From ff36b0d953dc4cbc40a72945920ff8e805f1b0da Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Barnab=C3=A1s=20P=C5=91cze?= Date: Wed, 3 Feb 2021 21:56:05 +0000 Subject: [PATCH] platform/x86: ideapad-laptop: rework and create new ACPI helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Create dedicated helper functions for accessing the main ACPI methods: GBMD, SMBC, HALS, SALS; and utilize them. Use `unsigned long` consistently in every ACPI helper wherever possible. Change names to better express purpose. Do not assign values to output parameters in case of failure. Signed-off-by: Barnabás Pőcze Link: https://lore.kernel.org/r/20210203215403.290792-18-pobrn@protonmail.com Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede --- drivers/platform/x86/ideapad-laptop.c | 192 ++++++++++++-------------- 1 file changed, 87 insertions(+), 105 deletions(-) diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index c9ee06b060f7..c95aad42f1e3 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -128,84 +128,78 @@ MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth."); */ #define IDEAPAD_EC_TIMEOUT (200) /* in ms */ -static int read_method_int(acpi_handle handle, const char *method, int *val) +static int eval_int(acpi_handle handle, const char *name, unsigned long *res) { - acpi_status status; unsigned long long result; - - status = acpi_evaluate_integer(handle, (char *)method, NULL, &result); - if (ACPI_FAILURE(status)) { - *val = -1; - return -EIO; - } - *val = result; - return 0; - -} - -static int method_gbmd(acpi_handle handle, unsigned long *ret) -{ - int result, val; - - result = read_method_int(handle, "GBMD", &val); - *ret = val; - return result; -} - -static int method_int1(acpi_handle handle, char *method, int cmd) -{ acpi_status status; - status = acpi_execute_simple_method(handle, method, cmd); + status = acpi_evaluate_integer(handle, (char *)name, NULL, &result); + if (ACPI_FAILURE(status)) + return -EIO; + *res = result; + return 0; +} + +static int exec_simple_method(acpi_handle handle, const char *name, unsigned long arg) +{ + acpi_status status = acpi_execute_simple_method(handle, (char *)name, arg); + return ACPI_FAILURE(status) ? -EIO : 0; } -static int method_dytc(acpi_handle handle, int cmd, int *ret) +static int eval_gbmd(acpi_handle handle, unsigned long *res) +{ + return eval_int(handle, "GBMD", res); +} + +static int exec_smbc(acpi_handle handle, unsigned long arg) +{ + return exec_simple_method(handle, "SMBC", arg); +} + +static int eval_hals(acpi_handle handle, unsigned long *res) +{ + return eval_int(handle, "HALS", res); +} + +static int exec_sals(acpi_handle handle, unsigned long arg) +{ + return exec_simple_method(handle, "SALS", arg); +} + +static int eval_int_with_arg(acpi_handle handle, const char *name, unsigned long arg, unsigned long *res) { - acpi_status status; - unsigned long long result; struct acpi_object_list params; + unsigned long long result; union acpi_object in_obj; + acpi_status status; params.count = 1; params.pointer = &in_obj; in_obj.type = ACPI_TYPE_INTEGER; - in_obj.integer.value = cmd; + in_obj.integer.value = arg; - status = acpi_evaluate_integer(handle, "DYTC", ¶ms, &result); - - if (ACPI_FAILURE(status)) { - *ret = -1; + status = acpi_evaluate_integer(handle, (char *)name, ¶ms, &result); + if (ACPI_FAILURE(status)) return -EIO; - } - *ret = result; + + if (res) + *res = result; + return 0; } -static int method_vpcr(acpi_handle handle, int cmd, int *ret) +static int eval_dytc(acpi_handle handle, unsigned long cmd, unsigned long *res) { - acpi_status status; - unsigned long long result; - struct acpi_object_list params; - union acpi_object in_obj; - - params.count = 1; - params.pointer = &in_obj; - in_obj.type = ACPI_TYPE_INTEGER; - in_obj.integer.value = cmd; - - status = acpi_evaluate_integer(handle, "VPCR", ¶ms, &result); - - if (ACPI_FAILURE(status)) { - *ret = -1; - return -EIO; - } - *ret = result; - return 0; - + return eval_int_with_arg(handle, "DYTC", cmd, res); } -static int method_vpcw(acpi_handle handle, int cmd, int data) +static int eval_vpcr(acpi_handle handle, unsigned long cmd, unsigned long *res) +{ + return eval_int_with_arg(handle, "VPCR", cmd, res); +} + +static int eval_vpcw(acpi_handle handle, unsigned long cmd, unsigned long data) { struct acpi_object_list params; union acpi_object in_obj[2]; @@ -219,17 +213,17 @@ static int method_vpcw(acpi_handle handle, int cmd, int data) in_obj[1].integer.value = data; status = acpi_evaluate_object(handle, "VPCW", ¶ms, NULL); - if (status != AE_OK) + if (ACPI_FAILURE(status)) return -EIO; return 0; } -static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data) +static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *data) { - unsigned long int end_jiffies; - int val, err; + unsigned long end_jiffies, val; + int err; - err = method_vpcw(handle, 1, cmd); + err = eval_vpcw(handle, 1, cmd); if (err) return err; @@ -237,30 +231,25 @@ static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data) while (time_before(jiffies, end_jiffies)) { schedule(); - err = method_vpcr(handle, 1, &val); + err = eval_vpcr(handle, 1, &val); if (err) return err; - if (val == 0) { - err = method_vpcr(handle, 0, &val); - if (err) - return err; - *data = val; - return 0; - } + if (val == 0) + return eval_vpcr(handle, 0, data); } acpi_handle_err(handle, "timeout in %s\n", __func__); return -ETIMEDOUT; } -static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data) +static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long data) { - unsigned long int end_jiffies; - int val, err; + unsigned long end_jiffies, val; + int err; - err = method_vpcw(handle, 0, data); + err = eval_vpcw(handle, 0, data); if (err) return err; - err = method_vpcw(handle, 1, cmd); + err = eval_vpcw(handle, 1, cmd); if (err) return err; @@ -268,7 +257,7 @@ static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data) while (time_before(jiffies, end_jiffies)) { schedule(); - err = method_vpcr(handle, 1, &val); + err = eval_vpcr(handle, 1, &val); if (err) return err; if (val == 0) @@ -316,7 +305,7 @@ static int debugfs_status_show(struct seq_file *s, void *data) value ? "On" : "Off", value); seq_puts(s, "=====================\n"); - if (!method_gbmd(priv->adev->handle, &value)) { + if (!eval_gbmd(priv->adev->handle, &value)) { seq_printf(s, "Conservation mode:\t%s(%lu)\n", test_bit(GBMD_CONSERVATION_STATE_BIT, &value) ? "On" : "Off", value); @@ -495,7 +484,7 @@ static ssize_t conservation_mode_show(struct device *dev, unsigned long result; int err; - err = method_gbmd(priv->adev->handle, &result); + err = eval_gbmd(priv->adev->handle, &result); if (err) return err; return sysfs_emit(buf, "%d\n", !!test_bit(GBMD_CONSERVATION_STATE_BIT, &result)); @@ -513,9 +502,7 @@ static ssize_t conservation_mode_store(struct device *dev, if (ret) return ret; - ret = method_int1(priv->adev->handle, "SBMC", state ? - SMBC_CONSERVATION_ON : - SMBC_CONSERVATION_OFF); + ret = exec_smbc(priv->adev->handle, state ? SMBC_CONSERVATION_ON : SMBC_CONSERVATION_OFF); if (ret) return ret; return count; @@ -528,15 +515,13 @@ static ssize_t fn_lock_show(struct device *dev, char *buf) { struct ideapad_private *priv = dev_get_drvdata(dev); - unsigned long result; - int hals; - int fail = read_method_int(priv->adev->handle, "HALS", &hals); + unsigned long hals; + int fail = eval_hals(priv->adev->handle, &hals); if (fail) return fail; - result = hals; - return sysfs_emit(buf, "%d\n", !!test_bit(HALS_FNLOCK_STATE_BIT, &result)); + return sysfs_emit(buf, "%d\n", !!test_bit(HALS_FNLOCK_STATE_BIT, &hals)); } static ssize_t fn_lock_store(struct device *dev, @@ -551,9 +536,7 @@ static ssize_t fn_lock_store(struct device *dev, if (ret) return ret; - ret = method_int1(priv->adev->handle, "SALS", state ? - SALS_FNLOCK_ON : - SALS_FNLOCK_OFF); + ret = exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF); if (ret) return ret; return count; @@ -697,32 +680,31 @@ int dytc_profile_get(struct platform_profile_handler *pprof, * - enable CQL * If not in CQL mode, just run the command */ -int dytc_cql_command(struct ideapad_private *priv, int command, int *output) +int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd, unsigned long *output) { - int err, cmd_err, dummy; - int cur_funcmode; + int err, cmd_err, cur_funcmode; /* Determine if we are in CQL mode. This alters the commands we do */ - err = method_dytc(priv->adev->handle, DYTC_CMD_GET, output); + err = eval_dytc(priv->adev->handle, DYTC_CMD_GET, output); if (err) return err; cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; /* Check if we're OK to return immediately */ - if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) + if (cmd == DYTC_CMD_GET && cur_funcmode != DYTC_FUNCTION_CQL) return 0; if (cur_funcmode == DYTC_FUNCTION_CQL) { - err = method_dytc(priv->adev->handle, DYTC_DISABLE_CQL, &dummy); + err = eval_dytc(priv->adev->handle, DYTC_DISABLE_CQL, NULL); if (err) return err; } - cmd_err = method_dytc(priv->adev->handle, command, output); + cmd_err = eval_dytc(priv->adev->handle, cmd, output); /* Check return condition after we've restored CQL state */ if (cur_funcmode == DYTC_FUNCTION_CQL) { - err = method_dytc(priv->adev->handle, DYTC_ENABLE_CQL, &dummy); + err = eval_dytc(priv->adev->handle, DYTC_ENABLE_CQL, NULL); if (err) return err; } @@ -739,7 +721,6 @@ int dytc_profile_set(struct platform_profile_handler *pprof, { struct ideapad_dytc_priv *dytc; struct ideapad_private *priv; - int output; int err; dytc = container_of(pprof, struct ideapad_dytc_priv, pprof); @@ -751,7 +732,7 @@ int dytc_profile_set(struct platform_profile_handler *pprof, if (profile == PLATFORM_PROFILE_BALANCED) { /* To get back to balanced mode we just issue a reset command */ - err = method_dytc(priv->adev->handle, DYTC_CMD_RESET, &output); + err = eval_dytc(priv->adev->handle, DYTC_CMD_RESET, NULL); if (err) goto unlock; } else { @@ -764,7 +745,7 @@ int dytc_profile_set(struct platform_profile_handler *pprof, /* Determine if we are in CQL mode. This alters the commands we do */ err = dytc_cql_command(priv, DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), - &output); + NULL); if (err) goto unlock; } @@ -778,8 +759,8 @@ unlock: static void dytc_profile_refresh(struct ideapad_private *priv) { enum platform_profile_option profile; - int output, err; - int perfmode; + unsigned long output; + int err, perfmode; mutex_lock(&priv->dytc->mutex); err = dytc_cql_command(priv, DYTC_CMD_GET, &output); @@ -797,9 +778,10 @@ static void dytc_profile_refresh(struct ideapad_private *priv) static int ideapad_dytc_profile_init(struct ideapad_private *priv) { - int err, output, dytc_version; + int err, dytc_version; + unsigned long output; - err = method_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output); + err = eval_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output); /* For all other errors we can flag the failure */ if (err) return err; @@ -1289,16 +1271,16 @@ static const struct dmi_system_id hw_rfkill_list[] = { static int ideapad_acpi_add(struct platform_device *pdev) { int ret, i; - int cfg; struct ideapad_private *priv; struct acpi_device *adev; acpi_status status; + unsigned long cfg; ret = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev); if (ret) return -ENODEV; - if (read_method_int(adev->handle, "_CFG", &cfg)) + if (eval_int(adev->handle, "_CFG", &cfg)) return -ENODEV; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);