Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Dmitry Eremin-Solenikov | 4745 | 96.84% | 6 | 31.58% |
Maxime Ripard | 99 | 2.02% | 2 | 10.53% |
Jani Nikula | 19 | 0.39% | 3 | 15.79% |
Björn Andersson | 14 | 0.29% | 1 | 5.26% |
Juerg Haefliger | 10 | 0.20% | 1 | 5.26% |
Nícolas F. R. A. Prado | 4 | 0.08% | 1 | 5.26% |
Jyri Sarha | 3 | 0.06% | 1 | 5.26% |
Dave Airlie | 3 | 0.06% | 1 | 5.26% |
Uwe Kleine-König | 2 | 0.04% | 2 | 10.53% |
Jiapeng Chong | 1 | 0.02% | 1 | 5.26% |
Total | 4900 | 19 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2018, The Linux Foundation. All rights reserved. * Copyright (c) 2019-2020. Linaro Limited. */ #include <linux/firmware.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of_graph.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/wait.h> #include <linux/workqueue.h> #include <sound/hdmi-codec.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_edid.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> #define EDID_BLOCK_SIZE 128 #define EDID_NUM_BLOCKS 2 #define FW_FILE "lt9611uxc_fw.bin" struct lt9611uxc { struct device *dev; struct drm_bridge bridge; struct drm_connector connector; struct regmap *regmap; /* Protects all accesses to registers by stopping the on-chip MCU */ struct mutex ocm_lock; struct wait_queue_head wq; struct work_struct work; struct device_node *dsi0_node; struct device_node *dsi1_node; struct mipi_dsi_device *dsi0; struct mipi_dsi_device *dsi1; struct platform_device *audio_pdev; struct gpio_desc *reset_gpio; struct gpio_desc *enable_gpio; struct regulator_bulk_data supplies[2]; struct i2c_client *client; bool hpd_supported; bool edid_read; /* can be accessed from different threads, so protect this with ocm_lock */ bool hdmi_connected; uint8_t fw_version; }; #define LT9611_PAGE_CONTROL 0xff static const struct regmap_range_cfg lt9611uxc_ranges[] = { { .name = "register_range", .range_min = 0, .range_max = 0xd0ff, .selector_reg = LT9611_PAGE_CONTROL, .selector_mask = 0xff, .selector_shift = 0, .window_start = 0, .window_len = 0x100, }, }; static const struct regmap_config lt9611uxc_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 0xffff, .ranges = lt9611uxc_ranges, .num_ranges = ARRAY_SIZE(lt9611uxc_ranges), }; struct lt9611uxc_mode { u16 hdisplay; u16 vdisplay; u8 vrefresh; }; /* * This chip supports only a fixed set of modes. * Enumerate them here to check whether the mode is supported. */ static struct lt9611uxc_mode lt9611uxc_modes[] = { { 1920, 1080, 60 }, { 1920, 1080, 30 }, { 1920, 1080, 25 }, { 1366, 768, 60 }, { 1360, 768, 60 }, { 1280, 1024, 60 }, { 1280, 800, 60 }, { 1280, 720, 60 }, { 1280, 720, 50 }, { 1280, 720, 30 }, { 1152, 864, 60 }, { 1024, 768, 60 }, { 800, 600, 60 }, { 720, 576, 50 }, { 720, 480, 60 }, { 640, 480, 60 }, }; static struct lt9611uxc *bridge_to_lt9611uxc(struct drm_bridge *bridge) { return container_of(bridge, struct lt9611uxc, bridge); } static struct lt9611uxc *connector_to_lt9611uxc(struct drm_connector *connector) { return container_of(connector, struct lt9611uxc, connector); } static void lt9611uxc_lock(struct lt9611uxc *lt9611uxc) { mutex_lock(<9611uxc->ocm_lock); regmap_write(lt9611uxc->regmap, 0x80ee, 0x01); } static void lt9611uxc_unlock(struct lt9611uxc *lt9611uxc) { regmap_write(lt9611uxc->regmap, 0x80ee, 0x00); msleep(50); mutex_unlock(<9611uxc->ocm_lock); } static irqreturn_t lt9611uxc_irq_thread_handler(int irq, void *dev_id) { struct lt9611uxc *lt9611uxc = dev_id; unsigned int irq_status = 0; unsigned int hpd_status = 0; lt9611uxc_lock(lt9611uxc); regmap_read(lt9611uxc->regmap, 0xb022, &irq_status); regmap_read(lt9611uxc->regmap, 0xb023, &hpd_status); if (irq_status) regmap_write(lt9611uxc->regmap, 0xb022, 0); if (irq_status & BIT(0)) { lt9611uxc->edid_read = !!(hpd_status & BIT(0)); wake_up_all(<9611uxc->wq); } if (irq_status & BIT(1)) { lt9611uxc->hdmi_connected = hpd_status & BIT(1); schedule_work(<9611uxc->work); } lt9611uxc_unlock(lt9611uxc); return IRQ_HANDLED; } static void lt9611uxc_hpd_work(struct work_struct *work) { struct lt9611uxc *lt9611uxc = container_of(work, struct lt9611uxc, work); bool connected; if (lt9611uxc->connector.dev) { if (lt9611uxc->connector.dev->mode_config.funcs) drm_kms_helper_hotplug_event(lt9611uxc->connector.dev); } else { mutex_lock(<9611uxc->ocm_lock); connected = lt9611uxc->hdmi_connected; mutex_unlock(<9611uxc->ocm_lock); drm_bridge_hpd_notify(<9611uxc->bridge, connected ? connector_status_connected : connector_status_disconnected); } } static void lt9611uxc_reset(struct lt9611uxc *lt9611uxc) { gpiod_set_value_cansleep(lt9611uxc->reset_gpio, 1); msleep(20); gpiod_set_value_cansleep(lt9611uxc->reset_gpio, 0); msleep(20); gpiod_set_value_cansleep(lt9611uxc->reset_gpio, 1); msleep(300); } static void lt9611uxc_assert_5v(struct lt9611uxc *lt9611uxc) { if (!lt9611uxc->enable_gpio) return; gpiod_set_value_cansleep(lt9611uxc->enable_gpio, 1); msleep(20); } static int lt9611uxc_regulator_init(struct lt9611uxc *lt9611uxc) { int ret; lt9611uxc->supplies[0].supply = "vdd"; lt9611uxc->supplies[1].supply = "vcc"; ret = devm_regulator_bulk_get(lt9611uxc->dev, 2, lt9611uxc->supplies); if (ret < 0) return ret; return regulator_set_load(lt9611uxc->supplies[0].consumer, 200000); } static int lt9611uxc_regulator_enable(struct lt9611uxc *lt9611uxc) { int ret; ret = regulator_enable(lt9611uxc->supplies[0].consumer); if (ret < 0) return ret; usleep_range(1000, 10000); /* 50000 according to dtsi */ ret = regulator_enable(lt9611uxc->supplies[1].consumer); if (ret < 0) { regulator_disable(lt9611uxc->supplies[0].consumer); return ret; } return 0; } static struct lt9611uxc_mode *lt9611uxc_find_mode(const struct drm_display_mode *mode) { int i; for (i = 0; i < ARRAY_SIZE(lt9611uxc_modes); i++) { if (lt9611uxc_modes[i].hdisplay == mode->hdisplay && lt9611uxc_modes[i].vdisplay == mode->vdisplay && lt9611uxc_modes[i].vrefresh == drm_mode_vrefresh(mode)) { return <9611uxc_modes[i]; } } return NULL; } static struct mipi_dsi_device *lt9611uxc_attach_dsi(struct lt9611uxc *lt9611uxc, struct device_node *dsi_node) { const struct mipi_dsi_device_info info = { "lt9611uxc", 0, NULL }; struct mipi_dsi_device *dsi; struct mipi_dsi_host *host; struct device *dev = lt9611uxc->dev; int ret; host = of_find_mipi_dsi_host_by_node(dsi_node); if (!host) return ERR_PTR(dev_err_probe(dev, -EPROBE_DEFER, "failed to find dsi host\n")); dsi = devm_mipi_dsi_device_register_full(dev, host, &info); if (IS_ERR(dsi)) { dev_err(dev, "failed to create dsi device\n"); return dsi; } dsi->lanes = 4; dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_VIDEO_HSE; ret = devm_mipi_dsi_attach(dev, dsi); if (ret < 0) { dev_err(dev, "failed to attach dsi to host\n"); return ERR_PTR(ret); } return dsi; } static int lt9611uxc_connector_get_modes(struct drm_connector *connector) { struct lt9611uxc *lt9611uxc = connector_to_lt9611uxc(connector); const struct drm_edid *drm_edid; int count; drm_edid = drm_bridge_edid_read(<9611uxc->bridge, connector); drm_edid_connector_update(connector, drm_edid); count = drm_edid_connector_add_modes(connector); drm_edid_free(drm_edid); return count; } static enum drm_connector_status lt9611uxc_connector_detect(struct drm_connector *connector, bool force) { struct lt9611uxc *lt9611uxc = connector_to_lt9611uxc(connector); return lt9611uxc->bridge.funcs->detect(<9611uxc->bridge); } static enum drm_mode_status lt9611uxc_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct lt9611uxc_mode *lt9611uxc_mode = lt9611uxc_find_mode(mode); return lt9611uxc_mode ? MODE_OK : MODE_BAD; } static const struct drm_connector_helper_funcs lt9611uxc_bridge_connector_helper_funcs = { .get_modes = lt9611uxc_connector_get_modes, .mode_valid = lt9611uxc_connector_mode_valid, }; static const struct drm_connector_funcs lt9611uxc_bridge_connector_funcs = { .fill_modes = drm_helper_probe_single_connector_modes, .detect = lt9611uxc_connector_detect, .destroy = drm_connector_cleanup, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; static int lt9611uxc_connector_init(struct drm_bridge *bridge, struct lt9611uxc *lt9611uxc) { int ret; if (!bridge->encoder) { DRM_ERROR("Parent encoder object not found"); return -ENODEV; } lt9611uxc->connector.polled = DRM_CONNECTOR_POLL_HPD; drm_connector_helper_add(<9611uxc->connector, <9611uxc_bridge_connector_helper_funcs); ret = drm_connector_init(bridge->dev, <9611uxc->connector, <9611uxc_bridge_connector_funcs, DRM_MODE_CONNECTOR_HDMIA); if (ret) { DRM_ERROR("Failed to initialize connector with drm\n"); return ret; } return drm_connector_attach_encoder(<9611uxc->connector, bridge->encoder); } static int lt9611uxc_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); int ret; if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { ret = lt9611uxc_connector_init(bridge, lt9611uxc); if (ret < 0) return ret; } return 0; } static enum drm_mode_status lt9611uxc_bridge_mode_valid(struct drm_bridge *bridge, const struct drm_display_info *info, const struct drm_display_mode *mode) { struct lt9611uxc_mode *lt9611uxc_mode; lt9611uxc_mode = lt9611uxc_find_mode(mode); return lt9611uxc_mode ? MODE_OK : MODE_BAD; } static void lt9611uxc_video_setup(struct lt9611uxc *lt9611uxc, const struct drm_display_mode *mode) { u32 h_total, hactive, hsync_len, hfront_porch; u32 v_total, vactive, vsync_len, vfront_porch; h_total = mode->htotal; v_total = mode->vtotal; hactive = mode->hdisplay; hsync_len = mode->hsync_end - mode->hsync_start; hfront_porch = mode->hsync_start - mode->hdisplay; vactive = mode->vdisplay; vsync_len = mode->vsync_end - mode->vsync_start; vfront_porch = mode->vsync_start - mode->vdisplay; regmap_write(lt9611uxc->regmap, 0xd00d, (u8)(v_total / 256)); regmap_write(lt9611uxc->regmap, 0xd00e, (u8)(v_total % 256)); regmap_write(lt9611uxc->regmap, 0xd00f, (u8)(vactive / 256)); regmap_write(lt9611uxc->regmap, 0xd010, (u8)(vactive % 256)); regmap_write(lt9611uxc->regmap, 0xd011, (u8)(h_total / 256)); regmap_write(lt9611uxc->regmap, 0xd012, (u8)(h_total % 256)); regmap_write(lt9611uxc->regmap, 0xd013, (u8)(hactive / 256)); regmap_write(lt9611uxc->regmap, 0xd014, (u8)(hactive % 256)); regmap_write(lt9611uxc->regmap, 0xd015, (u8)(vsync_len % 256)); regmap_update_bits(lt9611uxc->regmap, 0xd016, 0xf, (u8)(hsync_len / 256)); regmap_write(lt9611uxc->regmap, 0xd017, (u8)(hsync_len % 256)); regmap_update_bits(lt9611uxc->regmap, 0xd018, 0xf, (u8)(vfront_porch / 256)); regmap_write(lt9611uxc->regmap, 0xd019, (u8)(vfront_porch % 256)); regmap_update_bits(lt9611uxc->regmap, 0xd01a, 0xf, (u8)(hfront_porch / 256)); regmap_write(lt9611uxc->regmap, 0xd01b, (u8)(hfront_porch % 256)); } static void lt9611uxc_bridge_mode_set(struct drm_bridge *bridge, const struct drm_display_mode *mode, const struct drm_display_mode *adj_mode) { struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); lt9611uxc_lock(lt9611uxc); lt9611uxc_video_setup(lt9611uxc, mode); lt9611uxc_unlock(lt9611uxc); } static enum drm_connector_status lt9611uxc_bridge_detect(struct drm_bridge *bridge) { struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); unsigned int reg_val = 0; int ret; bool connected = true; lt9611uxc_lock(lt9611uxc); if (lt9611uxc->hpd_supported) { ret = regmap_read(lt9611uxc->regmap, 0xb023, ®_val); if (ret) dev_err(lt9611uxc->dev, "failed to read hpd status: %d\n", ret); else connected = reg_val & BIT(1); } lt9611uxc->hdmi_connected = connected; lt9611uxc_unlock(lt9611uxc); return connected ? connector_status_connected : connector_status_disconnected; } static int lt9611uxc_wait_for_edid(struct lt9611uxc *lt9611uxc) { return wait_event_interruptible_timeout(lt9611uxc->wq, lt9611uxc->edid_read, msecs_to_jiffies(500)); } static int lt9611uxc_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len) { struct lt9611uxc *lt9611uxc = data; int ret; if (len > EDID_BLOCK_SIZE) return -EINVAL; if (block >= EDID_NUM_BLOCKS) return -EINVAL; lt9611uxc_lock(lt9611uxc); regmap_write(lt9611uxc->regmap, 0xb00b, 0x10); regmap_write(lt9611uxc->regmap, 0xb00a, block * EDID_BLOCK_SIZE); ret = regmap_noinc_read(lt9611uxc->regmap, 0xb0b0, buf, len); if (ret) dev_err(lt9611uxc->dev, "edid read failed: %d\n", ret); lt9611uxc_unlock(lt9611uxc); return 0; }; static const struct drm_edid *lt9611uxc_bridge_edid_read(struct drm_bridge *bridge, struct drm_connector *connector) { struct lt9611uxc *lt9611uxc = bridge_to_lt9611uxc(bridge); int ret; ret = lt9611uxc_wait_for_edid(lt9611uxc); if (ret < 0) { dev_err(lt9611uxc->dev, "wait for EDID failed: %d\n", ret); return NULL; } else if (ret == 0) { dev_err(lt9611uxc->dev, "wait for EDID timeout\n"); return NULL; } return drm_edid_read_custom(connector, lt9611uxc_get_edid_block, lt9611uxc); } static const struct drm_bridge_funcs lt9611uxc_bridge_funcs = { .attach = lt9611uxc_bridge_attach, .mode_valid = lt9611uxc_bridge_mode_valid, .mode_set = lt9611uxc_bridge_mode_set, .detect = lt9611uxc_bridge_detect, .edid_read = lt9611uxc_bridge_edid_read, }; static int lt9611uxc_parse_dt(struct device *dev, struct lt9611uxc *lt9611uxc) { lt9611uxc->dsi0_node = of_graph_get_remote_node(dev->of_node, 0, -1); if (!lt9611uxc->dsi0_node) { dev_err(lt9611uxc->dev, "failed to get remote node for primary dsi\n"); return -ENODEV; } lt9611uxc->dsi1_node = of_graph_get_remote_node(dev->of_node, 1, -1); return 0; } static int lt9611uxc_gpio_init(struct lt9611uxc *lt9611uxc) { struct device *dev = lt9611uxc->dev; lt9611uxc->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(lt9611uxc->reset_gpio)) { dev_err(dev, "failed to acquire reset gpio\n"); return PTR_ERR(lt9611uxc->reset_gpio); } lt9611uxc->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); if (IS_ERR(lt9611uxc->enable_gpio)) { dev_err(dev, "failed to acquire enable gpio\n"); return PTR_ERR(lt9611uxc->enable_gpio); } return 0; } static int lt9611uxc_read_device_rev(struct lt9611uxc *lt9611uxc) { unsigned int rev0, rev1, rev2; int ret; lt9611uxc_lock(lt9611uxc); ret = regmap_read(lt9611uxc->regmap, 0x8100, &rev0); ret |= regmap_read(lt9611uxc->regmap, 0x8101, &rev1); ret |= regmap_read(lt9611uxc->regmap, 0x8102, &rev2); if (ret) dev_err(lt9611uxc->dev, "failed to read revision: %d\n", ret); else dev_info(lt9611uxc->dev, "LT9611 revision: 0x%02x.%02x.%02x\n", rev0, rev1, rev2); lt9611uxc_unlock(lt9611uxc); return ret; } static int lt9611uxc_read_version(struct lt9611uxc *lt9611uxc) { unsigned int rev; int ret; lt9611uxc_lock(lt9611uxc); ret = regmap_read(lt9611uxc->regmap, 0xb021, &rev); if (ret) dev_err(lt9611uxc->dev, "failed to read revision: %d\n", ret); else dev_info(lt9611uxc->dev, "LT9611 version: 0x%02x\n", rev); lt9611uxc_unlock(lt9611uxc); return ret < 0 ? ret : rev; } static int lt9611uxc_hdmi_hw_params(struct device *dev, void *data, struct hdmi_codec_daifmt *fmt, struct hdmi_codec_params *hparms) { /* * LT9611UXC will automatically detect rate and sample size, so no need * to setup anything here. */ return 0; } static void lt9611uxc_audio_shutdown(struct device *dev, void *data) { } static int lt9611uxc_hdmi_i2s_get_dai_id(struct snd_soc_component *component, struct device_node *endpoint) { struct of_endpoint of_ep; int ret; ret = of_graph_parse_endpoint(endpoint, &of_ep); if (ret < 0) return ret; /* * HDMI sound should be located as reg = <2> * Then, it is sound port 0 */ if (of_ep.port == 2) return 0; return -EINVAL; } static const struct hdmi_codec_ops lt9611uxc_codec_ops = { .hw_params = lt9611uxc_hdmi_hw_params, .audio_shutdown = lt9611uxc_audio_shutdown, .get_dai_id = lt9611uxc_hdmi_i2s_get_dai_id, }; static int lt9611uxc_audio_init(struct device *dev, struct lt9611uxc *lt9611uxc) { struct hdmi_codec_pdata codec_data = { .ops = <9611uxc_codec_ops, .max_i2s_channels = 2, .i2s = 1, .data = lt9611uxc, }; lt9611uxc->audio_pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, &codec_data, sizeof(codec_data)); return PTR_ERR_OR_ZERO(lt9611uxc->audio_pdev); } static void lt9611uxc_audio_exit(struct lt9611uxc *lt9611uxc) { if (lt9611uxc->audio_pdev) { platform_device_unregister(lt9611uxc->audio_pdev); lt9611uxc->audio_pdev = NULL; } } #define LT9611UXC_FW_PAGE_SIZE 32 static void lt9611uxc_firmware_write_page(struct lt9611uxc *lt9611uxc, u16 addr, const u8 *buf) { struct reg_sequence seq_write_prepare[] = { REG_SEQ0(0x805a, 0x04), REG_SEQ0(0x805a, 0x00), REG_SEQ0(0x805e, 0xdf), REG_SEQ0(0x805a, 0x20), REG_SEQ0(0x805a, 0x00), REG_SEQ0(0x8058, 0x21), }; struct reg_sequence seq_write_addr[] = { REG_SEQ0(0x805b, (addr >> 16) & 0xff), REG_SEQ0(0x805c, (addr >> 8) & 0xff), REG_SEQ0(0x805d, addr & 0xff), REG_SEQ0(0x805a, 0x10), REG_SEQ0(0x805a, 0x00), }; regmap_write(lt9611uxc->regmap, 0x8108, 0xbf); msleep(20); regmap_write(lt9611uxc->regmap, 0x8108, 0xff); msleep(20); regmap_multi_reg_write(lt9611uxc->regmap, seq_write_prepare, ARRAY_SIZE(seq_write_prepare)); regmap_noinc_write(lt9611uxc->regmap, 0x8059, buf, LT9611UXC_FW_PAGE_SIZE); regmap_multi_reg_write(lt9611uxc->regmap, seq_write_addr, ARRAY_SIZE(seq_write_addr)); msleep(20); } static void lt9611uxc_firmware_read_page(struct lt9611uxc *lt9611uxc, u16 addr, char *buf) { struct reg_sequence seq_read_page[] = { REG_SEQ0(0x805a, 0xa0), REG_SEQ0(0x805a, 0x80), REG_SEQ0(0x805b, (addr >> 16) & 0xff), REG_SEQ0(0x805c, (addr >> 8) & 0xff), REG_SEQ0(0x805d, addr & 0xff), REG_SEQ0(0x805a, 0x90), REG_SEQ0(0x805a, 0x80), REG_SEQ0(0x8058, 0x21), }; regmap_multi_reg_write(lt9611uxc->regmap, seq_read_page, ARRAY_SIZE(seq_read_page)); regmap_noinc_read(lt9611uxc->regmap, 0x805f, buf, LT9611UXC_FW_PAGE_SIZE); } static char *lt9611uxc_firmware_read(struct lt9611uxc *lt9611uxc, size_t size) { struct reg_sequence seq_read_setup[] = { REG_SEQ0(0x805a, 0x84), REG_SEQ0(0x805a, 0x80), }; char *readbuf; u16 offset; readbuf = kzalloc(ALIGN(size, 32), GFP_KERNEL); if (!readbuf) return NULL; regmap_multi_reg_write(lt9611uxc->regmap, seq_read_setup, ARRAY_SIZE(seq_read_setup)); for (offset = 0; offset < size; offset += LT9611UXC_FW_PAGE_SIZE) lt9611uxc_firmware_read_page(lt9611uxc, offset, &readbuf[offset]); return readbuf; } static int lt9611uxc_firmware_update(struct lt9611uxc *lt9611uxc) { int ret; u16 offset; size_t remain; char *readbuf; const struct firmware *fw; struct reg_sequence seq_setup[] = { REG_SEQ0(0x805e, 0xdf), REG_SEQ0(0x8058, 0x00), REG_SEQ0(0x8059, 0x50), REG_SEQ0(0x805a, 0x10), REG_SEQ0(0x805a, 0x00), }; struct reg_sequence seq_block_erase[] = { REG_SEQ0(0x805a, 0x04), REG_SEQ0(0x805a, 0x00), REG_SEQ0(0x805b, 0x00), REG_SEQ0(0x805c, 0x00), REG_SEQ0(0x805d, 0x00), REG_SEQ0(0x805a, 0x01), REG_SEQ0(0x805a, 0x00), }; ret = request_firmware(&fw, FW_FILE, lt9611uxc->dev); if (ret < 0) return ret; dev_info(lt9611uxc->dev, "Updating firmware\n"); lt9611uxc_lock(lt9611uxc); regmap_multi_reg_write(lt9611uxc->regmap, seq_setup, ARRAY_SIZE(seq_setup)); /* * Need erase block 2 timess here. Sometimes, block erase can fail. * This is a workaroud. */ regmap_multi_reg_write(lt9611uxc->regmap, seq_block_erase, ARRAY_SIZE(seq_block_erase)); msleep(3000); regmap_multi_reg_write(lt9611uxc->regmap, seq_block_erase, ARRAY_SIZE(seq_block_erase)); msleep(3000); for (offset = 0, remain = fw->size; remain >= LT9611UXC_FW_PAGE_SIZE; offset += LT9611UXC_FW_PAGE_SIZE, remain -= LT9611UXC_FW_PAGE_SIZE) lt9611uxc_firmware_write_page(lt9611uxc, offset, fw->data + offset); if (remain > 0) { char buf[LT9611UXC_FW_PAGE_SIZE]; memset(buf, 0xff, LT9611UXC_FW_PAGE_SIZE); memcpy(buf, fw->data + offset, remain); lt9611uxc_firmware_write_page(lt9611uxc, offset, buf); } msleep(20); readbuf = lt9611uxc_firmware_read(lt9611uxc, fw->size); if (!readbuf) { ret = -ENOMEM; goto out; } if (!memcmp(readbuf, fw->data, fw->size)) { dev_err(lt9611uxc->dev, "Firmware update failed\n"); print_hex_dump(KERN_ERR, "fw: ", DUMP_PREFIX_OFFSET, 16, 1, readbuf, fw->size, false); ret = -EINVAL; } else { dev_info(lt9611uxc->dev, "Firmware updates successfully\n"); ret = 0; } kfree(readbuf); out: lt9611uxc_unlock(lt9611uxc); lt9611uxc_reset(lt9611uxc); release_firmware(fw); return ret; } static ssize_t lt9611uxc_firmware_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct lt9611uxc *lt9611uxc = dev_get_drvdata(dev); int ret; ret = lt9611uxc_firmware_update(lt9611uxc); if (ret < 0) return ret; return len; } static ssize_t lt9611uxc_firmware_show(struct device *dev, struct device_attribute *attr, char *buf) { struct lt9611uxc *lt9611uxc = dev_get_drvdata(dev); return sysfs_emit(buf, "%02x\n", lt9611uxc->fw_version); } static DEVICE_ATTR_RW(lt9611uxc_firmware); static struct attribute *lt9611uxc_attrs[] = { &dev_attr_lt9611uxc_firmware.attr, NULL, }; static const struct attribute_group lt9611uxc_attr_group = { .attrs = lt9611uxc_attrs, }; static const struct attribute_group *lt9611uxc_attr_groups[] = { <9611uxc_attr_group, NULL, }; static int lt9611uxc_probe(struct i2c_client *client) { struct lt9611uxc *lt9611uxc; struct device *dev = &client->dev; int ret; bool fw_updated = false; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { dev_err(dev, "device doesn't support I2C\n"); return -ENODEV; } lt9611uxc = devm_kzalloc(dev, sizeof(*lt9611uxc), GFP_KERNEL); if (!lt9611uxc) return -ENOMEM; lt9611uxc->dev = dev; lt9611uxc->client = client; mutex_init(<9611uxc->ocm_lock); lt9611uxc->regmap = devm_regmap_init_i2c(client, <9611uxc_regmap_config); if (IS_ERR(lt9611uxc->regmap)) { dev_err(lt9611uxc->dev, "regmap i2c init failed\n"); return PTR_ERR(lt9611uxc->regmap); } ret = lt9611uxc_parse_dt(dev, lt9611uxc); if (ret) { dev_err(dev, "failed to parse device tree\n"); return ret; } ret = lt9611uxc_gpio_init(lt9611uxc); if (ret < 0) goto err_of_put; ret = lt9611uxc_regulator_init(lt9611uxc); if (ret < 0) goto err_of_put; lt9611uxc_assert_5v(lt9611uxc); ret = lt9611uxc_regulator_enable(lt9611uxc); if (ret) goto err_of_put; lt9611uxc_reset(lt9611uxc); ret = lt9611uxc_read_device_rev(lt9611uxc); if (ret) { dev_err(dev, "failed to read chip rev\n"); goto err_disable_regulators; } retry: ret = lt9611uxc_read_version(lt9611uxc); if (ret < 0) { dev_err(dev, "failed to read FW version\n"); goto err_disable_regulators; } else if (ret == 0) { if (!fw_updated) { fw_updated = true; dev_err(dev, "FW version 0, enforcing firmware update\n"); ret = lt9611uxc_firmware_update(lt9611uxc); if (ret < 0) goto err_disable_regulators; else goto retry; } else { dev_err(dev, "FW version 0, update failed\n"); ret = -EOPNOTSUPP; goto err_disable_regulators; } } else if (ret < 0x40) { dev_info(dev, "FW version 0x%x, HPD not supported\n", ret); } else { lt9611uxc->hpd_supported = true; } lt9611uxc->fw_version = ret; init_waitqueue_head(<9611uxc->wq); INIT_WORK(<9611uxc->work, lt9611uxc_hpd_work); ret = request_threaded_irq(client->irq, NULL, lt9611uxc_irq_thread_handler, IRQF_ONESHOT, "lt9611uxc", lt9611uxc); if (ret) { dev_err(dev, "failed to request irq\n"); goto err_disable_regulators; } i2c_set_clientdata(client, lt9611uxc); lt9611uxc->bridge.funcs = <9611uxc_bridge_funcs; lt9611uxc->bridge.of_node = client->dev.of_node; lt9611uxc->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; if (lt9611uxc->hpd_supported) lt9611uxc->bridge.ops |= DRM_BRIDGE_OP_HPD; lt9611uxc->bridge.type = DRM_MODE_CONNECTOR_HDMIA; drm_bridge_add(<9611uxc->bridge); /* Attach primary DSI */ lt9611uxc->dsi0 = lt9611uxc_attach_dsi(lt9611uxc, lt9611uxc->dsi0_node); if (IS_ERR(lt9611uxc->dsi0)) { ret = PTR_ERR(lt9611uxc->dsi0); goto err_remove_bridge; } /* Attach secondary DSI, if specified */ if (lt9611uxc->dsi1_node) { lt9611uxc->dsi1 = lt9611uxc_attach_dsi(lt9611uxc, lt9611uxc->dsi1_node); if (IS_ERR(lt9611uxc->dsi1)) { ret = PTR_ERR(lt9611uxc->dsi1); goto err_remove_bridge; } } return lt9611uxc_audio_init(dev, lt9611uxc); err_remove_bridge: free_irq(client->irq, lt9611uxc); cancel_work_sync(<9611uxc->work); drm_bridge_remove(<9611uxc->bridge); err_disable_regulators: regulator_bulk_disable(ARRAY_SIZE(lt9611uxc->supplies), lt9611uxc->supplies); err_of_put: of_node_put(lt9611uxc->dsi1_node); of_node_put(lt9611uxc->dsi0_node); return ret; } static void lt9611uxc_remove(struct i2c_client *client) { struct lt9611uxc *lt9611uxc = i2c_get_clientdata(client); free_irq(client->irq, lt9611uxc); cancel_work_sync(<9611uxc->work); lt9611uxc_audio_exit(lt9611uxc); drm_bridge_remove(<9611uxc->bridge); mutex_destroy(<9611uxc->ocm_lock); regulator_bulk_disable(ARRAY_SIZE(lt9611uxc->supplies), lt9611uxc->supplies); of_node_put(lt9611uxc->dsi1_node); of_node_put(lt9611uxc->dsi0_node); } static struct i2c_device_id lt9611uxc_id[] = { { "lontium,lt9611uxc", 0 }, { /* sentinel */ } }; static const struct of_device_id lt9611uxc_match_table[] = { { .compatible = "lontium,lt9611uxc" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, lt9611uxc_match_table); static struct i2c_driver lt9611uxc_driver = { .driver = { .name = "lt9611uxc", .of_match_table = lt9611uxc_match_table, .dev_groups = lt9611uxc_attr_groups, }, .probe = lt9611uxc_probe, .remove = lt9611uxc_remove, .id_table = lt9611uxc_id, }; module_i2c_driver(lt9611uxc_driver); MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>"); MODULE_LICENSE("GPL v2"); MODULE_FIRMWARE(FW_FILE);
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