diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-cht-wc.c | 46 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-nvidia-gpu.c | 4 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-s3c2410.c | 72 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core-acpi.c | 13 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 98 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core-of.c | 66 |
7 files changed, 152 insertions, 158 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index a7bfddf08fa7..d4975444a32d 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -723,11 +723,11 @@ config I2C_IMX_LPI2C will be called i2c-imx-lpi2c. config I2C_IOP3XX - tristate "Intel IOPx3xx and IXP4xx on-chip I2C interface" - depends on ARCH_IOP32X || ARCH_IXP4XX || COMPILE_TEST + tristate "Intel IXP4xx on-chip I2C interface" + depends on ARCH_IXP4XX || COMPILE_TEST help Say Y here if you want to use the IIC bus controller on - the Intel IOPx3xx I/O Processors or IXP4xx Network Processors. + the Intel IXP4xx Network Processors. This driver can also be built as a module. If so, the module will be called i2c-iop3xx. @@ -874,7 +874,7 @@ config I2C_OCORES config I2C_OMAP tristate "OMAP I2C adapter" depends on ARCH_OMAP || ARCH_K3 || COMPILE_TEST - default y if MACH_OMAP_H3 || MACH_OMAP_OSK + default MACH_OMAP_OSK help If you say yes to this option, support will be included for the I2C interface on the Texas Instruments OMAP1/2 family of processors. @@ -1010,8 +1010,7 @@ config I2C_RZV2M config I2C_S3C2410 tristate "S3C/Exynos I2C Driver" - depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || \ - ARCH_S5PV210 || COMPILE_TEST + depends on ARCH_EXYNOS || ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST help Say Y here to include support for I2C controller in the Samsung SoCs (S3C, S5Pv210, Exynos). diff --git a/drivers/i2c/busses/i2c-cht-wc.c b/drivers/i2c/busses/i2c-cht-wc.c index 190abdc46dd3..2b2c3d090089 100644 --- a/drivers/i2c/busses/i2c-cht-wc.c +++ b/drivers/i2c/busses/i2c-cht-wc.c @@ -380,6 +380,49 @@ static struct i2c_board_info lenovo_yogabook1_board_info = { .platform_data = &bq2589x_pdata, }; +/********** Lenovo Yogabook YT3-X90F charger settings **********/ +static const char * const lenovo_yt3_bq25892_1_suppliers[] = { "cht_wcove_pwrsrc" }; + +/* + * bq25892 charger settings for the round li-ion cells in the hinge, + * this is the main / biggest battery. + */ +static const struct property_entry lenovo_yt3_bq25892_1_props[] = { + PROPERTY_ENTRY_STRING_ARRAY("supplied-from", lenovo_yt3_bq25892_1_suppliers), + PROPERTY_ENTRY_STRING("linux,secondary-charger-name", "bq25890-charger-0"), + PROPERTY_ENTRY_U32("linux,iinlim-percentage", 60), + PROPERTY_ENTRY_U32("linux,pump-express-vbus-max", 12000000), + PROPERTY_ENTRY_BOOL("linux,skip-reset"), + /* + * The firmware sets everything to the defaults, leading to a low(ish) + * charge-current and battery-voltage of 2048mA resp 4.2V. Use the + * Android values instead of "linux,read-back-settings" to fix this. + */ + PROPERTY_ENTRY_U32("ti,charge-current", 3072000), + PROPERTY_ENTRY_U32("ti,battery-regulation-voltage", 4352000), + PROPERTY_ENTRY_U32("ti,termination-current", 128000), + PROPERTY_ENTRY_U32("ti,precharge-current", 128000), + PROPERTY_ENTRY_U32("ti,minimum-sys-voltage", 3700000), + PROPERTY_ENTRY_BOOL("ti,use-ilim-pin"), + /* Set 5V boost current-limit to 1.2A (MAX/POR values are 2.45A/1.4A) */ + PROPERTY_ENTRY_U32("ti,boost-voltage", 4998000), + PROPERTY_ENTRY_U32("ti,boost-max-current", 1200000), + { } +}; + +static const struct software_node lenovo_yt3_bq25892_1_node = { + .properties = lenovo_yt3_bq25892_1_props, +}; + +/* bq25892 charger for the round li-ion cells in the hinge */ +static struct i2c_board_info lenovo_yoga_tab3_board_info = { + .type = "bq25892", + .addr = 0x6b, + .dev_name = "bq25892_1", + .swnode = &lenovo_yt3_bq25892_1_node, + .platform_data = &bq2589x_pdata, +}; + static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev) { struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent); @@ -459,6 +502,9 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev) case INTEL_CHT_WC_LENOVO_YOGABOOK1: board_info = &lenovo_yogabook1_board_info; break; + case INTEL_CHT_WC_LENOVO_YT3_X90: + board_info = &lenovo_yoga_tab3_board_info; + break; default: dev_warn(&pdev->dev, "Unknown model, not instantiating charger device\n"); break; diff --git a/drivers/i2c/busses/i2c-nvidia-gpu.c b/drivers/i2c/busses/i2c-nvidia-gpu.c index 12e330cd7635..a8b99e7f6262 100644 --- a/drivers/i2c/busses/i2c-nvidia-gpu.c +++ b/drivers/i2c/busses/i2c-nvidia-gpu.c @@ -259,8 +259,8 @@ static const struct pci_device_id gpu_i2c_ids[] = { MODULE_DEVICE_TABLE(pci, gpu_i2c_ids); static const struct property_entry ccgx_props[] = { - /* Use FW built for NVIDIA (nv) only */ - PROPERTY_ENTRY_U16("ccgx,firmware-build", ('n' << 8) | 'v'), + /* Use FW built for NVIDIA GPU only */ + PROPERTY_ENTRY_STRING("firmware-name", "nvidia,gpu"), { } }; diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 36dab9cd208c..45e9df81345a 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -116,9 +116,6 @@ struct s3c24xx_i2c { struct s3c2410_platform_i2c *pdata; struct gpio_desc *gpios[2]; struct pinctrl *pctrl; -#if defined(CONFIG_ARM_S3C24XX_CPUFREQ) - struct notifier_block freq_transition; -#endif struct regmap *sysreg; unsigned int sys_i2c_cfg; }; @@ -885,65 +882,6 @@ static int s3c24xx_i2c_clockrate(struct s3c24xx_i2c *i2c, unsigned int *got) return 0; } -#if defined(CONFIG_ARM_S3C24XX_CPUFREQ) - -#define freq_to_i2c(_n) container_of(_n, struct s3c24xx_i2c, freq_transition) - -static int s3c24xx_i2c_cpufreq_transition(struct notifier_block *nb, - unsigned long val, void *data) -{ - struct s3c24xx_i2c *i2c = freq_to_i2c(nb); - unsigned int got; - int delta_f; - int ret; - - delta_f = clk_get_rate(i2c->clk) - i2c->clkrate; - - /* if we're post-change and the input clock has slowed down - * or at pre-change and the clock is about to speed up, then - * adjust our clock rate. <0 is slow, >0 speedup. - */ - - if ((val == CPUFREQ_POSTCHANGE && delta_f < 0) || - (val == CPUFREQ_PRECHANGE && delta_f > 0)) { - i2c_lock_bus(&i2c->adap, I2C_LOCK_ROOT_ADAPTER); - ret = s3c24xx_i2c_clockrate(i2c, &got); - i2c_unlock_bus(&i2c->adap, I2C_LOCK_ROOT_ADAPTER); - - if (ret < 0) - dev_err(i2c->dev, "cannot find frequency (%d)\n", ret); - else - dev_info(i2c->dev, "setting freq %d\n", got); - } - - return 0; -} - -static inline int s3c24xx_i2c_register_cpufreq(struct s3c24xx_i2c *i2c) -{ - i2c->freq_transition.notifier_call = s3c24xx_i2c_cpufreq_transition; - - return cpufreq_register_notifier(&i2c->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -} - -static inline void s3c24xx_i2c_deregister_cpufreq(struct s3c24xx_i2c *i2c) -{ - cpufreq_unregister_notifier(&i2c->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -} - -#else -static inline int s3c24xx_i2c_register_cpufreq(struct s3c24xx_i2c *i2c) -{ - return 0; -} - -static inline void s3c24xx_i2c_deregister_cpufreq(struct s3c24xx_i2c *i2c) -{ -} -#endif - #ifdef CONFIG_OF static int s3c24xx_i2c_parse_dt_gpio(struct s3c24xx_i2c *i2c) { @@ -1152,13 +1090,6 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) } } - ret = s3c24xx_i2c_register_cpufreq(i2c); - if (ret < 0) { - dev_err(&pdev->dev, "failed to register cpufreq notifier\n"); - clk_unprepare(i2c->clk); - return ret; - } - /* * Note, previous versions of the driver used i2c_add_adapter() * to add the bus at any number. We now pass the bus number via @@ -1175,7 +1106,6 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) ret = i2c_add_numbered_adapter(&i2c->adap); if (ret < 0) { pm_runtime_disable(&pdev->dev); - s3c24xx_i2c_deregister_cpufreq(i2c); clk_unprepare(i2c->clk); return ret; } @@ -1192,8 +1122,6 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); - s3c24xx_i2c_deregister_cpufreq(i2c); - i2c_del_adapter(&i2c->adap); return 0; diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index 4dd777cc0c89..d6037a328669 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -442,18 +442,7 @@ EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle); static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev) { - struct device *dev; - struct i2c_client *client; - - dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev); - if (!dev) - return NULL; - - client = i2c_verify_client(dev); - if (!client) - put_device(dev); - - return client; + return i2c_find_device_by_fwnode(acpi_fwnode_handle(adev)); } static int i2c_acpi_notify(struct notifier_block *nb, unsigned long value, diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 087e480b624c..b47e255fc6f1 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1012,6 +1012,35 @@ void i2c_unregister_device(struct i2c_client *client) } EXPORT_SYMBOL_GPL(i2c_unregister_device); +/** + * i2c_find_device_by_fwnode() - find an i2c_client for the fwnode + * @fwnode: &struct fwnode_handle corresponding to the &struct i2c_client + * + * Look up and return the &struct i2c_client corresponding to the @fwnode. + * If no client can be found, or @fwnode is NULL, this returns NULL. + * + * The user must call put_device(&client->dev) once done with the i2c client. + */ +struct i2c_client *i2c_find_device_by_fwnode(struct fwnode_handle *fwnode) +{ + struct i2c_client *client; + struct device *dev; + + if (!fwnode) + return NULL; + + dev = bus_find_device_by_fwnode(&i2c_bus_type, fwnode); + if (!dev) + return NULL; + + client = i2c_verify_client(dev); + if (!client) + put_device(dev); + + return client; +} +EXPORT_SYMBOL(i2c_find_device_by_fwnode); + static const struct i2c_device_id dummy_id[] = { { "dummy", 0 }, @@ -1761,6 +1790,75 @@ int devm_i2c_add_adapter(struct device *dev, struct i2c_adapter *adapter) } EXPORT_SYMBOL_GPL(devm_i2c_add_adapter); +static int i2c_dev_or_parent_fwnode_match(struct device *dev, const void *data) +{ + if (dev_fwnode(dev) == data) + return 1; + + if (dev->parent && dev_fwnode(dev->parent) == data) + return 1; + + return 0; +} + +/** + * i2c_find_adapter_by_fwnode() - find an i2c_adapter for the fwnode + * @fwnode: &struct fwnode_handle corresponding to the &struct i2c_adapter + * + * Look up and return the &struct i2c_adapter corresponding to the @fwnode. + * If no adapter can be found, or @fwnode is NULL, this returns NULL. + * + * The user must call put_device(&adapter->dev) once done with the i2c adapter. + */ +struct i2c_adapter *i2c_find_adapter_by_fwnode(struct fwnode_handle *fwnode) +{ + struct i2c_adapter *adapter; + struct device *dev; + + if (!fwnode) + return NULL; + + dev = bus_find_device(&i2c_bus_type, NULL, fwnode, + i2c_dev_or_parent_fwnode_match); + if (!dev) + return NULL; + + adapter = i2c_verify_adapter(dev); + if (!adapter) + put_device(dev); + + return adapter; +} +EXPORT_SYMBOL(i2c_find_adapter_by_fwnode); + +/** + * i2c_get_adapter_by_fwnode() - find an i2c_adapter for the fwnode + * @fwnode: &struct fwnode_handle corresponding to the &struct i2c_adapter + * + * Look up and return the &struct i2c_adapter corresponding to the @fwnode, + * and increment the adapter module's use count. If no adapter can be found, + * or @fwnode is NULL, this returns NULL. + * + * The user must call i2c_put_adapter(adapter) once done with the i2c adapter. + * Note that this is different from i2c_find_adapter_by_node(). + */ +struct i2c_adapter *i2c_get_adapter_by_fwnode(struct fwnode_handle *fwnode) +{ + struct i2c_adapter *adapter; + + adapter = i2c_find_adapter_by_fwnode(fwnode); + if (!adapter) + return NULL; + + if (!try_module_get(adapter->owner)) { + put_device(&adapter->dev); + adapter = NULL; + } + + return adapter; +} +EXPORT_SYMBOL(i2c_get_adapter_by_fwnode); + static void i2c_parse_timing(struct device *dev, char *prop_name, u32 *cur_val_p, u32 def_val, bool use_def) { diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c index 3ed74aa4b44b..bce6b796e04c 100644 --- a/drivers/i2c/i2c-core-of.c +++ b/drivers/i2c/i2c-core-of.c @@ -113,72 +113,6 @@ void of_i2c_register_devices(struct i2c_adapter *adap) of_node_put(bus); } -static int of_dev_or_parent_node_match(struct device *dev, const void *data) -{ - if (dev->of_node == data) - return 1; - - if (dev->parent) - return dev->parent->of_node == data; - - return 0; -} - -/* must call put_device() when done with returned i2c_client device */ -struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) -{ - struct device *dev; - struct i2c_client *client; - - dev = bus_find_device_by_of_node(&i2c_bus_type, node); - if (!dev) - return NULL; - - client = i2c_verify_client(dev); - if (!client) - put_device(dev); - - return client; -} -EXPORT_SYMBOL(of_find_i2c_device_by_node); - -/* must call put_device() when done with returned i2c_adapter device */ -struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) -{ - struct device *dev; - struct i2c_adapter *adapter; - - dev = bus_find_device(&i2c_bus_type, NULL, node, - of_dev_or_parent_node_match); - if (!dev) - return NULL; - - adapter = i2c_verify_adapter(dev); - if (!adapter) - put_device(dev); - - return adapter; -} -EXPORT_SYMBOL(of_find_i2c_adapter_by_node); - -/* must call i2c_put_adapter() when done with returned i2c_adapter device */ -struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node *node) -{ - struct i2c_adapter *adapter; - - adapter = of_find_i2c_adapter_by_node(node); - if (!adapter) - return NULL; - - if (!try_module_get(adapter->owner)) { - put_device(&adapter->dev); - adapter = NULL; - } - - return adapter; -} -EXPORT_SYMBOL(of_get_i2c_adapter_by_node); - static const struct of_device_id* i2c_of_match_device_sysfs(const struct of_device_id *matches, struct i2c_client *client) |