Packing configuration of the serial engine
+ * @base:	Base address of the serial engine's register block.
+ * @bpw:	Bits of data per transfer word.
+ * @pack_words:	Number of words per fifo element.
+ * @msb_to_lsb:	Transfer from MSB to LSB or vice-versa.
+ *
+ * This function is used to configure the packing rules for the current
+ * transfer.
+ */
+void geni_se_config_packing(void __iomem *base, int bpw, int pack_words,
+			    bool msb_to_lsb);
+
+/**
+ * geni_se_resources_off() - Turn off resources associated with the serial
+ *                           engine
+ * @rsc:	Handle to resources associated with the serial engine.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_resources_off(struct geni_se_rsc *rsc);
+
+/**
+ * geni_se_resources_on() - Turn on resources associated with the serial
+ *                           engine
+ * @rsc:	Handle to resources associated with the serial engine.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_resources_on(struct geni_se_rsc *rsc);
+
+/**
+ * geni_se_clk_tbl_get() - Get the clock table to program DFS
+ * @rsc:	Resource for which the clock table is requested.
+ * @tbl:	Table in which the output is returned.
+ *
+ * This function is called by the protocol drivers to determine the different
+ * clock frequencies supported by Serail Engine Core Clock. The protocol
+ * drivers use the output to determine the clock frequency index to be
+ * programmed into DFS.
+ *
+ * Return:	number of valid performance levels in the table on success,
+ *		standard Linux error codes on failure.
+ */
+int geni_se_clk_tbl_get(struct geni_se_rsc *rsc, unsigned long **tbl);
+
+/**
+ * geni_se_clk_freq_match() - Get the matching or closest SE clock frequency
+ * @rsc:	Resource for which the clock frequency is requested.
+ * @req_freq:	Requested clock frequency.
+ * @index:	Index of the resultant frequency in the table.
+ * @res_freq:	Resultant frequency which matches or is closer to the
+ *		requested frequency.
+ * @exact:	Flag to indicate exact multiple requirement of the requested
+ *		frequency .
+ *
+ * This function is called by the protocol drivers to determine the matching
+ * or closest frequency of the Serial Engine clock to be selected in order
+ * to meet the performance requirements.
+ *
+ * Return:	0 on success, standard Linux error codes on failure.
+ */
+int geni_se_clk_freq_match(struct geni_se_rsc *rsc, unsigned long req_freq,
+			   unsigned int *index, unsigned long *res_freq,
+			   bool exact);
+
+/**
+ * geni_se_tx_dma_prep() - Prepare the Serial Engine for TX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the TX buffer is mapped.
+ * @base:		Base address of the SE register block.
+ * @tx_buf:		Pointer to the TX buffer.
+ * @tx_len:		Length of the TX buffer.
+ * @tx_dma:		Pointer to store the mapped DMA address.
+ *
+ * This function is used to prepare the buffers for DMA TX.
+ *
+ * Return:	0 on success, standard Linux error codes on error/failure.
+ */
+int geni_se_tx_dma_prep(struct device *wrapper_dev, void __iomem *base,
+			void *tx_buf, int tx_len, dma_addr_t *tx_dma);
+
+/**
+ * geni_se_rx_dma_prep() - Prepare the Serial Engine for RX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the TX buffer is mapped.
+ * @base:		Base address of the SE register block.
+ * @rx_buf:		Pointer to the RX buffer.
+ * @rx_len:		Length of the RX buffer.
+ * @rx_dma:		Pointer to store the mapped DMA address.
+ *
+ * This function is used to prepare the buffers for DMA RX.
+ *
+ * Return:	0 on success, standard Linux error codes on error/failure.
+ */
+int geni_se_rx_dma_prep(struct device *wrapper_dev, void __iomem *base,
+			void *rx_buf, int rx_len, dma_addr_t *rx_dma);
+
+/**
+ * geni_se_tx_dma_unprep() - Unprepare the Serial Engine after TX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the TX buffer is mapped.
+ * @tx_dma:		DMA address of the TX buffer.
+ * @tx_len:		Length of the TX buffer.
+ *
+ * This function is used to unprepare the DMA buffers after DMA TX.
+ */
+void geni_se_tx_dma_unprep(struct device *wrapper_dev,
+			   dma_addr_t tx_dma, int tx_len);
+
+/**
+ * geni_se_rx_dma_unprep() - Unprepare the Serial Engine after RX DMA transfer
+ * @wrapper_dev:	QUP Wrapper Device to which the TX buffer is mapped.
+ * @rx_dma:		DMA address of the RX buffer.
+ * @rx_len:		Length of the RX buffer.
+ *
+ * This function is used to unprepare the DMA buffers after DMA RX.
+ */
+void geni_se_rx_dma_unprep(struct device *wrapper_dev,
+			   dma_addr_t rx_dma, int rx_len);
+
+/**
+ * geni_se_map_buf() - Map a single buffer into QUP wrapper device
+ * @wrapper_dev:	Pointer to the corresponding QUP wrapper core.
+ * @iova:		Pointer in which the mapped virtual address is stored.
+ * @buf:		Address of the buffer that needs to be mapped.
+ * @size:		Size of the buffer.
+ * @dir:		Direction of the DMA transfer.
+ *
+ * This function is used to map an already allocated buffer into the
+ * QUP device space.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_map_buf(struct device *wrapper_dev, dma_addr_t *iova,
+		    void *buf, size_t size, enum dma_data_direction dir);
+
+/**
+ * geni_se_unmap_buf() - Unmap a single buffer from QUP wrapper device
+ * @wrapper_dev:	Pointer to the corresponding QUP wrapper core.
+ * @iova:		Pointer in which the mapped virtual address is stored.
+ * @size:		Size of the buffer.
+ * @dir:		Direction of the DMA transfer.
+ *
+ * This function is used to unmap an already mapped buffer from the
+ * QUP device space.
+ *
+ * Return:	0 on success, standard Linux error codes on failure/error.
+ */
+int geni_se_unmap_buf(struct device *wrapper_dev, dma_addr_t *iova,
+		      size_t size, enum dma_data_direction dir);
+#else
+static inline unsigned int geni_read_reg_nolog(void __iomem *base, int offset)
+{
+	return 0;
+}
+
+static inline void geni_write_reg_nolog(unsigned int value,
+					void __iomem *base, int offset)
+{
+}
+
+static inline unsigned int geni_read_reg(void __iomem *base, int offset)
+{
+	return 0;
+}
+
+static inline void geni_write_reg(unsigned int value, void __iomem *base,
+				  int offset)
+{
+}
+
+static inline int geni_get_qup_hw_version(struct device *wrapper_dev,
+					  unsigned int *major,
+					  unsigned int *minor,
+					  unsigned int *step)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_get_proto(void __iomem *base)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_init(void __iomem *base,
+			       unsigned int rx_wm, unsigned int rx_rfr)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_select_mode(void __iomem *base, int mode)
+{
+	return -ENXIO;
+}
+
+static inline void geni_se_setup_m_cmd(void __iomem *base, u32 cmd,
+				       u32 params)
+{
+}
+
+static inline void geni_se_setup_s_cmd(void __iomem *base, u32 cmd,
+				       u32 params)
+{
+}
+
+static inline void geni_se_cancel_m_cmd(void __iomem *base)
+{
+}
+
+static inline void geni_se_cancel_s_cmd(void __iomem *base)
+{
+}
+
+static inline void geni_se_abort_m_cmd(void __iomem *base)
+{
+}
+
+static inline void geni_se_abort_s_cmd(void __iomem *base)
+{
+}
+
+static inline int geni_se_get_tx_fifo_depth(void __iomem *base)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_get_tx_fifo_width(void __iomem *base)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_get_rx_fifo_depth(void __iomem *base)
+{
+	return -ENXIO;
+}
+
+static inline void geni_se_get_packing_config(int bpw, int pack_words,
+					      bool msb_to_lsb,
+					      unsigned long *cfg0,
+					      unsigned long *cfg1)
+{
+}
+
+static inline void geni_se_config_packing(void __iomem *base, int bpw,
+					  int pack_words, bool msb_to_lsb)
+{
+}
+
+static inline int geni_se_resources_on(struct geni_se_rsc *rsc)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_resources_off(struct geni_se_rsc *rsc)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_clk_tbl_get(struct geni_se_rsc *rsc,
+				      unsigned long **tbl)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_clk_freq_match(struct geni_se_rsc *rsc,
+					 unsigned long req_freq,
+					 unsigned int *index,
+					 unsigned long *res_freq, bool exact)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_tx_dma_prep(struct device *wrapper_dev,
+				      void __iomem *base, void *tx_buf,
+				      int tx_len, dma_addr_t *tx_dma)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_rx_dma_prep(struct device *wrapper_dev,
+				      void __iomem *base, void *rx_buf,
+				      int rx_len, dma_addr_t *rx_dma)
+{
+	return -ENXIO;
+}
+
+static inline void geni_se_tx_dma_unprep(struct device *wrapper_dev,
+					 dma_addr_t tx_dma, int tx_len)
+{
+}
+
+static inline void geni_se_rx_dma_unprep(struct device *wrapper_dev,
+					 dma_addr_t rx_dma, int rx_len)
+{
+}
+
+static inline int geni_se_map_buf(struct device *wrapper_dev,
+				  dma_addr_t *iova, void *buf, size_t size,
+				  enum dma_data_direction dir)
+{
+	return -ENXIO;
+}
+
+static inline int geni_se_unmap_buf(struct device *wrapper_dev,
+				    dma_addr_t *iova, size_t size,
+				    enum dma_data_direction dir)
+{
+	return -ENXIO;
+
+}
+
+#endif
+#endif
-- 
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a Linux Foundation Collaborative Project

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