drm/msm: add sde io util API support

Sde io util provides apis for clock management,
regulator management, gpio, register read/write,
etc. This enables the APIs callers to manage
the hardware resources. This patch adds the
io util API support to msm drm driver.

Change-Id: I3b61d42d15659eccde4303e0f68615620b344075
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>

1 files changed, 113 insertions, 0 deletions

diff --git a/include/linux/sde_io_util.h b/include/linux/sde_io_util.h
new file mode 100644
index 000000000000..6bd5c168ecd8
--- /dev/null
+++ b/include/linux/sde_io_util.h
@@ -0,0 +1,113 @@
+/* Copyright (c) 2012, 2017, 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 __SDE_IO_UTIL_H__
+#define __SDE_IO_UTIL_H__
+
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/i2c.h>
+#include <linux/types.h>
+
+#ifdef DEBUG
+#define DEV_DBG(fmt, args...)   pr_err(fmt, ##args)
+#else
+#define DEV_DBG(fmt, args...)   pr_debug(fmt, ##args)
+#endif
+#define DEV_INFO(fmt, args...)  pr_info(fmt, ##args)
+#define DEV_WARN(fmt, args...)  pr_warn(fmt, ##args)
+#define DEV_ERR(fmt, args...)   pr_err(fmt, ##args)
+
+struct dss_io_data {
+	u32 len;
+	void __iomem *base;
+};
+
+void dss_reg_w(struct dss_io_data *io, u32 offset, u32 value, u32 debug);
+u32 dss_reg_r(struct dss_io_data *io, u32 offset, u32 debug);
+void dss_reg_dump(void __iomem *base, u32 len, const char *prefix, u32 debug);
+
+#define DSS_REG_W_ND(io, offset, val)  dss_reg_w(io, offset, val, false)
+#define DSS_REG_W(io, offset, val)     dss_reg_w(io, offset, val, true)
+#define DSS_REG_R_ND(io, offset)       dss_reg_r(io, offset, false)
+#define DSS_REG_R(io, offset)          dss_reg_r(io, offset, true)
+
+enum dss_vreg_type {
+	DSS_REG_LDO,
+	DSS_REG_VS,
+};
+
+struct dss_vreg {
+	struct regulator *vreg; /* vreg handle */
+	char vreg_name[32];
+	int min_voltage;
+	int max_voltage;
+	int enable_load;
+	int disable_load;
+	int pre_on_sleep;
+	int post_on_sleep;
+	int pre_off_sleep;
+	int post_off_sleep;
+};
+
+struct dss_gpio {
+	unsigned int gpio;
+	unsigned int value;
+	char gpio_name[32];
+};
+
+enum dss_clk_type {
+	DSS_CLK_AHB, /* no set rate. rate controlled through rpm */
+	DSS_CLK_PCLK,
+	DSS_CLK_OTHER,
+};
+
+struct dss_clk {
+	struct clk *clk; /* clk handle */
+	char clk_name[32];
+	enum dss_clk_type type;
+	unsigned long rate;
+	unsigned long max_rate;
+};
+
+struct dss_module_power {
+	unsigned int num_vreg;
+	struct dss_vreg *vreg_config;
+	unsigned int num_gpio;
+	struct dss_gpio *gpio_config;
+	unsigned int num_clk;
+	struct dss_clk *clk_config;
+};
+
+int msm_dss_ioremap_byname(struct platform_device *pdev,
+	struct dss_io_data *io_data, const char *name);
+void msm_dss_iounmap(struct dss_io_data *io_data);
+
+int msm_dss_enable_gpio(struct dss_gpio *in_gpio, int num_gpio, int enable);
+int msm_dss_gpio_enable(struct dss_gpio *in_gpio, int num_gpio, int enable);
+
+int msm_dss_config_vreg(struct device *dev, struct dss_vreg *in_vreg,
+	int num_vreg, int config);
+int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg,	int enable);
+
+int msm_dss_get_clk(struct device *dev, struct dss_clk *clk_arry, int num_clk);
+void msm_dss_put_clk(struct dss_clk *clk_arry, int num_clk);
+int msm_dss_clk_set_rate(struct dss_clk *clk_arry, int num_clk);
+int msm_dss_enable_clk(struct dss_clk *clk_arry, int num_clk, int enable);
+
+int sde_i2c_byte_read(struct i2c_client *client, uint8_t slave_addr,
+		       uint8_t reg_offset, uint8_t *read_buf);
+int sde_i2c_byte_write(struct i2c_client *client, uint8_t slave_addr,
+			uint8_t reg_offset, uint8_t *value);
+
+#endif /* __SDE_IO_UTIL_H__ */