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 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;
35 struct mipi_dsim_ddi {
37 struct list_head list;
38 struct mipi_dsim_lcd_device *dsim_lcd_dev;
39 struct mipi_dsim_lcd_driver *dsim_lcd_drv;
42 static LIST_HEAD(dsim_ddi_list);
43 static LIST_HEAD(dsim_lcd_dev_list);
45 int exynos_mipi_dsi_register_lcd_device(struct mipi_dsim_lcd_device *lcd_dev)
47 struct mipi_dsim_ddi *dsim_ddi;
50 debug("mipi_dsim_lcd_device is NULL.\n");
55 debug("dsim_lcd_device name is NULL.\n");
59 dsim_ddi = kzalloc(sizeof(struct mipi_dsim_ddi), GFP_KERNEL);
61 debug("failed to allocate dsim_ddi object.\n");
65 dsim_ddi->dsim_lcd_dev = lcd_dev;
67 list_add_tail(&dsim_ddi->list, &dsim_ddi_list);
73 *exynos_mipi_dsi_find_lcd_device(struct mipi_dsim_lcd_driver *lcd_drv)
75 struct mipi_dsim_ddi *dsim_ddi;
76 struct mipi_dsim_lcd_device *lcd_dev;
78 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
79 lcd_dev = dsim_ddi->dsim_lcd_dev;
83 if (lcd_drv->id >= 0) {
84 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0 &&
85 lcd_drv->id == lcd_dev->id) {
87 * bus_id would be used to identify
90 dsim_ddi->bus_id = lcd_dev->bus_id;
95 if ((strcmp(lcd_drv->name, lcd_dev->name)) == 0) {
97 * bus_id would be used to identify
100 dsim_ddi->bus_id = lcd_dev->bus_id;
107 list_del(&dsim_ddi_list);
113 int exynos_mipi_dsi_register_lcd_driver(struct mipi_dsim_lcd_driver *lcd_drv)
115 struct mipi_dsim_ddi *dsim_ddi;
118 debug("mipi_dsim_lcd_driver is NULL.\n");
122 if (!lcd_drv->name) {
123 debug("dsim_lcd_driver name is NULL.\n");
127 dsim_ddi = exynos_mipi_dsi_find_lcd_device(lcd_drv);
129 debug("mipi_dsim_ddi object not found.\n");
133 dsim_ddi->dsim_lcd_drv = lcd_drv;
135 debug("registered panel driver(%s) to mipi-dsi driver.\n",
143 *exynos_mipi_dsi_bind_lcd_ddi(struct mipi_dsim_device *dsim,
146 struct mipi_dsim_ddi *dsim_ddi;
147 struct mipi_dsim_lcd_driver *lcd_drv;
148 struct mipi_dsim_lcd_device *lcd_dev;
150 list_for_each_entry(dsim_ddi, &dsim_ddi_list, list) {
151 lcd_drv = dsim_ddi->dsim_lcd_drv;
152 lcd_dev = dsim_ddi->dsim_lcd_dev;
153 if (!lcd_drv || !lcd_dev)
156 debug("lcd_drv->id = %d, lcd_dev->id = %d\n",
157 lcd_drv->id, lcd_dev->id);
159 if ((strcmp(lcd_drv->name, name) == 0)) {
160 lcd_dev->master = dsim;
162 dsim->dsim_lcd_dev = lcd_dev;
163 dsim->dsim_lcd_drv = lcd_drv;
172 /* define MIPI-DSI Master operations. */
173 static struct mipi_dsim_master_ops master_ops = {
174 .cmd_write = exynos_mipi_dsi_wr_data,
175 .get_dsim_frame_done = exynos_mipi_dsi_get_frame_done_status,
176 .clear_dsim_frame_done = exynos_mipi_dsi_clear_frame_done,
179 int exynos_mipi_dsi_init(void)
181 struct mipi_dsim_device *dsim;
182 struct mipi_dsim_config *dsim_config;
183 struct mipi_dsim_ddi *dsim_ddi;
185 dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
187 debug("failed to allocate dsim object.\n");
191 /* get mipi_dsim_config. */
192 dsim_config = dsim_pd->dsim_config;
193 if (dsim_config == NULL) {
194 debug("failed to get dsim config data.\n");
199 dsim->dsim_config = dsim_config;
200 dsim->master_ops = &master_ops;
202 /* bind lcd ddi matched with panel name. */
203 dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
205 debug("mipi_dsim_ddi object not found.\n");
208 if (dsim_pd->lcd_power)
209 dsim_pd->lcd_power();
211 if (dsim_pd->mipi_power)
212 dsim_pd->mipi_power();
214 /* phy_enable(unsigned int dev_index, unsigned int enable) */
215 if (dsim_pd->phy_enable)
216 dsim_pd->phy_enable(0, 1);
220 exynos_mipi_dsi_init_dsim(dsim);
221 exynos_mipi_dsi_init_link(dsim);
222 exynos_mipi_dsi_set_hs_enable(dsim);
224 /* set display timing. */
225 exynos_mipi_dsi_set_display_mode(dsim, dsim->dsim_config);
227 /* initialize mipi-dsi client(lcd panel). */
228 if (dsim_ddi->dsim_lcd_drv && dsim_ddi->dsim_lcd_drv->mipi_panel_init) {
229 dsim_ddi->dsim_lcd_drv->mipi_panel_init(dsim);
230 dsim_ddi->dsim_lcd_drv->mipi_display_on(dsim);
233 debug("mipi-dsi driver(%s mode) has been probed.\n",
234 (dsim_config->e_interface == DSIM_COMMAND) ?
240 void exynos_set_dsim_platform_data(struct exynos_platform_mipi_dsim *pd)
243 debug("pd is NULL\n");
250 int exynos_dsim_config_parse_dt(const void *blob)
254 node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_MIPI_DSI);
256 printf("exynos_mipi_dsi: Can't get device node for mipi dsi\n");
260 dsim_config_dt.e_interface = fdtdec_get_int(blob, node,
261 "samsung,dsim-config-e-interface", 0);
263 dsim_config_dt.e_virtual_ch = fdtdec_get_int(blob, node,
264 "samsung,dsim-config-e-virtual-ch", 0);
266 dsim_config_dt.e_pixel_format = fdtdec_get_int(blob, node,
267 "samsung,dsim-config-e-pixel-format", 0);
269 dsim_config_dt.e_burst_mode = fdtdec_get_int(blob, node,
270 "samsung,dsim-config-e-burst-mode", 0);
272 dsim_config_dt.e_no_data_lane = fdtdec_get_int(blob, node,
273 "samsung,dsim-config-e-no-data-lane", 0);
275 dsim_config_dt.e_byte_clk = fdtdec_get_int(blob, node,
276 "samsung,dsim-config-e-byte-clk", 0);
278 dsim_config_dt.hfp = fdtdec_get_int(blob, node,
279 "samsung,dsim-config-hfp", 0);
281 dsim_config_dt.p = fdtdec_get_int(blob, node,
282 "samsung,dsim-config-p", 0);
283 dsim_config_dt.m = fdtdec_get_int(blob, node,
284 "samsung,dsim-config-m", 0);
285 dsim_config_dt.s = fdtdec_get_int(blob, node,
286 "samsung,dsim-config-s", 0);
288 dsim_config_dt.pll_stable_time = fdtdec_get_int(blob, node,
289 "samsung,dsim-config-pll-stable-time", 0);
291 dsim_config_dt.esc_clk = fdtdec_get_int(blob, node,
292 "samsung,dsim-config-esc-clk", 0);
294 dsim_config_dt.stop_holding_cnt = fdtdec_get_int(blob, node,
295 "samsung,dsim-config-stop-holding-cnt", 0);
297 dsim_config_dt.bta_timeout = fdtdec_get_int(blob, node,
298 "samsung,dsim-config-bta-timeout", 0);
300 dsim_config_dt.rx_timeout = fdtdec_get_int(blob, node,
301 "samsung,dsim-config-rx-timeout", 0);
303 mipi_lcd_device_dt.name = fdtdec_get_config_string(blob,
304 "samsung,dsim-device-name");
306 mipi_lcd_device_dt.id = fdtdec_get_int(blob, node,
307 "samsung,dsim-device-id", 0);
309 mipi_lcd_device_dt.bus_id = fdtdec_get_int(blob, node,
310 "samsung,dsim-device-bus_id", 0);
312 mipi_lcd_device_dt.reverse_panel = fdtdec_get_int(blob, node,
313 "samsung,dsim-device-reverse-panel", 0);
318 void exynos_init_dsim_platform_data(vidinfo_t *vid)
320 if (exynos_dsim_config_parse_dt(gd->fdt_blob))
321 debug("Can't get proper dsim config.\n");
323 strcpy(dsim_platform_data_dt.lcd_panel_name, mipi_lcd_device_dt.name);
324 dsim_platform_data_dt.dsim_config = &dsim_config_dt;
325 dsim_platform_data_dt.mipi_power = mipi_power;
326 dsim_platform_data_dt.phy_enable = set_mipi_phy_ctrl;
327 dsim_platform_data_dt.lcd_panel_info = (void *)vid;
329 mipi_lcd_device_dt.platform_data = (void *)&dsim_platform_data_dt;
330 exynos_mipi_dsi_register_lcd_device(&mipi_lcd_device_dt);
332 dsim_pd = &dsim_platform_data_dt;