kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 0 insertions, 225 deletions

diff --git a/target/linux/generic/backport-5.4/744-v5.5-net-sfp-soft-status-and-control-support.patch b/target/linux/generic/backport-5.4/744-v5.5-net-sfp-soft-status-and-control-support.patch
deleted file mode 100644
index abc9f65f09..0000000000
--- a/target/linux/generic/backport-5.4/744-v5.5-net-sfp-soft-status-and-control-support.patch
+++ /dev/null
@@ -1,225 +0,0 @@
-From 40e0b3b15f7da92e6b065292b14af7b9bfb1c6e0 Mon Sep 17 00:00:00 2001
-From: Russell King <rmk+kernel@armlinux.org.uk>
-Date: Fri, 13 Sep 2019 23:00:35 +0100
-Subject: [PATCH 642/660] net: sfp: soft status and control support
-
-Add support for the soft status and control register, which allows
-TX_FAULT and RX_LOS to be monitored and TX_DISABLE to be set.  We
-make use of this when the board does not support GPIOs for these
-signals.
-
-Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
----
- drivers/net/phy/sfp.c | 110 ++++++++++++++++++++++++++++++++++--------
- include/linux/sfp.h   |   4 ++
- 2 files changed, 94 insertions(+), 20 deletions(-)
-
---- a/drivers/net/phy/sfp.c
-+++ b/drivers/net/phy/sfp.c
-@@ -201,7 +201,10 @@ struct sfp {
- 	struct gpio_desc *gpio[GPIO_MAX];
- 	int gpio_irq[GPIO_MAX];
- 
-+	bool need_poll;
-+
- 	struct mutex st_mutex;			/* Protects state */
-+	unsigned int state_soft_mask;
- 	unsigned int state;
- 	struct delayed_work poll;
- 	struct delayed_work timeout;
-@@ -395,24 +398,90 @@ static int sfp_i2c_configure(struct sfp
- }
- 
- /* Interface */
--static unsigned int sfp_get_state(struct sfp *sfp)
-+static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len)
- {
--	return sfp->get_state(sfp);
-+	return sfp->read(sfp, a2, addr, buf, len);
- }
- 
--static void sfp_set_state(struct sfp *sfp, unsigned int state)
-+static int sfp_write(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len)
- {
--	sfp->set_state(sfp, state);
-+	return sfp->write(sfp, a2, addr, buf, len);
- }
- 
--static int sfp_read(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len)
-+static unsigned int sfp_soft_get_state(struct sfp *sfp)
- {
--	return sfp->read(sfp, a2, addr, buf, len);
-+	unsigned int state = 0;
-+	u8 status;
-+
-+	if (sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status)) ==
-+		     sizeof(status)) {
-+		if (status & SFP_STATUS_RX_LOS)
-+			state |= SFP_F_LOS;
-+		if (status & SFP_STATUS_TX_FAULT)
-+			state |= SFP_F_TX_FAULT;
-+	}
-+
-+	return state & sfp->state_soft_mask;
- }
- 
--static int sfp_write(struct sfp *sfp, bool a2, u8 addr, void *buf, size_t len)
-+static void sfp_soft_set_state(struct sfp *sfp, unsigned int state)
- {
--	return sfp->write(sfp, a2, addr, buf, len);
-+	u8 status;
-+
-+	if (sfp_read(sfp, true, SFP_STATUS, &status, sizeof(status)) ==
-+		     sizeof(status)) {
-+		if (state & SFP_F_TX_DISABLE)
-+			status |= SFP_STATUS_TX_DISABLE_FORCE;
-+		else
-+			status &= ~SFP_STATUS_TX_DISABLE_FORCE;
-+
-+		sfp_write(sfp, true, SFP_STATUS, &status, sizeof(status));
-+	}
-+}
-+
-+static void sfp_soft_start_poll(struct sfp *sfp)
-+{
-+	const struct sfp_eeprom_id *id = &sfp->id;
-+
-+	sfp->state_soft_mask = 0;
-+	if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_DISABLE &&
-+	    !sfp->gpio[GPIO_TX_DISABLE])
-+		sfp->state_soft_mask |= SFP_F_TX_DISABLE;
-+	if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_FAULT &&
-+	    !sfp->gpio[GPIO_TX_FAULT])
-+		sfp->state_soft_mask |= SFP_F_TX_FAULT;
-+	if (id->ext.enhopts & SFP_ENHOPTS_SOFT_RX_LOS &&
-+	    !sfp->gpio[GPIO_LOS])
-+		sfp->state_soft_mask |= SFP_F_LOS;
-+
-+	if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) &&
-+	    !sfp->need_poll)
-+		mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
-+}
-+
-+static void sfp_soft_stop_poll(struct sfp *sfp)
-+{
-+	sfp->state_soft_mask = 0;
-+}
-+
-+static unsigned int sfp_get_state(struct sfp *sfp)
-+{
-+	unsigned int state = sfp->get_state(sfp);
-+
-+	if (state & SFP_F_PRESENT &&
-+	    sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT))
-+		state |= sfp_soft_get_state(sfp);
-+
-+	return state;
-+}
-+
-+static void sfp_set_state(struct sfp *sfp, unsigned int state)
-+{
-+	sfp->set_state(sfp, state);
-+
-+	if (state & SFP_F_PRESENT &&
-+	    sfp->state_soft_mask & SFP_F_TX_DISABLE)
-+		sfp_soft_set_state(sfp, state);
- }
- 
- static unsigned int sfp_check(void *buf, size_t len)
-@@ -1407,11 +1476,6 @@ static void sfp_sm_fault(struct sfp *sfp
- 	}
- }
- 
--static void sfp_sm_mod_init(struct sfp *sfp)
--{
--	sfp_module_tx_enable(sfp);
--}
--
- static void sfp_sm_probe_for_phy(struct sfp *sfp)
- {
- 	/* Setting the serdes link mode is guesswork: there's no
-@@ -1574,7 +1638,7 @@ static int sfp_sm_mod_probe(struct sfp *
- 		 (int)sizeof(id.ext.datecode), id.ext.datecode);
- 
- 	/* Check whether we support this module */
--	if (!sfp->type->module_supported(&sfp->id)) {
-+	if (!sfp->type->module_supported(&id)) {
- 		dev_err(sfp->dev,
- 			"module is not supported - phys id 0x%02x 0x%02x\n",
- 			sfp->id.base.phys_id, sfp->id.base.phys_ext_id);
-@@ -1764,6 +1828,7 @@ static void sfp_sm_main(struct sfp *sfp,
- 		if (sfp->mod_phy)
- 			sfp_sm_phy_detach(sfp);
- 		sfp_module_tx_disable(sfp);
-+		sfp_soft_stop_poll(sfp);
- 		sfp_sm_next(sfp, SFP_S_DOWN, 0);
- 		return;
- 	}
-@@ -1775,7 +1840,10 @@ static void sfp_sm_main(struct sfp *sfp,
- 		    sfp->sm_dev_state != SFP_DEV_UP)
- 			break;
- 
--		sfp_sm_mod_init(sfp);
-+		if (!(sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE))
-+			sfp_soft_start_poll(sfp);
-+
-+		sfp_module_tx_enable(sfp);
- 
- 		/* Initialise the fault clearance retries */
- 		sfp->sm_retries = 5;
-@@ -2031,7 +2099,10 @@ static void sfp_poll(struct work_struct
- 	struct sfp *sfp = container_of(work, struct sfp, poll.work);
- 
- 	sfp_check_state(sfp);
--	mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
-+
-+	if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) ||
-+	    sfp->need_poll)
-+		mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
- }
- 
- static struct sfp *sfp_alloc(struct device *dev)
-@@ -2076,7 +2147,6 @@ static int sfp_probe(struct platform_dev
- 	const struct sff_data *sff;
- 	struct i2c_adapter *i2c;
- 	struct sfp *sfp;
--	bool poll = false;
- 	int err, i;
- 
- 	sfp = sfp_alloc(&pdev->dev);
-@@ -2184,7 +2254,7 @@ static int sfp_probe(struct platform_dev
- 		sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]);
- 		if (sfp->gpio_irq[i] < 0) {
- 			sfp->gpio_irq[i] = 0;
--			poll = true;
-+			sfp->need_poll = true;
- 			continue;
- 		}
- 
-@@ -2196,11 +2266,11 @@ static int sfp_probe(struct platform_dev
- 						dev_name(sfp->dev), sfp);
- 		if (err) {
- 			sfp->gpio_irq[i] = 0;
--			poll = true;
-+			sfp->need_poll = true;
- 		}
- 	}
- 
--	if (poll)
-+	if (sfp->need_poll)
- 		mod_delayed_work(system_wq, &sfp->poll, poll_jiffies);
- 
- 	/* We could have an issue in cases no Tx disable pin is available or
---- a/include/linux/sfp.h
-+++ b/include/linux/sfp.h
-@@ -428,6 +428,10 @@ enum {
- 	SFP_TEC_CUR			= 0x6c,
- 
- 	SFP_STATUS			= 0x6e,
-+	SFP_STATUS_TX_DISABLE		= BIT(7),
-+	SFP_STATUS_TX_DISABLE_FORCE	= BIT(6),
-+	SFP_STATUS_TX_FAULT		= BIT(2),
-+	SFP_STATUS_RX_LOS		= BIT(1),
- 	SFP_ALARM0			= 0x70,
- 	SFP_ALARM0_TEMP_HIGH		= BIT(7),
- 	SFP_ALARM0_TEMP_LOW		= BIT(6),