change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/usb/gadget/function/uvc_configfs.c
..
..
@@ -7,7 +7,7 @@
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7
  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
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8
  *		http://www.samsung.com
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  *
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- * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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+ * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
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11
  */
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12
 
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 #include <linux/sort.h>
..
..
@@ -506,10 +506,67 @@
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 UVCG_DEFAULT_OUTPUT_ATTR(b_terminal_id, bTerminalID, 8);
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 UVCG_DEFAULT_OUTPUT_ATTR(w_terminal_type, wTerminalType, 16);
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 UVCG_DEFAULT_OUTPUT_ATTR(b_assoc_terminal, bAssocTerminal, 8);
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-UVCG_DEFAULT_OUTPUT_ATTR(b_source_id, bSourceID, 8);
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 UVCG_DEFAULT_OUTPUT_ATTR(i_terminal, iTerminal, 8);
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510
 
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 #undef UVCG_DEFAULT_OUTPUT_ATTR
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+
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+static ssize_t uvcg_default_output_b_source_id_show(struct config_item *item,
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+						    char *page)
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+{
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+	struct config_group *group = to_config_group(item);
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+	struct f_uvc_opts *opts;
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+	struct config_item *opts_item;
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+	struct mutex *su_mutex = &group->cg_subsys->su_mutex;
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+	struct uvc_output_terminal_descriptor *cd;
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+	int result;
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+
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+	mutex_lock(su_mutex); /* for navigating configfs hierarchy */
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+
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+	opts_item = group->cg_item.ci_parent->ci_parent->
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+			ci_parent->ci_parent;
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+	opts = to_f_uvc_opts(opts_item);
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+	cd = &opts->uvc_output_terminal;
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+
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+	mutex_lock(&opts->lock);
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+	result = sprintf(page, "%u\n", le8_to_cpu(cd->bSourceID));
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+	mutex_unlock(&opts->lock);
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+
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+	mutex_unlock(su_mutex);
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+
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+	return result;
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+}
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+
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+static ssize_t uvcg_default_output_b_source_id_store(struct config_item *item,
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+						     const char *page, size_t len)
541
+{
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+	struct config_group *group = to_config_group(item);
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+	struct f_uvc_opts *opts;
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+	struct config_item *opts_item;
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+	struct mutex *su_mutex = &group->cg_subsys->su_mutex;
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+	struct uvc_output_terminal_descriptor *cd;
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+	int result;
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+	u8 num;
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+
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+	result = kstrtou8(page, 0, &num);
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+	if (result)
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+		return result;
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+
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+	mutex_lock(su_mutex); /* for navigating configfs hierarchy */
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+
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+	opts_item = group->cg_item.ci_parent->ci_parent->
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+			ci_parent->ci_parent;
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+	opts = to_f_uvc_opts(opts_item);
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+	cd = &opts->uvc_output_terminal;
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+
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+	mutex_lock(&opts->lock);
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+	cd->bSourceID = num;
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+	mutex_unlock(&opts->lock);
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+
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+	mutex_unlock(su_mutex);
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+
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+	return len;
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+}
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+UVC_ATTR(uvcg_default_output_, b_source_id, bSourceID);
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570
 
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 static struct configfs_attribute *uvcg_default_output_attrs[] = {
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572
 	&uvcg_default_output_attr_b_terminal_id,
..
..
@@ -1607,10 +1664,6 @@
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 	if (ret)							\
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 		goto end;						\
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 									\
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-	if (num > 255) {						\
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-		ret = -EINVAL;						\
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-		goto end;						\
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-	}								\
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1667
 	u->desc.aname = num;						\
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 	ret = len;							\
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 end:									\
..
..
@@ -1804,10 +1857,6 @@
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 	if (ret)							\
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 		goto end;						\
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 									\
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-	if (num > 255) {						\
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-		ret = -EINVAL;						\
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-		goto end;						\
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-	}								\
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 	u->desc.aname = num;						\
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 	ret = len;							\
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 end:									\
..
..
@@ -2774,11 +2823,15 @@
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2823
 UVCG_OPTS_ATTR(streaming_interval, streaming_interval, 16);
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 UVCG_OPTS_ATTR(streaming_maxpacket, streaming_maxpacket, 3072);
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 UVCG_OPTS_ATTR(streaming_maxburst, streaming_maxburst, 15);
2777
-UVCG_OPTS_ATTR(uvc_num_request, uvc_num_request, UVC_MAX_NUM_REQUESTS);
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2826
 UVCG_OPTS_ATTR(pm_qos_latency, pm_qos_latency, PM_QOS_LATENCY_ANY);
2827
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_NO_GKI)
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+UVCG_OPTS_ATTR(uvc_num_request, uvc_num_request, 64);
2829
+UVCG_OPTS_ATTR(uvc_zero_copy, uvc_zero_copy, 1);
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+#endif
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 #undef UVCG_OPTS_ATTR
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2833
 
2834
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_NO_GKI)
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2835
 static ssize_t f_uvc_opts_device_name_show(struct config_item *item,
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2836
 					   char *page)
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 {
..
..
@@ -2832,15 +2885,62 @@
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2885
 	return ret;
2833
2886
 }
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 UVC_ATTR(f_uvc_opts_, device_name, device_name);
2888
+#endif
2889
+
2890
+#define UVCG_OPTS_STRING_ATTR(cname, aname)				\
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+static ssize_t f_uvc_opts_string_##cname##_show(struct config_item *item,\
2892
+					 char *page)			\
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+{									\
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+	struct f_uvc_opts *opts = to_f_uvc_opts(item);			\
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+	int result;							\
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+									\
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+	mutex_lock(&opts->lock);					\
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+	result = snprintf(page, sizeof(opts->aname), "%s", opts->aname);\
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+	mutex_unlock(&opts->lock);					\
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+									\
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+	return result;							\
2902
+}									\
2903
+									\
2904
+static ssize_t f_uvc_opts_string_##cname##_store(struct config_item *item,\
2905
+					  const char *page, size_t len)	\
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+{									\
2907
+	struct f_uvc_opts *opts = to_f_uvc_opts(item);			\
2908
+	int size = min(sizeof(opts->aname), len + 1);			\
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+	int ret = 0;							\
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+									\
2911
+	mutex_lock(&opts->lock);					\
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+	if (opts->refcnt) {						\
2913
+		ret = -EBUSY;						\
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+		goto end;						\
2915
+	}								\
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+									\
2917
+	ret = strscpy(opts->aname, page, size);				\
2918
+	if (ret == -E2BIG)						\
2919
+		ret = size - 1;						\
2920
+									\
2921
+end:									\
2922
+	mutex_unlock(&opts->lock);					\
2923
+	return ret;							\
2924
+}									\
2925
+									\
2926
+UVC_ATTR(f_uvc_opts_string_, cname, aname)
2927
+
2928
+UVCG_OPTS_STRING_ATTR(function_name, function_name);
2929
+
2930
+#undef UVCG_OPTS_STRING_ATTR
2835
2931
 
2836
2932
 static struct configfs_attribute *uvc_attrs[] = {
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2933
 	&f_uvc_opts_attr_streaming_bulk,
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2934
 	&f_uvc_opts_attr_streaming_interval,
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2935
 	&f_uvc_opts_attr_streaming_maxpacket,
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 	&f_uvc_opts_attr_streaming_maxburst,
2841
-	&f_uvc_opts_attr_uvc_num_request,
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2937
 	&f_uvc_opts_attr_pm_qos_latency,
2938
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_NO_GKI)
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2939
 	&f_uvc_opts_attr_device_name,
2940
+	&f_uvc_opts_attr_uvc_num_request,
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+	&f_uvc_opts_attr_uvc_zero_copy,
2942
+#endif
2943
+	&f_uvc_opts_string_attr_function_name,
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2944
 	NULL,
2845
2945
 };
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2946