[PATCH v3 04/16] drm: sti: add I2C client driver for HDMI

Benjamin Gaignard
2014-05-20T13:57:06Z

Add I2C client driver to retrieve EDID.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
---
drivers/gpu/drm/sti/Makefile | 3 ++-
drivers/gpu/drm/sti/sti_ddc.c | 56 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 58 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/sti/sti_ddc.c

diff --git a/drivers/gpu/drm/sti/Makefile b/drivers/gpu/drm/sti/Makefile
index 5295fc7..6c474eb 100644
--- a/drivers/gpu/drm/sti/Makefile
+++ b/drivers/gpu/drm/sti/Makefile
@@ -2,7 +2,8 @@ ccflags-y := -Iinclude/drm

stidrm-y := sti_hdmi.o \
sti_hdmi_tx3g0c55phy.o \
- sti_hdmi_tx3g4c28phy.o
+ sti_hdmi_tx3g4c28phy.o \
+ sti_ddc.o

obj-$(CONFIG_VTAC_STI) += sti_vtac_tx.o sti_vtac_rx.o
obj-$(CONFIG_VTG_STI) += sti_vtg.o sti_vtg_utils.o
diff --git a/drivers/gpu/drm/sti/sti_ddc.c b/drivers/gpu/drm/sti/sti_ddc.c
new file mode 100644
index 0000000..147a704
--- /dev/null
+++ b/drivers/gpu/drm/sti/sti_ddc.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2013
+ * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+#include <drm/drmP.h>
+
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+
+#include "sti_hdmi.h"
+
+static int sti_hdmi_ddc_probe(struct i2c_client *client,
+ const struct i2c_device_id *dev_id)
+{
+ sti_hdmi_attach_ddc_client(client);
+
+ DRM_INFO("%s attached %s into i2c adapter successfully\n",
+ __func__, client->name);
+
+ return 0;
+}
+
+static int sti_hdmi_ddc_remove(struct i2c_client *client)
+{
+ DRM_INFO("%s detached %s from i2c adapter successfully\n",
+ __func__, client->name);
+
+ return 0;
+}
+
+static struct i2c_device_id sti_ddc_idtable[] = {
+ {"sti-hdmiddc", 0},
+ {},
+};
+
+static struct of_device_id hdmiddc_match_types[] = {
+ {
+ .compatible = "st,sti-hdmiddc",
+ }, {
+ /* end node */
+ }
+};
+
+struct i2c_driver ddc_driver = {
+ .driver = {
+ .name = "sti-hdmiddc",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(hdmiddc_match_types),
+ },
+ .id_table = sti_ddc_idtable,
+ .probe = sti_hdmi_ddc_probe,
+ .remove = sti_hdmi_ddc_remove,
+ .command = NULL,
+};
--
1.9.1