500 lines
13 KiB
C
500 lines
13 KiB
C
/*
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* Copyright (C) 2009 Nokia Corporation
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* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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*
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* Some code and ideas taken from drivers/video/omap/ driver
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* by Imre Deak.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __OMAP2_DSS_H
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#define __OMAP2_DSS_H
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#include <linux/interrupt.h>
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#include "omapdss.h"
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struct dispc_device;
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struct dss_debugfs_entry;
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struct platform_device;
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struct seq_file;
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#define MAX_DSS_LCD_MANAGERS 3
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#define MAX_NUM_DSI 2
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#ifdef DSS_SUBSYS_NAME
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#define pr_fmt(fmt) DSS_SUBSYS_NAME ": " fmt
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#else
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#define pr_fmt(fmt) fmt
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#endif
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#define DSSDBG(format, ...) \
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pr_debug(format, ## __VA_ARGS__)
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#ifdef DSS_SUBSYS_NAME
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#define DSSERR(format, ...) \
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pr_err("omapdss " DSS_SUBSYS_NAME " error: " format, ##__VA_ARGS__)
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#else
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#define DSSERR(format, ...) \
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pr_err("omapdss error: " format, ##__VA_ARGS__)
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#endif
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#ifdef DSS_SUBSYS_NAME
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#define DSSINFO(format, ...) \
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pr_info("omapdss " DSS_SUBSYS_NAME ": " format, ##__VA_ARGS__)
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#else
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#define DSSINFO(format, ...) \
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pr_info("omapdss: " format, ## __VA_ARGS__)
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#endif
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#ifdef DSS_SUBSYS_NAME
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#define DSSWARN(format, ...) \
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pr_warn("omapdss " DSS_SUBSYS_NAME ": " format, ##__VA_ARGS__)
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#else
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#define DSSWARN(format, ...) \
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pr_warn("omapdss: " format, ##__VA_ARGS__)
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#endif
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/* OMAP TRM gives bitfields as start:end, where start is the higher bit
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number. For example 7:0 */
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#define FLD_MASK(start, end) (((1 << ((start) - (end) + 1)) - 1) << (end))
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#define FLD_VAL(val, start, end) (((val) << (end)) & FLD_MASK(start, end))
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#define FLD_GET(val, start, end) (((val) & FLD_MASK(start, end)) >> (end))
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#define FLD_MOD(orig, val, start, end) \
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(((orig) & ~FLD_MASK(start, end)) | FLD_VAL(val, start, end))
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enum dss_model {
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DSS_MODEL_OMAP2,
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DSS_MODEL_OMAP3,
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DSS_MODEL_OMAP4,
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DSS_MODEL_OMAP5,
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DSS_MODEL_DRA7,
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};
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enum dss_io_pad_mode {
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DSS_IO_PAD_MODE_RESET,
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DSS_IO_PAD_MODE_RFBI,
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DSS_IO_PAD_MODE_BYPASS,
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};
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enum dss_hdmi_venc_clk_source_select {
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DSS_VENC_TV_CLK = 0,
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DSS_HDMI_M_PCLK = 1,
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};
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enum dss_dsi_content_type {
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DSS_DSI_CONTENT_DCS,
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DSS_DSI_CONTENT_GENERIC,
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};
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enum dss_clk_source {
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DSS_CLK_SRC_FCK = 0,
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DSS_CLK_SRC_PLL1_1,
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DSS_CLK_SRC_PLL1_2,
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DSS_CLK_SRC_PLL1_3,
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DSS_CLK_SRC_PLL2_1,
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DSS_CLK_SRC_PLL2_2,
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DSS_CLK_SRC_PLL2_3,
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DSS_CLK_SRC_HDMI_PLL,
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};
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enum dss_pll_id {
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DSS_PLL_DSI1,
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DSS_PLL_DSI2,
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DSS_PLL_HDMI,
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DSS_PLL_VIDEO1,
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DSS_PLL_VIDEO2,
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};
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struct dss_pll;
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#define DSS_PLL_MAX_HSDIVS 4
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enum dss_pll_type {
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DSS_PLL_TYPE_A,
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DSS_PLL_TYPE_B,
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};
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/*
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* Type-A PLLs: clkout[]/mX[] refer to hsdiv outputs m4, m5, m6, m7.
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* Type-B PLLs: clkout[0] refers to m2.
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*/
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struct dss_pll_clock_info {
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/* rates that we get with dividers below */
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unsigned long fint;
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unsigned long clkdco;
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unsigned long clkout[DSS_PLL_MAX_HSDIVS];
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/* dividers */
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u16 n;
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u16 m;
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u32 mf;
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u16 mX[DSS_PLL_MAX_HSDIVS];
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u16 sd;
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};
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struct dss_pll_ops {
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int (*enable)(struct dss_pll *pll);
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void (*disable)(struct dss_pll *pll);
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int (*set_config)(struct dss_pll *pll,
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const struct dss_pll_clock_info *cinfo);
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};
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struct dss_pll_hw {
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enum dss_pll_type type;
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unsigned int n_max;
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unsigned int m_min;
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unsigned int m_max;
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unsigned int mX_max;
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unsigned long fint_min, fint_max;
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unsigned long clkdco_min, clkdco_low, clkdco_max;
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u8 n_msb, n_lsb;
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u8 m_msb, m_lsb;
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u8 mX_msb[DSS_PLL_MAX_HSDIVS], mX_lsb[DSS_PLL_MAX_HSDIVS];
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bool has_stopmode;
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bool has_freqsel;
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bool has_selfreqdco;
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bool has_refsel;
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/* DRA7 errata i886: use high N & M to avoid jitter */
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bool errata_i886;
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};
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struct dss_pll {
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const char *name;
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enum dss_pll_id id;
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struct dss_device *dss;
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struct clk *clkin;
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struct regulator *regulator;
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void __iomem *base;
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const struct dss_pll_hw *hw;
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const struct dss_pll_ops *ops;
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struct dss_pll_clock_info cinfo;
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};
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/* Defines a generic omap register field */
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struct dss_reg_field {
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u8 start, end;
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};
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struct dispc_clock_info {
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/* rates that we get with dividers below */
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unsigned long lck;
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unsigned long pck;
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/* dividers */
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u16 lck_div;
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u16 pck_div;
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};
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struct dss_lcd_mgr_config {
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enum dss_io_pad_mode io_pad_mode;
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bool stallmode;
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bool fifohandcheck;
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struct dispc_clock_info clock_info;
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int video_port_width;
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int lcden_sig_polarity;
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};
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#define DSS_SZ_REGS SZ_512
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struct dss_device {
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struct platform_device *pdev;
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void __iomem *base;
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struct regmap *syscon_pll_ctrl;
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u32 syscon_pll_ctrl_offset;
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struct clk *parent_clk;
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struct clk *dss_clk;
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unsigned long dss_clk_rate;
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unsigned long cache_req_pck;
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unsigned long cache_prate;
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struct dispc_clock_info cache_dispc_cinfo;
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enum dss_clk_source dsi_clk_source[MAX_NUM_DSI];
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enum dss_clk_source dispc_clk_source;
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enum dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS];
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bool ctx_valid;
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u32 ctx[DSS_SZ_REGS / sizeof(u32)];
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const struct dss_features *feat;
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struct {
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struct dentry *root;
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struct dss_debugfs_entry *clk;
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struct dss_debugfs_entry *dss;
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} debugfs;
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struct dss_pll *plls[4];
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struct dss_pll *video1_pll;
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struct dss_pll *video2_pll;
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struct dispc_device *dispc;
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const struct dispc_ops *dispc_ops;
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};
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/* core */
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static inline int dss_set_min_bus_tput(struct device *dev, unsigned long tput)
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{
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/* To be implemented when the OMAP platform will provide this feature */
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return 0;
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}
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static inline bool dss_mgr_is_lcd(enum omap_channel id)
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{
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if (id == OMAP_DSS_CHANNEL_LCD || id == OMAP_DSS_CHANNEL_LCD2 ||
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id == OMAP_DSS_CHANNEL_LCD3)
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return true;
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else
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return false;
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}
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/* DSS */
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#if defined(CONFIG_OMAP2_DSS_DEBUGFS)
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struct dss_debugfs_entry *
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dss_debugfs_create_file(struct dss_device *dss, const char *name,
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int (*show_fn)(struct seq_file *s, void *data),
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void *data);
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void dss_debugfs_remove_file(struct dss_debugfs_entry *entry);
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#else
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static inline struct dss_debugfs_entry *
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dss_debugfs_create_file(struct dss_device *dss, const char *name,
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int (*show_fn)(struct seq_file *s, void *data),
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void *data)
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{
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return NULL;
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}
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static inline void dss_debugfs_remove_file(struct dss_debugfs_entry *entry)
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{
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}
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#endif /* CONFIG_OMAP2_DSS_DEBUGFS */
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struct dss_device *dss_get_device(struct device *dev);
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int dss_runtime_get(struct dss_device *dss);
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void dss_runtime_put(struct dss_device *dss);
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unsigned long dss_get_dispc_clk_rate(struct dss_device *dss);
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unsigned long dss_get_max_fck_rate(struct dss_device *dss);
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enum omap_dss_output_id dss_get_supported_outputs(struct dss_device *dss,
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enum omap_channel channel);
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int dss_dpi_select_source(struct dss_device *dss, int port,
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enum omap_channel channel);
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void dss_select_hdmi_venc_clk_source(struct dss_device *dss,
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enum dss_hdmi_venc_clk_source_select src);
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const char *dss_get_clk_source_name(enum dss_clk_source clk_src);
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/* DSS VIDEO PLL */
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struct dss_pll *dss_video_pll_init(struct dss_device *dss,
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struct platform_device *pdev, int id,
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struct regulator *regulator);
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void dss_video_pll_uninit(struct dss_pll *pll);
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void dss_ctrl_pll_enable(struct dss_pll *pll, bool enable);
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void dss_sdi_init(struct dss_device *dss, int datapairs);
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int dss_sdi_enable(struct dss_device *dss);
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void dss_sdi_disable(struct dss_device *dss);
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void dss_select_dsi_clk_source(struct dss_device *dss, int dsi_module,
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enum dss_clk_source clk_src);
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void dss_select_lcd_clk_source(struct dss_device *dss,
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enum omap_channel channel,
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enum dss_clk_source clk_src);
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enum dss_clk_source dss_get_dispc_clk_source(struct dss_device *dss);
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enum dss_clk_source dss_get_dsi_clk_source(struct dss_device *dss,
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int dsi_module);
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enum dss_clk_source dss_get_lcd_clk_source(struct dss_device *dss,
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enum omap_channel channel);
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void dss_set_venc_output(struct dss_device *dss, enum omap_dss_venc_type type);
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void dss_set_dac_pwrdn_bgz(struct dss_device *dss, bool enable);
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int dss_set_fck_rate(struct dss_device *dss, unsigned long rate);
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typedef bool (*dss_div_calc_func)(unsigned long fck, void *data);
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bool dss_div_calc(struct dss_device *dss, unsigned long pck,
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unsigned long fck_min, dss_div_calc_func func, void *data);
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/* SDI */
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#ifdef CONFIG_OMAP2_DSS_SDI
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int sdi_init_port(struct dss_device *dss, struct platform_device *pdev,
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struct device_node *port);
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void sdi_uninit_port(struct device_node *port);
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#else
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static inline int sdi_init_port(struct dss_device *dss,
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struct platform_device *pdev,
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struct device_node *port)
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{
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return 0;
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}
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static inline void sdi_uninit_port(struct device_node *port)
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{
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}
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#endif
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/* DSI */
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#ifdef CONFIG_OMAP2_DSS_DSI
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void dsi_dump_clocks(struct seq_file *s);
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void dsi_irq_handler(void);
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#endif
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/* DPI */
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#ifdef CONFIG_OMAP2_DSS_DPI
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int dpi_init_port(struct dss_device *dss, struct platform_device *pdev,
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struct device_node *port, enum dss_model dss_model);
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void dpi_uninit_port(struct device_node *port);
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#else
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static inline int dpi_init_port(struct dss_device *dss,
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struct platform_device *pdev,
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struct device_node *port,
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enum dss_model dss_model)
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{
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return 0;
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}
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static inline void dpi_uninit_port(struct device_node *port)
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{
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}
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#endif
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/* DISPC */
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void dispc_dump_clocks(struct dispc_device *dispc, struct seq_file *s);
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int dispc_runtime_get(struct dispc_device *dispc);
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void dispc_runtime_put(struct dispc_device *dispc);
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void dispc_enable_sidle(struct dispc_device *dispc);
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void dispc_disable_sidle(struct dispc_device *dispc);
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void dispc_lcd_enable_signal(struct dispc_device *dispc, bool enable);
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void dispc_pck_free_enable(struct dispc_device *dispc, bool enable);
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void dispc_enable_fifomerge(struct dispc_device *dispc, bool enable);
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typedef bool (*dispc_div_calc_func)(int lckd, int pckd, unsigned long lck,
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unsigned long pck, void *data);
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bool dispc_div_calc(struct dispc_device *dispc, unsigned long dispc_freq,
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unsigned long pck_min, unsigned long pck_max,
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dispc_div_calc_func func, void *data);
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bool dispc_mgr_timings_ok(struct dispc_device *dispc,
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enum omap_channel channel,
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const struct videomode *vm);
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int dispc_calc_clock_rates(struct dispc_device *dispc,
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unsigned long dispc_fclk_rate,
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struct dispc_clock_info *cinfo);
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void dispc_ovl_set_fifo_threshold(struct dispc_device *dispc,
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enum omap_plane_id plane, u32 low, u32 high);
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void dispc_ovl_compute_fifo_thresholds(struct dispc_device *dispc,
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enum omap_plane_id plane,
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u32 *fifo_low, u32 *fifo_high,
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bool use_fifomerge, bool manual_update);
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void dispc_mgr_set_clock_div(struct dispc_device *dispc,
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enum omap_channel channel,
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const struct dispc_clock_info *cinfo);
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int dispc_mgr_get_clock_div(struct dispc_device *dispc,
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enum omap_channel channel,
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struct dispc_clock_info *cinfo);
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void dispc_set_tv_pclk(struct dispc_device *dispc, unsigned long pclk);
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#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
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static inline void dss_collect_irq_stats(u32 irqstatus, unsigned int *irq_arr)
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{
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int b;
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for (b = 0; b < 32; ++b) {
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if (irqstatus & (1 << b))
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irq_arr[b]++;
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}
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}
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#endif
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/* PLL */
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typedef bool (*dss_pll_calc_func)(int n, int m, unsigned long fint,
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unsigned long clkdco, void *data);
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typedef bool (*dss_hsdiv_calc_func)(int m_dispc, unsigned long dispc,
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void *data);
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int dss_pll_register(struct dss_device *dss, struct dss_pll *pll);
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void dss_pll_unregister(struct dss_pll *pll);
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struct dss_pll *dss_pll_find(struct dss_device *dss, const char *name);
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struct dss_pll *dss_pll_find_by_src(struct dss_device *dss,
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enum dss_clk_source src);
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unsigned int dss_pll_get_clkout_idx_for_src(enum dss_clk_source src);
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int dss_pll_enable(struct dss_pll *pll);
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void dss_pll_disable(struct dss_pll *pll);
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int dss_pll_set_config(struct dss_pll *pll,
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const struct dss_pll_clock_info *cinfo);
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bool dss_pll_hsdiv_calc_a(const struct dss_pll *pll, unsigned long clkdco,
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unsigned long out_min, unsigned long out_max,
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dss_hsdiv_calc_func func, void *data);
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bool dss_pll_calc_a(const struct dss_pll *pll, unsigned long clkin,
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unsigned long pll_min, unsigned long pll_max,
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dss_pll_calc_func func, void *data);
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bool dss_pll_calc_b(const struct dss_pll *pll, unsigned long clkin,
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unsigned long target_clkout, struct dss_pll_clock_info *cinfo);
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int dss_pll_write_config_type_a(struct dss_pll *pll,
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const struct dss_pll_clock_info *cinfo);
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int dss_pll_write_config_type_b(struct dss_pll *pll,
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const struct dss_pll_clock_info *cinfo);
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int dss_pll_wait_reset_done(struct dss_pll *pll);
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extern struct platform_driver omap_dsshw_driver;
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extern struct platform_driver omap_dispchw_driver;
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#ifdef CONFIG_OMAP2_DSS_DSI
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extern struct platform_driver omap_dsihw_driver;
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#endif
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#ifdef CONFIG_OMAP2_DSS_VENC
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extern struct platform_driver omap_venchw_driver;
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#endif
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#ifdef CONFIG_OMAP4_DSS_HDMI
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extern struct platform_driver omapdss_hdmi4hw_driver;
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#endif
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#ifdef CONFIG_OMAP5_DSS_HDMI
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extern struct platform_driver omapdss_hdmi5hw_driver;
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#endif
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#endif
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