M7350/kernel/drivers/video/msm/mipi_dsi.c
2024-09-09 08:52:07 +00:00

625 lines
15 KiB
C

/* Copyright (c) 2008-2012, 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/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <asm/system.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <mach/clk.h>
#include "msm_fb.h"
#include "mipi_dsi.h"
#include "mdp.h"
#include "mdp4.h"
u32 dsi_irq;
u32 esc_byte_ratio;
static boolean tlmm_settings = FALSE;
static int mipi_dsi_probe(struct platform_device *pdev);
static int mipi_dsi_remove(struct platform_device *pdev);
static int mipi_dsi_off(struct platform_device *pdev);
static int mipi_dsi_on(struct platform_device *pdev);
static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
static int pdev_list_cnt;
static struct mipi_dsi_platform_data *mipi_dsi_pdata;
static int vsync_gpio = -1;
static struct platform_driver mipi_dsi_driver = {
.probe = mipi_dsi_probe,
.remove = mipi_dsi_remove,
.shutdown = NULL,
.driver = {
.name = "mipi_dsi",
},
};
struct device dsi_dev;
static int mipi_dsi_off(struct platform_device *pdev)
{
int ret = 0;
struct msm_fb_data_type *mfd;
struct msm_panel_info *pinfo;
pr_debug("%s+:\n", __func__);
mfd = platform_get_drvdata(pdev);
pinfo = &mfd->panel_info;
if (mdp_rev >= MDP_REV_41)
mutex_lock(&mfd->dma->ov_mutex);
else
down(&mfd->dma->mutex);
if (mfd->panel_info.type == MIPI_CMD_PANEL) {
mipi_dsi_prepare_clocks();
mipi_dsi_ahb_ctrl(1);
mipi_dsi_clk_enable();
/* make sure dsi_cmd_mdp is idle */
mipi_dsi_cmd_mdp_busy();
}
/*
* Desctiption: change to DSI_CMD_MODE since it needed to
* tx DCS dsiplay off comamnd to panel
*/
mipi_dsi_op_mode_config(DSI_CMD_MODE);
if (mfd->panel_info.type == MIPI_CMD_PANEL) {
if (pinfo->lcd.vsync_enable) {
if (pinfo->lcd.hw_vsync_mode && vsync_gpio >= 0) {
if (MDP_REV_303 != mdp_rev)
gpio_free(vsync_gpio);
}
mipi_dsi_set_tear_off(mfd);
}
}
ret = panel_next_off(pdev);
mipi_dsi_clk_disable();
/* disbale dsi engine */
MIPI_OUTP(MIPI_DSI_BASE + 0x0000, 0);
mipi_dsi_phy_ctrl(0);
mipi_dsi_ahb_ctrl(0);
mipi_dsi_unprepare_clocks();
if (mipi_dsi_pdata && mipi_dsi_pdata->dsi_power_save)
mipi_dsi_pdata->dsi_power_save(0);
if (mdp_rev >= MDP_REV_41)
mutex_unlock(&mfd->dma->ov_mutex);
else
up(&mfd->dma->mutex);
pr_debug("%s-:\n", __func__);
return ret;
}
static int mipi_dsi_on(struct platform_device *pdev)
{
int ret = 0;
u32 clk_rate;
struct msm_fb_data_type *mfd;
struct fb_info *fbi;
struct fb_var_screeninfo *var;
struct msm_panel_info *pinfo;
struct mipi_panel_info *mipi;
u32 hbp, hfp, vbp, vfp, hspw, vspw, width, height;
u32 ystride, bpp, data;
u32 dummy_xres, dummy_yres;
int target_type = 0;
pr_debug("%s+:\n", __func__);
mfd = platform_get_drvdata(pdev);
fbi = mfd->fbi;
var = &fbi->var;
pinfo = &mfd->panel_info;
esc_byte_ratio = pinfo->mipi.esc_byte_ratio;
if (mipi_dsi_pdata && mipi_dsi_pdata->dsi_power_save)
mipi_dsi_pdata->dsi_power_save(1);
cont_splash_clk_ctrl(0);
mipi_dsi_prepare_clocks();
mipi_dsi_ahb_ctrl(1);
clk_rate = mfd->fbi->var.pixclock;
clk_rate = min(clk_rate, mfd->panel_info.clk_max);
mipi_dsi_phy_ctrl(1);
if (mdp_rev == MDP_REV_42 && mipi_dsi_pdata)
target_type = mipi_dsi_pdata->target_type;
mipi_dsi_phy_init(0, &(mfd->panel_info), target_type);
mipi_dsi_clk_enable();
MIPI_OUTP(MIPI_DSI_BASE + 0x114, 1);
MIPI_OUTP(MIPI_DSI_BASE + 0x114, 0);
hbp = var->left_margin;
hfp = var->right_margin;
vbp = var->upper_margin;
vfp = var->lower_margin;
hspw = var->hsync_len;
vspw = var->vsync_len;
width = mfd->panel_info.xres;
height = mfd->panel_info.yres;
mipi = &mfd->panel_info.mipi;
if (mfd->panel_info.type == MIPI_VIDEO_PANEL) {
dummy_xres = mfd->panel_info.lcdc.xres_pad;
dummy_yres = mfd->panel_info.lcdc.yres_pad;
if (mdp_rev >= MDP_REV_41) {
MIPI_OUTP(MIPI_DSI_BASE + 0x20,
((hspw + hbp + width + dummy_xres) << 16 |
(hspw + hbp)));
MIPI_OUTP(MIPI_DSI_BASE + 0x24,
((vspw + vbp + height + dummy_yres) << 16 |
(vspw + vbp)));
MIPI_OUTP(MIPI_DSI_BASE + 0x28,
(vspw + vbp + height + dummy_yres +
vfp - 1) << 16 | (hspw + hbp +
width + dummy_xres + hfp - 1));
} else {
/* DSI_LAN_SWAP_CTRL */
MIPI_OUTP(MIPI_DSI_BASE + 0x00ac, mipi->dlane_swap);
MIPI_OUTP(MIPI_DSI_BASE + 0x20,
((hbp + width + dummy_xres) << 16 | (hbp)));
MIPI_OUTP(MIPI_DSI_BASE + 0x24,
((vbp + height + dummy_yres) << 16 | (vbp)));
MIPI_OUTP(MIPI_DSI_BASE + 0x28,
(vbp + height + dummy_yres + vfp) << 16 |
(hbp + width + dummy_xres + hfp));
}
MIPI_OUTP(MIPI_DSI_BASE + 0x2c, (hspw << 16));
MIPI_OUTP(MIPI_DSI_BASE + 0x30, 0);
MIPI_OUTP(MIPI_DSI_BASE + 0x34, (vspw << 16));
} else { /* command mode */
if (mipi->dst_format == DSI_CMD_DST_FORMAT_RGB888)
bpp = 3;
else if (mipi->dst_format == DSI_CMD_DST_FORMAT_RGB666)
bpp = 3;
else if (mipi->dst_format == DSI_CMD_DST_FORMAT_RGB565)
bpp = 2;
else
bpp = 3; /* Default format set to RGB888 */
ystride = width * bpp + 1;
/* DSI_COMMAND_MODE_MDP_STREAM_CTRL */
data = (ystride << 16) | (mipi->vc << 8) | DTYPE_DCS_LWRITE;
MIPI_OUTP(MIPI_DSI_BASE + 0x5c, data);
MIPI_OUTP(MIPI_DSI_BASE + 0x54, data);
/* DSI_COMMAND_MODE_MDP_STREAM_TOTAL */
data = height << 16 | width;
MIPI_OUTP(MIPI_DSI_BASE + 0x60, data);
MIPI_OUTP(MIPI_DSI_BASE + 0x58, data);
}
mipi_dsi_host_init(mipi);
if (mipi->force_clk_lane_hs) {
u32 tmp;
tmp = MIPI_INP(MIPI_DSI_BASE + 0xA8);
tmp |= (1<<28);
MIPI_OUTP(MIPI_DSI_BASE + 0xA8, tmp);
wmb();
}
if (mdp_rev >= MDP_REV_41)
mutex_lock(&mfd->dma->ov_mutex);
else
down(&mfd->dma->mutex);
ret = panel_next_on(pdev);
mipi_dsi_op_mode_config(mipi->mode);
if (mfd->panel_info.type == MIPI_CMD_PANEL) {
if (pinfo->lcd.vsync_enable) {
if (pinfo->lcd.hw_vsync_mode && vsync_gpio >= 0) {
if (mdp_rev >= MDP_REV_41) {
if (gpio_request(vsync_gpio,
"MDP_VSYNC") == 0)
gpio_direction_input(
vsync_gpio);
else
pr_err("%s: unable to \
request gpio=%d\n",
__func__, vsync_gpio);
} else if (mdp_rev == MDP_REV_303) {
if (!tlmm_settings && gpio_request(
vsync_gpio, "MDP_VSYNC") == 0) {
ret = gpio_tlmm_config(
GPIO_CFG(
vsync_gpio, 1,
GPIO_CFG_INPUT,
GPIO_CFG_PULL_DOWN,
GPIO_CFG_2MA),
GPIO_CFG_ENABLE);
if (ret) {
pr_err(
"%s: unable to config \
tlmm = %d\n",
__func__, vsync_gpio);
}
tlmm_settings = TRUE;
gpio_direction_input(
vsync_gpio);
} else {
if (!tlmm_settings) {
pr_err(
"%s: unable to request \
gpio=%d\n",
__func__, vsync_gpio);
}
}
}
}
mipi_dsi_set_tear_on(mfd);
}
mipi_dsi_clk_disable();
mipi_dsi_ahb_ctrl(0);
mipi_dsi_unprepare_clocks();
}
if (mdp_rev >= MDP_REV_41)
mutex_unlock(&mfd->dma->ov_mutex);
else
up(&mfd->dma->mutex);
pr_debug("%s-:\n", __func__);
return ret;
}
static int mipi_dsi_late_init(struct platform_device *pdev)
{
return panel_next_late_init(pdev);
}
static int mipi_dsi_resource_initialized;
static int mipi_dsi_probe(struct platform_device *pdev)
{
struct msm_fb_data_type *mfd;
struct fb_info *fbi;
struct msm_panel_info *pinfo;
struct mipi_panel_info *mipi;
struct platform_device *mdp_dev = NULL;
struct msm_fb_panel_data *pdata = NULL;
int rc;
uint8 lanes = 0, bpp;
uint32 h_period, v_period, dsi_pclk_rate;
resource_size_t size ;
if ((pdev->id == 1) && (pdev->num_resources >= 0)) {
mipi_dsi_pdata = pdev->dev.platform_data;
size = resource_size(&pdev->resource[0]);
mipi_dsi_base = ioremap(pdev->resource[0].start, size);
MSM_FB_INFO("mipi_dsi base phy_addr = 0x%x virt = 0x%x\n",
pdev->resource[0].start, (int) mipi_dsi_base);
if (!mipi_dsi_base)
return -ENOMEM;
if (mdp_rev >= MDP_REV_41) {
mmss_sfpb_base = ioremap(MMSS_SFPB_BASE_PHY, 0x100);
MSM_FB_INFO("mmss_sfpb base phy_addr = 0x%x,"
"virt = 0x%x\n", MMSS_SFPB_BASE_PHY,
(int) mmss_sfpb_base);
if (!mmss_sfpb_base)
return -ENOMEM;
}
dsi_irq = platform_get_irq(pdev, 0);
if (dsi_irq < 0) {
pr_err("mipi_dsi: can not get mdp irq\n");
return -ENOMEM;
}
rc = request_irq(dsi_irq, mipi_dsi_isr, IRQF_DISABLED,
"MIPI_DSI", 0);
if (rc) {
pr_err("mipi_dsi_host request_irq() failed!\n");
return rc;
}
disable_irq(dsi_irq);
if (mdp_rev == MDP_REV_42 && mipi_dsi_pdata &&
mipi_dsi_pdata->target_type == 1) {
/* Target type is 1 for device with (De)serializer
* 0x4f00000 is the base for TV Encoder.
* Unused Offset 0x1000 is used for
* (de)serializer on emulation platform
*/
periph_base = ioremap(MMSS_SERDES_BASE_PHY, 0x100);
if (periph_base) {
pr_debug("periph_base %p\n", periph_base);
writel(0x4, periph_base + 0x28);
writel(0xc, periph_base + 0x28);
} else {
pr_err("periph_base is NULL\n");
free_irq(dsi_irq, 0);
return -ENOMEM;
}
}
if (mipi_dsi_pdata) {
vsync_gpio = mipi_dsi_pdata->vsync_gpio;
pr_debug("%s: vsync_gpio=%d\n", __func__, vsync_gpio);
if (mdp_rev == MDP_REV_303 &&
mipi_dsi_pdata->dsi_client_reset) {
if (mipi_dsi_pdata->dsi_client_reset())
pr_err("%s: DSI Client Reset failed!\n",
__func__);
else
pr_debug("%s: DSI Client Reset success\n",
__func__);
}
}
if (mipi_dsi_clk_init(pdev))
return -EPERM;
if (mipi_dsi_pdata->splash_is_enabled &&
!mipi_dsi_pdata->splash_is_enabled()) {
mipi_dsi_ahb_ctrl(1);
MIPI_OUTP(MIPI_DSI_BASE + 0x118, 0);
MIPI_OUTP(MIPI_DSI_BASE + 0x0, 0);
MIPI_OUTP(MIPI_DSI_BASE + 0x200, 0);
mipi_dsi_ahb_ctrl(0);
}
mipi_dsi_resource_initialized = 1;
return 0;
}
if (!mipi_dsi_resource_initialized)
return -EPERM;
mfd = platform_get_drvdata(pdev);
if (!mfd)
return -ENODEV;
if (mfd->key != MFD_KEY)
return -EINVAL;
if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
return -ENOMEM;
mdp_dev = platform_device_alloc("mdp", pdev->id);
if (!mdp_dev)
return -ENOMEM;
/*
* link to the latest pdev
*/
mfd->pdev = mdp_dev;
/*
* alloc panel device data
*/
if (platform_device_add_data
(mdp_dev, pdev->dev.platform_data,
sizeof(struct msm_fb_panel_data))) {
pr_err("mipi_dsi_probe: platform_device_add_data failed!\n");
platform_device_put(mdp_dev);
return -ENOMEM;
}
/*
* data chain
*/
pdata = mdp_dev->dev.platform_data;
pdata->on = mipi_dsi_on;
pdata->off = mipi_dsi_off;
pdata->late_init = mipi_dsi_late_init;
pdata->next = pdev;
/*
* get/set panel specific fb info
*/
mfd->panel_info = pdata->panel_info;
pinfo = &mfd->panel_info;
if (mfd->panel_info.type == MIPI_VIDEO_PANEL)
mfd->dest = DISPLAY_LCDC;
else
mfd->dest = DISPLAY_LCD;
if (mdp_rev == MDP_REV_303 &&
mipi_dsi_pdata->get_lane_config) {
if (mipi_dsi_pdata->get_lane_config() != 2) {
pr_info("Changing to DSI Single Mode Configuration\n");
#ifdef CONFIG_FB_MSM_MDP303
update_lane_config(pinfo);
#endif
}
}
if (mfd->index == 0)
mfd->fb_imgType = MSMFB_DEFAULT_TYPE;
else
mfd->fb_imgType = MDP_RGB_565;
fbi = mfd->fbi;
fbi->var.pixclock = mfd->panel_info.clk_rate;
fbi->var.left_margin = mfd->panel_info.lcdc.h_back_porch;
fbi->var.right_margin = mfd->panel_info.lcdc.h_front_porch;
fbi->var.upper_margin = mfd->panel_info.lcdc.v_back_porch;
fbi->var.lower_margin = mfd->panel_info.lcdc.v_front_porch;
fbi->var.hsync_len = mfd->panel_info.lcdc.h_pulse_width;
fbi->var.vsync_len = mfd->panel_info.lcdc.v_pulse_width;
h_period = ((mfd->panel_info.lcdc.h_pulse_width)
+ (mfd->panel_info.lcdc.h_back_porch)
+ (mfd->panel_info.xres)
+ (mfd->panel_info.lcdc.h_front_porch));
v_period = ((mfd->panel_info.lcdc.v_pulse_width)
+ (mfd->panel_info.lcdc.v_back_porch)
+ (mfd->panel_info.yres)
+ (mfd->panel_info.lcdc.v_front_porch));
mipi = &mfd->panel_info.mipi;
if (mipi->data_lane3)
lanes += 1;
if (mipi->data_lane2)
lanes += 1;
if (mipi->data_lane1)
lanes += 1;
if (mipi->data_lane0)
lanes += 1;
if ((mipi->dst_format == DSI_CMD_DST_FORMAT_RGB888)
|| (mipi->dst_format == DSI_VIDEO_DST_FORMAT_RGB888)
|| (mipi->dst_format == DSI_VIDEO_DST_FORMAT_RGB666_LOOSE))
bpp = 3;
else if ((mipi->dst_format == DSI_CMD_DST_FORMAT_RGB565)
|| (mipi->dst_format == DSI_VIDEO_DST_FORMAT_RGB565))
bpp = 2;
else
bpp = 3; /* Default format set to RGB888 */
if (mfd->panel_info.type == MIPI_VIDEO_PANEL &&
!mfd->panel_info.clk_rate) {
h_period += mfd->panel_info.lcdc.xres_pad;
v_period += mfd->panel_info.lcdc.yres_pad;
if (lanes > 0) {
mfd->panel_info.clk_rate =
((h_period * v_period * (mipi->frame_rate) * bpp * 8)
/ lanes);
} else {
pr_err("%s: forcing mipi_dsi lanes to 1\n", __func__);
mfd->panel_info.clk_rate =
(h_period * v_period
* (mipi->frame_rate) * bpp * 8);
}
}
pll_divider_config.clk_rate = mfd->panel_info.clk_rate;
rc = mipi_dsi_clk_div_config(bpp, lanes, &dsi_pclk_rate);
if (rc)
goto mipi_dsi_probe_err;
if ((dsi_pclk_rate < 3300000) || (dsi_pclk_rate > 223000000)) {
pr_err("%s: Pixel clock not supported\n", __func__);
dsi_pclk_rate = 35000000;
}
mipi->dsi_pclk_rate = dsi_pclk_rate;
/*
* set driver data
*/
platform_set_drvdata(mdp_dev, mfd);
/*
* register in mdp driver
*/
rc = platform_device_add(mdp_dev);
if (rc)
goto mipi_dsi_probe_err;
pdev_list[pdev_list_cnt++] = pdev;
if (!mfd->cont_splash_done)
cont_splash_clk_ctrl(1);
return 0;
mipi_dsi_probe_err:
platform_device_put(mdp_dev);
return rc;
}
static int mipi_dsi_remove(struct platform_device *pdev)
{
struct msm_fb_data_type *mfd;
mfd = platform_get_drvdata(pdev);
iounmap(mipi_dsi_base);
return 0;
}
static int mipi_dsi_register_driver(void)
{
return platform_driver_register(&mipi_dsi_driver);
}
static int __init mipi_dsi_driver_init(void)
{
int ret;
mipi_dsi_init();
ret = mipi_dsi_register_driver();
device_initialize(&dsi_dev);
if (ret) {
pr_err("mipi_dsi_register_driver() failed!\n");
return ret;
}
return ret;
}
module_init(mipi_dsi_driver_init);