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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2012 Samsung Electronics
- *
- * Author: InKi Dae <inki.dae@samsung.com>
- * Author: Donghwa Lee <dh09.lee@samsung.com>
- */
- #include <common.h>
- #include <log.h>
- #include <malloc.h>
- #include <fdtdec.h>
- #include <dm/devres.h>
- #include <linux/libfdt.h>
- #include <linux/compat.h>
- #include <linux/err.h>
- #include <asm/arch/dsim.h>
- #include <asm/arch/mipi_dsim.h>
- #include <asm/arch/power.h>
- #include <asm/arch/cpu.h>
- #include <asm/arch/clk.h>
- #include "exynos_mipi_dsi_lowlevel.h"
- #include "exynos_mipi_dsi_common.h"
- #define master_to_driver(a) (a->dsim_lcd_drv)
- #define master_to_device(a) (a->dsim_lcd_dev)
- DECLARE_GLOBAL_DATA_PTR;
- 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 LIST_HEAD(dsim_lcd_dev_list);
- int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
- {
- struct mipi_dsim_ddi *dsim_ddi;
- if (!lcd_dev) {
- debug("mipi_dsim_lcd_device is NULL.\n");
- return -EFAULT;
- }
- if (!lcd_dev->name) {
- debug("dsim_lcd_device name is NULL.\n");
- return -EFAULT;
- }
- dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
- if (!dsim_ddi) {
- debug("failed to allocate dsim_ddi object.\n");
- return -EFAULT;
- }
- dsim_ddi->dsim_lcd_dev = lcd_dev;
- list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
- 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;
- struct mipi_dsim_lcd_device *lcd_dev;
- list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
- lcd_dev = dsim_ddi->dsim_lcd_dev;
- if (!lcd_dev)
- continue;
- if (lcd_drv->id >= 0) {
- if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
- lcd_drv->id == lcd_dev->id) {
- /**
- * bus_id would be used to identify
- * connected bus.
- */
- dsim_ddi->bus_id = lcd_dev->bus_id;
- return dsim_ddi;
- }
- } else {
- 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;
- return dsim_ddi;
- }
- }
- kfree(dsim_ddi);
- list_del(&dsim_ddi_list);
- }
- 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) {
- debug("mipi_dsim_lcd_driver is NULL.\n");
- return -EFAULT;
- }
- if (!lcd_drv->name) {
- debug("dsim_lcd_driver name is NULL.\n");
- return -EFAULT;
- }
- dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
- if (!dsim_ddi) {
- debug("mipi_dsim_ddi object not found.\n");
- return -EFAULT;
- }
- dsim_ddi->dsim_lcd_drv = lcd_drv;
- debug("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;
- struct mipi_dsim_lcd_driver *lcd_drv;
- struct mipi_dsim_lcd_device *lcd_dev;
- list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
- lcd_drv = dsim_ddi->dsim_lcd_drv;
- lcd_dev = dsim_ddi->dsim_lcd_dev;
- if (!lcd_drv || !lcd_dev)
- continue;
- debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
- lcd_drv->id, lcd_dev->id);
- if ((strcmp(lcd_drv->name, name) == 0)) {
- lcd_dev->master = dsim;
- dsim->dsim_lcd_dev = lcd_dev;
- dsim->dsim_lcd_drv = lcd_drv;
- return dsim_ddi;
- }
- }
- return NULL;
- }
- /* define MIPI-DSI Master operations. */
- static struct mipi_dsim_master_ops master_ops = {
- .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,
- };
- int exynos_mipi_dsi_init(struct exynos_platform_mipi_dsim *dsim_pd)
- {
- struct mipi_dsim_device *dsim;
- struct mipi_dsim_config *dsim_config;
- struct mipi_dsim_ddi *dsim_ddi;
- dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
- if (!dsim) {
- debug("failed to allocate dsim object.\n");
- return -EFAULT;
- }
- /* get mipi_dsim_config. */
- dsim_config = dsim_pd->dsim_config;
- if (dsim_config == NULL) {
- debug("failed to get dsim config data.\n");
- return -EFAULT;
- }
- dsim->pd = dsim_pd;
- dsim->dsim_config = dsim_config;
- dsim->master_ops = &master_ops;
- /* bind lcd ddi matched with panel name. */
- dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
- if (!dsim_ddi) {
- debug("mipi_dsim_ddi object not found.\n");
- return -ENOSYS;
- }
- if (dsim_pd->lcd_power)
- dsim_pd->lcd_power();
- if (dsim_pd->mipi_power)
- dsim_pd->mipi_power();
- /* phy_enable(unsigned int dev_index, unsigned int enable) */
- if (dsim_pd->phy_enable)
- dsim_pd->phy_enable(0, 1);
- set_mipi_clk();
- 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);
- /* initialize mipi-dsi client(lcd panel). */
- if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
- dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
- dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
- }
- debug("mipi-dsi driver(%s mode) has been probed.\n",
- (dsim_config->e_interface == DSIM_COMMAND) ?
- "CPU" : "RGB");
- return 0;
- }
- int exynos_dsim_config_parse_dt(const void *blob, struct mipi_dsim_config *dt,
- struct mipi_dsim_lcd_device *lcd_dt)
- {
- int node;
- node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
- if (node <= 0) {
- printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
- return -ENODEV;
- }
- dt->e_interface = fdtdec_get_int(blob, node,
- "samsung,dsim-config-e-interface", 0);
- dt->e_virtual_ch = fdtdec_get_int(blob, node,
- "samsung,dsim-config-e-virtual-ch", 0);
- dt->e_pixel_format = fdtdec_get_int(blob, node,
- "samsung,dsim-config-e-pixel-format", 0);
- dt->e_burst_mode = fdtdec_get_int(blob, node,
- "samsung,dsim-config-e-burst-mode", 0);
- dt->e_no_data_lane = fdtdec_get_int(blob, node,
- "samsung,dsim-config-e-no-data-lane", 0);
- dt->e_byte_clk = fdtdec_get_int(blob, node,
- "samsung,dsim-config-e-byte-clk", 0);
- dt->hfp = fdtdec_get_int(blob, node,
- "samsung,dsim-config-hfp", 0);
- dt->p = fdtdec_get_int(blob, node,
- "samsung,dsim-config-p", 0);
- dt->m = fdtdec_get_int(blob, node,
- "samsung,dsim-config-m", 0);
- dt->s = fdtdec_get_int(blob, node,
- "samsung,dsim-config-s", 0);
- dt->pll_stable_time = fdtdec_get_int(blob, node,
- "samsung,dsim-config-pll-stable-time", 0);
- dt->esc_clk = fdtdec_get_int(blob, node,
- "samsung,dsim-config-esc-clk", 0);
- dt->stop_holding_cnt = fdtdec_get_int(blob, node,
- "samsung,dsim-config-stop-holding-cnt", 0);
- dt->bta_timeout = fdtdec_get_int(blob, node,
- "samsung,dsim-config-bta-timeout", 0);
- dt->rx_timeout = fdtdec_get_int(blob, node,
- "samsung,dsim-config-rx-timeout", 0);
- lcd_dt->name = fdtdec_get_config_string(blob,
- "samsung,dsim-device-name");
- lcd_dt->id = fdtdec_get_int(blob, node,
- "samsung,dsim-device-id", 0);
- lcd_dt->bus_id = fdtdec_get_int(blob, node,
- "samsung,dsim-device-bus_id", 0);
- lcd_dt->reverse_panel = fdtdec_get_int(blob, node,
- "samsung,dsim-device-reverse-panel", 0);
- return 0;
- }
- void exynos_init_dsim_platform_data(vidinfo_t *vid)
- {
- static struct mipi_dsim_config dsim_config_dt;
- static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
- static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
- if (exynos_dsim_config_parse_dt(gd->fdt_blob, &dsim_config_dt,
- &mipi_lcd_device_dt))
- debug("Can't get proper dsim config.\n");
- strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
- dsim_platform_data_dt.dsim_config = &dsim_config_dt;
- dsim_platform_data_dt.mipi_power = mipi_power;
- dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
- dsim_platform_data_dt.lcd_panel_info = (void *)vid;
- mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
- exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
- vid->dsim_platform_data_dt = &dsim_platform_data_dt;
- }
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