* by the Free Software Foundation.
*
* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
+ * Copyright (C) 2013-2015 Lantiq Beteiligungs-GmbH & Co.KG
*/
#include <linux/init.h>
#include "../prom.h"
-#define ltq_rcu_w32(x, y) ltq_w32((x), ltq_rcu_membase + (y))
-#define ltq_rcu_r32(x) ltq_r32(ltq_rcu_membase + (x))
-
/* reset request register */
#define RCU_RST_REQ 0x0010
/* reset status register */
/* vr9 gphy registers */
#define RCU_GFS_ADD0_XRX200 0x0020
#define RCU_GFS_ADD1_XRX200 0x0068
+/* xRX300 gphy registers */
+#define RCU_GFS_ADD0_XRX300 0x0020
+#define RCU_GFS_ADD1_XRX300 0x0058
+#define RCU_GFS_ADD2_XRX300 0x00AC
+/* xRX330 gphy registers */
+#define RCU_GFS_ADD0_XRX330 0x0020
+#define RCU_GFS_ADD1_XRX330 0x0058
+#define RCU_GFS_ADD2_XRX330 0x00AC
+#define RCU_GFS_ADD3_XRX330 0x0264
/* reboot bit */
#define RCU_RD_GPHY0_XRX200 BIT(31)
#define RCU_RD_SRST BIT(30)
#define RCU_RD_GPHY1_XRX200 BIT(29)
+/* xRX300 bits */
+#define RCU_RD_GPHY0_XRX300 BIT(31)
+#define RCU_RD_GPHY1_XRX300 BIT(29)
+#define RCU_RD_GPHY2_XRX300 BIT(28)
+/* xRX330 bits */
+#define RCU_RD_GPHY0_XRX330 BIT(31)
+#define RCU_RD_GPHY1_XRX330 BIT(29)
+#define RCU_RD_GPHY2_XRX330 BIT(28)
+#define RCU_RD_GPHY3_XRX330 BIT(10)
/* reset cause */
#define RCU_STAT_SHIFT 26
/* remapped base addr of the reset control unit */
static void __iomem *ltq_rcu_membase;
static struct device_node *ltq_rcu_np;
+static DEFINE_SPINLOCK(ltq_rcu_lock);
+
+static void ltq_rcu_w32(uint32_t val, uint32_t reg_off)
+{
+ ltq_w32(val, ltq_rcu_membase + reg_off);
+}
+
+static uint32_t ltq_rcu_r32(uint32_t reg_off)
+{
+ return ltq_r32(ltq_rcu_membase + reg_off);
+}
+
+static void ltq_rcu_w32_mask(uint32_t clr, uint32_t set, uint32_t reg_off)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(<q_rcu_lock, flags);
+ ltq_rcu_w32((ltq_rcu_r32(reg_off) & ~(clr)) | (set), reg_off);
+ spin_unlock_irqrestore(<q_rcu_lock, flags);
+}
/* This function is used by the watchdog driver */
int ltq_reset_cause(void)
return RCU_BOOT_SEL(val);
}
-/* reset / boot a gphy */
-static struct ltq_xrx200_gphy_reset {
+struct ltq_gphy_reset {
u32 rd;
u32 addr;
-} xrx200_gphy[] = {
+};
+
+/* reset / boot a gphy */
+static struct ltq_gphy_reset xrx200_gphy[] = {
{RCU_RD_GPHY0_XRX200, RCU_GFS_ADD0_XRX200},
{RCU_RD_GPHY1_XRX200, RCU_GFS_ADD1_XRX200},
};
+/* reset / boot a gphy */
+static struct ltq_gphy_reset xrx300_gphy[] = {
+ {RCU_RD_GPHY0_XRX300, RCU_GFS_ADD0_XRX300},
+ {RCU_RD_GPHY1_XRX300, RCU_GFS_ADD1_XRX300},
+ {RCU_RD_GPHY2_XRX300, RCU_GFS_ADD2_XRX300},
+};
+
+/* reset / boot a gphy */
+static struct ltq_gphy_reset xrx330_gphy[] = {
+ {RCU_RD_GPHY0_XRX330, RCU_GFS_ADD0_XRX330},
+ {RCU_RD_GPHY1_XRX330, RCU_GFS_ADD1_XRX330},
+ {RCU_RD_GPHY2_XRX330, RCU_GFS_ADD2_XRX330},
+ {RCU_RD_GPHY3_XRX330, RCU_GFS_ADD3_XRX330},
+};
+
+static void xrx200_gphy_boot_addr(struct ltq_gphy_reset *phy_regs,
+ dma_addr_t dev_addr)
+{
+ ltq_rcu_w32_mask(0, phy_regs->rd, RCU_RST_REQ);
+ ltq_rcu_w32(dev_addr, phy_regs->addr);
+ ltq_rcu_w32_mask(phy_regs->rd, 0, RCU_RST_REQ);
+}
+
/* reset and boot a gphy. these phys only exist on xrx200 SoC */
int xrx200_gphy_boot(struct device *dev, unsigned int id, dma_addr_t dev_addr)
{
return -EINVAL;
}
- clk = clk_get_sys("1f203000.rcu", "gphy");
- if (IS_ERR(clk))
- return PTR_ERR(clk);
-
- clk_enable(clk);
-
- if (id > 1) {
- dev_err(dev, "%u is an invalid gphy id\n", id);
- return -EINVAL;
+ if (of_machine_is_compatible("lantiq,vr9")) {
+ clk = clk_get_sys("1f203000.rcu", "gphy");
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+ clk_enable(clk);
}
+
dev_info(dev, "booting GPHY%u firmware at %X\n", id, dev_addr);
- ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) | xrx200_gphy[id].rd,
- RCU_RST_REQ);
- ltq_rcu_w32(dev_addr, xrx200_gphy[id].addr);
- ltq_rcu_w32(ltq_rcu_r32(RCU_RST_REQ) & ~xrx200_gphy[id].rd,
- RCU_RST_REQ);
+ if (of_machine_is_compatible("lantiq,vr9")) {
+ if (id >= ARRAY_SIZE(xrx200_gphy)) {
+ dev_err(dev, "%u is an invalid gphy id\n", id);
+ return -EINVAL;
+ }
+ xrx200_gphy_boot_addr(&xrx200_gphy[id], dev_addr);
+ } else if (of_machine_is_compatible("lantiq,ar10")) {
+ if (id >= ARRAY_SIZE(xrx300_gphy)) {
+ dev_err(dev, "%u is an invalid gphy id\n", id);
+ return -EINVAL;
+ }
+ xrx200_gphy_boot_addr(&xrx300_gphy[id], dev_addr);
+ } else if (of_machine_is_compatible("lantiq,grx390")) {
+ if (id >= ARRAY_SIZE(xrx330_gphy)) {
+ dev_err(dev, "%u is an invalid gphy id\n", id);
+ return -EINVAL;
+ }
+ xrx200_gphy_boot_addr(&xrx330_gphy[id], dev_addr);
+ }
return 0;
}
if (of_address_to_resource(ltq_rcu_np, 0, &res))
panic("Failed to get rcu memory range");
- if (request_mem_region(res.start, resource_size(&res), res.name) < 0)
+ if (!request_mem_region(res.start, resource_size(&res), res.name))
pr_err("Failed to request rcu memory");
ltq_rcu_membase = ioremap_nocache(res.start, resource_size(&res));
projects / karo-tx-linux.git / blobdiff