2 * Copyright (C) 2012 Samsung Electronics
4 * Author: InKi Dae <inki.dae@samsung.com>
5 * Author: Donghwa Lee <dh09.lee@samsung.com>
7 * SPDX-License-Identifier: GPL-2.0+
14 #include <linux/compat.h>
15 #include <linux/err.h>
16 #include <asm/arch/dsim.h>
17 #include <asm/arch/mipi_dsim.h>
18 #include <asm/arch/power.h>
19 #include <asm/arch/cpu.h>
20 #include <asm/arch/clk.h>
22 #include "exynos_mipi_dsi_lowlevel.h"
23 #include "exynos_mipi_dsi_common.h"
25 #define master_to_driver(a) (a->dsim_lcd_drv)
26 #define master_to_device(a) (a->dsim_lcd_dev)
28 DECLARE_GLOBAL_DATA_PTR;
30 struct mipi_dsim_ddi {
32 struct list_head list;
33 struct mipi_dsim_lcd_device *dsim_lcd_dev;
34 struct mipi_dsim_lcd_driver *dsim_lcd_drv;
37 static LIST_HEAD(dsim_ddi_list);
38 static LIST_HEAD(dsim_lcd_dev_list);
40 int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
42 struct mipi_dsim_ddi *dsim_ddi;
45 debug("mipi_dsim_lcd_device is NULL.\n");
50 debug("dsim_lcd_device name is NULL.\n");
54 dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
56 debug("failed to allocate dsim_ddi object.\n");
60 dsim_ddi->dsim_lcd_dev = lcd_dev;
62 list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
68 *exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv)
70 struct mipi_dsim_ddi *dsim_ddi;
71 struct mipi_dsim_lcd_device *lcd_dev;
73 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
74 lcd_dev = dsim_ddi->dsim_lcd_dev;
78 if (lcd_drv->id >= 0) {
79 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
80 lcd_drv->id == lcd_dev->id) {
82 * bus_id would be used to identify
85 dsim_ddi->bus_id = lcd_dev->bus_id;
90 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
92 * bus_id would be used to identify
95 dsim_ddi->bus_id = lcd_dev->bus_id;
102 list_del(&dsim_ddi_list);
108 int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
110 struct mipi_dsim_ddi *dsim_ddi;
113 debug("mipi_dsim_lcd_driver is NULL.\n");
117 if (!lcd_drv->name) {
118 debug("dsim_lcd_driver name is NULL.\n");
122 dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
124 debug("mipi_dsim_ddi object not found.\n");
128 dsim_ddi->dsim_lcd_drv = lcd_drv;
130 debug("registered panel driver(%s) to mipi-dsi driver.\n",
138 *exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim,
141 struct mipi_dsim_ddi *dsim_ddi;
142 struct mipi_dsim_lcd_driver *lcd_drv;
143 struct mipi_dsim_lcd_device *lcd_dev;
145 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
146 lcd_drv = dsim_ddi->dsim_lcd_drv;
147 lcd_dev = dsim_ddi->dsim_lcd_dev;
148 if (!lcd_drv || !lcd_dev)
151 debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
152 lcd_drv->id, lcd_dev->id);
154 if ((strcmp(lcd_drv->name, name) == 0)) {
155 lcd_dev->master = dsim;
157 dsim->dsim_lcd_dev = lcd_dev;
158 dsim->dsim_lcd_drv = lcd_drv;
167 /* define MIPI-DSI Master operations. */
168 static struct mipi_dsim_master_ops master_ops = {
169 .cmd_write = exynos_mipi_dsi_wr_data,
170 .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
171 .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
174 int exynos_mipi_dsi_init(struct exynos_platform_mipi_dsim *dsim_pd)
176 struct mipi_dsim_device *dsim;
177 struct mipi_dsim_config *dsim_config;
178 struct mipi_dsim_ddi *dsim_ddi;
180 dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
182 debug("failed to allocate dsim object.\n");
186 /* get mipi_dsim_config. */
187 dsim_config = dsim_pd->dsim_config;
188 if (dsim_config == NULL) {
189 debug("failed to get dsim config data.\n");
194 dsim->dsim_config = dsim_config;
195 dsim->master_ops = &master_ops;
197 /* bind lcd ddi matched with panel name. */
198 dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
200 debug("mipi_dsim_ddi object not found.\n");
203 if (dsim_pd->lcd_power)
204 dsim_pd->lcd_power();
206 if (dsim_pd->mipi_power)
207 dsim_pd->mipi_power();
209 /* phy_enable(unsigned int dev_index, unsigned int enable) */
210 if (dsim_pd->phy_enable)
211 dsim_pd->phy_enable(0, 1);
215 exynos_mipi_dsi_init_dsim(dsim);
216 exynos_mipi_dsi_init_link(dsim);
217 exynos_mipi_dsi_set_hs_enable(dsim);
219 /* set display timing. */
220 exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
222 /* initialize mipi-dsi client(lcd panel). */
223 if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
224 dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
225 dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
228 debug("mipi-dsi driver(%s mode) has been probed.\n",
229 (dsim_config->e_interface == DSIM_COMMAND) ?
235 int exynos_dsim_config_parse_dt(const void *blob, struct mipi_dsim_config *dt,
236 struct mipi_dsim_lcd_device *lcd_dt)
240 node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
242 printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
246 dt->e_interface = fdtdec_get_int(blob, node,
247 "samsung,dsim-config-e-interface", 0);
249 dt->e_virtual_ch = fdtdec_get_int(blob, node,
250 "samsung,dsim-config-e-virtual-ch", 0);
252 dt->e_pixel_format = fdtdec_get_int(blob, node,
253 "samsung,dsim-config-e-pixel-format", 0);
255 dt->e_burst_mode = fdtdec_get_int(blob, node,
256 "samsung,dsim-config-e-burst-mode", 0);
258 dt->e_no_data_lane = fdtdec_get_int(blob, node,
259 "samsung,dsim-config-e-no-data-lane", 0);
261 dt->e_byte_clk = fdtdec_get_int(blob, node,
262 "samsung,dsim-config-e-byte-clk", 0);
264 dt->hfp = fdtdec_get_int(blob, node,
265 "samsung,dsim-config-hfp", 0);
267 dt->p = fdtdec_get_int(blob, node,
268 "samsung,dsim-config-p", 0);
269 dt->m = fdtdec_get_int(blob, node,
270 "samsung,dsim-config-m", 0);
271 dt->s = fdtdec_get_int(blob, node,
272 "samsung,dsim-config-s", 0);
274 dt->pll_stable_time = fdtdec_get_int(blob, node,
275 "samsung,dsim-config-pll-stable-time", 0);
277 dt->esc_clk = fdtdec_get_int(blob, node,
278 "samsung,dsim-config-esc-clk", 0);
280 dt->stop_holding_cnt = fdtdec_get_int(blob, node,
281 "samsung,dsim-config-stop-holding-cnt", 0);
283 dt->bta_timeout = fdtdec_get_int(blob, node,
284 "samsung,dsim-config-bta-timeout", 0);
286 dt->rx_timeout = fdtdec_get_int(blob, node,
287 "samsung,dsim-config-rx-timeout", 0);
289 lcd_dt->name = fdtdec_get_config_string(blob,
290 "samsung,dsim-device-name");
292 lcd_dt->id = fdtdec_get_int(blob, node,
293 "samsung,dsim-device-id", 0);
295 lcd_dt->bus_id = fdtdec_get_int(blob, node,
296 "samsung,dsim-device-bus_id", 0);
298 lcd_dt->reverse_panel = fdtdec_get_int(blob, node,
299 "samsung,dsim-device-reverse-panel", 0);
304 void exynos_init_dsim_platform_data(vidinfo_t *vid)
306 static struct mipi_dsim_config dsim_config_dt;
307 static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
308 static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
310 if (exynos_dsim_config_parse_dt(gd->fdt_blob, &dsim_config_dt,
311 &mipi_lcd_device_dt))
312 debug("Can't get proper dsim config.\n");
314 strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
315 dsim_platform_data_dt.dsim_config = &dsim_config_dt;
316 dsim_platform_data_dt.mipi_power = mipi_power;
317 dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
318 dsim_platform_data_dt.lcd_panel_info = (void *)vid;
320 mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
321 exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
323 vid->dsim_platform_data_dt = &dsim_platform_data_dt;