blob: 0ef38ce72af6b5351d154216dd9bf6f72fbaccb0 [file] [log] [blame]
/* linux/drivers/video/exynos/exynos_mipi_dsi_lowlevel.c
*
* Samsung SoC MIPI-DSI lowlevel driver.
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd
*
* InKi Dae, <inki.dae@samsung.com>
* Donghwa Lee, <dh09.lee@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/wait.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/ctype.h>
#include <linux/io.h>
#include <video/exynos_mipi_dsim.h>
#include <mach/map.h>
#include "exynos_mipi_dsi_regs.h"
void exynos_mipi_dsi_func_reset(struct mipi_dsim_device *dsim)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_SWRST);
reg |= DSIM_FUNCRST;
writel(reg, dsim->reg_base + EXYNOS_DSIM_SWRST);
}
void exynos_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_SWRST);
reg |= DSIM_SWRST;
writel(reg, dsim->reg_base + EXYNOS_DSIM_SWRST);
}
void exynos_mipi_dsi_sw_reset_release(struct mipi_dsim_device *dsim)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
reg |= INTSRC_SW_RST_RELEASE;
writel(reg, dsim->reg_base + EXYNOS_DSIM_INTSRC);
}
int exynos_mipi_dsi_get_sw_reset_release(struct mipi_dsim_device *dsim)
{
return (readl(dsim->reg_base + EXYNOS_DSIM_INTSRC)) &
INTSRC_SW_RST_RELEASE;
}
unsigned int exynos_mipi_dsi_read_interrupt_mask(struct mipi_dsim_device *dsim)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_INTMSK);
return reg;
}
void exynos_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim,
unsigned int mode, unsigned int mask)
{
unsigned int reg = 0;
if (mask)
reg |= mode;
else
reg &= ~mode;
writel(reg, dsim->reg_base + EXYNOS_DSIM_INTMSK);
}
void exynos_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim,
unsigned int cfg)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_FIFOCTRL);
writel(reg & ~(cfg), dsim->reg_base + EXYNOS_DSIM_FIFOCTRL);
mdelay(10);
reg |= cfg;
writel(reg, dsim->reg_base + EXYNOS_DSIM_FIFOCTRL);
}
/*
* this function set PLL P, M and S value in D-PHY
*/
void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim,
unsigned int value)
{
writel(DSIM_AFC_CTL(value), dsim->reg_base + EXYNOS_DSIM_PHYACCHR);
}
void exynos_mipi_dsi_set_main_stand_by(struct mipi_dsim_device *dsim,
unsigned int enable)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_MDRESOL);
reg &= ~DSIM_MAIN_STAND_BY;
if (enable)
reg |= DSIM_MAIN_STAND_BY;
writel(reg, dsim->reg_base + EXYNOS_DSIM_MDRESOL);
}
void exynos_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim,
unsigned int width_resol, unsigned int height_resol)
{
unsigned int reg;
/* standby should be set after configuration so set to not ready*/
reg = (readl(dsim->reg_base + EXYNOS_DSIM_MDRESOL)) &
~(DSIM_MAIN_STAND_BY);
writel(reg, dsim->reg_base + EXYNOS_DSIM_MDRESOL);
reg &= ~((0x7ff << 16) | (0x7ff << 0));
reg |= DSIM_MAIN_VRESOL(height_resol) | DSIM_MAIN_HRESOL(width_resol);
reg |= DSIM_MAIN_STAND_BY;
writel(reg, dsim->reg_base + EXYNOS_DSIM_MDRESOL);
}
void exynos_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim,
unsigned int cmd_allow, unsigned int vfront, unsigned int vback)
{
unsigned int reg;
reg = (readl(dsim->reg_base + EXYNOS_DSIM_MVPORCH)) &
~((DSIM_CMD_ALLOW_MASK) | (DSIM_STABLE_VFP_MASK) |
(DSIM_MAIN_VBP_MASK));
reg |= (DSIM_CMD_ALLOW_SHIFT(cmd_allow & 0xf) |
DSIM_STABLE_VFP_SHIFT(vfront & 0x7ff) |
DSIM_MAIN_VBP_SHIFT(vback & 0x7ff));
writel(reg, dsim->reg_base + EXYNOS_DSIM_MVPORCH);
}
void exynos_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim,
unsigned int front, unsigned int back)
{
unsigned int reg;
reg = (readl(dsim->reg_base + EXYNOS_DSIM_MHPORCH)) &
~((DSIM_MAIN_HFP_MASK) | (DSIM_MAIN_HBP_MASK));
reg |= DSIM_MAIN_HFP_SHIFT(front) | DSIM_MAIN_HBP_SHIFT(back);
writel(reg, dsim->reg_base + EXYNOS_DSIM_MHPORCH);
}
void exynos_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim,
unsigned int vert, unsigned int hori)
{
unsigned int reg;
reg = (readl(dsim->reg_base + EXYNOS_DSIM_MSYNC)) &
~((DSIM_MAIN_VSA_MASK) | (DSIM_MAIN_HSA_MASK));
reg |= (DSIM_MAIN_VSA_SHIFT(vert & 0x3ff) |
DSIM_MAIN_HSA_SHIFT(hori));
writel(reg, dsim->reg_base + EXYNOS_DSIM_MSYNC);
}
void exynos_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim,
unsigned int vert, unsigned int hori)
{
unsigned int reg;
reg = (readl(dsim->reg_base + EXYNOS_DSIM_SDRESOL)) &
~(DSIM_SUB_STANDY_MASK);
writel(reg, dsim->reg_base + EXYNOS_DSIM_SDRESOL);
reg &= ~(DSIM_SUB_VRESOL_MASK) | ~(DSIM_SUB_HRESOL_MASK);
reg |= (DSIM_SUB_VRESOL_SHIFT(vert & 0x7ff) |
DSIM_SUB_HRESOL_SHIFT(hori & 0x7ff));
writel(reg, dsim->reg_base + EXYNOS_DSIM_SDRESOL);
reg |= DSIM_SUB_STANDY_SHIFT(1);
writel(reg, dsim->reg_base + EXYNOS_DSIM_SDRESOL);
}
void exynos_mipi_dsi_init_config(struct mipi_dsim_device *dsim)
{
struct mipi_dsim_config *dsim_config = dsim->dsim_config;
unsigned int cfg = (readl(dsim->reg_base + EXYNOS_DSIM_CONFIG)) &
~((1 << 28) | (0x1f << 20) | (0x3 << 5));
cfg = ((DSIM_AUTO_FLUSH(dsim_config->auto_flush)) |
(DSIM_EOT_DISABLE(dsim_config->eot_disable)) |
(DSIM_AUTO_MODE_SHIFT(dsim_config->auto_vertical_cnt)) |
(DSIM_HSE_MODE_SHIFT(dsim_config->hse)) |
(DSIM_HFP_MODE_SHIFT(dsim_config->hfp)) |
(DSIM_HBP_MODE_SHIFT(dsim_config->hbp)) |
(DSIM_HSA_MODE_SHIFT(dsim_config->hsa)) |
(DSIM_NUM_OF_DATALANE_SHIFT(dsim_config->e_no_data_lane)));
writel(cfg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
}
void exynos_mipi_dsi_display_config(struct mipi_dsim_device *dsim,
struct mipi_dsim_config *dsim_config)
{
u32 reg = (readl(dsim->reg_base + EXYNOS_DSIM_CONFIG)) &
~((0x3 << 26) | (1 << 25) | (0x3 << 18) | (0x7 << 12) |
(0x3 << 16) | (0x7 << 8));
if (dsim_config->e_interface == DSIM_VIDEO)
reg |= (1 << 25);
else if (dsim_config->e_interface == DSIM_COMMAND)
reg &= ~(1 << 25);
else {
dev_err(dsim->dev, "unknown lcd type.\n");
return;
}
/* main lcd */
reg |= ((u8) (dsim_config->e_burst_mode) & 0x3) << 26 |
((u8) (dsim_config->e_virtual_ch) & 0x3) << 18 |
((u8) (dsim_config->e_pixel_format) & 0x7) << 12;
writel(reg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
}
void exynos_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, unsigned int lane,
unsigned int enable)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_CONFIG);
if (enable)
reg |= DSIM_LANE_ENx(lane);
else
reg &= ~DSIM_LANE_ENx(lane);
writel(reg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
}
void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim,
unsigned int count)
{
unsigned int cfg;
/* get the data lane number. */
cfg = DSIM_NUM_OF_DATALANE_SHIFT(count);
writel(cfg, dsim->reg_base + EXYNOS_DSIM_CONFIG);
}
void exynos_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, unsigned int enable,
unsigned int afc_code)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_PHYACCHR);
if (enable) {
reg |= (1 << 14);
reg &= ~(0x7 << 5);
reg |= (afc_code & 0x7) << 5;
} else
reg &= ~(1 << 14);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PHYACCHR);
}
void exynos_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim,
unsigned int enable)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
~(DSIM_PLL_BYPASS_SHIFT(0x1));
reg |= DSIM_PLL_BYPASS_SHIFT(enable);
writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
}
void exynos_mipi_dsi_set_pll_pms(struct mipi_dsim_device *dsim, unsigned int p,
unsigned int m, unsigned int s)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
reg |= ((p & 0x3f) << 13) | ((m & 0x1ff) << 4) | ((s & 0x7) << 1);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
}
void exynos_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim,
unsigned int freq_band)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
~(DSIM_FREQ_BAND_SHIFT(0x1f));
reg |= DSIM_FREQ_BAND_SHIFT(freq_band & 0x1f);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
}
void exynos_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim,
unsigned int pre_divider, unsigned int main_divider,
unsigned int scaler)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
~(0x7ffff << 1);
reg |= (pre_divider & 0x3f) << 13 | (main_divider & 0x1ff) << 4 |
(scaler & 0x7) << 1;
writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
}
void exynos_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim,
unsigned int lock_time)
{
writel(lock_time, dsim->reg_base + EXYNOS_DSIM_PLLTMR);
}
void exynos_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim, unsigned int enable)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
~(DSIM_PLL_EN_SHIFT(0x1));
reg |= DSIM_PLL_EN_SHIFT(enable & 0x1);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
}
void exynos_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim,
unsigned int src)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
~(DSIM_BYTE_CLK_SRC_SHIFT(0x3));
reg |= (DSIM_BYTE_CLK_SRC_SHIFT(src));
writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
}
void exynos_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim,
unsigned int enable)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
~(DSIM_BYTE_CLKEN_SHIFT(0x1));
reg |= DSIM_BYTE_CLKEN_SHIFT(enable);
writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
}
void exynos_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim,
unsigned int enable, unsigned int prs_val)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
~(DSIM_ESC_CLKEN_SHIFT(0x1) | 0xffff);
reg |= DSIM_ESC_CLKEN_SHIFT(enable);
if (enable)
reg |= prs_val;
writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
}
void exynos_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim,
unsigned int lane_sel, unsigned int enable)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
if (enable)
reg |= DSIM_LANE_ESC_CLKEN(lane_sel);
else
reg &= ~DSIM_LANE_ESC_CLKEN(lane_sel);
writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
}
void exynos_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim,
unsigned int enable)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE)) &
~(DSIM_FORCE_STOP_STATE_SHIFT(0x1));
reg |= (DSIM_FORCE_STOP_STATE_SHIFT(enable & 0x1));
writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
}
unsigned int exynos_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_STATUS);
/**
* check clock and data lane states.
* if MIPI-DSI controller was enabled at bootloader then
* TX_READY_HS_CLK is enabled otherwise STOP_STATE_CLK.
* so it should be checked for two case.
*/
if ((reg & DSIM_STOP_STATE_DAT(0xf)) &&
((reg & DSIM_STOP_STATE_CLK) ||
(reg & DSIM_TX_READY_HS_CLK)))
return 1;
return 0;
}
void exynos_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim,
unsigned int cnt_val)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE)) &
~(DSIM_STOP_STATE_CNT_SHIFT(0x7ff));
reg |= (DSIM_STOP_STATE_CNT_SHIFT(cnt_val & 0x7ff));
writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
}
void exynos_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim,
unsigned int timeout)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_TIMEOUT)) &
~(DSIM_BTA_TOUT_SHIFT(0xff));
reg |= (DSIM_BTA_TOUT_SHIFT(timeout));
writel(reg, dsim->reg_base + EXYNOS_DSIM_TIMEOUT);
}
void exynos_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim,
unsigned int timeout)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_TIMEOUT)) &
~(DSIM_LPDR_TOUT_SHIFT(0xffff));
reg |= (DSIM_LPDR_TOUT_SHIFT(timeout));
writel(reg, dsim->reg_base + EXYNOS_DSIM_TIMEOUT);
}
void exynos_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim,
unsigned int lp)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE);
reg &= ~DSIM_CMD_LPDT_LP;
if (lp)
reg |= DSIM_CMD_LPDT_LP;
writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
}
void exynos_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim,
unsigned int lp)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_ESCMODE);
reg &= ~DSIM_TX_LPDT_LP;
if (lp)
reg |= DSIM_TX_LPDT_LP;
writel(reg, dsim->reg_base + EXYNOS_DSIM_ESCMODE);
}
void exynos_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim,
unsigned int enable)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_CLKCTRL)) &
~(DSIM_TX_REQUEST_HSCLK_SHIFT(0x1));
reg |= DSIM_TX_REQUEST_HSCLK_SHIFT(enable);
writel(reg, dsim->reg_base + EXYNOS_DSIM_CLKCTRL);
}
void exynos_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim,
unsigned int swap_en)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_PHYACCHR1);
reg &= ~(0x3 << 0);
reg |= (swap_en & 0x3) << 0;
writel(reg, dsim->reg_base + EXYNOS_DSIM_PHYACCHR1);
}
void exynos_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim,
unsigned int hs_zero)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
~(0xf << 28);
reg |= ((hs_zero & 0xf) << 28);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
}
void exynos_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int prep)
{
unsigned int reg = (readl(dsim->reg_base + EXYNOS_DSIM_PLLCTRL)) &
~(0x7 << 20);
reg |= ((prep & 0x7) << 20);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PLLCTRL);
}
unsigned int exynos_mipi_dsi_read_interrupt(struct mipi_dsim_device *dsim)
{
return readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
}
void exynos_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim,
unsigned int src)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
reg |= src;
writel(reg, dsim->reg_base + EXYNOS_DSIM_INTSRC);
}
void exynos_mipi_dsi_set_interrupt(struct mipi_dsim_device *dsim,
unsigned int src, unsigned int enable)
{
unsigned int reg = 0;
if (enable)
reg |= src;
else
reg &= ~src;
writel(reg, dsim->reg_base + EXYNOS_DSIM_INTSRC);
}
unsigned int exynos_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim)
{
unsigned int reg;
reg = readl(dsim->reg_base + EXYNOS_DSIM_STATUS);
return reg & (1 << 31) ? 1 : 0;
}
unsigned int exynos_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim)
{
return readl(dsim->reg_base + EXYNOS_DSIM_FIFOCTRL) & ~(0x1f);
}
void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim,
unsigned int di, unsigned int data0, unsigned int data1)
{
unsigned int reg = (data1 << 16) | (data0 << 8) | ((di & 0x3f) << 0);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PKTHDR);
}
void exynos_mipi_dsi_rd_tx_header(struct mipi_dsim_device *dsim,
unsigned int di, unsigned int data0)
{
unsigned int reg = (data0 << 8) | (di << 0);
writel(reg, dsim->reg_base + EXYNOS_DSIM_PKTHDR);
}
unsigned int exynos_mipi_dsi_rd_rx_fifo(struct mipi_dsim_device *dsim)
{
return readl(dsim->reg_base + EXYNOS_DSIM_RXFIFO);
}
unsigned int _exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
return (reg & INTSRC_FRAME_DONE) ? 1 : 0;
}
void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim)
{
unsigned int reg = readl(dsim->reg_base + EXYNOS_DSIM_INTSRC);
writel(reg | INTSRC_FRAME_DONE, dsim->reg_base +
EXYNOS_DSIM_INTSRC);
}
void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim,
unsigned int tx_data)
{
writel(tx_data, dsim->reg_base + EXYNOS_DSIM_PAYLOAD);
}