generic: 5.15: qca8k: backport code split patch

Backport upstream code split patch for qca8k needed for ipq40xx target
to correctly implement a DSA driver.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

1 files changed, 135 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/771-v6.0-04-net-dsa-qca8k-move-qca8k-read-write-rmw-and-reg-tabl.patch b/target/linux/generic/backport-5.15/771-v6.0-04-net-dsa-qca8k-move-qca8k-read-write-rmw-and-reg-tabl.patch
new file mode 100644
index 0000000000..012ab85474
--- /dev/null
+++ b/target/linux/generic/backport-5.15/771-v6.0-04-net-dsa-qca8k-move-qca8k-read-write-rmw-and-reg-tabl.patch
@@ -0,0 +1,135 @@
+From d5f901eab2e9dfed1095995dfc98f231f4fd2971 Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Wed, 27 Jul 2022 13:35:13 +0200
+Subject: [PATCH 04/14] net: dsa: qca8k: move qca8k read/write/rmw and reg
+ table to common code
+
+The same reg table and read/write/rmw function are used by drivers
+based on qca8k family switch.
+Move them to common code to make it accessible also by other drivers.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/dsa/qca/qca8k-8xxx.c   | 42 ------------------------------
+ drivers/net/dsa/qca/qca8k-common.c | 38 +++++++++++++++++++++++++++
+ drivers/net/dsa/qca/qca8k.h        |  6 +++++
+ 3 files changed, 44 insertions(+), 42 deletions(-)
+
+--- a/drivers/net/dsa/qca/qca8k-8xxx.c
++++ b/drivers/net/dsa/qca/qca8k-8xxx.c
+@@ -133,24 +133,6 @@ qca8k_set_page(struct qca8k_priv *priv,
+ 	return 0;
+ }
+ 
+-static int
+-qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val)
+-{
+-	return regmap_read(priv->regmap, reg, val);
+-}
+-
+-static int
+-qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
+-{
+-	return regmap_write(priv->regmap, reg, val);
+-}
+-
+-static int
+-qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val)
+-{
+-	return regmap_update_bits(priv->regmap, reg, mask, write_val);
+-}
+-
+ static void qca8k_rw_reg_ack_handler(struct dsa_switch *ds, struct sk_buff *skb)
+ {
+ 	struct qca8k_mgmt_eth_data *mgmt_eth_data;
+@@ -483,30 +465,6 @@ exit:
+ 	return ret;
+ }
+ 
+-static const struct regmap_range qca8k_readable_ranges[] = {
+-	regmap_reg_range(0x0000, 0x00e4), /* Global control */
+-	regmap_reg_range(0x0100, 0x0168), /* EEE control */
+-	regmap_reg_range(0x0200, 0x0270), /* Parser control */
+-	regmap_reg_range(0x0400, 0x0454), /* ACL */
+-	regmap_reg_range(0x0600, 0x0718), /* Lookup */
+-	regmap_reg_range(0x0800, 0x0b70), /* QM */
+-	regmap_reg_range(0x0c00, 0x0c80), /* PKT */
+-	regmap_reg_range(0x0e00, 0x0e98), /* L3 */
+-	regmap_reg_range(0x1000, 0x10ac), /* MIB - Port0 */
+-	regmap_reg_range(0x1100, 0x11ac), /* MIB - Port1 */
+-	regmap_reg_range(0x1200, 0x12ac), /* MIB - Port2 */
+-	regmap_reg_range(0x1300, 0x13ac), /* MIB - Port3 */
+-	regmap_reg_range(0x1400, 0x14ac), /* MIB - Port4 */
+-	regmap_reg_range(0x1500, 0x15ac), /* MIB - Port5 */
+-	regmap_reg_range(0x1600, 0x16ac), /* MIB - Port6 */
+-
+-};
+-
+-static const struct regmap_access_table qca8k_readable_table = {
+-	.yes_ranges = qca8k_readable_ranges,
+-	.n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges),
+-};
+-
+ static struct regmap_config qca8k_regmap_config = {
+ 	.reg_bits = 16,
+ 	.val_bits = 32,
+--- a/drivers/net/dsa/qca/qca8k-common.c
++++ b/drivers/net/dsa/qca/qca8k-common.c
+@@ -61,3 +61,41 @@ const struct qca8k_mib_desc ar8327_mib[]
+ 	MIB_DESC(1, 0xa8, "RXUnicast"),
+ 	MIB_DESC(1, 0xac, "TXUnicast"),
+ };
++
++int qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val)
++{
++	return regmap_read(priv->regmap, reg, val);
++}
++
++int qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val)
++{
++	return regmap_write(priv->regmap, reg, val);
++}
++
++int qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val)
++{
++	return regmap_update_bits(priv->regmap, reg, mask, write_val);
++}
++
++static const struct regmap_range qca8k_readable_ranges[] = {
++	regmap_reg_range(0x0000, 0x00e4), /* Global control */
++	regmap_reg_range(0x0100, 0x0168), /* EEE control */
++	regmap_reg_range(0x0200, 0x0270), /* Parser control */
++	regmap_reg_range(0x0400, 0x0454), /* ACL */
++	regmap_reg_range(0x0600, 0x0718), /* Lookup */
++	regmap_reg_range(0x0800, 0x0b70), /* QM */
++	regmap_reg_range(0x0c00, 0x0c80), /* PKT */
++	regmap_reg_range(0x0e00, 0x0e98), /* L3 */
++	regmap_reg_range(0x1000, 0x10ac), /* MIB - Port0 */
++	regmap_reg_range(0x1100, 0x11ac), /* MIB - Port1 */
++	regmap_reg_range(0x1200, 0x12ac), /* MIB - Port2 */
++	regmap_reg_range(0x1300, 0x13ac), /* MIB - Port3 */
++	regmap_reg_range(0x1400, 0x14ac), /* MIB - Port4 */
++	regmap_reg_range(0x1500, 0x15ac), /* MIB - Port5 */
++	regmap_reg_range(0x1600, 0x16ac), /* MIB - Port6 */
++};
++
++const struct regmap_access_table qca8k_readable_table = {
++	.yes_ranges = qca8k_readable_ranges,
++	.n_yes_ranges = ARRAY_SIZE(qca8k_readable_ranges),
++};
+--- a/drivers/net/dsa/qca/qca8k.h
++++ b/drivers/net/dsa/qca/qca8k.h
+@@ -416,5 +416,11 @@ struct qca8k_fdb {
+ 
+ /* Common setup function */
+ extern const struct qca8k_mib_desc ar8327_mib[];
++extern const struct regmap_access_table qca8k_readable_table;
++
++/* Common read/write/rmw function */
++int qca8k_read(struct qca8k_priv *priv, u32 reg, u32 *val);
++int qca8k_write(struct qca8k_priv *priv, u32 reg, u32 val);
++int qca8k_rmw(struct qca8k_priv *priv, u32 reg, u32 mask, u32 write_val);
+ 
+ #endif /* __QCA8K_H */