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 static struct exynos_platform_mipi_dsim *dsim_pd;
31 #ifdef CONFIG_OF_CONTROL
32 static struct mipi_dsim_config dsim_config_dt;
33 static struct exynos_platform_mipi_dsim dsim_platform_data_dt;
34 static struct mipi_dsim_lcd_device mipi_lcd_device_dt;
37 struct mipi_dsim_ddi {
39 struct list_head list;
40 struct mipi_dsim_lcd_device *dsim_lcd_dev;
41 struct mipi_dsim_lcd_driver *dsim_lcd_drv;
44 static LIST_HEAD(dsim_ddi_list);
45 static LIST_HEAD(dsim_lcd_dev_list);
47 int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
49 struct mipi_dsim_ddi *dsim_ddi;
52 debug("mipi_dsim_lcd_device is NULL.\n");
57 debug("dsim_lcd_device name is NULL.\n");
61 dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
63 debug("failed to allocate dsim_ddi object.\n");
67 dsim_ddi->dsim_lcd_dev = lcd_dev;
69 list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
75 *exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv)
77 struct mipi_dsim_ddi *dsim_ddi;
78 struct mipi_dsim_lcd_device *lcd_dev;
80 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
81 lcd_dev = dsim_ddi->dsim_lcd_dev;
85 if (lcd_drv->id >= 0) {
86 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
87 lcd_drv->id == lcd_dev->id) {
89 * bus_id would be used to identify
92 dsim_ddi->bus_id = lcd_dev->bus_id;
97 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
99 * bus_id would be used to identify
102 dsim_ddi->bus_id = lcd_dev->bus_id;
109 list_del(&dsim_ddi_list);
115 int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
117 struct mipi_dsim_ddi *dsim_ddi;
120 debug("mipi_dsim_lcd_driver is NULL.\n");
124 if (!lcd_drv->name) {
125 debug("dsim_lcd_driver name is NULL.\n");
129 dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
131 debug("mipi_dsim_ddi object not found.\n");
135 dsim_ddi->dsim_lcd_drv = lcd_drv;
137 debug("registered panel driver(%s) to mipi-dsi driver.\n",
145 *exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim,
148 struct mipi_dsim_ddi *dsim_ddi;
149 struct mipi_dsim_lcd_driver *lcd_drv;
150 struct mipi_dsim_lcd_device *lcd_dev;
152 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
153 lcd_drv = dsim_ddi->dsim_lcd_drv;
154 lcd_dev = dsim_ddi->dsim_lcd_dev;
155 if (!lcd_drv || !lcd_dev)
158 debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
159 lcd_drv->id, lcd_dev->id);
161 if ((strcmp(lcd_drv->name, name) == 0)) {
162 lcd_dev->master = dsim;
164 dsim->dsim_lcd_dev = lcd_dev;
165 dsim->dsim_lcd_drv = lcd_drv;
174 /* define MIPI-DSI Master operations. */
175 static struct mipi_dsim_master_ops master_ops = {
176 .cmd_write = exynos_mipi_dsi_wr_data,
177 .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
178 .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
181 int exynos_mipi_dsi_init(void)
183 struct mipi_dsim_device *dsim;
184 struct mipi_dsim_config *dsim_config;
185 struct mipi_dsim_ddi *dsim_ddi;
187 dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
189 debug("failed to allocate dsim object.\n");
193 /* get mipi_dsim_config. */
194 dsim_config = dsim_pd->dsim_config;
195 if (dsim_config == NULL) {
196 debug("failed to get dsim config data.\n");
201 dsim->dsim_config = dsim_config;
202 dsim->master_ops = &master_ops;
204 /* bind lcd ddi matched with panel name. */
205 dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
207 debug("mipi_dsim_ddi object not found.\n");
210 if (dsim_pd->lcd_power)
211 dsim_pd->lcd_power();
213 if (dsim_pd->mipi_power)
214 dsim_pd->mipi_power();
216 /* phy_enable(unsigned int dev_index, unsigned int enable) */
217 if (dsim_pd->phy_enable)
218 dsim_pd->phy_enable(0, 1);
222 exynos_mipi_dsi_init_dsim(dsim);
223 exynos_mipi_dsi_init_link(dsim);
224 exynos_mipi_dsi_set_hs_enable(dsim);
226 /* set display timing. */
227 exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
229 /* initialize mipi-dsi client(lcd panel). */
230 if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
231 dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
232 dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
235 debug("mipi-dsi driver(%s mode) has been probed.\n",
236 (dsim_config->e_interface == DSIM_COMMAND) ?
242 void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
245 debug("pd is NULL\n");
252 #ifdef CONFIG_OF_CONTROL
253 int exynos_dsim_config_parse_dt(const void *blob)
257 node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
259 printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
263 dsim_config_dt.e_interface = fdtdec_get_int(blob, node,
264 "samsung,dsim-config-e-interface", 0);
266 dsim_config_dt.e_virtual_ch = fdtdec_get_int(blob, node,
267 "samsung,dsim-config-e-virtual-ch", 0);
269 dsim_config_dt.e_pixel_format = fdtdec_get_int(blob, node,
270 "samsung,dsim-config-e-pixel-format", 0);
272 dsim_config_dt.e_burst_mode = fdtdec_get_int(blob, node,
273 "samsung,dsim-config-e-burst-mode", 0);
275 dsim_config_dt.e_no_data_lane = fdtdec_get_int(blob, node,
276 "samsung,dsim-config-e-no-data-lane", 0);
278 dsim_config_dt.e_byte_clk = fdtdec_get_int(blob, node,
279 "samsung,dsim-config-e-byte-clk", 0);
281 dsim_config_dt.hfp = fdtdec_get_int(blob, node,
282 "samsung,dsim-config-hfp", 0);
284 dsim_config_dt.p = fdtdec_get_int(blob, node,
285 "samsung,dsim-config-p", 0);
286 dsim_config_dt.m = fdtdec_get_int(blob, node,
287 "samsung,dsim-config-m", 0);
288 dsim_config_dt.s = fdtdec_get_int(blob, node,
289 "samsung,dsim-config-s", 0);
291 dsim_config_dt.pll_stable_time = fdtdec_get_int(blob, node,
292 "samsung,dsim-config-pll-stable-time", 0);
294 dsim_config_dt.esc_clk = fdtdec_get_int(blob, node,
295 "samsung,dsim-config-esc-clk", 0);
297 dsim_config_dt.stop_holding_cnt = fdtdec_get_int(blob, node,
298 "samsung,dsim-config-stop-holding-cnt", 0);
300 dsim_config_dt.bta_timeout = fdtdec_get_int(blob, node,
301 "samsung,dsim-config-bta-timeout", 0);
303 dsim_config_dt.rx_timeout = fdtdec_get_int(blob, node,
304 "samsung,dsim-config-rx-timeout", 0);
306 mipi_lcd_device_dt.name = fdtdec_get_config_string(blob,
307 "samsung,dsim-device-name");
309 mipi_lcd_device_dt.id = fdtdec_get_int(blob, node,
310 "samsung,dsim-device-id", 0);
312 mipi_lcd_device_dt.bus_id = fdtdec_get_int(blob, node,
313 "samsung,dsim-device-bus_id", 0);
315 mipi_lcd_device_dt.reverse_panel = fdtdec_get_int(blob, node,
316 "samsung,dsim-device-reverse-panel", 0);
321 void exynos_init_dsim_platform_data(vidinfo_t *vid)
323 if (exynos_dsim_config_parse_dt(gd->fdt_blob))
324 debug("Can't get proper dsim config.\n");
326 strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
327 dsim_platform_data_dt.dsim_config = &dsim_config_dt;
328 dsim_platform_data_dt.mipi_power = mipi_power;
329 dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
330 dsim_platform_data_dt.lcd_panel_info = (void *)vid;
332 mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
333 exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
335 dsim_pd = &dsim_platform_data_dt;