bcm47xx: add kernel 5.10 support

It's for *development* only as it doesn't work with lzma-loader due to
bigger size.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 46 insertions, 0 deletions

diff --git a/target/linux/bcm47xx/patches-5.10/940-bcm47xx-yenta.patch b/target/linux/bcm47xx/patches-5.10/940-bcm47xx-yenta.patch
new file mode 100644
index 0000000000..8847b0c0c7
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.10/940-bcm47xx-yenta.patch
@@ -0,0 +1,46 @@
+--- a/drivers/pcmcia/yenta_socket.c
++++ b/drivers/pcmcia/yenta_socket.c
+@@ -932,6 +932,8 @@ static unsigned int yenta_probe_irq(stru
+ 	 * Probe for usable interrupts using the force
+ 	 * register to generate bogus card status events.
+ 	 */
++#ifndef CONFIG_BCM47XX
++	/* WRT54G3G does not like this */
+ 	cb_writel(socket, CB_SOCKET_EVENT, -1);
+ 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
+ 	reg = exca_readb(socket, I365_CSCINT);
+@@ -947,6 +949,7 @@ static unsigned int yenta_probe_irq(stru
+ 	}
+ 	cb_writel(socket, CB_SOCKET_MASK, 0);
+ 	exca_writeb(socket, I365_CSCINT, reg);
++#endif
+ 
+ 	mask = probe_irq_mask(val) & 0xffff;
+ 
+@@ -1031,6 +1034,10 @@ static void yenta_get_socket_capabilitie
+ 	else
+ 		socket->socket.irq_mask = 0;
+ 
++	/* irq mask probing is broken for the WRT54G3G */
++	if (socket->socket.irq_mask == 0)
++		socket->socket.irq_mask = 0x6f8;
++
+ 	dev_info(&socket->dev->dev, "ISA IRQ mask 0x%04x, PCI irq %d\n",
+ 		 socket->socket.irq_mask, socket->cb_irq);
+ }
+@@ -1262,6 +1269,15 @@ static int yenta_probe(struct pci_dev *d
+ 	dev_info(&dev->dev, "Socket status: %08x\n",
+ 		 cb_readl(socket, CB_SOCKET_STATE));
+ 
++	/* Generate an interrupt on card insert/remove */
++	config_writew(socket, CB_SOCKET_MASK, CB_CSTSMASK | CB_CDMASK);
++
++	/* Set up Multifunction Routing Status Register */
++	config_writew(socket, 0x8C, 0x1000 /* MFUNC3 to GPIO3 */ | 0x2 /* MFUNC0 to INTA */);
++
++	/* Switch interrupts to parallelized */
++	config_writeb(socket, 0x92, 0x64);
++
+ 	yenta_fixup_parent_bridge(dev->subordinate);
+ 
+ 	/* Register it with the pcmcia layer.. */