^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * DSI interface to the Samsung S6E63M0 panel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * (C) 2019 Linus Walleij
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <drm/drm_mipi_dsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <drm/drm_print.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "panel-samsung-s6e63m0.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define MCS_GLOBAL_PARAM 0xb0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define S6E63M0_DSI_MAX_CHUNK 15 /* CMD + 15 bytes max */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int s6e63m0_dsi_dcs_read(struct device *dev, const u8 cmd, u8 *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) ret = mipi_dsi_dcs_read(dsi, cmd, data, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) dev_err(dev, "could not read DCS CMD %02x\n", cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) dev_info(dev, "DSI read CMD %02x = %02x\n", cmd, *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int s6e63m0_dsi_dcs_write(struct device *dev, const u8 *data, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) const u8 *seqp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u8 cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) u8 cmdwritten;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) dev_info(dev, "DSI writing dcs seq: %*ph\n", (int)len, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* Pick out and skip past the DCS command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) cmd = *seqp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) seqp++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) cmdwritten = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) remain = len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) chunk = remain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Send max S6E63M0_DSI_MAX_CHUNK bytes at a time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (chunk > S6E63M0_DSI_MAX_CHUNK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) chunk = S6E63M0_DSI_MAX_CHUNK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ret = mipi_dsi_dcs_write(dsi, cmd, seqp, chunk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) dev_err(dev, "error sending DCS command seq cmd %02x\n", cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) cmdwritten += chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) seqp += chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) while (cmdwritten < remain) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) chunk = remain - cmdwritten;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (chunk > S6E63M0_DSI_MAX_CHUNK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) chunk = S6E63M0_DSI_MAX_CHUNK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ret = mipi_dsi_dcs_write(dsi, MCS_GLOBAL_PARAM, &cmdwritten, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) dev_err(dev, "error sending CMD %02x global param %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) cmd, cmdwritten);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) ret = mipi_dsi_dcs_write(dsi, cmd, seqp, chunk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) dev_err(dev, "error sending CMD %02x chunk\n", cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) cmdwritten += chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) seqp += chunk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) dev_info(dev, "sent command %02x %02x bytes\n", cmd, cmdwritten);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) usleep_range(8000, 9000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int s6e63m0_dsi_probe(struct mipi_dsi_device *dsi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct device *dev = &dsi->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) dsi->lanes = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) dsi->format = MIPI_DSI_FMT_RGB888;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dsi->hs_rate = 349440000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) dsi->lp_rate = 9600000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) MIPI_DSI_MODE_VIDEO_BURST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret = s6e63m0_probe(dev, s6e63m0_dsi_dcs_read, s6e63m0_dsi_dcs_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ret = mipi_dsi_attach(dsi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) s6e63m0_remove(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int s6e63m0_dsi_remove(struct mipi_dsi_device *dsi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) mipi_dsi_detach(dsi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return s6e63m0_remove(&dsi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static const struct of_device_id s6e63m0_dsi_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) { .compatible = "samsung,s6e63m0" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) MODULE_DEVICE_TABLE(of, s6e63m0_dsi_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static struct mipi_dsi_driver s6e63m0_dsi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .probe = s6e63m0_dsi_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .remove = s6e63m0_dsi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) .name = "panel-samsung-s6e63m0",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .of_match_table = s6e63m0_dsi_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) module_mipi_dsi_driver(s6e63m0_dsi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) MODULE_AUTHOR("Linus Walleij <linusw@kernel.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) MODULE_DESCRIPTION("s6e63m0 LCD DSI Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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