usb: dwc2: Add debugfs file to show params

Show the core params and hardware params.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/drivers/usb/dwc2/debugfs.c b/drivers/usb/dwc2/debugfs.c
index cad621f02972..57747b0df595 100644
--- a/drivers/usb/dwc2/debugfs.c
+++ b/drivers/usb/dwc2/debugfs.c
@@ -725,6 +725,120 @@ static const struct debugfs_reg32 dwc2_regs[] = {
         dump_register(HCDMAB(15)),
 };
 
+#define print_param(_seq, _ptr, _param) \
+seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param)
+
+#define print_param_hex(_seq, _ptr, _param) \
+seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param)
+
+static int params_show(struct seq_file *seq, void *v)
+{
+        struct dwc2_hsotg *hsotg = seq->private;
+        struct dwc2_core_params *p = &hsotg->params;
+        int i;
+
+        print_param(seq, p, otg_cap);
+        print_param(seq, p, dma_desc_enable);
+        print_param(seq, p, dma_desc_fs_enable);
+        print_param(seq, p, speed);
+        print_param(seq, p, enable_dynamic_fifo);
+        print_param(seq, p, en_multiple_tx_fifo);
+        print_param(seq, p, host_rx_fifo_size);
+        print_param(seq, p, host_nperio_tx_fifo_size);
+        print_param(seq, p, host_perio_tx_fifo_size);
+        print_param(seq, p, max_transfer_size);
+        print_param(seq, p, max_packet_count);
+        print_param(seq, p, host_channels);
+        print_param(seq, p, phy_type);
+        print_param(seq, p, phy_utmi_width);
+        print_param(seq, p, phy_ulpi_ddr);
+        print_param(seq, p, phy_ulpi_ext_vbus);
+        print_param(seq, p, i2c_enable);
+        print_param(seq, p, ulpi_fs_ls);
+        print_param(seq, p, host_support_fs_ls_low_power);
+        print_param(seq, p, host_ls_low_power_phy_clk);
+        print_param(seq, p, ts_dline);
+        print_param(seq, p, reload_ctl);
+        print_param_hex(seq, p, ahbcfg);
+        print_param(seq, p, uframe_sched);
+        print_param(seq, p, external_id_pin_ctl);
+        print_param(seq, p, hibernation);
+        print_param(seq, p, host_dma);
+        print_param(seq, p, g_dma);
+        print_param(seq, p, g_dma_desc);
+        print_param(seq, p, g_rx_fifo_size);
+        print_param(seq, p, g_np_tx_fifo_size);
+
+        for (i = 0; i < MAX_EPS_CHANNELS; i++) {
+                char str[32];
+
+                snprintf(str, 32, "g_tx_fifo_size[%d]", i);
+                seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]);
+        }
+
+        return 0;
+}
+
+static int params_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, params_show, inode->i_private);
+}
+
+static const struct file_operations params_fops = {
+        .owner          = THIS_MODULE,
+        .open           = params_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+static int hw_params_show(struct seq_file *seq, void *v)
+{
+        struct dwc2_hsotg *hsotg = seq->private;
+        struct dwc2_hw_params *hw = &hsotg->hw_params;
+
+        print_param(seq, hw, op_mode);
+        print_param(seq, hw, arch);
+        print_param(seq, hw, dma_desc_enable);
+        print_param(seq, hw, enable_dynamic_fifo);
+        print_param(seq, hw, en_multiple_tx_fifo);
+        print_param(seq, hw, rx_fifo_size);
+        print_param(seq, hw, host_nperio_tx_fifo_size);
+        print_param(seq, hw, dev_nperio_tx_fifo_size);
+        print_param(seq, hw, host_perio_tx_fifo_size);
+        print_param(seq, hw, nperio_tx_q_depth);
+        print_param(seq, hw, host_perio_tx_q_depth);
+        print_param(seq, hw, dev_token_q_depth);
+        print_param(seq, hw, max_transfer_size);
+        print_param(seq, hw, max_packet_count);
+        print_param(seq, hw, host_channels);
+        print_param(seq, hw, hs_phy_type);
+        print_param(seq, hw, fs_phy_type);
+        print_param(seq, hw, i2c_enable);
+        print_param(seq, hw, num_dev_ep);
+        print_param(seq, hw, num_dev_perio_in_ep);
+        print_param(seq, hw, total_fifo_size);
+        print_param(seq, hw, power_optimized);
+        print_param(seq, hw, utmi_phy_data_width);
+        print_param_hex(seq, hw, snpsid);
+        print_param_hex(seq, hw, dev_ep_dirs);
+
+        return 0;
+}
+
+static int hw_params_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, hw_params_show, inode->i_private);
+}
+
+static const struct file_operations hw_params_fops = {
+        .owner          = THIS_MODULE,
+        .open           = hw_params_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
 int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
 {
         int                     ret;
@@ -736,6 +850,19 @@ int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
                 goto err0;
         }
 
+        file = debugfs_create_file("params", 0444,
+                                   hsotg->debug_root,
+                                   hsotg, &params_fops);
+        if (IS_ERR(file))
+                dev_err(hsotg->dev, "%s: failed to create params\n", __func__);
+
+        file = debugfs_create_file("hw_params", 0444,
+                                   hsotg->debug_root,
+                                   hsotg, &hw_params_fops);
+        if (IS_ERR(file))
+                dev_err(hsotg->dev, "%s: failed to create hw_params\n",
+                        __func__);
+
         /* Add gadget debugfs nodes */
         dwc2_hsotg_create_debug(hsotg);