msm-mmrm: Use sysfs for mmrm module
Add sysfs to provide debug variables. Change-Id: I8dc64af4d0a4cc47bbe8dd135c90cda4d7e301ee Signed-off-by: mbao <mbao@codeaurora.org>
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@@ -35,7 +35,7 @@ static int mmrm_sw_vdd_corner[] = {
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};
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};
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#define MMRM_SW_CLIENTS_NUM_MAX 35
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#define MMRM_SW_CLIENTS_NUM_MAX 35
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extern msm_mmrm_enable_throttle_feature;
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extern u8 msm_mmrm_enable_throttle_feature;
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typedef int (*notifier_callback_fn_t)(
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typedef int (*notifier_callback_fn_t)(
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struct mmrm_client_notifier_data *notifier_data);
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struct mmrm_client_notifier_data *notifier_data);
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@@ -8,6 +8,7 @@
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#include <linux/platform_device.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/soc/qcom/msm_mmrm.h>
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#include <linux/soc/qcom/msm_mmrm.h>
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#include <linux/fs.h>
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#include "mmrm_internal.h"
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#include "mmrm_internal.h"
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#include "mmrm_debug.h"
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#include "mmrm_debug.h"
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@@ -28,6 +29,9 @@
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drv_data = (void *) -EPROBE_DEFER; \
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drv_data = (void *) -EPROBE_DEFER; \
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}
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}
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extern int msm_mmrm_debug;
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extern u8 msm_mmrm_enable_throttle_feature;
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extern u8 msm_mmrm_allow_multiple_register;
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struct mmrm_driver_data *drv_data = (void *) -EPROBE_DEFER;
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struct mmrm_driver_data *drv_data = (void *) -EPROBE_DEFER;
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@@ -226,6 +230,119 @@ err_exit:
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}
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}
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EXPORT_SYMBOL(mmrm_client_get_value);
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EXPORT_SYMBOL(mmrm_client_get_value);
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#define MMRM_SYSFS_ENTRY_MAX_LEN 64
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static int sysfs_get_param(const char *buf, u32 *param)
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{
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int base;
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if (buf) {
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if ((buf[1] == 'x') || (buf[1] == 'X'))
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base = 16;
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else
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base = 10;
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if (kstrtou32(buf, base, param) != 0)
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return -EINVAL;
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}
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return 0;
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}
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static ssize_t mmrm_sysfs_debug_get(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int ret;
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ret = scnprintf(buf, MMRM_SYSFS_ENTRY_MAX_LEN, "0x%x\n", msm_mmrm_debug);
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pr_info("%s: 0x%04X\n", __func__, msm_mmrm_debug);
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return ret;
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}
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static ssize_t mmrm_sysfs_debug_set(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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int ret;
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u32 reg_addr;
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ret = sysfs_get_param(buf, ®_addr);
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if (ret == 0)
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msm_mmrm_debug = reg_addr;
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return count;
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}
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static ssize_t mmrm_sysfs_enable_throttle_get(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int ret;
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ret = scnprintf(buf, MMRM_SYSFS_ENTRY_MAX_LEN, "0x%x\n", msm_mmrm_enable_throttle_feature);
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pr_info("%s: 0x%04X\n", __func__, msm_mmrm_enable_throttle_feature);
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return ret;
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}
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static ssize_t mmrm_sysfs_enable_throttle_set(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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u32 reg_addr;
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int ret;
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ret = sysfs_get_param(buf, ®_addr);
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if (ret == 0)
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msm_mmrm_enable_throttle_feature = (u8)reg_addr;
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return count;
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}
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static ssize_t mmrm_sysfs_allow_multiple_get(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int ret;
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ret = scnprintf(buf, MMRM_SYSFS_ENTRY_MAX_LEN, "0x%x\n", msm_mmrm_allow_multiple_register);
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pr_info("%s: 0x%04X\n", __func__, msm_mmrm_allow_multiple_register);
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return ret;
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}
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static ssize_t mmrm_sysfs_allow_multiple_set(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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u32 reg_addr;
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int ret;
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ret = sysfs_get_param(buf, ®_addr);
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if (ret == 0)
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msm_mmrm_allow_multiple_register = (u8)reg_addr;
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return count;
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}
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static DEVICE_ATTR(debug, 0644,
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mmrm_sysfs_debug_get,
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mmrm_sysfs_debug_set);
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static DEVICE_ATTR(enable_throttle_feature, 0644,
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mmrm_sysfs_enable_throttle_get,
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mmrm_sysfs_enable_throttle_set);
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static DEVICE_ATTR(allow_multiple_register, 0644,
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mmrm_sysfs_allow_multiple_get,
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mmrm_sysfs_allow_multiple_set);
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static struct attribute *mmrm_fs_attrs[] = {
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&dev_attr_debug.attr,
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&dev_attr_enable_throttle_feature.attr,
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&dev_attr_allow_multiple_register.attr,
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NULL,
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};
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static struct attribute_group mmrm_fs_attrs_group = {
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.attrs = mmrm_fs_attrs,
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};
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static int msm_mmrm_probe_init(struct platform_device *pdev)
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static int msm_mmrm_probe_init(struct platform_device *pdev)
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{
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{
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int rc = 0;
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int rc = 0;
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@@ -266,6 +383,11 @@ static int msm_mmrm_probe_init(struct platform_device *pdev)
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goto err_mmrm_init;
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goto err_mmrm_init;
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}
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}
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if (sysfs_create_group(&pdev->dev.kobj, &mmrm_fs_attrs_group)) {
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d_mpr_e("%s: failed to create sysfs\n",
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__func__);
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}
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return rc;
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return rc;
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err_mmrm_init:
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err_mmrm_init:
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@@ -310,6 +432,7 @@ static int msm_mmrm_remove(struct platform_device *pdev)
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return -EINVAL;
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return -EINVAL;
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}
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}
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sysfs_remove_group(&pdev->dev.kobj, &mmrm_fs_attrs_group);
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msm_mmrm_debugfs_deinit(drv_data->debugfs_root);
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msm_mmrm_debugfs_deinit(drv_data->debugfs_root);
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mmrm_deinit(drv_data);
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mmrm_deinit(drv_data);
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mmrm_free_platform_resources(drv_data);
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mmrm_free_platform_resources(drv_data);
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