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path: root/drivers/i2c/busses/i2c-designware-platdrv.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-designware-platdrv.c')
-rw-r--r--drivers/i2c/busses/i2c-designware-platdrv.c184
1 files changed, 35 insertions, 149 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index df3dc1e8093e..2d0c7348e491 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -8,7 +8,6 @@
* Copyright (C) 2007 MontaVista Software Inc.
* Copyright (C) 2009 Provigent Ltd.
*/
-#include <linux/acpi.h>
#include <linux/clk-provider.h>
#include <linux/clk.h>
#include <linux/delay.h>
@@ -21,7 +20,6 @@
#include <linux/kernel.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
-#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
@@ -30,7 +28,6 @@
#include <linux/reset.h>
#include <linux/sched.h>
#include <linux/slab.h>
-#include <linux/suspend.h>
#include <linux/units.h>
#include "i2c-designware-core.h"
@@ -40,29 +37,6 @@ static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
return clk_get_rate(dev->clk) / KILO;
}
-#ifdef CONFIG_ACPI
-static const struct acpi_device_id dw_i2c_acpi_match[] = {
- { "INT33C2", 0 },
- { "INT33C3", 0 },
- { "INT3432", 0 },
- { "INT3433", 0 },
- { "INTC10EF", 0 },
- { "80860F41", ACCESS_NO_IRQ_SUSPEND },
- { "808622C1", ACCESS_NO_IRQ_SUSPEND },
- { "AMD0010", ACCESS_INTR_MASK },
- { "AMDI0010", ACCESS_INTR_MASK },
- { "AMDI0019", ACCESS_INTR_MASK | ARBITRATION_SEMAPHORE },
- { "AMDI0510", 0 },
- { "APMC0D0F", 0 },
- { "HISI02A1", 0 },
- { "HISI02A2", 0 },
- { "HISI02A3", 0 },
- { "HYGO0010", ACCESS_INTR_MASK },
- { }
-};
-MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);
-#endif
-
#ifdef CONFIG_OF
#define BT1_I2C_CTL 0x100
#define BT1_I2C_CTL_ADDR_MASK GENMASK(7, 0)
@@ -120,53 +94,11 @@ static int bt1_i2c_request_regs(struct dw_i2c_dev *dev)
dev->map = devm_regmap_init(dev->dev, NULL, dev, &bt1_i2c_cfg);
return PTR_ERR_OR_ZERO(dev->map);
}
-
-#define MSCC_ICPU_CFG_TWI_DELAY 0x0
-#define MSCC_ICPU_CFG_TWI_DELAY_ENABLE BIT(0)
-#define MSCC_ICPU_CFG_TWI_SPIKE_FILTER 0x4
-
-static int mscc_twi_set_sda_hold_time(struct dw_i2c_dev *dev)
-{
- writel((dev->sda_hold_time << 1) | MSCC_ICPU_CFG_TWI_DELAY_ENABLE,
- dev->ext + MSCC_ICPU_CFG_TWI_DELAY);
-
- return 0;
-}
-
-static int dw_i2c_of_configure(struct platform_device *pdev)
-{
- struct dw_i2c_dev *dev = platform_get_drvdata(pdev);
-
- switch (dev->flags & MODEL_MASK) {
- case MODEL_MSCC_OCELOT:
- dev->ext = devm_platform_ioremap_resource(pdev, 1);
- if (!IS_ERR(dev->ext))
- dev->set_sda_hold_time = mscc_twi_set_sda_hold_time;
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-static const struct of_device_id dw_i2c_of_match[] = {
- { .compatible = "snps,designware-i2c", },
- { .compatible = "mscc,ocelot-i2c", .data = (void *)MODEL_MSCC_OCELOT },
- { .compatible = "baikal,bt1-sys-i2c", .data = (void *)MODEL_BAIKAL_BT1 },
- {},
-};
-MODULE_DEVICE_TABLE(of, dw_i2c_of_match);
#else
static int bt1_i2c_request_regs(struct dw_i2c_dev *dev)
{
return -ENODEV;
}
-
-static inline int dw_i2c_of_configure(struct platform_device *pdev)
-{
- return -ENODEV;
-}
#endif
static int txgbe_i2c_request_regs(struct dw_i2c_dev *dev)
@@ -238,11 +170,9 @@ static int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
int i = 0;
int ret;
- ptr = i2c_dw_semaphore_cb_table;
-
dev->semaphore_idx = -1;
- while (ptr->probe) {
+ for (ptr = i2c_dw_semaphore_cb_table; ptr->probe; ptr++) {
ret = ptr->probe(dev);
if (ret) {
/*
@@ -254,7 +184,6 @@ static int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
return ret;
i++;
- ptr++;
continue;
}
@@ -278,7 +207,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
{
struct i2c_adapter *adap;
struct dw_i2c_dev *dev;
- struct i2c_timings *t;
int irq, ret;
irq = platform_get_irq(pdev, 0);
@@ -307,18 +235,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
reset_control_deassert(dev->rst);
- t = &dev->timings;
- i2c_parse_fw_timings(&pdev->dev, t, false);
-
- i2c_dw_adjust_bus_speed(dev);
-
- if (pdev->dev.of_node)
- dw_i2c_of_configure(pdev);
-
- if (has_acpi_companion(&pdev->dev))
- i2c_dw_acpi_configure(&pdev->dev);
-
- ret = i2c_dw_validate_speed(dev);
+ ret = i2c_dw_fw_parse_and_configure(dev);
if (ret)
goto exit_reset;
@@ -346,6 +263,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
goto exit_reset;
if (dev->clk) {
+ struct i2c_timings *t = &dev->timings;
u64 clk_khz;
dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;
@@ -360,8 +278,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
adap->owner = THIS_MODULE;
adap->class = dmi_check_system(dw_i2c_hwmon_class_dmi) ?
I2C_CLASS_HWMON : I2C_CLASS_DEPRECATED;
- ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev));
- adap->dev.of_node = pdev->dev.of_node;
adap->nr = -1;
if (dev->flags & ACCESS_NO_IRQ_SUSPEND) {
@@ -408,7 +324,7 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
i2c_del_adapter(&dev->adapter);
- dev->disable(dev);
+ i2c_dw_disable(dev);
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
@@ -419,66 +335,34 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
reset_control_assert(dev->rst);
}
-static int dw_i2c_plat_prepare(struct device *dev)
-{
- /*
- * If the ACPI companion device object is present for this device, it
- * may be accessed during suspend and resume of other devices via I2C
- * operation regions, so tell the PM core and middle layers to avoid
- * skipping system suspend/resume callbacks for it in that case.
- */
- return !has_acpi_companion(dev);
-}
-
-static int dw_i2c_plat_runtime_suspend(struct device *dev)
-{
- struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
-
- if (i_dev->shared_with_punit)
- return 0;
-
- i_dev->disable(i_dev);
- i2c_dw_prepare_clk(i_dev, false);
-
- return 0;
-}
-
-static int dw_i2c_plat_suspend(struct device *dev)
-{
- struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
-
- i2c_mark_adapter_suspended(&i_dev->adapter);
-
- return dw_i2c_plat_runtime_suspend(dev);
-}
-
-static int dw_i2c_plat_runtime_resume(struct device *dev)
-{
- struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
-
- if (!i_dev->shared_with_punit)
- i2c_dw_prepare_clk(i_dev, true);
-
- i_dev->init(i_dev);
-
- return 0;
-}
-
-static int dw_i2c_plat_resume(struct device *dev)
-{
- struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
-
- dw_i2c_plat_runtime_resume(dev);
- i2c_mark_adapter_resumed(&i_dev->adapter);
-
- return 0;
-}
+static const struct of_device_id dw_i2c_of_match[] = {
+ { .compatible = "snps,designware-i2c", },
+ { .compatible = "mscc,ocelot-i2c", .data = (void *)MODEL_MSCC_OCELOT },
+ { .compatible = "baikal,bt1-sys-i2c", .data = (void *)MODEL_BAIKAL_BT1 },
+ {}
+};
+MODULE_DEVICE_TABLE(of, dw_i2c_of_match);
-static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
- .prepare = pm_sleep_ptr(dw_i2c_plat_prepare),
- LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
- RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend, dw_i2c_plat_runtime_resume, NULL)
+static const struct acpi_device_id dw_i2c_acpi_match[] = {
+ { "80860F41", ACCESS_NO_IRQ_SUSPEND },
+ { "808622C1", ACCESS_NO_IRQ_SUSPEND },
+ { "AMD0010", ACCESS_INTR_MASK },
+ { "AMDI0010", ACCESS_INTR_MASK },
+ { "AMDI0019", ACCESS_INTR_MASK | ARBITRATION_SEMAPHORE },
+ { "AMDI0510", 0 },
+ { "APMC0D0F", 0 },
+ { "HISI02A1", 0 },
+ { "HISI02A2", 0 },
+ { "HISI02A3", 0 },
+ { "HYGO0010", ACCESS_INTR_MASK },
+ { "INT33C2", 0 },
+ { "INT33C3", 0 },
+ { "INT3432", 0 },
+ { "INT3433", 0 },
+ { "INTC10EF", 0 },
+ {}
};
+MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);
static const struct platform_device_id dw_i2c_platform_ids[] = {
{ "i2c_designware" },
@@ -491,9 +375,9 @@ static struct platform_driver dw_i2c_driver = {
.remove_new = dw_i2c_plat_remove,
.driver = {
.name = "i2c_designware",
- .of_match_table = of_match_ptr(dw_i2c_of_match),
- .acpi_match_table = ACPI_PTR(dw_i2c_acpi_match),
- .pm = pm_ptr(&dw_i2c_dev_pm_ops),
+ .of_match_table = dw_i2c_of_match,
+ .acpi_match_table = dw_i2c_acpi_match,
+ .pm = pm_ptr(&i2c_dw_dev_pm_ops),
},
.id_table = dw_i2c_platform_ids,
};
@@ -513,3 +397,5 @@ module_exit(dw_i2c_exit_driver);
MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>");
MODULE_DESCRIPTION("Synopsys DesignWare I2C bus adapter");
MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(I2C_DW);
+MODULE_IMPORT_NS(I2C_DW_COMMON);
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-25 21:32:49 +0000