diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/ti-sn65dsi86.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-sn65dsi86.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index b77a52d05061..0a580957c8cf 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -1,9 +1,11 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2018, The Linux Foundation. All rights reserved. + * datasheet: http://www.ti.com/lit/ds/symlink/sn65dsi86.pdf */ #include <linux/clk.h> +#include <linux/debugfs.h> #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/iopoll.h> @@ -90,6 +92,7 @@ struct ti_sn_bridge { struct drm_dp_aux aux; struct drm_bridge bridge; struct drm_connector connector; + struct dentry *debugfs; struct device_node *host_node; struct mipi_dsi_device *dsi; struct clk *refclk; @@ -155,6 +158,42 @@ static const struct dev_pm_ops ti_sn_bridge_pm_ops = { SET_RUNTIME_PM_OPS(ti_sn_bridge_suspend, ti_sn_bridge_resume, NULL) }; +static int status_show(struct seq_file *s, void *data) +{ + struct ti_sn_bridge *pdata = s->private; + unsigned int reg, val; + + seq_puts(s, "STATUS REGISTERS:\n"); + + pm_runtime_get_sync(pdata->dev); + + /* IRQ Status Registers, see Table 31 in datasheet */ + for (reg = 0xf0; reg <= 0xf8; reg++) { + regmap_read(pdata->regmap, reg, &val); + seq_printf(s, "[0x%02x] = 0x%08x\n", reg, val); + } + + pm_runtime_put(pdata->dev); + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(status); + +static void ti_sn_debugfs_init(struct ti_sn_bridge *pdata) +{ + pdata->debugfs = debugfs_create_dir(dev_name(pdata->dev), NULL); + + debugfs_create_file("status", 0600, pdata->debugfs, pdata, + &status_fops); +} + +static void ti_sn_debugfs_remove(struct ti_sn_bridge *pdata) +{ + debugfs_remove_recursive(pdata->debugfs); + pdata->debugfs = NULL; +} + /* Connector funcs */ static struct ti_sn_bridge * connector_to_ti_sn_bridge(struct drm_connector *connector) @@ -275,8 +314,7 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge) /* TODO: setting to 4 lanes always for now */ 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_EOT_PACKET | MIPI_DSI_MODE_VIDEO_HSE; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO; /* check if continuous dsi clock is required or not */ pm_runtime_get_sync(pdata->dev); @@ -731,6 +769,8 @@ static int ti_sn_bridge_probe(struct i2c_client *client, drm_bridge_add(&pdata->bridge); + ti_sn_debugfs_init(pdata); + return 0; } @@ -741,6 +781,8 @@ static int ti_sn_bridge_remove(struct i2c_client *client) if (!pdata) return -EINVAL; + ti_sn_debugfs_remove(pdata); + of_node_put(pdata->host_node); pm_runtime_disable(pdata->dev); |