Lines Matching +full:lane +full:- +full:polarities
1 // SPDX-License-Identifier: GPL-2.0-only
18 #include <linux/media-bus-format.h>
25 #include <drm/bridge/samsung-dsim.h>
111 #define DSIM_MAIN_VRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 16)
112 #define DSIM_MAIN_HRESOL(x, num_bits) (((x) & ((1 << (num_bits)) - 1)) << 0)
490 * downstream driver - drivers/gpu/drm/bridge/sec-dsim.c
523 writel(val, dsi->reg_base + dsi->driver_data->reg_ofs[idx]); in samsung_dsim_write()
528 return readl(dsi->reg_base + dsi->driver_data->reg_ofs[idx]); in samsung_dsim_read()
533 if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300))) in samsung_dsim_wait_for_reset()
536 dev_err(dsi->dev, "timeout waiting for reset\n"); in samsung_dsim_wait_for_reset()
541 u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE]; in samsung_dsim_reset()
543 reinit_completion(&dsi->completed); in samsung_dsim_reset()
556 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_pll_find_pms()
575 if (_m < driver_data->m_min || _m > driver_data->m_max) in samsung_dsim_pll_find_pms()
580 if (tmp < driver_data->min_freq * MHZ || in samsung_dsim_pll_find_pms()
581 tmp > driver_data->max_freq * MHZ) in samsung_dsim_pll_find_pms()
587 delta = abs(fout - tmp); in samsung_dsim_pll_find_pms()
610 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_set_pll()
617 fin = dsi->pll_clk_rate; in samsung_dsim_set_pll()
620 dev_err(dsi->dev, in samsung_dsim_set_pll()
624 dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s); in samsung_dsim_set_pll()
626 writel(driver_data->reg_values[PLL_TIMER], in samsung_dsim_set_pll()
627 dsi->reg_base + driver_data->plltmr_reg); in samsung_dsim_set_pll()
629 reg = DSIM_PLL_EN | DSIM_PLL_P(p, driver_data->pll_p_offset) | in samsung_dsim_set_pll()
632 if (driver_data->has_freqband) { in samsung_dsim_set_pll()
645 dev_dbg(dsi->dev, "band %d\n", band); in samsung_dsim_set_pll()
650 if (dsi->swap_dn_dp_clk) in samsung_dsim_set_pll()
652 if (dsi->swap_dn_dp_data) in samsung_dsim_set_pll()
659 if (timeout-- == 0) { in samsung_dsim_set_pll()
660 dev_err(dsi->dev, "PLL failed to stabilize\n"); in samsung_dsim_set_pll()
666 dsi->hs_clock = fout; in samsung_dsim_set_pll()
676 struct drm_display_mode *m = &dsi->mode; in samsung_dsim_enable_clock()
677 int bpp = mipi_dsi_pixel_format_to_bpp(dsi->format); in samsung_dsim_enable_clock()
679 /* m->clock is in KHz */ in samsung_dsim_enable_clock()
680 pix_clk = m->clock * 1000; in samsung_dsim_enable_clock()
683 if (dsi->burst_clk_rate) in samsung_dsim_enable_clock()
684 hs_clk = samsung_dsim_set_pll(dsi, dsi->burst_clk_rate); in samsung_dsim_enable_clock()
686 hs_clk = samsung_dsim_set_pll(dsi, DIV_ROUND_UP(pix_clk * bpp, dsi->lanes)); in samsung_dsim_enable_clock()
689 dev_err(dsi->dev, "failed to configure DSI PLL\n"); in samsung_dsim_enable_clock()
690 return -EFAULT; in samsung_dsim_enable_clock()
694 esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate); in samsung_dsim_enable_clock()
702 dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n", in samsung_dsim_enable_clock()
712 | DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1) in samsung_dsim_enable_clock()
722 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_set_phy_ctrl()
723 const unsigned int *reg_values = driver_data->reg_values; in samsung_dsim_set_phy_ctrl()
728 unsigned long long byte_clock = dsi->hs_clock / 8; in samsung_dsim_set_phy_ctrl()
730 if (driver_data->has_freqband) in samsung_dsim_set_phy_ctrl()
733 phy_mipi_dphy_get_default_config_for_hsclk(dsi->hs_clock, in samsung_dsim_set_phy_ctrl()
734 dsi->lanes, &cfg); in samsung_dsim_set_phy_ctrl()
762 /* B D-PHY: D-PHY Master & Slave Analog Block control */ in samsung_dsim_set_phy_ctrl()
769 * T LPX: Transmitted length of any Low-Power state period in samsung_dsim_set_phy_ctrl()
770 * T HS-EXIT: Time that the transmitter drives LP-11 following a HS in samsung_dsim_set_phy_ctrl()
779 * T CLK-PREPARE: Time that the transmitter drives the Clock Lane LP-00 in samsung_dsim_set_phy_ctrl()
780 * Line state immediately before the HS-0 Line state starting the in samsung_dsim_set_phy_ctrl()
782 * T CLK-ZERO: Time that the transmitter drives the HS-0 state prior to in samsung_dsim_set_phy_ctrl()
785 * after the last associated Data Lane has transitioned to LP Mode in samsung_dsim_set_phy_ctrl()
786 * Interval is defined as the period from the end of T HS-TRAIL to in samsung_dsim_set_phy_ctrl()
787 * the beginning of T CLK-TRAIL in samsung_dsim_set_phy_ctrl()
788 * T CLK-TRAIL: Time that the transmitter drives the HS-0 state after in samsung_dsim_set_phy_ctrl()
800 * T HS-PREPARE: Time that the transmitter drives the Data Lane LP-00 in samsung_dsim_set_phy_ctrl()
801 * Line state immediately before the HS-0 Line state starting the in samsung_dsim_set_phy_ctrl()
803 * T HS-ZERO: Time that the transmitter drives the HS-0 state prior to in samsung_dsim_set_phy_ctrl()
805 * T HS-TRAIL: Time that the transmitter drives the flipped differential in samsung_dsim_set_phy_ctrl()
830 static void samsung_dsim_enable_lane(struct samsung_dsim *dsi, u32 lane) in samsung_dsim_enable_lane() argument
834 reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK | in samsung_dsim_enable_lane()
835 DSIM_LANE_EN(lane)); in samsung_dsim_enable_lane()
841 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_init_link()
865 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { in samsung_dsim_init_link()
872 if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH)) in samsung_dsim_init_link()
874 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) in samsung_dsim_init_link()
876 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) in samsung_dsim_init_link()
878 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT) in samsung_dsim_init_link()
880 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE) in samsung_dsim_init_link()
882 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_NO_HFP) in samsung_dsim_init_link()
884 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_NO_HBP) in samsung_dsim_init_link()
886 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_NO_HSA) in samsung_dsim_init_link()
890 if (dsi->mode_flags & MIPI_DSI_MODE_NO_EOT_PACKET) in samsung_dsim_init_link()
893 switch (dsi->format) { in samsung_dsim_init_link()
907 dev_err(dsi->dev, "invalid pixel format\n"); in samsung_dsim_init_link()
908 return -EINVAL; in samsung_dsim_init_link()
912 * Use non-continuous clock mode if the periparal wants and in samsung_dsim_init_link()
915 * In non-continous clock mode, host controller will turn off in samsung_dsim_init_link()
916 * the HS clock between high-speed transmissions to reduce in samsung_dsim_init_link()
919 if (driver_data->has_clklane_stop && in samsung_dsim_init_link()
920 dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) in samsung_dsim_init_link()
924 lanes_mask = BIT(dsi->lanes) - 1; in samsung_dsim_init_link()
927 /* Check clock and data lane state are stop state */ in samsung_dsim_init_link()
930 if (timeout-- == 0) { in samsung_dsim_init_link()
931 dev_err(dsi->dev, "waiting for bus lanes timed out\n"); in samsung_dsim_init_link()
932 return -EFAULT; in samsung_dsim_init_link()
943 reg |= DSIM_STOP_STATE_CNT(driver_data->reg_values[STOP_STATE_CNT]); in samsung_dsim_init_link()
954 struct drm_display_mode *m = &dsi->mode; in samsung_dsim_set_display_mode()
955 unsigned int num_bits_resol = dsi->driver_data->num_bits_resol; in samsung_dsim_set_display_mode()
958 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { in samsung_dsim_set_display_mode()
959 int byte_clk_khz = dsi->hs_clock / 1000 / 8; in samsung_dsim_set_display_mode()
960 int hfp = (m->hsync_start - m->hdisplay) * byte_clk_khz / m->clock; in samsung_dsim_set_display_mode()
961 int hbp = (m->htotal - m->hsync_end) * byte_clk_khz / m->clock; in samsung_dsim_set_display_mode()
962 int hsa = (m->hsync_end - m->hsync_start) * byte_clk_khz / m->clock; in samsung_dsim_set_display_mode()
965 hfp = max(hfp - 6, 0); in samsung_dsim_set_display_mode()
966 hbp = max(hbp - 6, 0); in samsung_dsim_set_display_mode()
967 hsa = max(hsa - 6, 0); in samsung_dsim_set_display_mode()
969 dev_dbg(dsi->dev, "calculated hfp: %u, hbp: %u, hsa: %u", in samsung_dsim_set_display_mode()
973 | DSIM_STABLE_VFP(m->vsync_start - m->vdisplay) in samsung_dsim_set_display_mode()
974 | DSIM_MAIN_VBP(m->vtotal - m->vsync_end); in samsung_dsim_set_display_mode()
980 reg = DSIM_MAIN_VSA(m->vsync_end - m->vsync_start) in samsung_dsim_set_display_mode()
984 reg = DSIM_MAIN_HRESOL(m->hdisplay, num_bits_resol) | in samsung_dsim_set_display_mode()
985 DSIM_MAIN_VRESOL(m->vdisplay, num_bits_resol); in samsung_dsim_set_display_mode()
989 dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay); in samsung_dsim_set_display_mode()
1011 if (!dsi->driver_data->has_broken_fifoctrl_emptyhdr) { in samsung_dsim_wait_for_hdr_fifo()
1028 } while (--timeout); in samsung_dsim_wait_for_hdr_fifo()
1030 return -ETIMEDOUT; in samsung_dsim_wait_for_hdr_fifo()
1056 struct device *dev = dsi->dev; in samsung_dsim_send_to_fifo()
1057 struct mipi_dsi_packet *pkt = &xfer->packet; in samsung_dsim_send_to_fifo()
1058 const u8 *payload = pkt->payload + xfer->tx_done; in samsung_dsim_send_to_fifo()
1059 u16 length = pkt->payload_length - xfer->tx_done; in samsung_dsim_send_to_fifo()
1060 bool first = !xfer->tx_done; in samsung_dsim_send_to_fifo()
1064 xfer, length, xfer->tx_done, xfer->rx_len, xfer->rx_done); in samsung_dsim_send_to_fifo()
1069 xfer->tx_done += length; in samsung_dsim_send_to_fifo()
1076 length -= 4; in samsung_dsim_send_to_fifo()
1097 reg = get_unaligned_le32(pkt->header); in samsung_dsim_send_to_fifo()
1103 if (NEQV(xfer->flags & MIPI_DSI_MSG_USE_LPM, in samsung_dsim_send_to_fifo()
1104 dsi->state & DSIM_STATE_CMD_LPM)) { in samsung_dsim_send_to_fifo()
1105 samsung_dsim_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM); in samsung_dsim_send_to_fifo()
1106 dsi->state ^= DSIM_STATE_CMD_LPM; in samsung_dsim_send_to_fifo()
1111 if (xfer->flags & MIPI_DSI_MSG_REQ_ACK) in samsung_dsim_send_to_fifo()
1118 u8 *payload = xfer->rx_payload + xfer->rx_done; in samsung_dsim_read_from_fifo()
1119 bool first = !xfer->rx_done; in samsung_dsim_read_from_fifo()
1120 struct device *dev = dsi->dev; in samsung_dsim_read_from_fifo()
1130 if (xfer->rx_len >= 2) { in samsung_dsim_read_from_fifo()
1132 ++xfer->rx_done; in samsung_dsim_read_from_fifo()
1138 ++xfer->rx_done; in samsung_dsim_read_from_fifo()
1139 xfer->rx_len = xfer->rx_done; in samsung_dsim_read_from_fifo()
1140 xfer->result = 0; in samsung_dsim_read_from_fifo()
1144 xfer->result = 0; in samsung_dsim_read_from_fifo()
1149 if (length > xfer->rx_len) { in samsung_dsim_read_from_fifo()
1152 xfer->rx_len, length); in samsung_dsim_read_from_fifo()
1153 length = xfer->rx_len; in samsung_dsim_read_from_fifo()
1154 } else if (length < xfer->rx_len) { in samsung_dsim_read_from_fifo()
1155 xfer->rx_len = length; in samsung_dsim_read_from_fifo()
1159 length = xfer->rx_len - xfer->rx_done; in samsung_dsim_read_from_fifo()
1160 xfer->rx_done += length; in samsung_dsim_read_from_fifo()
1170 length -= 4; in samsung_dsim_read_from_fifo()
1187 if (xfer->rx_done == xfer->rx_len) in samsung_dsim_read_from_fifo()
1188 xfer->result = 0; in samsung_dsim_read_from_fifo()
1196 } while (--length); in samsung_dsim_read_from_fifo()
1206 spin_lock_irqsave(&dsi->transfer_lock, flags); in samsung_dsim_transfer_start()
1208 if (list_empty(&dsi->transfer_list)) { in samsung_dsim_transfer_start()
1209 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer_start()
1213 xfer = list_first_entry(&dsi->transfer_list, in samsung_dsim_transfer_start()
1216 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer_start()
1218 if (xfer->packet.payload_length && in samsung_dsim_transfer_start()
1219 xfer->tx_done == xfer->packet.payload_length) in samsung_dsim_transfer_start()
1225 if (xfer->packet.payload_length || xfer->rx_len) in samsung_dsim_transfer_start()
1228 xfer->result = 0; in samsung_dsim_transfer_start()
1229 complete(&xfer->completed); in samsung_dsim_transfer_start()
1231 spin_lock_irqsave(&dsi->transfer_lock, flags); in samsung_dsim_transfer_start()
1233 list_del_init(&xfer->list); in samsung_dsim_transfer_start()
1234 start = !list_empty(&dsi->transfer_list); in samsung_dsim_transfer_start()
1236 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer_start()
1248 spin_lock_irqsave(&dsi->transfer_lock, flags); in samsung_dsim_transfer_finish()
1250 if (list_empty(&dsi->transfer_list)) { in samsung_dsim_transfer_finish()
1251 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer_finish()
1255 xfer = list_first_entry(&dsi->transfer_list, in samsung_dsim_transfer_finish()
1258 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer_finish()
1260 dev_dbg(dsi->dev, in samsung_dsim_transfer_finish()
1262 xfer, xfer->packet.payload_length, xfer->tx_done, xfer->rx_len, in samsung_dsim_transfer_finish()
1263 xfer->rx_done); in samsung_dsim_transfer_finish()
1265 if (xfer->tx_done != xfer->packet.payload_length) in samsung_dsim_transfer_finish()
1268 if (xfer->rx_done != xfer->rx_len) in samsung_dsim_transfer_finish()
1271 if (xfer->rx_done != xfer->rx_len) in samsung_dsim_transfer_finish()
1274 spin_lock_irqsave(&dsi->transfer_lock, flags); in samsung_dsim_transfer_finish()
1276 list_del_init(&xfer->list); in samsung_dsim_transfer_finish()
1277 start = !list_empty(&dsi->transfer_list); in samsung_dsim_transfer_finish()
1279 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer_finish()
1281 if (!xfer->rx_len) in samsung_dsim_transfer_finish()
1282 xfer->result = 0; in samsung_dsim_transfer_finish()
1283 complete(&xfer->completed); in samsung_dsim_transfer_finish()
1294 spin_lock_irqsave(&dsi->transfer_lock, flags); in samsung_dsim_remove_transfer()
1296 if (!list_empty(&dsi->transfer_list) && in samsung_dsim_remove_transfer()
1297 xfer == list_first_entry(&dsi->transfer_list, in samsung_dsim_remove_transfer()
1299 list_del_init(&xfer->list); in samsung_dsim_remove_transfer()
1300 start = !list_empty(&dsi->transfer_list); in samsung_dsim_remove_transfer()
1301 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_remove_transfer()
1307 list_del_init(&xfer->list); in samsung_dsim_remove_transfer()
1309 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_remove_transfer()
1318 xfer->tx_done = 0; in samsung_dsim_transfer()
1319 xfer->rx_done = 0; in samsung_dsim_transfer()
1320 xfer->result = -ETIMEDOUT; in samsung_dsim_transfer()
1321 init_completion(&xfer->completed); in samsung_dsim_transfer()
1323 spin_lock_irqsave(&dsi->transfer_lock, flags); in samsung_dsim_transfer()
1325 stopped = list_empty(&dsi->transfer_list); in samsung_dsim_transfer()
1326 list_add_tail(&xfer->list, &dsi->transfer_list); in samsung_dsim_transfer()
1328 spin_unlock_irqrestore(&dsi->transfer_lock, flags); in samsung_dsim_transfer()
1333 wait_for_completion_timeout(&xfer->completed, in samsung_dsim_transfer()
1335 if (xfer->result == -ETIMEDOUT) { in samsung_dsim_transfer()
1336 struct mipi_dsi_packet *pkt = &xfer->packet; in samsung_dsim_transfer()
1339 dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header, in samsung_dsim_transfer()
1340 (int)pkt->payload_length, pkt->payload); in samsung_dsim_transfer()
1341 return -ETIMEDOUT; in samsung_dsim_transfer()
1345 return xfer->result; in samsung_dsim_transfer()
1358 dev_warn(dsi->dev, "spurious interrupt\n"); in samsung_dsim_irq()
1370 complete(&dsi->completed); in samsung_dsim_irq()
1386 enable_irq(dsi->irq); in samsung_dsim_enable_irq()
1388 if (dsi->te_gpio) in samsung_dsim_enable_irq()
1389 enable_irq(gpiod_to_irq(dsi->te_gpio)); in samsung_dsim_enable_irq()
1394 if (dsi->te_gpio) in samsung_dsim_disable_irq()
1395 disable_irq(gpiod_to_irq(dsi->te_gpio)); in samsung_dsim_disable_irq()
1397 disable_irq(dsi->irq); in samsung_dsim_disable_irq()
1402 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_init()
1404 if (dsi->state & DSIM_STATE_INITIALIZED) in samsung_dsim_init()
1410 if (driver_data->reg_values[RESET_TYPE] == DSIM_FUNCRST) in samsung_dsim_init()
1411 samsung_dsim_enable_lane(dsi, BIT(dsi->lanes) - 1); in samsung_dsim_init()
1414 if (driver_data->wait_for_reset) in samsung_dsim_init()
1419 dsi->state |= DSIM_STATE_INITIALIZED; in samsung_dsim_init()
1430 if (dsi->state & DSIM_STATE_ENABLED) in samsung_dsim_atomic_pre_enable()
1433 ret = pm_runtime_resume_and_get(dsi->dev); in samsung_dsim_atomic_pre_enable()
1435 dev_err(dsi->dev, "failed to enable DSI device.\n"); in samsung_dsim_atomic_pre_enable()
1439 dsi->state |= DSIM_STATE_ENABLED; in samsung_dsim_atomic_pre_enable()
1442 * For Exynos-DSIM the downstream bridge, or panel are expecting in samsung_dsim_atomic_pre_enable()
1445 if (!samsung_dsim_hw_is_exynos(dsi->plat_data->hw_type)) { in samsung_dsim_atomic_pre_enable()
1460 dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE; in samsung_dsim_atomic_enable()
1468 if (!(dsi->state & DSIM_STATE_ENABLED)) in samsung_dsim_atomic_disable()
1471 dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE; in samsung_dsim_atomic_disable()
1481 dsi->state &= ~DSIM_STATE_ENABLED; in samsung_dsim_atomic_post_disable()
1482 pm_runtime_put_sync(dsi->dev); in samsung_dsim_atomic_post_disable()
1487 * AN13573 i.MX 8/RT MIPI DSI/CSI-2, Rev. 0, 21 March 2022
1551 struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; in samsung_dsim_atomic_check()
1567 if (dsi->plat_data->hw_type == DSIM_TYPE_IMX8MM) { in samsung_dsim_atomic_check()
1568 adjusted_mode->flags |= (DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); in samsung_dsim_atomic_check()
1569 adjusted_mode->flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); in samsung_dsim_atomic_check()
1570 } else if (dsi->plat_data->hw_type == DSIM_TYPE_IMX8MP) { in samsung_dsim_atomic_check()
1571 adjusted_mode->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); in samsung_dsim_atomic_check()
1572 adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); in samsung_dsim_atomic_check()
1584 drm_mode_copy(&dsi->mode, adjusted_mode); in samsung_dsim_mode_set()
1592 return drm_bridge_attach(bridge->encoder, dsi->out_bridge, bridge, in samsung_dsim_attach()
1613 const struct samsung_dsim_plat_data *pdata = dsi->plat_data; in samsung_dsim_te_irq_handler()
1615 if (pdata->host_ops && pdata->host_ops->te_irq_handler) in samsung_dsim_te_irq_handler()
1616 return pdata->host_ops->te_irq_handler(dsi); in samsung_dsim_te_irq_handler()
1626 dsi->te_gpio = devm_gpiod_get_optional(dev, "te", GPIOD_IN); in samsung_dsim_register_te_irq()
1627 if (!dsi->te_gpio) in samsung_dsim_register_te_irq()
1629 else if (IS_ERR(dsi->te_gpio)) in samsung_dsim_register_te_irq()
1630 return dev_err_probe(dev, PTR_ERR(dsi->te_gpio), "failed to get te GPIO\n"); in samsung_dsim_register_te_irq()
1632 te_gpio_irq = gpiod_to_irq(dsi->te_gpio); in samsung_dsim_register_te_irq()
1637 dev_err(dsi->dev, "request interrupt failed with %d\n", ret); in samsung_dsim_register_te_irq()
1638 gpiod_put(dsi->te_gpio); in samsung_dsim_register_te_irq()
1649 const struct samsung_dsim_plat_data *pdata = dsi->plat_data; in samsung_dsim_host_attach()
1650 struct device *dev = dsi->dev; in samsung_dsim_host_attach()
1651 struct device_node *np = dev->of_node; in samsung_dsim_host_attach()
1658 * through the upstream device (ie, MIPI-DCS for a MIPI-DSI device). in samsung_dsim_host_attach()
1675 * device-tree node. in samsung_dsim_host_attach()
1678 return -ENODEV; in samsung_dsim_host_attach()
1684 return -ENODEV; in samsung_dsim_host_attach()
1688 dsi->out_bridge = devm_drm_panel_bridge_add(dev, panel); in samsung_dsim_host_attach()
1690 dsi->out_bridge = of_drm_find_bridge(remote); in samsung_dsim_host_attach()
1691 if (!dsi->out_bridge) in samsung_dsim_host_attach()
1692 dsi->out_bridge = ERR_PTR(-EINVAL); in samsung_dsim_host_attach()
1697 if (IS_ERR(dsi->out_bridge)) { in samsung_dsim_host_attach()
1698 ret = PTR_ERR(dsi->out_bridge); in samsung_dsim_host_attach()
1703 DRM_DEV_INFO(dev, "Attached %s device\n", device->name); in samsung_dsim_host_attach()
1705 drm_bridge_add(&dsi->bridge); in samsung_dsim_host_attach()
1713 if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) { in samsung_dsim_host_attach()
1714 ret = samsung_dsim_register_te_irq(dsi, &device->dev); in samsung_dsim_host_attach()
1719 if (pdata->host_ops && pdata->host_ops->attach) { in samsung_dsim_host_attach()
1720 ret = pdata->host_ops->attach(dsi, device); in samsung_dsim_host_attach()
1725 dsi->lanes = device->lanes; in samsung_dsim_host_attach()
1726 dsi->format = device->format; in samsung_dsim_host_attach()
1727 dsi->mode_flags = device->mode_flags; in samsung_dsim_host_attach()
1734 if (dsi->te_gpio) { in samsung_dsim_unregister_te_irq()
1735 free_irq(gpiod_to_irq(dsi->te_gpio), dsi); in samsung_dsim_unregister_te_irq()
1736 gpiod_put(dsi->te_gpio); in samsung_dsim_unregister_te_irq()
1744 const struct samsung_dsim_plat_data *pdata = dsi->plat_data; in samsung_dsim_host_detach()
1746 dsi->out_bridge = NULL; in samsung_dsim_host_detach()
1748 if (pdata->host_ops && pdata->host_ops->detach) in samsung_dsim_host_detach()
1749 pdata->host_ops->detach(dsi, device); in samsung_dsim_host_detach()
1753 drm_bridge_remove(&dsi->bridge); in samsung_dsim_host_detach()
1765 if (!(dsi->state & DSIM_STATE_ENABLED)) in samsung_dsim_host_transfer()
1766 return -EINVAL; in samsung_dsim_host_transfer()
1776 xfer.rx_len = msg->rx_len; in samsung_dsim_host_transfer()
1777 xfer.rx_payload = msg->rx_buf; in samsung_dsim_host_transfer()
1778 xfer.flags = msg->flags; in samsung_dsim_host_transfer()
1803 struct device *dev = dsi->dev; in samsung_dsim_parse_dt()
1804 struct device_node *node = dev->of_node; in samsung_dsim_parse_dt()
1810 ret = samsung_dsim_of_read_u32(node, "samsung,pll-clock-frequency", in samsung_dsim_parse_dt()
1811 &dsi->pll_clk_rate, 1); in samsung_dsim_parse_dt()
1817 dsi->pll_clk_rate = clk_get_rate(pll_clk); in samsung_dsim_parse_dt()
1823 ret = samsung_dsim_of_read_u32(node, "samsung,burst-clock-frequency", in samsung_dsim_parse_dt()
1824 &dsi->burst_clk_rate, 1); in samsung_dsim_parse_dt()
1827 dsi->burst_clk_rate = 0; in samsung_dsim_parse_dt()
1830 ret = samsung_dsim_of_read_u32(node, "samsung,esc-clock-frequency", in samsung_dsim_parse_dt()
1831 &dsi->esc_clk_rate, 0); in samsung_dsim_parse_dt()
1835 endpoint = of_graph_get_endpoint_by_regs(node, 1, -1); in samsung_dsim_parse_dt()
1836 nr_lanes = of_property_count_u32_elems(endpoint, "data-lanes"); in samsung_dsim_parse_dt()
1838 /* Polarity 0 is clock lane, 1..4 are data lanes. */ in samsung_dsim_parse_dt()
1839 of_property_read_u32_array(endpoint, "lane-polarities", in samsung_dsim_parse_dt()
1843 DRM_DEV_ERROR(dsi->dev, "Data lanes polarities do not match"); in samsung_dsim_parse_dt()
1846 dsi->swap_dn_dp_clk = true; in samsung_dsim_parse_dt()
1848 dsi->swap_dn_dp_data = true; in samsung_dsim_parse_dt()
1856 return mipi_dsi_host_register(&dsi->dsi_host); in generic_dsim_register_host()
1861 mipi_dsi_host_unregister(&dsi->dsi_host); in generic_dsim_unregister_host()
1879 struct device *dev = &pdev->dev; in samsung_dsim_probe()
1885 return -ENOMEM; in samsung_dsim_probe()
1887 init_completion(&dsi->completed); in samsung_dsim_probe()
1888 spin_lock_init(&dsi->transfer_lock); in samsung_dsim_probe()
1889 INIT_LIST_HEAD(&dsi->transfer_list); in samsung_dsim_probe()
1891 dsi->dsi_host.ops = &samsung_dsim_ops; in samsung_dsim_probe()
1892 dsi->dsi_host.dev = dev; in samsung_dsim_probe()
1894 dsi->dev = dev; in samsung_dsim_probe()
1895 dsi->plat_data = of_device_get_match_data(dev); in samsung_dsim_probe()
1896 dsi->driver_data = samsung_dsim_types[dsi->plat_data->hw_type]; in samsung_dsim_probe()
1898 dsi->supplies[0].supply = "vddcore"; in samsung_dsim_probe()
1899 dsi->supplies[1].supply = "vddio"; in samsung_dsim_probe()
1900 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies), in samsung_dsim_probe()
1901 dsi->supplies); in samsung_dsim_probe()
1905 dsi->clks = devm_kcalloc(dev, dsi->driver_data->num_clks, in samsung_dsim_probe()
1906 sizeof(*dsi->clks), GFP_KERNEL); in samsung_dsim_probe()
1907 if (!dsi->clks) in samsung_dsim_probe()
1908 return -ENOMEM; in samsung_dsim_probe()
1910 for (i = 0; i < dsi->driver_data->num_clks; i++) { in samsung_dsim_probe()
1911 dsi->clks[i] = devm_clk_get(dev, clk_names[i]); in samsung_dsim_probe()
1912 if (IS_ERR(dsi->clks[i])) { in samsung_dsim_probe()
1914 dsi->clks[i] = devm_clk_get(dev, OLD_SCLK_MIPI_CLK_NAME); in samsung_dsim_probe()
1915 if (!IS_ERR(dsi->clks[i])) in samsung_dsim_probe()
1920 return PTR_ERR(dsi->clks[i]); in samsung_dsim_probe()
1924 dsi->reg_base = devm_platform_ioremap_resource(pdev, 0); in samsung_dsim_probe()
1925 if (IS_ERR(dsi->reg_base)) in samsung_dsim_probe()
1926 return PTR_ERR(dsi->reg_base); in samsung_dsim_probe()
1928 dsi->phy = devm_phy_optional_get(dev, "dsim"); in samsung_dsim_probe()
1929 if (IS_ERR(dsi->phy)) { in samsung_dsim_probe()
1931 return PTR_ERR(dsi->phy); in samsung_dsim_probe()
1934 dsi->irq = platform_get_irq(pdev, 0); in samsung_dsim_probe()
1935 if (dsi->irq < 0) in samsung_dsim_probe()
1936 return dsi->irq; in samsung_dsim_probe()
1938 ret = devm_request_threaded_irq(dev, dsi->irq, NULL, in samsung_dsim_probe()
1955 dsi->bridge.funcs = &samsung_dsim_bridge_funcs; in samsung_dsim_probe()
1956 dsi->bridge.of_node = dev->of_node; in samsung_dsim_probe()
1957 dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; in samsung_dsim_probe()
1959 /* DE_LOW: i.MX8M Mini/Nano LCDIF-DSIM glue logic inverts HS/VS/DE */ in samsung_dsim_probe()
1960 if (dsi->plat_data->hw_type == DSIM_TYPE_IMX8MM) in samsung_dsim_probe()
1961 dsi->bridge.timings = &samsung_dsim_bridge_timings_de_low; in samsung_dsim_probe()
1963 dsi->bridge.timings = &samsung_dsim_bridge_timings_de_high; in samsung_dsim_probe()
1965 if (dsi->plat_data->host_ops && dsi->plat_data->host_ops->register_host) in samsung_dsim_probe()
1966 ret = dsi->plat_data->host_ops->register_host(dsi); in samsung_dsim_probe()
1984 pm_runtime_disable(&pdev->dev); in samsung_dsim_remove()
1986 if (dsi->plat_data->host_ops && dsi->plat_data->host_ops->unregister_host) in samsung_dsim_remove()
1987 dsi->plat_data->host_ops->unregister_host(dsi); in samsung_dsim_remove()
1996 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_suspend()
2001 if (dsi->state & DSIM_STATE_INITIALIZED) { in samsung_dsim_suspend()
2002 dsi->state &= ~DSIM_STATE_INITIALIZED; in samsung_dsim_suspend()
2009 dsi->state &= ~DSIM_STATE_CMD_LPM; in samsung_dsim_suspend()
2011 phy_power_off(dsi->phy); in samsung_dsim_suspend()
2013 for (i = driver_data->num_clks - 1; i > -1; i--) in samsung_dsim_suspend()
2014 clk_disable_unprepare(dsi->clks[i]); in samsung_dsim_suspend()
2016 ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); in samsung_dsim_suspend()
2018 dev_err(dsi->dev, "cannot disable regulators %d\n", ret); in samsung_dsim_suspend()
2026 const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; in samsung_dsim_resume()
2029 ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies); in samsung_dsim_resume()
2031 dev_err(dsi->dev, "cannot enable regulators %d\n", ret); in samsung_dsim_resume()
2035 for (i = 0; i < driver_data->num_clks; i++) { in samsung_dsim_resume()
2036 ret = clk_prepare_enable(dsi->clks[i]); in samsung_dsim_resume()
2041 ret = phy_power_on(dsi->phy); in samsung_dsim_resume()
2043 dev_err(dsi->dev, "cannot enable phy %d\n", ret); in samsung_dsim_resume()
2050 while (--i > -1) in samsung_dsim_resume()
2051 clk_disable_unprepare(dsi->clks[i]); in samsung_dsim_resume()
2052 regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies); in samsung_dsim_resume()
2076 .compatible = "fsl,imx8mm-mipi-dsim",
2080 .compatible = "fsl,imx8mp-mipi-dsim",
2091 .name = "samsung-dsim",