diff options
| -rw-r--r-- | drivers/video/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/video/Makefile | 2 | ||||
| -rw-r--r-- | drivers/video/exynos/Kconfig | 22 | ||||
| -rw-r--r-- | drivers/video/exynos/Makefile | 6 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_mipi_dsi.c | 600 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_mipi_dsi_common.c | 896 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_mipi_dsi_common.h | 46 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_mipi_dsi_lowlevel.c | 618 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_mipi_dsi_lowlevel.h | 112 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_mipi_dsi_regs.h | 149 | ||||
| -rw-r--r-- | include/video/exynos_mipi_dsim.h | 359 |
11 files changed, 2811 insertions, 1 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 6ca0c407c144..e61d7ce35595 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -2411,7 +2411,7 @@ config FB_PUV3_UNIGFX source "drivers/video/omap/Kconfig" source "drivers/video/omap2/Kconfig" - +source "drivers/video/exynos/Kconfig" source "drivers/video/backlight/Kconfig" if VT diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 142606814d98..274b04ebedec 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -15,6 +15,8 @@ obj-$(CONFIG_VT) += console/ obj-$(CONFIG_LOGO) += logo/ obj-y += backlight/ +obj-$(CONFIG_EXYNOS_VIDEO) += exynos/ + obj-$(CONFIG_FB_CFB_FILLRECT) += cfbfillrect.o obj-$(CONFIG_FB_CFB_COPYAREA) += cfbcopyarea.o obj-$(CONFIG_FB_CFB_IMAGEBLIT) += cfbimgblt.o diff --git a/drivers/video/exynos/Kconfig b/drivers/video/exynos/Kconfig new file mode 100644 index 000000000000..645b8a597199 --- /dev/null +++ b/drivers/video/exynos/Kconfig @@ -0,0 +1,22 @@ +# +# Exynos Video configuration +# + +menuconfig EXYNOS_VIDEO + bool "Exynos Video driver support" + help + This enables support for EXYNOS Video device. + +if EXYNOS_VIDEO + +# +# MIPI DSI driver +# + +config EXYNOS_MIPI_DSI + bool "EXYNOS MIPI DSI driver support." + depends on (ARCH_S5PV210 || ARCH_EXYNOS) + help + This enables support for MIPI-DSI device. + +endif # EXYNOS_VIDEO diff --git a/drivers/video/exynos/Makefile b/drivers/video/exynos/Makefile new file mode 100644 index 000000000000..a1ae82abd6b8 --- /dev/null +++ b/drivers/video/exynos/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the exynos video drivers. +# + +obj-$(CONFIG_EXYNOS_MIPI_DSI) += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \ + exynos_mipi_dsi_lowlevel.o diff --git a/drivers/video/exynos/exynos_mipi_dsi.c b/drivers/video/exynos/exynos_mipi_dsi.c new file mode 100644 index 000000000000..557091dc0e97 --- /dev/null +++ b/drivers/video/exynos/exynos_mipi_dsi.c @@ -0,0 +1,600 @@ +/* linux/drivers/video/exynos/exynos_mipi_dsi.c + * + * Samsung SoC MIPI-DSIM 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/clk.h> +#include <linux/mutex.h> +#include <linux/wait.h> +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/ctype.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/memory.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/kthread.h> +#include <linux/notifier.h> +#include <linux/regulator/consumer.h> +#include <linux/pm_runtime.h> + +#include <video/exynos_mipi_dsim.h> + +#include <plat/fb.h> + +#include "exynos_mipi_dsi_common.h" +#include "exynos_mipi_dsi_lowlevel.h" + +struct mipi_dsim_ddi { + int bus_id; + struct list_head list; + struct mipi_dsim_lcd_device *dsim_lcd_dev; + struct mipi_dsim_lcd_driver *dsim_lcd_drv; +}; + +static LIST_HEAD(dsim_ddi_list); + +static DEFINE_MUTEX(mipi_dsim_lock); + +static struct mipi_dsim_platform_data *to_dsim_plat(struct platform_device + *pdev) +{ + return pdev->dev.platform_data; +} + +static struct regulator_bulk_data supplies[] = { + { .supply = "vdd10", }, + { .supply = "vdd18", }, +}; + +static int exynos_mipi_regulator_enable(struct mipi_dsim_device *dsim) +{ + int ret; + + mutex_lock(&dsim->lock); + ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies); + mutex_unlock(&dsim->lock); + + return ret; +} + +static int exynos_mipi_regulator_disable(struct mipi_dsim_device *dsim) +{ + int ret; + + mutex_lock(&dsim->lock); + ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies); + mutex_unlock(&dsim->lock); + + return ret; +} + +/* update all register settings to MIPI DSI controller. */ +static void exynos_mipi_update_cfg(struct mipi_dsim_device *dsim) +{ + /* + * data from Display controller(FIMD) is not transferred in video mode + * but in case of command mode, all settings is not updated to + * registers. + */ + exynos_mipi_dsi_stand_by(dsim, 0); + + exynos_mipi_dsi_init_dsim(dsim); + exynos_mipi_dsi_init_link(dsim); + + exynos_mipi_dsi_set_hs_enable(dsim); + + /* set display timing. */ + exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config); + + /* + * data from Display controller(FIMD) is transferred in video mode + * but in case of command mode, all settigs is updated to registers. + */ + exynos_mipi_dsi_stand_by(dsim, 1); +} + +static int exynos_mipi_dsi_early_blank_mode(struct mipi_dsim_device *dsim, + int power) +{ + struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv; + struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev; + + switch (power) { + case FB_BLANK_POWERDOWN: + if (dsim->suspended) + return 0; + + if (client_drv && client_drv->suspend) + client_drv->suspend(client_dev); + + clk_disable(dsim->clock); + + exynos_mipi_regulator_disable(dsim); + + dsim->suspended = true; + + break; + default: + break; + } + + return 0; +} + +static int exynos_mipi_dsi_blank_mode(struct mipi_dsim_device *dsim, int power) +{ + struct platform_device *pdev = to_platform_device(dsim->dev); + struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv; + struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev; + + switch (power) { + case FB_BLANK_UNBLANK: + if (!dsim->suspended) + return 0; + + /* lcd panel power on. */ + if (client_drv && client_drv->power_on) + client_drv->power_on(client_dev, 1); + + exynos_mipi_regulator_disable(dsim); + + /* enable MIPI-DSI PHY. */ + if (dsim->pd->phy_enable) + dsim->pd->phy_enable(pdev, true); + + clk_enable(dsim->clock); + + exynos_mipi_update_cfg(dsim); + + /* set lcd panel sequence commands. */ + if (client_drv && client_drv->set_sequence) + client_drv->set_sequence(client_dev); + + dsim->suspended = false; + + break; + case FB_BLANK_NORMAL: + /* TODO. */ + break; + default: + break; + } + + return 0; +} + +int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev) +{ + struct mipi_dsim_ddi *dsim_ddi; + + if (!lcd_dev->name) { + pr_err("dsim_lcd_device name is NULL.\n"); + return -EFAULT; + } + + dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL); + if (!dsim_ddi) { + pr_err("failed to allocate dsim_ddi object.\n"); + return -ENOMEM; + } + + dsim_ddi->dsim_lcd_dev = lcd_dev; + + mutex_lock(&mipi_dsim_lock); + list_add_tail(&dsim_ddi->list, &dsim_ddi_list); + mutex_unlock(&mipi_dsim_lock); + + return 0; +} + +struct mipi_dsim_ddi *exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv) +{ + struct mipi_dsim_ddi *dsim_ddi, *next; + struct mipi_dsim_lcd_device *lcd_dev; + + mutex_lock(&mipi_dsim_lock); + + list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) { + if (!dsim_ddi) + goto out; + + lcd_dev = dsim_ddi->dsim_lcd_dev; + if (!lcd_dev) + continue; + + if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) { + /** + * bus_id would be used to identify + * connected bus. + */ + dsim_ddi->bus_id = lcd_dev->bus_id; + mutex_unlock(&mipi_dsim_lock); + + return dsim_ddi; + } + + list_del(&dsim_ddi->list); + kfree(dsim_ddi); + } + +out: + mutex_unlock(&mipi_dsim_lock); + + return NULL; +} + +int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv) +{ + struct mipi_dsim_ddi *dsim_ddi; + + if (!lcd_drv->name) { + pr_err("dsim_lcd_driver name is NULL.\n"); + return -EFAULT; + } + + dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv); + if (!dsim_ddi) { + pr_err("mipi_dsim_ddi object not found.\n"); + return -EFAULT; + } + + dsim_ddi->dsim_lcd_drv = lcd_drv; + + pr_info("registered panel driver(%s) to mipi-dsi driver.\n", + lcd_drv->name); + + return 0; + +} + +struct mipi_dsim_ddi *exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim, + const char *name) +{ + struct mipi_dsim_ddi *dsim_ddi, *next; + struct mipi_dsim_lcd_driver *lcd_drv; + struct mipi_dsim_lcd_device *lcd_dev; + int ret; + + mutex_lock(&dsim->lock); + + list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) { + lcd_drv = dsim_ddi->dsim_lcd_drv; + lcd_dev = dsim_ddi->dsim_lcd_dev; + if (!lcd_drv || !lcd_dev || + (dsim->id != dsim_ddi->bus_id)) + continue; + + dev_dbg(dsim->dev, "lcd_drv->id = %d, lcd_dev->id = %d\n", + lcd_drv->id, lcd_dev->id); + dev_dbg(dsim->dev, "lcd_dev->bus_id = %d, dsim->id = %d\n", + lcd_dev->bus_id, dsim->id); + + if ((strcmp(lcd_drv->name, name) == 0)) { + lcd_dev->master = dsim; + + lcd_dev->dev.parent = dsim->dev; + dev_set_name(&lcd_dev->dev, "%s", lcd_drv->name); + + ret = device_register(&lcd_dev->dev); + if (ret < 0) { + dev_err(dsim->dev, + "can't register %s, status %d\n", + dev_name(&lcd_dev->dev), ret); + mutex_unlock(&dsim->lock); + + return NULL; + } + + dsim->dsim_lcd_dev = lcd_dev; + dsim->dsim_lcd_drv = lcd_drv; + + mutex_unlock(&dsim->lock); + + return dsim_ddi; + } + } + + mutex_unlock(&dsim->lock); + + return NULL; +} + +/* define MIPI-DSI Master operations. */ +static struct mipi_dsim_master_ops master_ops = { + .cmd_read = exynos_mipi_dsi_rd_data, + .cmd_write = exynos_mipi_dsi_wr_data, + .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status, + .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done, + .set_early_blank_mode = exynos_mipi_dsi_early_blank_mode, + .set_blank_mode = exynos_mipi_dsi_blank_mode, +}; + +static int exynos_mipi_dsi_probe(struct platform_device *pdev) +{ + struct resource *res; + struct mipi_dsim_device *dsim; + struct mipi_dsim_config *dsim_config; + struct mipi_dsim_platform_data *dsim_pd; + struct mipi_dsim_ddi *dsim_ddi; + int ret = -EINVAL; + + dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL); + if (!dsim) { + dev_err(&pdev->dev, "failed to allocate dsim object.\n"); + return -ENOMEM; + } + + dsim->pd = to_dsim_plat(pdev); + dsim->dev = &pdev->dev; + dsim->id = pdev->id; + + /* get mipi_dsim_platform_data. */ + dsim_pd = (struct mipi_dsim_platform_data *)dsim->pd; + if (dsim_pd == NULL) { + dev_err(&pdev->dev, "failed to get platform data for dsim.\n"); + goto err_clock_get; + } + /* get mipi_dsim_config. */ + dsim_config = dsim_pd->dsim_config; + if (dsim_config == NULL) { + dev_err(&pdev->dev, "failed to get dsim config data.\n"); + goto err_clock_get; + } + + dsim->dsim_config = dsim_config; + dsim->master_ops = &master_ops; + + mutex_init(&dsim->lock); + + ret = regulator_bulk_get(&pdev->dev, ARRAY_SIZE(supplies), supplies); + if (ret) { + dev_err(&pdev->dev, "Failed to get regulators: %d\n", ret); + goto err_clock_get; + } + + dsim->clock = clk_get(&pdev->dev, "dsim0"); + if (IS_ERR(dsim->clock)) { + dev_err(&pdev->dev, "failed to get dsim clock source\n"); + goto err_clock_get; + } + + clk_enable(dsim->clock); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "failed to get io memory region\n"); + goto err_platform_get; + } + + dsim->res = request_mem_region(res->start, resource_size(res), + dev_name(&pdev->dev)); + if (!dsim->res) { + dev_err(&pdev->dev, "failed to request io memory region\n"); + ret = -ENOMEM; + goto err_mem_region; + } + + dsim->reg_base = ioremap(res->start, resource_size(res)); + if (!dsim->reg_base) { + dev_err(&pdev->dev, "failed to remap io region\n"); + ret = -ENOMEM; + goto err_ioremap; + } + + mutex_init(&dsim->lock); + + /* bind lcd ddi matched with panel name. */ + dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name); + if (!dsim_ddi) { + dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n"); + goto err_bind; + } + + dsim->irq = platform_get_irq(pdev, 0); + if (dsim->irq < 0) { + dev_err(&pdev->dev, "failed to request dsim irq resource\n"); + ret = -EINVAL; + goto err_platform_get_irq; + } + + ret = request_irq(dsim->irq, exynos_mipi_dsi_interrupt_handler, + IRQF_SHARED, pdev->name, dsim); + if (ret != 0) { + dev_err(&pdev->dev, "failed to request dsim irq\n"); + ret = -EINVAL; + goto err_bind; + } + + init_completion(&dsim_wr_comp); + init_completion(&dsim_rd_comp); + + /* enable interrupt */ + exynos_mipi_dsi_init_interrupt(dsim); + + /* initialize mipi-dsi client(lcd panel). */ + if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->probe) + dsim_ddi->dsim_lcd_drv->probe(dsim_ddi->dsim_lcd_dev); + + /* in case that mipi got enabled at bootloader. */ + if (dsim_pd->enabled) + goto out; + + /* lcd panel power on. */ + if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->power_on) + dsim_ddi->dsim_lcd_drv->power_on(dsim_ddi->dsim_lcd_dev, 1); + + exynos_mipi_regulator_enable(dsim); + + /* enable MIPI-DSI PHY. */ + if (dsim->pd->phy_enable) + dsim->pd->phy_enable(pdev, true); + + exynos_mipi_update_cfg(dsim); + + /* set lcd panel sequence commands. */ + if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->set_sequence) + dsim_ddi->dsim_lcd_drv->set_sequence(dsim_ddi->dsim_lcd_dev); + + dsim->suspended = false; + +out: + platform_set_drvdata(pdev, dsim); + + dev_dbg(&pdev->dev, "mipi-dsi driver(%s mode) has been probed.\n", + (dsim_config->e_interface == DSIM_COMMAND) ? + "CPU" : "RGB"); + + return 0; + +err_bind: + iounmap(dsim->reg_base); + +err_ioremap: + release_mem_region(dsim->res->start, resource_size(dsim->res)); + +err_mem_region: + release_resource(dsim->res); + +err_platform_get: + clk_disable(dsim->clock); + clk_put(dsim->clock); +err_clock_get: + kfree(dsim); + +err_platform_get_irq: + return ret; +} + +static int __devexit exynos_mipi_dsi_remove(struct platform_device *pdev) +{ + struct mipi_dsim_device *dsim = platform_get_drvdata(pdev); + struct mipi_dsim_ddi *dsim_ddi, *next; + struct mipi_dsim_lcd_driver *dsim_lcd_drv; + + iounmap(dsim->reg_base); + + clk_disable(dsim->clock); + clk_put(dsim->clock); + + release_resource(dsim->res); + release_mem_region(dsim->res->start, resource_size(dsim->res)); + + list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) { + if (dsim_ddi) { + if (dsim->id != dsim_ddi->bus_id) + continue; + + dsim_lcd_drv = dsim_ddi->dsim_lcd_drv; + + if (dsim_lcd_drv->remove) + dsim_lcd_drv->remove(dsim_ddi->dsim_lcd_dev); + + kfree(dsim_ddi); + } + } + + regulator_bulk_free(ARRAY_SIZE(supplies), supplies); + kfree(dsim); + + return 0; +} + +#ifdef CONFIG_PM +static int exynos_mipi_dsi_suspend(struct platform_device *pdev, + pm_message_t state) +{ + struct mipi_dsim_device *dsim = platform_get_drvdata(pdev); + struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv; + struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev; + + disable_irq(dsim->irq); + + if (dsim->suspended) + return 0; + + if (client_drv && client_drv->suspend) + client_drv->suspend(client_dev); + + /* enable MIPI-DSI PHY. */ + if (dsim->pd->phy_enable) + dsim->pd->phy_enable(pdev, false); + + clk_disable(dsim->clock); + + exynos_mipi_regulator_disable(dsim); + + dsim->suspended = true; + + return 0; +} + +static int exynos_mipi_dsi_resume(struct platform_device *pdev) +{ + struct mipi_dsim_device *dsim = platform_get_drvdata(pdev); + struct mipi_dsim_lcd_driver *client_drv = dsim->dsim_lcd_drv; + struct mipi_dsim_lcd_device *client_dev = dsim->dsim_lcd_dev; + + enable_irq(dsim->irq); + + if (!dsim->suspended) + return 0; + + /* lcd panel power on. */ + if (client_drv && client_drv->power_on) + client_drv->power_on(client_dev, 1); + + exynos_mipi_regulator_enable(dsim); + + /* enable MIPI-DSI PHY. */ + if (dsim->pd->phy_enable) + dsim->pd->phy_enable(pdev, true); + + clk_enable(dsim->clock); + + exynos_mipi_update_cfg(dsim); + + /* set lcd panel sequence commands. */ + if (client_drv && client_drv->set_sequence) + client_drv->set_sequence(client_dev); + + dsim->suspended = false; + + return 0; +} +#else +#define exynos_mipi_dsi_suspend NULL +#define exynos_mipi_dsi_resume NULL +#endif + +static struct platform_driver exynos_mipi_dsi_driver = { + .probe = exynos_mipi_dsi_probe, + .remove = __devexit_p(exynos_mipi_dsi_remove), + .suspend = exynos_mipi_dsi_suspend, + .resume = exynos_mipi_dsi_resume, + .driver = { + .name = "exynos-mipi-dsim", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(exynos_mipi_dsi_driver); + +MODULE_AUTHOR("InKi Dae <inki.dae@samsung.com>"); +MODULE_DESCRIPTION("Samusung SoC MIPI-DSI driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/exynos/exynos_mipi_dsi_common.c b/drivers/video/exynos/exynos_mipi_dsi_common.c new file mode 100644 index 000000000000..14909c1d3832 --- /dev/null +++ b/drivers/video/exynos/exynos_mipi_dsi_common.c @@ -0,0 +1,896 @@ +/* linux/drivers/video/exynos/exynos_mipi_dsi_common.c + * + * Samsung SoC MIPI-DSI common 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/fs.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/ctype.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/memory.h> +#include <linux/delay.h> +#include <linux/kthread.h> + +#include <video/mipi_display.h> +#include <video/exynos_mipi_dsim.h> + +#include <mach/map.h> + +#include "exynos_mipi_dsi_regs.h" +#include "exynos_mipi_dsi_lowlevel.h" +#include "exynos_mipi_dsi_common.h" + +#define MIPI_FIFO_TIMEOUT msecs_to_jiffies(250) +#define MIPI_RX_FIFO_READ_DONE 0x30800002 +#define MIPI_MAX_RX_FIFO 20 +#define MHZ (1000 * 1000) +#define FIN_HZ (24 * MHZ) + +#define DFIN_PLL_MIN_HZ (6 * MHZ) +#define DFIN_PLL_MAX_HZ (12 * MHZ) + +#define DFVCO_MIN_HZ (500 * MHZ) +#define DFVCO_MAX_HZ (1000 * MHZ) + +#define TRY_GET_FIFO_TIMEOUT (5000 * 2) +#define TRY_FIFO_CLEAR (10) + +/* MIPI-DSIM status types. */ +enum { + DSIM_STATE_INIT, /* should be initialized. */ + DSIM_STATE_STOP, /* CPU and LCDC are LP mode. */ + DSIM_STATE_HSCLKEN, /* HS clock was enabled. */ + DSIM_STATE_ULPS +}; + +/* define DSI lane types. */ +enum { + DSIM_LANE_CLOCK = (1 << 0), + DSIM_LANE_DATA0 = (1 << 1), + DSIM_LANE_DATA1 = (1 << 2), + DSIM_LANE_DATA2 = (1 << 3), + DSIM_LANE_DATA3 = (1 << 4) +}; + +static unsigned int dpll_table[15] = { + 100, 120, 170, 220, 270, + 320, 390, 450, 510, 560, + 640, 690, 770, 870, 950 +}; + +irqreturn_t exynos_mipi_dsi_interrupt_handler(int irq, void *dev_id) +{ + unsigned int intsrc = 0; + unsigned int intmsk = 0; + struct mipi_dsim_device *dsim = NULL; + + dsim = dev_id; + if (!dsim) { + dev_dbg(dsim->dev, KERN_ERR "%s:error: wrong parameter\n", + __func__); + return IRQ_HANDLED; + } + + intsrc = exynos_mipi_dsi_read_interrupt(dsim); + intmsk = exynos_mipi_dsi_read_interrupt_mask(dsim); + + intmsk = ~(intmsk) & intsrc; + + switch (intmsk) { + case INTMSK_RX_DONE: + complete(&dsim_rd_comp); + dev_dbg(dsim->dev, "MIPI INTMSK_RX_DONE\n"); + break; + case INTMSK_FIFO_EMPTY: + complete(&dsim_wr_comp); + dev_dbg(dsim->dev, "MIPI INTMSK_FIFO_EMPTY\n"); + break; + default: + break; + } + + exynos_mipi_dsi_clear_interrupt(dsim, intmsk); + + return IRQ_HANDLED; +} + +/* + * write long packet to mipi dsi slave + * @dsim: mipi dsim device structure. + * @data0: packet data to send. + * @data1: size of packet data + */ +static void exynos_mipi_dsi_long_data_wr(struct mipi_dsim_device *dsim, + const unsigned char *data0, unsigned int data_size) +{ + unsigned int data_cnt = 0, payload = 0; + + /* in case that data count is more then 4 */ + for (data_cnt = 0; data_cnt < data_size; data_cnt += 4) { + /* + * after sending 4bytes per one time, + * send remainder data less then 4. + */ + if ((data_size - data_cnt) < 4) { + if ((data_size - data_cnt) == 3) { + payload = data0[data_cnt] | + data0[data_cnt + 1] << 8 | + data0[data_cnt + 2] << 16; + dev_dbg(dsim->dev, "count = 3 payload = %x, %x %x %x\n", + payload, data0[data_cnt], + data0[data_cnt + 1], + data0[data_cnt + 2]); + } else if ((data_size - data_cnt) == 2) { + payload = data0[data_cnt] | + data0[data_cnt + 1] << 8; + dev_dbg(dsim->dev, + "count = 2 payload = %x, %x %x\n", payload, + data0[data_cnt], + data0[data_cnt + 1]); + } else if ((data_size - data_cnt) == 1) { + payload = data0[data_cnt]; + } + + exynos_mipi_dsi_wr_tx_data(dsim, payload); + /* send 4bytes per one time. */ + } else { + payload = data0[data_cnt] | + data0[data_cnt + 1] << 8 | + data0[data_cnt + 2] << 16 | + data0[data_cnt + 3] << 24; + + dev_dbg(dsim->dev, + "count = 4 payload = %x, %x %x %x %x\n", + payload, *(u8 *)(data0 + data_cnt), + data0[data_cnt + 1], + data0[data_cnt + 2], + data0[data_cnt + 3]); + + exynos_mipi_dsi_wr_tx_data(dsim, payload); + } + } +} + +int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int data_id, + const unsigned char *data0, unsigned int data_size) +{ + unsigned int check_rx_ack = 0; + + if (dsim->state == DSIM_STATE_ULPS) { + dev_err(dsim->dev, "state is ULPS.\n"); + + return -EINVAL; + } + + /* FIXME!!! why does it need this delay? */ + msleep(20); + + mutex_lock(&dsim->lock); + + switch (data_id) { + /* short packet types of packet types for command. */ + case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM: + case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM: + case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM: + case MIPI_DSI_DCS_SHORT_WRITE: + case MIPI_DSI_DCS_SHORT_WRITE_PARAM: + case MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE: + exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]); + if (check_rx_ack) { + /* process response func should be implemented */ + mutex_unlock(&dsim->lock); + return 0; + } else { + mutex_unlock(&dsim->lock); + return -EINVAL; + } + + /* general command */ + case MIPI_DSI_COLOR_MODE_OFF: + case MIPI_DSI_COLOR_MODE_ON: + case MIPI_DSI_SHUTDOWN_PERIPHERAL: + case MIPI_DSI_TURN_ON_PERIPHERAL: + exynos_mipi_dsi_wr_tx_header(dsim, data_id, data0[0], data0[1]); + if (check_rx_ack) { + /* process response func should be implemented. */ + mutex_unlock(&dsim->lock); + return 0; + } else { + mutex_unlock(&dsim->lock); + return -EINVAL; + } + + /* packet types for video data */ + case MIPI_DSI_V_SYNC_START: + case MIPI_DSI_V_SYNC_END: + case MIPI_DSI_H_SYNC_START: + case MIPI_DSI_H_SYNC_END: + case MIPI_DSI_END_OF_TRANSMISSION: + mutex_unlock(&dsim->lock); + return 0; + + /* long packet type and null packet */ + case MIPI_DSI_NULL_PACKET: + case MIPI_DSI_BLANKING_PACKET: + mutex_unlock(&dsim->lock); + return 0; + case MIPI_DSI_GENERIC_LONG_WRITE: + case MIPI_DSI_DCS_LONG_WRITE: + { + unsigned int size, payload = 0; + INIT_COMPLETION(dsim_wr_comp); + + size = data_size * 4; + + /* if data count is less then 4, then send 3bytes data. */ + if (data_size < 4) { + payload = data0[0] | + data0[1] << 8 | + data0[2] << 16; + + exynos_mipi_dsi_wr_tx_data(dsim, payload); + + dev_dbg(dsim->dev, "count = %d payload = %x,%x %x %x\n", + data_size, payload, data0[0], + data0[1], data0[2]); + + /* in case that data count is more then 4 */ + } else + exynos_mipi_dsi_long_data_wr(dsim, data0, data_size); + + /* put data into header fifo */ + exynos_mipi_dsi_wr_tx_header(dsim, data_id, data_size & 0xff, + (data_size & 0xff00) >> 8); + + if (!wait_for_completion_interruptible_timeout(&dsim_wr_comp, + MIPI_FIFO_TIMEOUT)) { + dev_warn(dsim->dev, "command write timeout.\n"); + mutex_unlock(&dsim->lock); + return -EAGAIN; + } + + if (check_rx_ack) { + /* process response func should be implemented. */ + mutex_unlock(&dsim->lock); + return 0; + } else { + mutex_unlock(&dsim->lock); + return -EINVAL; + } + } + + /* packet typo for video data */ + case MIPI_DSI_PACKED_PIXEL_STREAM_16: + case MIPI_DSI_PACKED_PIXEL_STREAM_18: + case MIPI_DSI_PIXEL_STREAM_3BYTE_18: + case MIPI_DSI_PACKED_PIXEL_STREAM_24: + if (check_rx_ack) { + /* process response func should be implemented. */ + mutex_unlock(&dsim->lock); + return 0; + } else { + mutex_unlock(&dsim->lock); + return -EINVAL; + } + default: + dev_warn(dsim->dev, + "data id %x is not supported current DSI spec.\n", + data_id); + + mutex_unlock(&dsim->lock); + return -EINVAL; + } + + mutex_unlock(&dsim->lock); + return 0; +} + +static unsigned int exynos_mipi_dsi_long_data_rd(struct mipi_dsim_device *dsim, + unsigned int req_size, unsigned int rx_data, u8 *rx_buf) +{ + unsigned int rcv_pkt, i, j; + u16 rxsize; + + /* for long packet */ + rxsize = (u16)((rx_data & 0x00ffff00) >> 8); + dev_dbg(dsim->dev, "mipi dsi rx size : %d\n", rxsize); + if (rxsize != req_size) { + dev_dbg(dsim->dev, + "received size mismatch received: %d, requested: %d\n", + rxsize, req_size); + goto err; + } + + for (i = 0; i < (rxsize >> 2); i++) { + rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim); + dev_dbg(dsim->dev, "received pkt : %08x\n", rcv_pkt); + for (j = 0; j < 4; j++) { + rx_buf[(i * 4) + j] = + (u8)(rcv_pkt >> (j * 8)) & 0xff; + dev_dbg(dsim->dev, "received value : %02x\n", + (rcv_pkt >> (j * 8)) & 0xff); + } + } + if (rxsize % 4) { + rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim); + dev_dbg(dsim->dev, "received pkt : %08x\n", rcv_pkt); + for (j = 0; j < (rxsize % 4); j++) { + rx_buf[(i * 4) + j] = + (u8)(rcv_pkt >> (j * 8)) & 0xff; + dev_dbg(dsim->dev, "received value : %02x\n", + (rcv_pkt >> (j * 8)) & 0xff); + } + } + + return rxsize; + +err: + return -EINVAL; +} + +static unsigned int exynos_mipi_dsi_response_size(unsigned int req_size) +{ + switch (req_size) { + case 1: + return MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE; + case 2: + return MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE; + default: + return MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE; + } +} + +int exynos_mipi_dsi_rd_data(struct mipi_dsim_device *dsim, unsigned int data_id, + unsigned int data0, unsigned int req_size, u8 *rx_buf) +{ + unsigned int rx_data, rcv_pkt, i; + u8 response = 0; + u16 rxsize; + + if (dsim->state == DSIM_STATE_ULPS) { + dev_err(dsim->dev, "state is ULPS.\n"); + + return -EINVAL; + } + + /* FIXME!!! */ + msleep(20); + + mutex_lock(&dsim->lock); + INIT_COMPLETION(dsim_rd_comp); + exynos_mipi_dsi_rd_tx_header(dsim, + MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, req_size); + + response = exynos_mipi_dsi_response_size(req_size); + + switch (data_id) { + case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM: + case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM: + case MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM: + case MIPI_DSI_DCS_READ: + exynos_mipi_dsi_rd_tx_header(dsim, + data_id, data0); + /* process response func should be implemented. */ + break; + default: + dev_warn(dsim->dev, + "data id %x is not supported current DSI spec.\n", + data_id); + + return -EINVAL; + } + + if (!wait_for_completion_interruptible_timeout(&dsim_rd_comp, + MIPI_FIFO_TIMEOUT)) { + pr_err("RX done interrupt timeout\n"); + mutex_unlock(&dsim->lock); + return 0; + } + + msleep(20); + + rx_data = exynos_mipi_dsi_rd_rx_fifo(dsim); + + if ((u8)(rx_data & 0xff) != response) { + printk(KERN_ERR + "mipi dsi wrong response rx_data : %x, response:%x\n", + rx_data, response); + goto clear_rx_fifo; + } + + if (req_size <= 2) { + /* for short packet */ + for (i = 0; i < req_size; i++) + rx_buf[i] = (rx_data >> (8 + (i * 8))) & 0xff; + rxsize = req_size; + } else { + /* for long packet */ + rxsize = exynos_mipi_dsi_long_data_rd(dsim, req_size, rx_data, + rx_buf); + if (rxsize != req_size) + goto clear_rx_fifo; + } + + rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim); + + msleep(20); + + if (rcv_pkt != MIPI_RX_FIFO_READ_DONE) { + dev_info(dsim->dev, + "Can't found RX FIFO READ DONE FLAG : %x\n", rcv_pkt); + goto clear_rx_fifo; + } + + mutex_unlock(&dsim->lock); + + return rxsize; + +clear_rx_fifo: + i = 0; + while (1) { + rcv_pkt = exynos_mipi_dsi_rd_rx_fifo(dsim); + if ((rcv_pkt == MIPI_RX_FIFO_READ_DONE) + || (i > MIPI_MAX_RX_FIFO)) + break; + dev_dbg(dsim->dev, + "mipi dsi clear rx fifo : %08x\n", rcv_pkt); + i++; + } + dev_info(dsim->dev, + "mipi dsi rx done count : %d, rcv_pkt : %08x\n", i, rcv_pkt); + + mutex_unlock(&dsim->lock); + + return 0; +} + +static int exynos_mipi_dsi_pll_on(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + int sw_timeout; + + if (enable) { + sw_timeout = 1000; + + exynos_mipi_dsi_enable_pll(dsim, 1); + while (1) { + sw_timeout--; + if (exynos_mipi_dsi_is_pll_stable(dsim)) + return 0; + if (sw_timeout == 0) + return -EINVAL; + } + } else + exynos_mipi_dsi_enable_pll(dsim, 0); + + return 0; +} + +static unsigned long exynos_mipi_dsi_change_pll(struct mipi_dsim_device *dsim, + unsigned int pre_divider, unsigned int main_divider, + unsigned int scaler) +{ + unsigned long dfin_pll, dfvco, dpll_out; + unsigned int i, freq_band = 0xf; + + dfin_pll = (FIN_HZ / pre_divider); + + /****************************************************** + * Serial Clock(=ByteClk X 8) FreqBand[3:0] * + ****************************************************** + * ~ 99.99 MHz 0000 + * 100 ~ 119.99 MHz 0001 + * 120 ~ 159.99 MHz 0010 + * 160 ~ 199.99 MHz 0011 + * 200 ~ 239.99 MHz 0100 + * 140 ~ 319.99 MHz 0101 + * 320 ~ 389.99 MHz 0110 + * 390 ~ 449.99 MHz 0111 + * 450 ~ 509.99 MHz 1000 + * 510 ~ 559.99 MHz 1001 + * 560 ~ 639.99 MHz 1010 + * 640 ~ 689.99 MHz 1011 + * 690 ~ 769.99 MHz 1100 + * 770 ~ 869.99 MHz 1101 + * 870 ~ 949.99 MHz 1110 + * 950 ~ 1000 MHz 1111 + ******************************************************/ + if (dfin_pll < DFIN_PLL_MIN_HZ || dfin_pll > DFIN_PLL_MAX_HZ) { + dev_warn(dsim->dev, "fin_pll range should be 6MHz ~ 12MHz\n"); + exynos_mipi_dsi_enable_afc(dsim, 0, 0); + } else { + if (dfin_pll < 7 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x1); + else if (dfin_pll < 8 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x0); + else if (dfin_pll < 9 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x3); + else if (dfin_pll < 10 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x2); + else if (dfin_pll < 11 * MHZ) + exynos_mipi_dsi_enable_afc(dsim, 1, 0x5); + else + exynos_mipi_dsi_enable_afc(dsim, 1, 0x4); + } + + dfvco = dfin_pll * main_divider; + dev_dbg(dsim->dev, "dfvco = %lu, dfin_pll = %lu, main_divider = %d\n", + dfvco, dfin_pll, main_divider); + if (dfvco < DFVCO_MIN_HZ || dfvco > DFVCO_MAX_HZ) + dev_warn(dsim->dev, "fvco range should be 500MHz ~ 1000MHz\n"); + + dpll_out = dfvco / (1 << scaler); + dev_dbg(dsim->dev, "dpll_out = %lu, dfvco = %lu, scaler = %d\n", + dpll_out, dfvco, scaler); + + for (i = 0; i < ARRAY_SIZE(dpll_table); i++) { + if (dpll_out < dpll_table[i] * MHZ) { + freq_band = i; + break; + } + } + + dev_dbg(dsim->dev, "freq_band = %d\n", freq_band); + + exynos_mipi_dsi_pll_freq(dsim, pre_divider, main_divider, scaler); + + exynos_mipi_dsi_hs_zero_ctrl(dsim, 0); + exynos_mipi_dsi_prep_ctrl(dsim, 0); + + /* Freq Band */ + exynos_mipi_dsi_pll_freq_band(dsim, freq_band); + + /* Stable time */ + exynos_mipi_dsi_pll_stable_time(dsim, dsim->dsim_config->pll_stable_time); + + /* Enable PLL */ + dev_dbg(dsim->dev, "FOUT of mipi dphy pll is %luMHz\n", + (dpll_out / MHZ)); + + return dpll_out; +} + +static int exynos_mipi_dsi_set_clock(struct mipi_dsim_device *dsim, + unsigned int byte_clk_sel, unsigned int enable) +{ + unsigned int esc_div; + unsigned long esc_clk_error_rate; + unsigned long hs_clk = 0, byte_clk = 0, escape_clk = 0; + + if (enable) { + dsim->e_clk_src = byte_clk_sel; + + /* Escape mode clock and byte clock source */ + exynos_mipi_dsi_set_byte_clock_src(dsim, byte_clk_sel); + + /* DPHY, DSIM Link : D-PHY clock out */ + if (byte_clk_sel == DSIM_PLL_OUT_DIV8) { + hs_clk = exynos_mipi_dsi_change_pll(dsim, + dsim->dsim_config->p, dsim->dsim_config->m, + dsim->dsim_config->s); + if (hs_clk == 0) { + dev_err(dsim->dev, + "failed to get hs clock.\n"); + return -EINVAL; + } + + byte_clk = hs_clk / 8; + exynos_mipi_dsi_enable_pll_bypass(dsim, 0); + exynos_mipi_dsi_pll_on(dsim, 1); + /* DPHY : D-PHY clock out, DSIM link : external clock out */ + } else if (byte_clk_sel == DSIM_EXT_CLK_DIV8) { + dev_warn(dsim->dev, "this project is not support\n"); + dev_warn(dsim->dev, + "external clock source for MIPI DSIM.\n"); + } else if (byte_clk_sel == DSIM_EXT_CLK_BYPASS) { + dev_warn(dsim->dev, "this project is not support\n"); + dev_warn(dsim->dev, + "external clock source for MIPI DSIM\n"); + } + + /* escape clock divider */ + esc_div = byte_clk / (dsim->dsim_config->esc_clk); + dev_dbg(dsim->dev, + "esc_div = %d, byte_clk = %lu, esc_clk = %lu\n", + esc_div, byte_clk, dsim->dsim_config->esc_clk); + if ((byte_clk / esc_div) >= (20 * MHZ) || + (byte_clk / esc_div) > + dsim->dsim_config->esc_clk) + esc_div += 1; + + escape_clk = byte_clk / esc_div; + dev_dbg(dsim->dev, + "escape_clk = %lu, byte_clk = %lu, esc_div = %d\n", + escape_clk, byte_clk, esc_div); + + /* enable escape clock. */ + exynos_mipi_dsi_enable_byte_clock(dsim, 1); + + /* enable byte clk and escape clock */ + exynos_mipi_dsi_set_esc_clk_prs(dsim, 1, esc_div); + /* escape clock on lane */ + exynos_mipi_dsi_enable_esc_clk_on_lane(dsim, + (DSIM_LANE_CLOCK | dsim->data_lane), 1); + + dev_dbg(dsim->dev, "byte clock is %luMHz\n", + (byte_clk / MHZ)); + dev_dbg(dsim->dev, "escape clock that user's need is %lu\n", + (dsim->dsim_config->esc_clk / MHZ)); + dev_dbg(dsim->dev, "escape clock divider is %x\n", esc_div); + dev_dbg(dsim->dev, "escape clock is %luMHz\n", + ((byte_clk / esc_div) / MHZ)); + + if ((byte_clk / esc_div) > escape_clk) { + esc_clk_error_rate = escape_clk / + (byte_clk / esc_div); + dev_warn(dsim->dev, "error rate is %lu over.\n", + (esc_clk_error_rate / 100)); + } else if ((byte_clk / esc_div) < (escape_clk)) { + esc_clk_error_rate = (byte_clk / esc_div) / + escape_clk; + dev_warn(dsim->dev, "error rate is %lu under.\n", + (esc_clk_error_rate / 100)); + } + } else { + exynos_mipi_dsi_enable_esc_clk_on_lane(dsim, + (DSIM_LANE_CLOCK | dsim->data_lane), 0); + exynos_mipi_dsi_set_esc_clk_prs(dsim, 0, 0); + + /* disable escape clock. */ + exynos_mipi_dsi_enable_byte_clock(dsim, 0); + + if (byte_clk_sel == DSIM_PLL_OUT_DIV8) + exynos_mipi_dsi_pll_on(dsim, 0); + } + + return 0; +} + +int exynos_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim) +{ + dsim->state = DSIM_STATE_INIT; + + switch (dsim->dsim_config->e_no_data_lane) { + case DSIM_DATA_LANE_1: + dsim->data_lane = DSIM_LANE_DATA0; + break; + case DSIM_DATA_LANE_2: + dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1; + break; + case DSIM_DATA_LANE_3: + dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1 | + DSIM_LANE_DATA2; + break; + case DSIM_DATA_LANE_4: + dsim->data_lane = DSIM_LANE_DATA0 | DSIM_LANE_DATA1 | + DSIM_LANE_DATA2 | DSIM_LANE_DATA3; + break; + default: + dev_info(dsim->dev, "data lane is invalid.\n"); + return -EINVAL; + }; + + exynos_mipi_dsi_sw_reset(dsim); + exynos_mipi_dsi_func_reset(dsim); + + exynos_mipi_dsi_dp_dn_swap(dsim, 0); + + return 0; +} + +void exynos_mipi_dsi_init_interrupt(struct mipi_dsim_device *dsim) +{ + unsigned int src = 0; + + src = (INTSRC_SFR_FIFO_EMPTY | INTSRC_RX_DATA_DONE); + exynos_mipi_dsi_set_interrupt(dsim, src, 1); + + src = 0; + src = ~(INTMSK_RX_DONE | INTMSK_FIFO_EMPTY); + exynos_mipi_dsi_set_interrupt_mask(dsim, src, 1); +} + +int exynos_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + /* enable only frame done interrupt */ + exynos_mipi_dsi_set_interrupt_mask(dsim, INTMSK_FRAME_DONE, enable); + + return 0; +} + +void exynos_mipi_dsi_stand_by(struct mipi_dsim_device *dsim, + unsigned int enable) +{ + + /* consider Main display and Sub display. */ + + exynos_mipi_dsi_set_main_stand_by(dsim, enable); +} + +int exynos_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_config) +{ + struct mipi_dsim_platform_data *dsim_pd; + struct fb_videomode *timing; + + dsim_pd = (struct mipi_dsim_platform_data *)dsim->pd; + timing = (struct fb_videomode *)dsim_pd->lcd_panel_info; + + /* in case of VIDEO MODE (RGB INTERFACE), it sets polarities. */ + if (dsim_config->e_interface == (u32) DSIM_VIDEO) { + if (dsim_config->auto_vertical_cnt == 0) { + exynos_mipi_dsi_set_main_disp_vporch(dsim, + dsim_config->cmd_allow, + timing->upper_margin, + timing->lower_margin); + exynos_mipi_dsi_set_main_disp_hporch(dsim, + timing->left_margin, + timing->right_margin); + exynos_mipi_dsi_set_main_disp_sync_area(dsim, + timing->vsync_len, + timing->hsync_len); + } + } + + exynos_mipi_dsi_set_main_disp_resol(dsim, timing->xres, + timing->yres); + + exynos_mipi_dsi_display_config(dsim, dsim_config); + + dev_info(dsim->dev, "lcd panel ==> width = %d, height = %d\n", + timing->xres, timing->yres); + + return 0; +} + +int exynos_mipi_dsi_init_link(struct mipi_dsim_device *dsim) +{ + unsigned int time_out = 100; + + switch (dsim->state) { + case DSIM_STATE_INIT: + exynos_mipi_dsi_init_fifo_pointer(dsim, 0x1f); + + /* dsi configuration */ + exynos_mipi_dsi_init_config(dsim); + exynos_mipi_dsi_enable_lane(dsim, DSIM_LANE_CLOCK, 1); + exynos_mipi_dsi_enable_lane(dsim, dsim->data_lane, 1); + + /* set clock configuration */ + exynos_mipi_dsi_set_clock(dsim, dsim->dsim_config->e_byte_clk, 1); + + /* check clock and data lane state are stop state */ + while (!(exynos_mipi_dsi_is_lane_state(dsim))) { + time_out--; + if (time_out == 0) { + dev_err(dsim->dev, + "DSI Master is not stop state.\n"); + dev_err(dsim->dev, + "Check initialization process\n"); + + return -EINVAL; + } + } + if (time_out != 0) { + dev_info(dsim->dev, + "DSI Master driver has been completed.\n"); + dev_info(dsim->dev, "DSI Master state is stop state\n"); + } + + dsim->state = DSIM_STATE_STOP; + + /* BTA sequence counters */ + exynos_mipi_dsi_set_stop_state_counter(dsim, + dsim->dsim_config->stop_holding_cnt); + exynos_mipi_dsi_set_bta_timeout(dsim, + dsim->dsim_config->bta_timeout); + exynos_mipi_dsi_set_lpdr_timeout(dsim, + dsim->dsim_config->rx_timeout); + + return 0; + default: + dev_info(dsim->dev, "DSI Master is already init.\n"); + return 0; + } + + return 0; +} + +int exynos_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim) +{ + if (dsim->state != DSIM_STATE_STOP) { + dev_warn(dsim->dev, "DSIM is not in stop state.\n"); + return 0; + } + + if (dsim->e_clk_src == DSIM_EXT_CLK_BYPASS) { + dev_warn(dsim->dev, "clock source is external bypass.\n"); + return 0; + } + + dsim->state = DSIM_STATE_HSCLKEN; + + /* set LCDC and CPU transfer mode to HS. */ + exynos_mipi_dsi_set_lcdc_transfer_mode(dsim, 0); + exynos_mipi_dsi_set_cpu_transfer_mode(dsim, 0); + exynos_mipi_dsi_enable_hs_clock(dsim, 1); + + return 0; +} + +int exynos_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int mode) +{ + if (mode) { + if (dsim->state != DSIM_STATE_HSCLKEN) { + dev_err(dsim->dev, "HS Clock lane is not enabled.\n"); + return -EINVAL; + } + + exynos_mipi_dsi_set_lcdc_transfer_mode(dsim, 0); + } else { + if (dsim->state == DSIM_STATE_INIT || dsim->state == + DSIM_STATE_ULPS) { + dev_err(dsim->dev, + "DSI Master is not STOP or HSDT state.\n"); + return -EINVAL; + } + + exynos_mipi_dsi_set_cpu_transfer_mode(dsim, 0); + } + + return 0; +} + +int exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim) +{ + return _exynos_mipi_dsi_get_frame_done_status(dsim); +} + +int exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim) +{ + _exynos_mipi_dsi_clear_frame_done(dsim); + + return 0; +} + +int exynos_mipi_dsi_fifo_clear(struct mipi_dsim_device *dsim, + unsigned int val) +{ + int try = TRY_FIFO_CLEAR; + + exynos_mipi_dsi_sw_reset_release(dsim); + exynos_mipi_dsi_func_reset(dsim); + + do { + if (exynos_mipi_dsi_get_sw_reset_release(dsim)) { + exynos_mipi_dsi_init_interrupt(dsim); + dev_dbg(dsim->dev, "reset release done.\n"); + return 0; + } + } while (--try); + + dev_err(dsim->dev, "failed to clear dsim fifo.\n"); + return -EAGAIN; +} + +MODULE_AUTHOR("InKi Dae <inki.dae@samsung.com>"); +MODULE_DESCRIPTION("Samusung SoC MIPI-DSI common driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/exynos/exynos_mipi_dsi_common.h b/drivers/video/exynos/exynos_mipi_dsi_common.h new file mode 100644 index 000000000000..412552274df3 --- /dev/null +++ b/drivers/video/exynos/exynos_mipi_dsi_common.h @@ -0,0 +1,46 @@ +/* linux/drivers/video/exynos_mipi_dsi_common.h + * + * Header file for Samsung SoC MIPI-DSI common 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. +*/ + +#ifndef _EXYNOS_MIPI_DSI_COMMON_H +#define _EXYNOS_MIPI_DSI_COMMON_H + +static DECLARE_COMPLETION(dsim_rd_comp); +static DECLARE_COMPLETION(dsim_wr_comp); + +int exynos_mipi_dsi_wr_data(struct mipi_dsim_device *dsim, unsigned int data_id, + const unsigned char *data0, unsigned int data_size); +int exynos_mipi_dsi_rd_data(struct mipi_dsim_device *dsim, unsigned int data_id, + unsigned int data0, unsigned int req_size, u8 *rx_buf); +irqreturn_t exynos_mipi_dsi_interrupt_handler(int irq, void *dev_id); +void exynos_mipi_dsi_init_interrupt(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_init_dsim(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_stand_by(struct mipi_dsim_device *dsim, + unsigned int enable); +int exynos_mipi_dsi_set_display_mode(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_info); +int exynos_mipi_dsi_init_link(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_set_hs_enable(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_set_data_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int mode); +int exynos_mipi_dsi_enable_frame_done_int(struct mipi_dsim_device *dsim, + unsigned int enable); +int exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim); + +extern struct fb_info *registered_fb[FB_MAX] __read_mostly; + +int exynos_mipi_dsi_fifo_clear(struct mipi_dsim_device *dsim, + unsigned int val); + +#endif /* _EXYNOS_MIPI_DSI_COMMON_H */ diff --git a/drivers/video/exynos/exynos_mipi_dsi_lowlevel.c b/drivers/video/exynos/exynos_mipi_dsi_lowlevel.c new file mode 100644 index 000000000000..0ef38ce72af6 --- /dev/null +++ b/drivers/video/exynos/exynos_mipi_dsi_lowlevel.c @@ -0,0 +1,618 @@ +/* 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); +} diff --git a/drivers/video/exynos/exynos_mipi_dsi_lowlevel.h b/drivers/video/exynos/exynos_mipi_dsi_lowlevel.h new file mode 100644 index 000000000000..85460701c7ea --- /dev/null +++ b/drivers/video/exynos/exynos_mipi_dsi_lowlevel.h @@ -0,0 +1,112 @@ +/* linux/drivers/video/exynos/exynos_mipi_dsi_lowlevel.h + * + * Header file for 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. +*/ + +#ifndef _EXYNOS_MIPI_DSI_LOWLEVEL_H +#define _EXYNOS_MIPI_DSI_LOWLEVEL_H + +void exynos_mipi_dsi_func_reset(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_sw_reset(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_sw_reset_release(struct mipi_dsim_device *dsim); +int exynos_mipi_dsi_get_sw_reset_release(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_set_interrupt_mask(struct mipi_dsim_device *dsim, + unsigned int mode, unsigned int mask); +void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim, + unsigned int count); +void exynos_mipi_dsi_init_fifo_pointer(struct mipi_dsim_device *dsim, + unsigned int cfg); +void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim, + unsigned int value); +void exynos_mipi_dsi_set_phy_tunning(struct mipi_dsim_device *dsim, + unsigned int value); +void exynos_mipi_dsi_set_main_stand_by(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_set_main_disp_resol(struct mipi_dsim_device *dsim, + unsigned int width_resol, unsigned int height_resol); +void exynos_mipi_dsi_set_main_disp_vporch(struct mipi_dsim_device *dsim, + unsigned int cmd_allow, unsigned int vfront, unsigned int vback); +void exynos_mipi_dsi_set_main_disp_hporch(struct mipi_dsim_device *dsim, + unsigned int front, unsigned int back); +void exynos_mipi_dsi_set_main_disp_sync_area(struct mipi_dsim_device *dsim, + unsigned int vert, unsigned int hori); +void exynos_mipi_dsi_set_sub_disp_resol(struct mipi_dsim_device *dsim, + unsigned int vert, unsigned int hori); +void exynos_mipi_dsi_init_config(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_display_config(struct mipi_dsim_device *dsim, + struct mipi_dsim_config *dsim_config); +void exynos_mipi_dsi_set_data_lane_number(struct mipi_dsim_device *dsim, + unsigned int count); +void exynos_mipi_dsi_enable_lane(struct mipi_dsim_device *dsim, unsigned int lane, + unsigned int enable); +void exynos_mipi_dsi_enable_afc(struct mipi_dsim_device *dsim, unsigned int enable, + unsigned int afc_code); +void exynos_mipi_dsi_enable_pll_bypass(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_set_pll_pms(struct mipi_dsim_device *dsim, unsigned int p, + unsigned int m, unsigned int s); +void exynos_mipi_dsi_pll_freq_band(struct mipi_dsim_device *dsim, + unsigned int freq_band); +void exynos_mipi_dsi_pll_freq(struct mipi_dsim_device *dsim, + unsigned int pre_divider, unsigned int main_divider, + unsigned int scaler); +void exynos_mipi_dsi_pll_stable_time(struct mipi_dsim_device *dsim, + unsigned int lock_time); +void exynos_mipi_dsi_enable_pll(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_set_byte_clock_src(struct mipi_dsim_device *dsim, + unsigned int src); +void exynos_mipi_dsi_enable_byte_clock(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_set_esc_clk_prs(struct mipi_dsim_device *dsim, + unsigned int enable, unsigned int prs_val); +void exynos_mipi_dsi_enable_esc_clk_on_lane(struct mipi_dsim_device *dsim, + unsigned int lane_sel, unsigned int enable); +void exynos_mipi_dsi_force_dphy_stop_state(struct mipi_dsim_device *dsim, + unsigned int enable); +unsigned int exynos_mipi_dsi_is_lane_state(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_set_stop_state_counter(struct mipi_dsim_device *dsim, + unsigned int cnt_val); +void exynos_mipi_dsi_set_bta_timeout(struct mipi_dsim_device *dsim, + unsigned int timeout); +void exynos_mipi_dsi_set_lpdr_timeout(struct mipi_dsim_device *dsim, + unsigned int timeout); +void exynos_mipi_dsi_set_lcdc_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int lp); +void exynos_mipi_dsi_set_cpu_transfer_mode(struct mipi_dsim_device *dsim, + unsigned int lp); +void exynos_mipi_dsi_enable_hs_clock(struct mipi_dsim_device *dsim, + unsigned int enable); +void exynos_mipi_dsi_dp_dn_swap(struct mipi_dsim_device *dsim, + unsigned int swap_en); +void exynos_mipi_dsi_hs_zero_ctrl(struct mipi_dsim_device *dsim, + unsigned int hs_zero); +void exynos_mipi_dsi_prep_ctrl(struct mipi_dsim_device *dsim, unsigned int prep); +unsigned int exynos_mipi_dsi_read_interrupt(struct mipi_dsim_device *dsim); +unsigned int exynos_mipi_dsi_read_interrupt_mask(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_clear_interrupt(struct mipi_dsim_device *dsim, + unsigned int src); +void exynos_mipi_dsi_set_interrupt(struct mipi_dsim_device *dsim, + unsigned int src, unsigned int enable); +unsigned int exynos_mipi_dsi_is_pll_stable(struct mipi_dsim_device *dsim); +unsigned int exynos_mipi_dsi_get_fifo_state(struct mipi_dsim_device *dsim); +unsigned int _exynos_mipi_dsi_get_frame_done_status(struct mipi_dsim_device *dsim); +void _exynos_mipi_dsi_clear_frame_done(struct mipi_dsim_device *dsim); +void exynos_mipi_dsi_wr_tx_header(struct mipi_dsim_device *dsim, unsigned int di, + unsigned int data0, unsigned int data1); +void exynos_mipi_dsi_wr_tx_data(struct mipi_dsim_device *dsim, + unsigned int tx_data); +void exynos_mipi_dsi_rd_tx_header(struct mipi_dsim_device *dsim, + unsigned int data0, unsigned int data1); +unsigned int exynos_mipi_dsi_rd_rx_fifo(struct mipi_dsim_device *dsim); + +#endif /* _EXYNOS_MIPI_DSI_LOWLEVEL_H */ diff --git a/drivers/video/exynos/exynos_mipi_dsi_regs.h b/drivers/video/exynos/exynos_mipi_dsi_regs.h new file mode 100644 index 000000000000..4227106d3fd0 --- /dev/null +++ b/drivers/video/exynos/exynos_mipi_dsi_regs.h @@ -0,0 +1,149 @@ +/* linux/driver/video/exynos/exynos_mipi_dsi_regs.h + * + * Register definition file for Samsung MIPI-DSIM 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. +*/ + +#ifndef _EXYNOS_MIPI_DSI_REGS_H +#define _EXYNOS_MIPI_DSI_REGS_H + +#define EXYNOS_DSIM_STATUS 0x0 /* Status register */ +#define EXYNOS_DSIM_SWRST 0x4 /* Software reset register */ +#define EXYNOS_DSIM_CLKCTRL 0x8 /* Clock control register */ +#define EXYNOS_DSIM_TIMEOUT 0xc /* Time out register */ +#define EXYNOS_DSIM_CONFIG 0x10 /* Configuration register */ +#define EXYNOS_DSIM_ESCMODE 0x14 /* Escape mode register */ + +/* Main display image resolution register */ +#define EXYNOS_DSIM_MDRESOL 0x18 +#define EXYNOS_DSIM_MVPORCH 0x1c /* Main display Vporch register */ +#define EXYNOS_DSIM_MHPORCH 0x20 /* Main display Hporch register */ +#define EXYNOS_DSIM_MSYNC 0x24 /* Main display sync area register */ + +/* Sub display image resolution register */ +#define EXYNOS_DSIM_SDRESOL 0x28 +#define EXYNOS_DSIM_INTSRC 0x2c /* Interrupt source register */ +#define EXYNOS_DSIM_INTMSK 0x30 /* Interrupt mask register */ +#define EXYNOS_DSIM_PKTHDR 0x34 /* Packet Header FIFO register */ +#define EXYNOS_DSIM_PAYLOAD 0x38 /* Payload FIFO register */ +#define EXYNOS_DSIM_RXFIFO 0x3c /* Read FIFO register */ +#define EXYNOS_DSIM_FIFOTHLD 0x40 /* FIFO threshold level register */ +#define EXYNOS_DSIM_FIFOCTRL 0x44 /* FIFO status and control register */ + +/* FIFO memory AC characteristic register */ +#define EXYNOS_DSIM_PLLCTRL 0x4c /* PLL control register */ +#define EXYNOS_DSIM_PLLTMR 0x50 /* PLL timer register */ +#define EXYNOS_DSIM_PHYACCHR 0x54 /* D-PHY AC characteristic register */ +#define EXYNOS_DSIM_PHYACCHR1 0x58 /* D-PHY AC characteristic register1 */ + +/* DSIM_STATUS */ +#define DSIM_STOP_STATE_DAT(x) (((x) & 0xf) << 0) +#define DSIM_STOP_STATE_CLK (1 << 8) +#define DSIM_TX_READY_HS_CLK (1 << 10) + +/* DSIM_SWRST */ +#define DSIM_FUNCRST (1 << 16) +#define DSIM_SWRST (1 << 0) + +/* EXYNOS_DSIM_TIMEOUT */ +#define DSIM_LPDR_TOUT_SHIFT(x) ((x) << 0) +#define DSIM_BTA_TOUT_SHIFT(x) ((x) << 16) + +/* EXYNOS_DSIM_CLKCTRL */ +#define DSIM_LANE_ESC_CLKEN(x) (((x) & 0x1f) << 19) +#define DSIM_BYTE_CLKEN_SHIFT(x) ((x) << 24) +#define DSIM_BYTE_CLK_SRC_SHIFT(x) ((x) << 25) +#define DSIM_PLL_BYPASS_SHIFT(x) ((x) << 27) +#define DSIM_ESC_CLKEN_SHIFT(x) ((x) << 28) +#define DSIM_TX_REQUEST_HSCLK_SHIFT(x) ((x) << 31) + +/* EXYNOS_DSIM_CONFIG */ +#define DSIM_LANE_ENx(x) (((x) & 0x1f) << 0) +#define DSIM_NUM_OF_DATALANE_SHIFT(x) ((x) << 5) +#define DSIM_HSA_MODE_SHIFT(x) ((x) << 20) +#define DSIM_HBP_MODE_SHIFT(x) ((x) << 21) +#define DSIM_HFP_MODE_SHIFT(x) ((x) << 22) +#define DSIM_HSE_MODE_SHIFT(x) ((x) << 23) +#define DSIM_AUTO_MODE_SHIFT(x) ((x) << 24) +#define DSIM_EOT_DISABLE(x) ((x) << 28) +#define DSIM_AUTO_FLUSH(x) ((x) << 29) + +#define DSIM_NUM_OF_DATA_LANE(x) ((x) << DSIM_NUM_OF_DATALANE_SHIFT) + +/* EXYNOS_DSIM_ESCMODE */ +#define DSIM_TX_LPDT_LP (1 << 6) +#define DSIM_CMD_LPDT_LP (1 << 7) +#define DSIM_FORCE_STOP_STATE_SHIFT(x) ((x) << 20) +#define DSIM_STOP_STATE_CNT_SHIFT(x) ((x) << 21) + +/* EXYNOS_DSIM_MDRESOL */ +#define DSIM_MAIN_STAND_BY (1 << 31) +#define DSIM_MAIN_VRESOL(x) (((x) & 0x7ff) << 16) +#define DSIM_MAIN_HRESOL(x) (((x) & 0X7ff) << 0) + +/* EXYNOS_DSIM_MVPORCH */ +#define DSIM_CMD_ALLOW_SHIFT(x) ((x) << 28) +#define DSIM_STABLE_VFP_SHIFT(x) ((x) << 16) +#define DSIM_MAIN_VBP_SHIFT(x) ((x) << 0) +#define DSIM_CMD_ALLOW_MASK (0xf << 28) +#define DSIM_STABLE_VFP_MASK (0x7ff << 16) +#define DSIM_MAIN_VBP_MASK (0x7ff << 0) + +/* EXYNOS_DSIM_MHPORCH */ +#define DSIM_MAIN_HFP_SHIFT(x) ((x) << 16) +#define DSIM_MAIN_HBP_SHIFT(x) ((x) << 0) +#define DSIM_MAIN_HFP_MASK ((0xffff) << 16) +#define DSIM_MAIN_HBP_MASK ((0xffff) << 0) + +/* EXYNOS_DSIM_MSYNC */ +#define DSIM_MAIN_VSA_SHIFT(x) ((x) << 22) +#define DSIM_MAIN_HSA_SHIFT(x) ((x) << 0) +#define DSIM_MAIN_VSA_MASK ((0x3ff) << 22) +#define DSIM_MAIN_HSA_MASK ((0xffff) << 0) + +/* EXYNOS_DSIM_SDRESOL */ +#define DSIM_SUB_STANDY_SHIFT(x) ((x) << 31) +#define DSIM_SUB_VRESOL_SHIFT(x) ((x) << 16) +#define DSIM_SUB_HRESOL_SHIFT(x) ((x) << 0) +#define DSIM_SUB_STANDY_MASK ((0x1) << 31) +#define DSIM_SUB_VRESOL_MASK ((0x7ff) << 16) +#define DSIM_SUB_HRESOL_MASK ((0x7ff) << 0) + +/* EXYNOS_DSIM_INTSRC */ +#define INTSRC_PLL_STABLE (1 << 31) +#define INTSRC_SW_RST_RELEASE (1 << 30) +#define INTSRC_SFR_FIFO_EMPTY (1 << 29) +#define INTSRC_FRAME_DONE (1 << 24) +#define INTSRC_RX_DATA_DONE (1 << 18) + +/* EXYNOS_DSIM_INTMSK */ +#define INTMSK_FIFO_EMPTY (1 << 29) +#define INTMSK_BTA (1 << 25) +#define INTMSK_FRAME_DONE (1 << 24) +#define INTMSK_RX_TIMEOUT (1 << 21) +#define INTMSK_BTA_TIMEOUT (1 << 20) +#define INTMSK_RX_DONE (1 << 18) +#define INTMSK_RX_TE (1 << 17) +#define INTMSK_RX_ACK (1 << 16) +#define INTMSK_RX_ECC_ERR (1 << 15) +#define INTMSK_RX_CRC_ERR (1 << 14) + +/* EXYNOS_DSIM_FIFOCTRL */ +#define SFR_HEADER_EMPTY (1 << 22) + +/* EXYNOS_DSIM_PHYACCHR */ +#define DSIM_AFC_CTL(x) (((x) & 0x7) << 5) + +/* EXYNOS_DSIM_PLLCTRL */ +#define DSIM_PLL_EN_SHIFT(x) ((x) << 23) +#define DSIM_FREQ_BAND_SHIFT(x) ((x) << 24) + +#endif /* _EXYNOS_MIPI_DSI_REGS_H */ diff --git a/include/video/exynos_mipi_dsim.h b/include/video/exynos_mipi_dsim.h new file mode 100644 index 000000000000..772c770535f1 --- /dev/null +++ b/include/video/exynos_mipi_dsim.h @@ -0,0 +1,359 @@ +/* include/video/exynos_mipi_dsim.h + * + * Platform data header for Samsung SoC MIPI-DSIM. + * + * 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. +*/ + +#ifndef _EXYNOS_MIPI_DSIM_H +#define _EXYNOS_MIPI_DSIM_H + +#include <linux/device.h> +#include <linux/fb.h> + +#define PANEL_NAME_SIZE (32) + +/* + * Enumerate display interface type. + * + * DSIM_COMMAND means cpu interface and rgb interface for DSIM_VIDEO. + * + * P.S. MIPI DSI Master has two display controller intefaces, RGB Interface + * for main display and CPU Interface(same as I80 Interface) for main + * and sub display. + */ +enum mipi_dsim_interface_type { + DSIM_COMMAND, + DSIM_VIDEO +}; + +enum mipi_dsim_virtual_ch_no { + DSIM_VIRTUAL_CH_0, + DSIM_VIRTUAL_CH_1, + DSIM_VIRTUAL_CH_2, + DSIM_VIRTUAL_CH_3 +}; + +enum mipi_dsim_burst_mode_type { + DSIM_NON_BURST_SYNC_EVENT, + DSIM_BURST_SYNC_EVENT, + DSIM_NON_BURST_SYNC_PULSE, + DSIM_BURST, + DSIM_NON_VIDEO_MODE +}; + +enum mipi_dsim_no_of_data_lane { + DSIM_DATA_LANE_1, + DSIM_DATA_LANE_2, + DSIM_DATA_LANE_3, + DSIM_DATA_LANE_4 +}; + +enum mipi_dsim_byte_clk_src { + DSIM_PLL_OUT_DIV8, + DSIM_EXT_CLK_DIV8, + DSIM_EXT_CLK_BYPASS +}; + +enum mipi_dsim_pixel_format { + DSIM_CMD_3BPP, + DSIM_CMD_8BPP, + DSIM_CMD_12BPP, + DSIM_CMD_16BPP, + DSIM_VID_16BPP_565, + DSIM_VID_18BPP_666PACKED, + DSIM_18BPP_666LOOSELYPACKED, + DSIM_24BPP_888 +}; + +/* + * struct mipi_dsim_config - interface for configuring mipi-dsi controller. + * + * @auto_flush: enable or disable Auto flush of MD FIFO using VSYNC pulse. + * @eot_disable: enable or disable EoT packet in HS mode. + * @auto_vertical_cnt: specifies auto vertical count mode. + * in Video mode, the vertical line transition uses line counter + * configured by VSA, VBP, and Vertical resolution. + * If this bit is set to '1', the line counter does not use VSA and VBP + * registers.(in command mode, this variable is ignored) + * @hse: set horizontal sync event mode. + * In VSYNC pulse and Vporch area, MIPI DSI master transfers only HSYNC + * start packet to MIPI DSI slave at MIPI DSI spec1.1r02. + * this bit transfers HSYNC end packet in VSYNC pulse and Vporch area + * (in mommand mode, this variable is ignored) + * @hfp: specifies HFP disable mode. + * if this variable is set, DSI master ignores HFP area in VIDEO mode. + * (in command mode, this variable is ignored) + * @hbp: specifies HBP disable mode. + * if this variable is set, DSI master ignores HBP area in VIDEO mode. + * (in command mode, this variable is ignored) + * @hsa: specifies HSA disable mode. + * if this variable is set, DSI master ignores HSA area in VIDEO mode. + * (in command mode, this variable is ignored) + * @cma_allow: specifies the number of horizontal lines, where command packet + * transmission is allowed after Stable VFP period. + * @e_interface: specifies interface to be used.(CPU or RGB interface) + * @e_virtual_ch: specifies virtual channel number that main or + * sub diaplsy uses. + * @e_pixel_format: specifies pixel stream format for main or sub display. + * @e_burst_mode: selects Burst mode in Video mode. + * in Non-burst mode, RGB data area is filled with RGB data and NULL + * packets, according to input bandwidth of RGB interface. + * In Burst mode, RGB data area is filled with RGB data only. + * @e_no_data_lane: specifies data lane count to be used by Master. + * @e_byte_clk: select byte clock source. (it must be DSIM_PLL_OUT_DIV8) + * DSIM_EXT_CLK_DIV8 and DSIM_EXT_CLK_BYPASSS are not supported. + * @pll_stable_time: specifies the PLL Timer for stability of the ganerated + * clock(System clock cycle base) + * if the timer value goes to 0x00000000, the clock stable bit of status + * and interrupt register is set. + * @esc_clk: specifies escape clock frequency for getting the escape clock + * prescaler value. + * @stop_holding_cnt: specifies the interval value between transmitting + * read packet(or write "set_tear_on" command) and BTA request. + * after transmitting read packet or write "set_tear_on" command, + * BTA requests to D-PHY automatically. this counter value specifies + * the interval between them. + * @bta_timeout: specifies the timer for BTA. + * this register specifies time out from BTA request to change + * the direction with respect to Tx escape clock. + * @rx_timeout: specifies the timer for LP Rx mode timeout. + * this register specifies time out on how long RxValid deasserts, + * after RxLpdt asserts with respect to Tx escape clock. + * - RxValid specifies Rx data valid indicator. + * - RxLpdt specifies an indicator that D-PHY is under RxLpdt mode. + * - RxValid and RxLpdt specifies signal from D-PHY. + */ +struct mipi_dsim_config { + unsigned char auto_flush; + unsigned char eot_disable; + + unsigned char auto_vertical_cnt; + unsigned char hse; + unsigned char hfp; + unsigned char hbp; + unsigned char hsa; + unsigned char cmd_allow; + + enum mipi_dsim_interface_type e_interface; + enum mipi_dsim_virtual_ch_no e_virtual_ch; + enum mipi_dsim_pixel_format e_pixel_format; + enum mipi_dsim_burst_mode_type e_burst_mode; + enum mipi_dsim_no_of_data_lane e_no_data_lane; + enum mipi_dsim_byte_clk_src e_byte_clk; + + /* + * =========================================== + * | P | M | S | MHz | + * ------------------------------------------- + * | 3 | 100 | 3 | 100 | + * | 3 | 100 | 2 | 200 | + * | 3 | 63 | 1 | 252 | + * | 4 | 100 | 1 | 300 | + * | 4 | 110 | 1 | 330 | + * | 12 | 350 | 1 | 350 | + * | 3 | 100 | 1 | 400 | + * | 4 | 150 | 1 | 450 | + * | 6 | 118 | 1 | 472 | + * | 3 | 120 | 1 | 480 | + * | 12 | 250 | 0 | 500 | + * | 4 | 100 | 0 | 600 | + * | 3 | 81 | 0 | 648 | + * | 3 | 88 | 0 | 704 | + * | 3 | 90 | 0 | 720 | + * | 3 | 100 | 0 | 800 | + * | 12 | 425 | 0 | 850 | + * | 4 | 150 | 0 | 900 | + * | 12 | 475 | 0 | 950 | + * | 6 | 250 | 0 | 1000 | + * ------------------------------------------- + */ + + /* + * pms could be calculated as the following. + * M * 24 / P * 2 ^ S = MHz + */ + unsigned char p; + unsigned short m; + unsigned char s; + + unsigned int pll_stable_time; + unsigned long esc_clk; + + unsigned short stop_holding_cnt; + unsigned char bta_timeout; + unsigned short rx_timeout; +}; + +/* + * struct mipi_dsim_device - global interface for mipi-dsi driver. + * + * @dev: driver model representation of the device. + * @id: unique device id. + * @clock: pointer to MIPI-DSI clock of clock framework. + * @irq: interrupt number to MIPI-DSI controller. + * @reg_base: base address to memory mapped SRF of MIPI-DSI controller. + * (virtual address) + * @lock: the mutex protecting this data structure. + * @dsim_info: infomation for configuring mipi-dsi controller. + * @master_ops: callbacks to mipi-dsi operations. + * @dsim_lcd_dev: pointer to activated ddi device. + * (it would be registered by mipi-dsi driver.) + * @dsim_lcd_drv: pointer to activated_ddi driver. + * (it would be registered by mipi-dsi driver.) + * @lcd_info: pointer to mipi_lcd_info structure. + * @state: specifies status of MIPI-DSI controller. + * the status could be RESET, INIT, STOP, HSCLKEN and ULPS. + * @data_lane: specifiec enabled data lane number. + * this variable would be set by driver according to e_no_data_lane + * automatically. + * @e_clk_src: select byte clock source. + * @pd: pointer to MIPI-DSI driver platform data. + */ +struct mipi_dsim_device { + struct device *dev; + int id; + struct resource *res; + struct clk *clock; + unsigned int irq; + void __iomem *reg_base; + struct mutex lock; + + struct mipi_dsim_config *dsim_config; + struct mipi_dsim_master_ops *master_ops; + struct mipi_dsim_lcd_device *dsim_lcd_dev; + struct mipi_dsim_lcd_driver *dsim_lcd_drv; + + unsigned int state; + unsigned int data_lane; + unsigned int e_clk_src; + bool suspended; + + struct mipi_dsim_platform_data *pd; +}; + +/* + * struct mipi_dsim_platform_data - interface to platform data + * for mipi-dsi driver. + * + * @lcd_panel_name: specifies lcd panel name registered to mipi-dsi driver. + * lcd panel driver searched would be actived. + * @dsim_config: pointer of structure for configuring mipi-dsi controller. + * @enabled: indicate whether mipi controller got enabled or not. + * @lcd_panel_info: pointer for lcd panel specific structure. + * this structure specifies width, height, timing and polarity and so on. + * @phy_enable: pointer to a callback controlling D-PHY enable/reset + */ +struct mipi_dsim_platform_data { + char lcd_panel_name[PANEL_NAME_SIZE]; + + struct mipi_dsim_config *dsim_config; + unsigned int enabled; + void *lcd_panel_info; + + int (*phy_enable)(struct platform_device *pdev, bool on); +}; + +/* + * struct mipi_dsim_master_ops - callbacks to mipi-dsi operations. + * + * @cmd_write: transfer command to lcd panel at LP mode. + * @cmd_read: read command from rx register. + * @get_dsim_frame_done: get the status that all screen data have been + * transferred to mipi-dsi. + * @clear_dsim_frame_done: clear frame done status. + * @get_fb_frame_done: get frame done status of display controller. + * @trigger: trigger display controller. + * - this one would be used only in case of CPU mode. + * @set_early_blank_mode: set framebuffer blank mode. + * - this callback should be called prior to fb_blank() by a client driver + * only if needing. + * @set_blank_mode: set framebuffer blank mode. + * - this callback should be called after fb_blank() by a client driver + * only if needing. + */ + +struct mipi_dsim_master_ops { + int (*cmd_write)(struct mipi_dsim_device *dsim, unsigned int data_id, + const unsigned char *data0, unsigned int data1); + int (*cmd_read)(struct mipi_dsim_device *dsim, unsigned int data_id, + unsigned int data0, unsigned int req_size, u8 *rx_buf); + int (*get_dsim_frame_done)(struct mipi_dsim_device *dsim); + int (*clear_dsim_frame_done)(struct mipi_dsim_device *dsim); + + int (*get_fb_frame_done)(struct fb_info *info); + void (*trigger)(struct fb_info *info); + int (*set_early_blank_mode)(struct mipi_dsim_device *dsim, int power); + int (*set_blank_mode)(struct mipi_dsim_device *dsim, int power); +}; + +/* + * device structure for mipi-dsi based lcd panel. + * + * @name: name of the device to use with this device, or an + * alias for that name. + * @dev: driver model representation of the device. + * @id: id of device to be registered. + * @bus_id: bus id for identifing connected bus + * and this bus id should be same as id of mipi_dsim_device. + * @irq: irq number for signaling when framebuffer transfer of + * lcd panel module is completed. + * this irq would be used only for MIPI-DSI based CPU mode lcd panel. + * @master: pointer to mipi-dsi master device object. + * @platform_data: lcd panel specific platform data. + */ +struct mipi_dsim_lcd_device { + char *name; + struct device dev; + int id; + int bus_id; + int irq; + + struct mipi_dsim_device *master; + void *platform_data; +}; + +/* + * driver structure for mipi-dsi based lcd panel. + * + * this structure should be registered by lcd panel driver. + * mipi-dsi driver seeks lcd panel registered through name field + * and calls these callback functions in appropriate time. + * + * @name: name of the driver to use with this device, or an + * alias for that name. + * @id: id of driver to be registered. + * this id would be used for finding device object registered. + */ +struct mipi_dsim_lcd_driver { + char *name; + int id; + + void (*power_on)(struct mipi_dsim_lcd_device *dsim_dev, int enable); + void (*set_sequence)(struct mipi_dsim_lcd_device *dsim_dev); + int (*probe)(struct mipi_dsim_lcd_device *dsim_dev); + int (*remove)(struct mipi_dsim_lcd_device *dsim_dev); + void (*shutdown)(struct mipi_dsim_lcd_device *dsim_dev); + int (*suspend)(struct mipi_dsim_lcd_device *dsim_dev); + int (*resume)(struct mipi_dsim_lcd_device *dsim_dev); +}; + +/* + * register mipi_dsim_lcd_device to mipi-dsi master. + */ +int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device + *lcd_dev); +/** + * register mipi_dsim_lcd_driver object defined by lcd panel driver + * to mipi-dsi driver. + */ +int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver + *lcd_drv); +#endif /* _EXYNOS_MIPI_DSIM_H */ |