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phy: mediatek: tphy: add debugfs files
These debugfs files are mainly used to make eye diagram test easier, especially helpful to do HQA test for a new IC without efuse enabled. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20230513092218.21139-2-chunfeng.yun@mediatek.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Chunfeng Yun
Vinod Koul
parent
9169477206
commit
e45076007e
1 changed files with 356 additions and 0 deletions
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@ -7,6 +7,7 @@
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#include <dt-bindings/phy/phy.h>
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#include <linux/clk.h>
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#include <linux/debugfs.h>
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#include <linux/delay.h>
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#include <linux/iopoll.h>
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#include <linux/mfd/syscon.h>
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@ -264,6 +265,8 @@
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#define TPHY_CLKS_CNT 2
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#define USER_BUF_LEN(count) min_t(size_t, 8, (count))
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enum mtk_phy_version {
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MTK_PHY_V1 = 1,
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MTK_PHY_V2,
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@ -336,6 +339,358 @@ struct mtk_tphy {
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int src_coef; /* coefficient for slew rate calibrate */
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};
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#if IS_ENABLED(CONFIG_DEBUG_FS)
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enum u2_phy_params {
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U2P_EYE_VRT = 0,
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U2P_EYE_TERM,
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U2P_EFUSE_EN,
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U2P_EFUSE_INTR,
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U2P_DISCTH,
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U2P_PRE_EMPHASIS,
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};
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enum u3_phy_params {
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U3P_EFUSE_EN = 0,
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U3P_EFUSE_INTR,
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U3P_EFUSE_TX_IMP,
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U3P_EFUSE_RX_IMP,
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};
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static const char *const u2_phy_files[] = {
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[U2P_EYE_VRT] = "vrt",
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[U2P_EYE_TERM] = "term",
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[U2P_EFUSE_EN] = "efuse",
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[U2P_EFUSE_INTR] = "intr",
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[U2P_DISCTH] = "discth",
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[U2P_PRE_EMPHASIS] = "preemph",
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};
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static const char *const u3_phy_files[] = {
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[U3P_EFUSE_EN] = "efuse",
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[U3P_EFUSE_INTR] = "intr",
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[U3P_EFUSE_TX_IMP] = "tx-imp",
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[U3P_EFUSE_RX_IMP] = "rx-imp",
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};
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static int u2_phy_params_show(struct seq_file *sf, void *unused)
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{
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struct mtk_phy_instance *inst = sf->private;
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const char *fname = file_dentry(sf->file)->d_iname;
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struct u2phy_banks *u2_banks = &inst->u2_banks;
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void __iomem *com = u2_banks->com;
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u32 max = 0;
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u32 tmp = 0;
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u32 val = 0;
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int ret;
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ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname);
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if (ret < 0)
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return ret;
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switch (ret) {
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case U2P_EYE_VRT:
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tmp = readl(com + U3P_USBPHYACR1);
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val = FIELD_GET(PA1_RG_VRT_SEL, tmp);
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max = FIELD_MAX(PA1_RG_VRT_SEL);
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break;
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case U2P_EYE_TERM:
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tmp = readl(com + U3P_USBPHYACR1);
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val = FIELD_GET(PA1_RG_TERM_SEL, tmp);
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max = FIELD_MAX(PA1_RG_TERM_SEL);
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break;
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case U2P_EFUSE_EN:
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if (u2_banks->misc) {
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tmp = readl(u2_banks->misc + U3P_MISC_REG1);
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max = 1;
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}
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val = !!(tmp & MR1_EFUSE_AUTO_LOAD_DIS);
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break;
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case U2P_EFUSE_INTR:
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tmp = readl(com + U3P_USBPHYACR1);
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val = FIELD_GET(PA1_RG_INTR_CAL, tmp);
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max = FIELD_MAX(PA1_RG_INTR_CAL);
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break;
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case U2P_DISCTH:
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tmp = readl(com + U3P_USBPHYACR6);
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val = FIELD_GET(PA6_RG_U2_DISCTH, tmp);
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max = FIELD_MAX(PA6_RG_U2_DISCTH);
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break;
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case U2P_PRE_EMPHASIS:
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tmp = readl(com + U3P_USBPHYACR6);
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val = FIELD_GET(PA6_RG_U2_PRE_EMP, tmp);
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max = FIELD_MAX(PA6_RG_U2_PRE_EMP);
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break;
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default:
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seq_printf(sf, "invalid, %d\n", ret);
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break;
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}
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seq_printf(sf, "%s : %d [0, %d]\n", fname, val, max);
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return 0;
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}
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static int u2_phy_params_open(struct inode *inode, struct file *file)
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{
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return single_open(file, u2_phy_params_show, inode->i_private);
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}
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static ssize_t u2_phy_params_write(struct file *file, const char __user *ubuf,
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size_t count, loff_t *ppos)
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{
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const char *fname = file_dentry(file)->d_iname;
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struct seq_file *sf = file->private_data;
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struct mtk_phy_instance *inst = sf->private;
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struct u2phy_banks *u2_banks = &inst->u2_banks;
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void __iomem *com = u2_banks->com;
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ssize_t rc;
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u32 val;
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int ret;
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rc = kstrtouint_from_user(ubuf, USER_BUF_LEN(count), 0, &val);
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if (rc)
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return rc;
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ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname);
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if (ret < 0)
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return (ssize_t)ret;
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switch (ret) {
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case U2P_EYE_VRT:
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mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_VRT_SEL, val);
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break;
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case U2P_EYE_TERM:
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mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_TERM_SEL, val);
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break;
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case U2P_EFUSE_EN:
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if (u2_banks->misc)
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mtk_phy_update_field(u2_banks->misc + U3P_MISC_REG1,
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MR1_EFUSE_AUTO_LOAD_DIS, !!val);
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break;
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case U2P_EFUSE_INTR:
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mtk_phy_update_field(com + U3P_USBPHYACR1, PA1_RG_INTR_CAL, val);
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break;
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case U2P_DISCTH:
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mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_DISCTH, val);
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break;
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case U2P_PRE_EMPHASIS:
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mtk_phy_update_field(com + U3P_USBPHYACR6, PA6_RG_U2_PRE_EMP, val);
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break;
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default:
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break;
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}
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return count;
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}
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static const struct file_operations u2_phy_fops = {
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.open = u2_phy_params_open,
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.write = u2_phy_params_write,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static void u2_phy_dbgfs_files_create(struct mtk_phy_instance *inst)
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{
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u32 count = ARRAY_SIZE(u2_phy_files);
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int i;
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for (i = 0; i < count; i++)
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debugfs_create_file(u2_phy_files[i], 0644, inst->phy->debugfs,
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inst, &u2_phy_fops);
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}
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static int u3_phy_params_show(struct seq_file *sf, void *unused)
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{
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struct mtk_phy_instance *inst = sf->private;
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const char *fname = file_dentry(sf->file)->d_iname;
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struct u3phy_banks *u3_banks = &inst->u3_banks;
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u32 val = 0;
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u32 max = 0;
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u32 tmp;
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int ret;
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ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname);
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if (ret < 0)
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return ret;
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switch (ret) {
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case U3P_EFUSE_EN:
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tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RSV);
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val = !!(tmp & P3D_RG_EFUSE_AUTO_LOAD_DIS);
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max = 1;
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break;
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case U3P_EFUSE_INTR:
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tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG0);
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val = FIELD_GET(P3A_RG_IEXT_INTR, tmp);
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max = FIELD_MAX(P3A_RG_IEXT_INTR);
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break;
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case U3P_EFUSE_TX_IMP:
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tmp = readl(u3_banks->phyd + U3P_U3_PHYD_IMPCAL0);
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val = FIELD_GET(P3D_RG_TX_IMPEL, tmp);
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max = FIELD_MAX(P3D_RG_TX_IMPEL);
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break;
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case U3P_EFUSE_RX_IMP:
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tmp = readl(u3_banks->phyd + U3P_U3_PHYD_IMPCAL1);
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val = FIELD_GET(P3D_RG_RX_IMPEL, tmp);
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max = FIELD_MAX(P3D_RG_RX_IMPEL);
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break;
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default:
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seq_printf(sf, "invalid, %d\n", ret);
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break;
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}
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seq_printf(sf, "%s : %d [0, %d]\n", fname, val, max);
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return 0;
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}
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static int u3_phy_params_open(struct inode *inode, struct file *file)
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{
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return single_open(file, u3_phy_params_show, inode->i_private);
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}
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static ssize_t u3_phy_params_write(struct file *file, const char __user *ubuf,
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size_t count, loff_t *ppos)
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{
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const char *fname = file_dentry(file)->d_iname;
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struct seq_file *sf = file->private_data;
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struct mtk_phy_instance *inst = sf->private;
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struct u3phy_banks *u3_banks = &inst->u3_banks;
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void __iomem *phyd = u3_banks->phyd;
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ssize_t rc;
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u32 val;
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int ret;
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rc = kstrtouint_from_user(ubuf, USER_BUF_LEN(count), 0, &val);
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if (rc)
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return rc;
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ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname);
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if (ret < 0)
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return (ssize_t)ret;
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switch (ret) {
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case U3P_EFUSE_EN:
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mtk_phy_update_field(phyd + U3P_U3_PHYD_RSV,
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P3D_RG_EFUSE_AUTO_LOAD_DIS, !!val);
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break;
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case U3P_EFUSE_INTR:
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mtk_phy_update_field(u3_banks->phya + U3P_U3_PHYA_REG0,
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P3A_RG_IEXT_INTR, val);
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break;
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case U3P_EFUSE_TX_IMP:
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mtk_phy_update_field(phyd + U3P_U3_PHYD_IMPCAL0, P3D_RG_TX_IMPEL, val);
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mtk_phy_set_bits(phyd + U3P_U3_PHYD_IMPCAL0, P3D_RG_FORCE_TX_IMPEL);
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break;
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case U3P_EFUSE_RX_IMP:
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mtk_phy_update_field(phyd + U3P_U3_PHYD_IMPCAL1, P3D_RG_RX_IMPEL, val);
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mtk_phy_set_bits(phyd + U3P_U3_PHYD_IMPCAL1, P3D_RG_FORCE_RX_IMPEL);
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break;
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default:
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break;
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}
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return count;
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}
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static const struct file_operations u3_phy_fops = {
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.open = u3_phy_params_open,
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.write = u3_phy_params_write,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static void u3_phy_dbgfs_files_create(struct mtk_phy_instance *inst)
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{
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u32 count = ARRAY_SIZE(u3_phy_files);
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int i;
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for (i = 0; i < count; i++)
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debugfs_create_file(u3_phy_files[i], 0644, inst->phy->debugfs,
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inst, &u3_phy_fops);
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}
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static int phy_type_show(struct seq_file *sf, void *unused)
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{
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struct mtk_phy_instance *inst = sf->private;
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const char *type;
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switch (inst->type) {
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case PHY_TYPE_USB2:
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type = "USB2";
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break;
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case PHY_TYPE_USB3:
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type = "USB3";
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break;
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case PHY_TYPE_PCIE:
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type = "PCIe";
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break;
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case PHY_TYPE_SGMII:
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type = "SGMII";
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break;
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case PHY_TYPE_SATA:
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type = "SATA";
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break;
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default:
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type = "";
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}
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seq_printf(sf, "%s\n", type);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(phy_type);
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/* these files will be removed when phy is released by phy core */
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static void phy_debugfs_init(struct mtk_phy_instance *inst)
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{
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debugfs_create_file("type", 0444, inst->phy->debugfs, inst, &phy_type_fops);
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switch (inst->type) {
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case PHY_TYPE_USB2:
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u2_phy_dbgfs_files_create(inst);
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break;
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case PHY_TYPE_USB3:
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case PHY_TYPE_PCIE:
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u3_phy_dbgfs_files_create(inst);
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break;
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default:
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break;
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}
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}
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#else
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static void phy_debugfs_init(struct mtk_phy_instance *inst)
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{}
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#endif
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static void hs_slew_rate_calibrate(struct mtk_tphy *tphy,
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struct mtk_phy_instance *instance)
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{
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@ -1140,6 +1495,7 @@ static struct phy *mtk_phy_xlate(struct device *dev,
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phy_parse_property(tphy, instance);
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phy_type_set(instance);
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phy_debugfs_init(instance);
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return instance->phy;
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}
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