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/err.h>
15 #include <asm/arch/dsim.h>
16 #include <asm/arch/mipi_dsim.h>
17 #include <asm/arch/power.h>
18 #include <asm/arch/cpu.h>
19 #include <asm/arch/clk.h>
21 #include "exynos_mipi_dsi_lowlevel.h"
22 #include "exynos_mipi_dsi_common.h"
24 #define master_to_driver(a) (a->dsim_lcd_drv)
25 #define master_to_device(a) (a->dsim_lcd_dev)
27 DECLARE_GLOBAL_DATA_PTR;
29 static struct exynos_platform_mipi_dsim *dsim_pd;
30 #ifdef CONFIG_OF_CONTROL
31 static struct mipi_dsim_config dsim_config_dt;
32 static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
33 static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
36 struct mipi_dsim_ddi {
38 struct list_head list;
39 struct mipi_dsim_lcd_device *dsim_lcd_dev;
40 struct mipi_dsim_lcd_driver *dsim_lcd_drv;
43 static LIST_HEAD(dsim_ddi_list);
44 static LIST_HEAD(dsim_lcd_dev_list);
46 int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
48 struct mipi_dsim_ddi *dsim_ddi;
51 debug("mipi_dsim_lcd_device is NULL.\n");
56 debug("dsim_lcd_device name is NULL.\n");
60 dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
62 debug("failed to allocate dsim_ddi object.\n");
66 dsim_ddi->dsim_lcd_dev = lcd_dev;
68 list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
74 *exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv)
76 struct mipi_dsim_ddi *dsim_ddi;
77 struct mipi_dsim_lcd_device *lcd_dev;
79 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
80 lcd_dev = dsim_ddi->dsim_lcd_dev;
84 if (lcd_drv->id >= 0) {
85 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
86 lcd_drv->id == lcd_dev->id) {
88 * bus_id would be used to identify
91 dsim_ddi->bus_id = lcd_dev->bus_id;
96 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
98 * bus_id would be used to identify
101 dsim_ddi->bus_id = lcd_dev->bus_id;
108 list_del(&dsim_ddi_list);
114 int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
116 struct mipi_dsim_ddi *dsim_ddi;
119 debug("mipi_dsim_lcd_driver is NULL.\n");
123 if (!lcd_drv->name) {
124 debug("dsim_lcd_driver name is NULL.\n");
128 dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
130 debug("mipi_dsim_ddi object not found.\n");
134 dsim_ddi->dsim_lcd_drv = lcd_drv;
136 debug("registered panel driver(%s) to mipi-dsi driver.\n",
144 *exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim,
147 struct mipi_dsim_ddi *dsim_ddi;
148 struct mipi_dsim_lcd_driver *lcd_drv;
149 struct mipi_dsim_lcd_device *lcd_dev;
151 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
152 lcd_drv = dsim_ddi->dsim_lcd_drv;
153 lcd_dev = dsim_ddi->dsim_lcd_dev;
154 if (!lcd_drv || !lcd_dev)
157 debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
158 lcd_drv->id, lcd_dev->id);
160 if ((strcmp(lcd_drv->name, name) == 0)) {
161 lcd_dev->master = dsim;
163 dsim->dsim_lcd_dev = lcd_dev;
164 dsim->dsim_lcd_drv = lcd_drv;
173 /* define MIPI-DSI Master operations. */
174 static struct mipi_dsim_master_ops master_ops = {
175 .cmd_write = exynos_mipi_dsi_wr_data,
176 .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
177 .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
180 int exynos_mipi_dsi_init(void)
182 struct mipi_dsim_device *dsim;
183 struct mipi_dsim_config *dsim_config;
184 struct mipi_dsim_ddi *dsim_ddi;
186 dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
188 debug("failed to allocate dsim object.\n");
192 /* get mipi_dsim_config. */
193 dsim_config = dsim_pd->dsim_config;
194 if (dsim_config == NULL) {
195 debug("failed to get dsim config data.\n");
200 dsim->dsim_config = dsim_config;
201 dsim->master_ops = &master_ops;
203 /* bind lcd ddi matched with panel name. */
204 dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
206 debug("mipi_dsim_ddi object not found.\n");
209 if (dsim_pd->lcd_power)
210 dsim_pd->lcd_power();
212 if (dsim_pd->mipi_power)
213 dsim_pd->mipi_power();
215 /* phy_enable(unsigned int dev_index, unsigned int enable) */
216 if (dsim_pd->phy_enable)
217 dsim_pd->phy_enable(0, 1);
221 exynos_mipi_dsi_init_dsim(dsim);
222 exynos_mipi_dsi_init_link(dsim);
223 exynos_mipi_dsi_set_hs_enable(dsim);
225 /* set display timing. */
226 exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
228 /* initialize mipi-dsi client(lcd panel). */
229 if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
230 dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
231 dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
234 debug("mipi-dsi driver(%s mode) has been probed.\n",
235 (dsim_config->e_interface == DSIM_COMMAND) ?
241 void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
244 debug("pd is NULL\n");
251 #ifdef CONFIG_OF_CONTROL
252 int exynos_dsim_config_parse_dt(const void *blob)
256 node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
258 printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
262 dsim_config_dt.e_interface = fdtdec_get_int(blob, node,
263 "samsung,dsim-config-e-interface", 0);
265 dsim_config_dt.e_virtual_ch = fdtdec_get_int(blob, node,
266 "samsung,dsim-config-e-virtual-ch", 0);
268 dsim_config_dt.e_pixel_format = fdtdec_get_int(blob, node,
269 "samsung,dsim-config-e-pixel-format", 0);
271 dsim_config_dt.e_burst_mode = fdtdec_get_int(blob, node,
272 "samsung,dsim-config-e-burst-mode", 0);
274 dsim_config_dt.e_no_data_lane = fdtdec_get_int(blob, node,
275 "samsung,dsim-config-e-no-data-lane", 0);
277 dsim_config_dt.e_byte_clk = fdtdec_get_int(blob, node,
278 "samsung,dsim-config-e-byte-clk", 0);
280 dsim_config_dt.hfp = fdtdec_get_int(blob, node,
281 "samsung,dsim-config-hfp", 0);
283 dsim_config_dt.p = fdtdec_get_int(blob, node,
284 "samsung,dsim-config-p", 0);
285 dsim_config_dt.m = fdtdec_get_int(blob, node,
286 "samsung,dsim-config-m", 0);
287 dsim_config_dt.s = fdtdec_get_int(blob, node,
288 "samsung,dsim-config-s", 0);
290 dsim_config_dt.pll_stable_time = fdtdec_get_int(blob, node,
291 "samsung,dsim-config-pll-stable-time", 0);
293 dsim_config_dt.esc_clk = fdtdec_get_int(blob, node,
294 "samsung,dsim-config-esc-clk", 0);
296 dsim_config_dt.stop_holding_cnt = fdtdec_get_int(blob, node,
297 "samsung,dsim-config-stop-holding-cnt", 0);
299 dsim_config_dt.bta_timeout = fdtdec_get_int(blob, node,
300 "samsung,dsim-config-bta-timeout", 0);
302 dsim_config_dt.rx_timeout = fdtdec_get_int(blob, node,
303 "samsung,dsim-config-rx-timeout", 0);
305 mipi_lcd_device_dt.name = fdtdec_get_config_string(blob,
306 "samsung,dsim-device-name");
308 mipi_lcd_device_dt.id = fdtdec_get_int(blob, node,
309 "samsung,dsim-device-id", 0);
311 mipi_lcd_device_dt.bus_id = fdtdec_get_int(blob, node,
312 "samsung,dsim-device-bus_id", 0);
314 mipi_lcd_device_dt.reverse_panel = fdtdec_get_int(blob, node,
315 "samsung,dsim-device-reverse-panel", 0);
320 void exynos_init_dsim_platform_data(vidinfo_t *vid)
322 if (exynos_dsim_config_parse_dt(gd->fdt_blob))
323 debug("Can't get proper dsim config.\n");
325 strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
326 dsim_platform_data_dt.dsim_config = &dsim_config_dt;
327 dsim_platform_data_dt.mipi_power = mipi_power;
328 dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
329 dsim_platform_data_dt.lcd_panel_info = (void *)vid;
331 mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
332 exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
334 dsim_pd = &dsim_platform_data_dt;