From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Wolfram Sang <wsa@kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org
Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Ajay Gupta <ajayg@nvidia.com>
Subject: [PATCH v1 01/11] i2c: Introduce common module to instantiate CCGx UCSI
Date: Tue, 7 Dec 2021 21:21:49 +0200 [thread overview]
Message-ID: <20211207192159.41383-1-andriy.shevchenko@linux.intel.com> (raw)
Introduce a common module to provide an API to instantiate UCSI device
for Cypress CCGx Type-C controller. Individual bus drivers need to select
this one on demand.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/i2c/busses/Kconfig | 7 +++++++
drivers/i2c/busses/Makefile | 3 +++
drivers/i2c/busses/i2c-ccgx-ucsi.c | 27 +++++++++++++++++++++++++++
drivers/i2c/busses/i2c-ccgx-ucsi.h | 11 +++++++++++
4 files changed, 48 insertions(+)
create mode 100644 drivers/i2c/busses/i2c-ccgx-ucsi.c
create mode 100644 drivers/i2c/busses/i2c-ccgx-ucsi.h
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index df89cb809330..0fb2caf7498c 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -9,6 +9,13 @@ menu "I2C Hardware Bus support"
comment "PC SMBus host controller drivers"
depends on PCI
+config I2C_CCGX_UCSI
+ tristate
+ help
+ A common module to provide an API to instantiate UCSI device
+ for Cypress CCGx Type-C controller. Individual bus drivers
+ need to select this one on demand.
+
config I2C_ALI1535
tristate "ALI 1535"
depends on PCI
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 1d00dce77098..79405cb5d600 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -6,6 +6,9 @@
# ACPI drivers
obj-$(CONFIG_I2C_SCMI) += i2c-scmi.o
+# Auxiliary I2C/SMBus modules
+obj-$(CONFIG_I2C_CCGX_UCSI) += i2c-ccgx-ucsi.o
+
# PC SMBus host controller drivers
obj-$(CONFIG_I2C_ALI1535) += i2c-ali1535.o
obj-$(CONFIG_I2C_ALI1563) += i2c-ali1563.o
diff --git a/drivers/i2c/busses/i2c-ccgx-ucsi.c b/drivers/i2c/busses/i2c-ccgx-ucsi.c
new file mode 100644
index 000000000000..141c3d1ef752
--- /dev/null
+++ b/drivers/i2c/busses/i2c-ccgx-ucsi.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Instantiate UCSI device for Cypress CCGx Type-C controller.
+ * Derived from i2c-designware-pcidrv.c and i2c-nvidia-gpu.c.
+ */
+
+#include <linux/i2c.h>
+#include <linux/export.h>
+#include <linux/string.h>
+
+#include "i2c-ccgx-ucsi.h"
+
+struct software_node;
+
+struct i2c_client *i2c_new_ccgx_ucsi(struct i2c_adapter *adapter, int irq,
+ const struct software_node *swnode)
+{
+ struct i2c_board_info info = {};
+
+ strscpy(info.type, "ccgx-ucsi", sizeof(info.type));
+ info.addr = 0x08;
+ info.irq = irq;
+ info.swnode = swnode;
+
+ return i2c_new_client_device(adapter, &info);
+}
+EXPORT_SYMBOL_GPL(i2c_new_ccgx_ucsi);
diff --git a/drivers/i2c/busses/i2c-ccgx-ucsi.h b/drivers/i2c/busses/i2c-ccgx-ucsi.h
new file mode 100644
index 000000000000..739ac7a4b117
--- /dev/null
+++ b/drivers/i2c/busses/i2c-ccgx-ucsi.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __I2C_CCGX_UCSI_H_
+#define __I2C_CCGX_UCSI_H_
+
+struct i2c_adapter;
+struct i2c_client;
+struct software_node;
+
+struct i2c_client *i2c_new_ccgx_ucsi(struct i2c_adapter *adapter, int irq,
+ const struct software_node *swnode);
+#endif /* __I2C_CCGX_UCSI_H_ */
--
2.33.0
next reply other threads:[~2021-12-07 19:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 19:21 Andy Shevchenko [this message]
2021-12-07 19:21 ` [PATCH v1 02/11] i2c: designware-pci: Switch to use i2c_new_ccgx_ucsi() Andy Shevchenko
2021-12-07 19:21 ` [PATCH v1 03/11] i2c: designware-pci: Use temporary variable for struct device Andy Shevchenko
2021-12-08 12:35 ` Jarkko Nikula
2021-12-07 19:21 ` [PATCH v1 04/11] i2c: designware-pci: Convert to use dev_err_probe() Andy Shevchenko
2021-12-08 12:21 ` Jarkko Nikula
2021-12-07 19:21 ` [PATCH v1 05/11] i2c: designware-pci: use __maybe_unused for PM functions Andy Shevchenko
2021-12-08 12:31 ` Jarkko Nikula
2021-12-07 19:21 ` [PATCH v1 06/11] i2c: designware-pci: Fix to change data types of hcnt and lcnt parameters Andy Shevchenko
2021-12-08 12:29 ` Jarkko Nikula
2021-12-07 19:21 ` [PATCH v1 07/11] i2c: designware-pci: Group MODULE_*() macros Andy Shevchenko
2021-12-08 12:30 ` Jarkko Nikula
2021-12-07 19:21 ` [PATCH v1 08/11] i2c: designware-pci: Add a note about struct dw_scl_sda_cfg usage Andy Shevchenko
2021-12-08 12:29 ` Jarkko Nikula
2021-12-07 19:21 ` [PATCH v1 09/11] i2c: nvidia-gpu: Switch to use i2c_new_ccgx_ucsi() Andy Shevchenko
2021-12-07 19:21 ` [PATCH v1 10/11] i2c: nvidia-gpu: Use temporary variable for struct device Andy Shevchenko
2021-12-07 19:21 ` [PATCH v1 11/11] i2c: nvidia-gpu: Convert to use dev_err_probe() Andy Shevchenko
2021-12-08 12:29 ` [PATCH v1 01/11] i2c: Introduce common module to instantiate CCGx UCSI Jarkko Nikula
2021-12-13 18:00 ` Andy Shevchenko
2021-12-15 13:50 ` Shah, Nehal-bakulchandra
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