From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/drivers/clk/clk-si5341.c | 242 +++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 215 insertions(+), 27 deletions(-)
diff --git a/kernel/drivers/clk/clk-si5341.c b/kernel/drivers/clk/clk-si5341.c
index 382a061..4dea29f 100644
--- a/kernel/drivers/clk/clk-si5341.c
+++ b/kernel/drivers/clk/clk-si5341.c
@@ -19,6 +19,7 @@
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
@@ -59,6 +60,7 @@
struct clk_si5341_output {
struct clk_hw hw;
struct clk_si5341 *data;
+ struct regulator *vddo_reg;
u8 index;
};
#define to_clk_si5341_output(_hw) \
@@ -84,6 +86,7 @@
struct clk_si5341_output_config {
u8 out_format_drv_bits;
u8 out_cm_ampl_bits;
+ u8 vdd_sel_bits;
bool synth_master;
bool always_on;
};
@@ -135,6 +138,8 @@
#define SI5341_OUT_MUX_SEL(output) (SI5341_OUT_CONFIG(output) + 3)
#define SI5341_OUT_R_REG(output) \
((output)->data->reg_rdiv_offset[(output)->index])
+
+#define SI5341_OUT_MUX_VDD_SEL_MASK 0x38
/* Synthesize N divider */
#define SI5341_SYNTH_N_NUM(x) (0x0302 + ((x) * 11))
@@ -1250,11 +1255,11 @@
.volatile_table = &si5341_regmap_volatile,
};
-static int si5341_dt_parse_dt(struct i2c_client *client,
- struct clk_si5341_output_config *config)
+static int si5341_dt_parse_dt(struct clk_si5341 *data,
+ struct clk_si5341_output_config *config)
{
struct device_node *child;
- struct device_node *np = client->dev.of_node;
+ struct device_node *np = data->i2c_client->dev.of_node;
u32 num;
u32 val;
@@ -1263,13 +1268,13 @@
for_each_child_of_node(np, child) {
if (of_property_read_u32(child, "reg", &num)) {
- dev_err(&client->dev, "missing reg property of %s\n",
+ dev_err(&data->i2c_client->dev, "missing reg property of %s\n",
child->name);
goto put_child;
}
if (num >= SI5341_MAX_NUM_OUTPUTS) {
- dev_err(&client->dev, "invalid clkout %d\n", num);
+ dev_err(&data->i2c_client->dev, "invalid clkout %d\n", num);
goto put_child;
}
@@ -1288,7 +1293,7 @@
config[num].out_format_drv_bits |= 0xc0;
break;
default:
- dev_err(&client->dev,
+ dev_err(&data->i2c_client->dev,
"invalid silabs,format %u for %u\n",
val, num);
goto put_child;
@@ -1301,7 +1306,7 @@
if (!of_property_read_u32(child, "silabs,common-mode", &val)) {
if (val > 0xf) {
- dev_err(&client->dev,
+ dev_err(&data->i2c_client->dev,
"invalid silabs,common-mode %u\n",
val);
goto put_child;
@@ -1312,7 +1317,7 @@
if (!of_property_read_u32(child, "silabs,amplitude", &val)) {
if (val > 0xf) {
- dev_err(&client->dev,
+ dev_err(&data->i2c_client->dev,
"invalid silabs,amplitude %u\n",
val);
goto put_child;
@@ -1329,6 +1334,34 @@
config[num].always_on =
of_property_read_bool(child, "always-on");
+
+ config[num].vdd_sel_bits = 0x08;
+ if (data->clk[num].vddo_reg) {
+ int vdd = regulator_get_voltage(data->clk[num].vddo_reg);
+
+ switch (vdd) {
+ case 3300000:
+ config[num].vdd_sel_bits |= 0 << 4;
+ break;
+ case 1800000:
+ config[num].vdd_sel_bits |= 1 << 4;
+ break;
+ case 2500000:
+ config[num].vdd_sel_bits |= 2 << 4;
+ break;
+ default:
+ dev_err(&data->i2c_client->dev,
+ "unsupported vddo voltage %d for %s\n",
+ vdd, child->name);
+ goto put_child;
+ }
+ } else {
+ /* chip seems to default to 2.5V when not set */
+ dev_warn(&data->i2c_client->dev,
+ "no regulator set, defaulting vdd_sel to 2.5V for %s\n",
+ child->name);
+ config[num].vdd_sel_bits |= 2 << 4;
+ }
}
return 0;
@@ -1417,6 +1450,94 @@
return res;
}
+static ssize_t input_present_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct clk_si5341 *data = dev_get_drvdata(dev);
+ u32 status;
+ int res = regmap_read(data->regmap, SI5341_STATUS, &status);
+
+ if (res < 0)
+ return res;
+ res = !(status & SI5341_STATUS_LOSREF);
+ return snprintf(buf, PAGE_SIZE, "%d\n", res);
+}
+static DEVICE_ATTR_RO(input_present);
+
+static ssize_t input_present_sticky_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct clk_si5341 *data = dev_get_drvdata(dev);
+ u32 status;
+ int res = regmap_read(data->regmap, SI5341_STATUS_STICKY, &status);
+
+ if (res < 0)
+ return res;
+ res = !(status & SI5341_STATUS_LOSREF);
+ return snprintf(buf, PAGE_SIZE, "%d\n", res);
+}
+static DEVICE_ATTR_RO(input_present_sticky);
+
+static ssize_t pll_locked_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct clk_si5341 *data = dev_get_drvdata(dev);
+ u32 status;
+ int res = regmap_read(data->regmap, SI5341_STATUS, &status);
+
+ if (res < 0)
+ return res;
+ res = !(status & SI5341_STATUS_LOL);
+ return snprintf(buf, PAGE_SIZE, "%d\n", res);
+}
+static DEVICE_ATTR_RO(pll_locked);
+
+static ssize_t pll_locked_sticky_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct clk_si5341 *data = dev_get_drvdata(dev);
+ u32 status;
+ int res = regmap_read(data->regmap, SI5341_STATUS_STICKY, &status);
+
+ if (res < 0)
+ return res;
+ res = !(status & SI5341_STATUS_LOL);
+ return snprintf(buf, PAGE_SIZE, "%d\n", res);
+}
+static DEVICE_ATTR_RO(pll_locked_sticky);
+
+static ssize_t clear_sticky_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct clk_si5341 *data = dev_get_drvdata(dev);
+ long val;
+
+ if (kstrtol(buf, 10, &val))
+ return -EINVAL;
+ if (val) {
+ int res = regmap_write(data->regmap, SI5341_STATUS_STICKY, 0);
+
+ if (res < 0)
+ return res;
+ }
+ return count;
+}
+static DEVICE_ATTR_WO(clear_sticky);
+
+static const struct attribute *si5341_attributes[] = {
+ &dev_attr_input_present.attr,
+ &dev_attr_input_present_sticky.attr,
+ &dev_attr_pll_locked.attr,
+ &dev_attr_pll_locked_sticky.attr,
+ &dev_attr_clear_sticky.attr,
+ NULL
+};
+
static int si5341_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -1424,7 +1545,7 @@
struct clk_init_data init;
struct clk *input;
const char *root_clock_name;
- const char *synth_clock_names[SI5341_NUM_SYNTH];
+ const char *synth_clock_names[SI5341_NUM_SYNTH] = { NULL };
int err;
unsigned int i;
struct clk_si5341_output_config config[SI5341_MAX_NUM_OUTPUTS];
@@ -1454,9 +1575,33 @@
}
}
- err = si5341_dt_parse_dt(client, config);
+ for (i = 0; i < SI5341_MAX_NUM_OUTPUTS; ++i) {
+ char reg_name[10];
+
+ snprintf(reg_name, sizeof(reg_name), "vddo%d", i);
+ data->clk[i].vddo_reg = devm_regulator_get_optional(
+ &client->dev, reg_name);
+ if (IS_ERR(data->clk[i].vddo_reg)) {
+ err = PTR_ERR(data->clk[i].vddo_reg);
+ data->clk[i].vddo_reg = NULL;
+ if (err == -ENODEV)
+ continue;
+ goto cleanup;
+ } else {
+ err = regulator_enable(data->clk[i].vddo_reg);
+ if (err) {
+ dev_err(&client->dev,
+ "failed to enable %s regulator: %d\n",
+ reg_name, err);
+ data->clk[i].vddo_reg = NULL;
+ goto cleanup;
+ }
+ }
+ }
+
+ err = si5341_dt_parse_dt(data, config);
if (err)
- return err;
+ goto cleanup;
if (of_property_read_string(client->dev.of_node, "clock-output-names",
&init.name))
@@ -1464,21 +1609,23 @@
root_clock_name = init.name;
data->regmap = devm_regmap_init_i2c(client, &si5341_regmap_config);
- if (IS_ERR(data->regmap))
- return PTR_ERR(data->regmap);
+ if (IS_ERR(data->regmap)) {
+ err = PTR_ERR(data->regmap);
+ goto cleanup;
+ }
i2c_set_clientdata(client, data);
err = si5341_probe_chip_id(data);
if (err < 0)
- return err;
+ goto cleanup;
if (of_property_read_bool(client->dev.of_node, "silabs,reprogram")) {
initialization_required = true;
} else {
err = si5341_is_programmed_already(data);
if (err < 0)
- return err;
+ goto cleanup;
initialization_required = !err;
}
@@ -1487,11 +1634,11 @@
/* Populate the regmap cache in preparation for "cache only" */
err = si5341_read_settings(data);
if (err < 0)
- return err;
+ goto cleanup;
err = si5341_send_preamble(data);
if (err < 0)
- return err;
+ goto cleanup;
/*
* We intend to send all 'final' register values in a single
@@ -1504,19 +1651,19 @@
err = si5341_write_multiple(data, si5341_reg_defaults,
ARRAY_SIZE(si5341_reg_defaults));
if (err < 0)
- return err;
+ goto cleanup;
}
/* Input must be up and running at this point */
err = si5341_clk_select_active_input(data);
if (err < 0)
- return err;
+ goto cleanup;
if (initialization_required) {
/* PLL configuration is required */
err = si5341_initialize_pll(data);
if (err < 0)
- return err;
+ goto cleanup;
}
/* Register the PLL */
@@ -1529,7 +1676,7 @@
err = devm_clk_hw_register(&client->dev, &data->hw);
if (err) {
dev_err(&client->dev, "clock registration failed\n");
- return err;
+ goto cleanup;
}
init.num_parents = 1;
@@ -1538,6 +1685,10 @@
for (i = 0; i < data->num_synth; ++i) {
synth_clock_names[i] = devm_kasprintf(&client->dev, GFP_KERNEL,
"%s.N%u", client->dev.of_node->name, i);
+ if (!synth_clock_names[i]) {
+ err = -ENOMEM;
+ goto free_clk_names;
+ }
init.name = synth_clock_names[i];
data->synth[i].index = i;
data->synth[i].data = data;
@@ -1546,6 +1697,7 @@
if (err) {
dev_err(&client->dev,
"synth N%u registration failed\n", i);
+ goto free_clk_names;
}
}
@@ -1555,6 +1707,10 @@
for (i = 0; i < data->num_outputs; ++i) {
init.name = kasprintf(GFP_KERNEL, "%s.%d",
client->dev.of_node->name, i);
+ if (!init.name) {
+ err = -ENOMEM;
+ goto free_clk_names;
+ }
init.flags = config[i].synth_master ? CLK_SET_RATE_PARENT : 0;
data->clk[i].index = i;
data->clk[i].data = data;
@@ -1566,13 +1722,17 @@
regmap_write(data->regmap,
SI5341_OUT_CM(&data->clk[i]),
config[i].out_cm_ampl_bits);
+ regmap_update_bits(data->regmap,
+ SI5341_OUT_MUX_SEL(&data->clk[i]),
+ SI5341_OUT_MUX_VDD_SEL_MASK,
+ config[i].vdd_sel_bits);
}
err = devm_clk_hw_register(&client->dev, &data->clk[i].hw);
kfree(init.name); /* clock framework made a copy of the name */
if (err) {
dev_err(&client->dev,
"output %u registration failed\n", i);
- return err;
+ goto free_clk_names;
}
if (config[i].always_on)
clk_prepare(data->clk[i].hw.clk);
@@ -1582,7 +1742,7 @@
data);
if (err) {
dev_err(&client->dev, "unable to add clk provider\n");
- return err;
+ goto free_clk_names;
}
if (initialization_required) {
@@ -1590,11 +1750,11 @@
regcache_cache_only(data->regmap, false);
err = regcache_sync(data->regmap);
if (err < 0)
- return err;
+ goto free_clk_names;
err = si5341_finalize_defaults(data);
if (err < 0)
- return err;
+ goto free_clk_names;
}
/* wait for device to report input clock present and PLL lock */
@@ -1603,19 +1763,46 @@
10000, 250000);
if (err) {
dev_err(&client->dev, "Error waiting for input clock or PLL lock\n");
- return err;
+ goto free_clk_names;
}
/* clear sticky alarm bits from initialization */
err = regmap_write(data->regmap, SI5341_STATUS_STICKY, 0);
if (err) {
dev_err(&client->dev, "unable to clear sticky status\n");
- return err;
+ goto free_clk_names;
}
+ err = sysfs_create_files(&client->dev.kobj, si5341_attributes);
+ if (err)
+ dev_err(&client->dev, "unable to create sysfs files\n");
+
+free_clk_names:
/* Free the names, clk framework makes copies */
for (i = 0; i < data->num_synth; ++i)
devm_kfree(&client->dev, (void *)synth_clock_names[i]);
+
+cleanup:
+ if (err) {
+ for (i = 0; i < SI5341_MAX_NUM_OUTPUTS; ++i) {
+ if (data->clk[i].vddo_reg)
+ regulator_disable(data->clk[i].vddo_reg);
+ }
+ }
+ return err;
+}
+
+static int si5341_remove(struct i2c_client *client)
+{
+ struct clk_si5341 *data = i2c_get_clientdata(client);
+ int i;
+
+ sysfs_remove_files(&client->dev.kobj, si5341_attributes);
+
+ for (i = 0; i < SI5341_MAX_NUM_OUTPUTS; ++i) {
+ if (data->clk[i].vddo_reg)
+ regulator_disable(data->clk[i].vddo_reg);
+ }
return 0;
}
@@ -1646,6 +1833,7 @@
.of_match_table = clk_si5341_of_match,
},
.probe = si5341_probe,
+ .remove = si5341_remove,
.id_table = si5341_id,
};
module_i2c_driver(si5341_driver);
--
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