a92947d594
MDSS io utility contains APIs to handle driver specific resources like GPIOs, power supplies, clocks and other resources. Sharing them with other drivers allow them to do resource management without re-writing the same code. Change-Id: Ib699407667239336cf82211e3f6e8eec97a104a8 Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org> [cip@codeaurora.org: Move mdss_io_util.h to include/linux] Signed-off-by: Clarence Ip <cip@codeaurora.org>
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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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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#ifndef __MDSS_IO_UTIL_H__
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#define __MDSS_IO_UTIL_H__
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/i2c.h>
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#include <linux/types.h>
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#ifdef DEBUG
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#define DEV_DBG(fmt, args...) pr_err(fmt, ##args)
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#else
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#define DEV_DBG(fmt, args...) pr_debug(fmt, ##args)
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#endif
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#define DEV_INFO(fmt, args...) pr_info(fmt, ##args)
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#define DEV_WARN(fmt, args...) pr_warn(fmt, ##args)
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#define DEV_ERR(fmt, args...) pr_err(fmt, ##args)
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struct dss_io_data {
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u32 len;
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void __iomem *base;
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};
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void dss_reg_w(struct dss_io_data *io, u32 offset, u32 value, u32 debug);
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u32 dss_reg_r(struct dss_io_data *io, u32 offset, u32 debug);
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void dss_reg_dump(void __iomem *base, u32 len, const char *prefix, u32 debug);
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#define DSS_REG_W_ND(io, offset, val) dss_reg_w(io, offset, val, false)
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#define DSS_REG_W(io, offset, val) dss_reg_w(io, offset, val, true)
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#define DSS_REG_R_ND(io, offset) dss_reg_r(io, offset, false)
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#define DSS_REG_R(io, offset) dss_reg_r(io, offset, true)
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enum dss_vreg_type {
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DSS_REG_LDO,
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DSS_REG_VS,
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};
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struct dss_vreg {
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struct regulator *vreg; /* vreg handle */
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char vreg_name[32];
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int min_voltage;
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int max_voltage;
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int enable_load;
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int disable_load;
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int pre_on_sleep;
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int post_on_sleep;
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int pre_off_sleep;
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int post_off_sleep;
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};
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struct dss_gpio {
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unsigned gpio;
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unsigned value;
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char gpio_name[32];
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};
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enum dss_clk_type {
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DSS_CLK_AHB, /* no set rate. rate controlled through rpm */
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DSS_CLK_PCLK,
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DSS_CLK_OTHER,
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};
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struct dss_clk {
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struct clk *clk; /* clk handle */
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char clk_name[32];
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enum dss_clk_type type;
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unsigned long rate;
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};
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struct dss_module_power {
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unsigned num_vreg;
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struct dss_vreg *vreg_config;
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unsigned num_gpio;
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struct dss_gpio *gpio_config;
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unsigned num_clk;
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struct dss_clk *clk_config;
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};
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int msm_dss_ioremap_byname(struct platform_device *pdev,
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struct dss_io_data *io_data, const char *name);
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void msm_dss_iounmap(struct dss_io_data *io_data);
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int msm_dss_enable_gpio(struct dss_gpio *in_gpio, int num_gpio, int enable);
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int msm_dss_gpio_enable(struct dss_gpio *in_gpio, int num_gpio, int enable);
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int msm_dss_config_vreg(struct device *dev, struct dss_vreg *in_vreg,
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int num_vreg, int config);
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int msm_dss_enable_vreg(struct dss_vreg *in_vreg, int num_vreg, int enable);
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int msm_dss_get_clk(struct device *dev, struct dss_clk *clk_arry, int num_clk);
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void msm_dss_put_clk(struct dss_clk *clk_arry, int num_clk);
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int msm_dss_clk_set_rate(struct dss_clk *clk_arry, int num_clk);
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int msm_dss_enable_clk(struct dss_clk *clk_arry, int num_clk, int enable);
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int mdss_i2c_byte_read(struct i2c_client *client, uint8_t slave_addr,
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uint8_t reg_offset, uint8_t *read_buf);
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int mdss_i2c_byte_write(struct i2c_client *client, uint8_t slave_addr,
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uint8_t reg_offset, uint8_t *value);
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#endif /* __MDSS_IO_UTIL_H__ */
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