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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/powerpc/sysdev/tsi108_dev.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/sysdev/tsi108_dev.c')
-rw-r--r--arch/powerpc/sysdev/tsi108_dev.c153
1 files changed, 153 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/tsi108_dev.c b/arch/powerpc/sysdev/tsi108_dev.c
new file mode 100644
index 000000000..300513972
--- /dev/null
+++ b/arch/powerpc/sysdev/tsi108_dev.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * tsi108/109 device setup code
+ *
+ * Maintained by Roy Zang < tie-fei.zang@freescale.com >
+ */
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/major.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/export.h>
+#include <linux/device.h>
+#include <linux/etherdevice.h>
+#include <linux/platform_device.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_net.h>
+#include <asm/tsi108.h>
+
+#include <linux/atomic.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <mm/mmu_decl.h>
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt...) do { printk(fmt); } while(0)
+#else
+#define DBG(fmt...) do { } while(0)
+#endif
+
+static phys_addr_t tsi108_csr_base = -1;
+
+phys_addr_t get_csrbase(void)
+{
+ struct device_node *tsi;
+
+ if (tsi108_csr_base != -1)
+ return tsi108_csr_base;
+
+ tsi = of_find_node_by_type(NULL, "tsi-bridge");
+ if (tsi) {
+ unsigned int size;
+ const void *prop = of_get_property(tsi, "reg", &size);
+ tsi108_csr_base = of_translate_address(tsi, prop);
+ of_node_put(tsi);
+ }
+ return tsi108_csr_base;
+}
+EXPORT_SYMBOL(get_csrbase);
+
+u32 get_vir_csrbase(void)
+{
+ return (u32) (ioremap(get_csrbase(), 0x10000));
+}
+EXPORT_SYMBOL(get_vir_csrbase);
+
+static int __init tsi108_eth_of_init(void)
+{
+ struct device_node *np;
+ unsigned int i = 0;
+ struct platform_device *tsi_eth_dev;
+ struct resource res;
+ int ret;
+
+ for_each_compatible_node(np, "network", "tsi108-ethernet") {
+ struct resource r[2];
+ struct device_node *phy, *mdio;
+ hw_info tsi_eth_data;
+ const unsigned int *phy_id;
+ const phandle *ph;
+
+ memset(r, 0, sizeof(r));
+ memset(&tsi_eth_data, 0, sizeof(tsi_eth_data));
+
+ ret = of_address_to_resource(np, 0, &r[0]);
+ DBG("%s: name:start->end = %s:%pR\n",
+ __func__, r[0].name, &r[0]);
+ if (ret)
+ goto err;
+
+ r[1].name = "tx";
+ r[1].start = irq_of_parse_and_map(np, 0);
+ r[1].end = irq_of_parse_and_map(np, 0);
+ r[1].flags = IORESOURCE_IRQ;
+ DBG("%s: name:start->end = %s:%pR\n",
+ __func__, r[1].name, &r[1]);
+
+ tsi_eth_dev =
+ platform_device_register_simple("tsi-ethernet", i++, &r[0],
+ 1);
+
+ if (IS_ERR(tsi_eth_dev)) {
+ ret = PTR_ERR(tsi_eth_dev);
+ goto err;
+ }
+
+ of_get_mac_address(np, tsi_eth_data.mac_addr);
+
+ ph = of_get_property(np, "mdio-handle", NULL);
+ mdio = of_find_node_by_phandle(*ph);
+ ret = of_address_to_resource(mdio, 0, &res);
+ of_node_put(mdio);
+ if (ret)
+ goto unreg;
+
+ ph = of_get_property(np, "phy-handle", NULL);
+ phy = of_find_node_by_phandle(*ph);
+
+ if (phy == NULL) {
+ ret = -ENODEV;
+ goto unreg;
+ }
+
+ phy_id = of_get_property(phy, "reg", NULL);
+
+ tsi_eth_data.regs = r[0].start;
+ tsi_eth_data.phyregs = res.start;
+ tsi_eth_data.phy = *phy_id;
+ tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
+
+ /* Some boards with the TSI108 bridge (e.g. Holly)
+ * have a miswiring of the ethernet PHYs which
+ * requires a workaround. The special
+ * "txc-rxc-delay-disable" property enables this
+ * workaround. FIXME: Need to port the tsi108_eth
+ * driver itself to phylib and use a non-misleading
+ * name for the workaround flag - it's not actually to
+ * do with the model of PHY in use */
+ if (of_get_property(phy, "txc-rxc-delay-disable", NULL))
+ tsi_eth_data.phy_type = TSI108_PHY_BCM54XX;
+ of_node_put(phy);
+
+ ret =
+ platform_device_add_data(tsi_eth_dev, &tsi_eth_data,
+ sizeof(hw_info));
+ if (ret)
+ goto unreg;
+ }
+ return 0;
+unreg:
+ platform_device_unregister(tsi_eth_dev);
+err:
+ of_node_put(np);
+ return ret;
+}
+
+arch_initcall(tsi108_eth_of_init);