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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/mips/loongson1/common/platform.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/mips/loongson1/common/platform.c')
-rw-r--r--kernel/arch/mips/loongson1/common/platform.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/kernel/arch/mips/loongson1/common/platform.c b/kernel/arch/mips/loongson1/common/platform.c
new file mode 100644
index 000000000..ddf1d4cbf
--- /dev/null
+++ b/kernel/arch/mips/loongson1/common/platform.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/phy.h>
+#include <linux/serial_8250.h>
+#include <linux/stmmac.h>
+#include <linux/usb/ehci_pdriver.h>
+#include <asm-generic/sizes.h>
+
+#include <cpufreq.h>
+#include <loongson1.h>
+
+/* 8250/16550 compatible UART */
+#define LS1X_UART(_id) \
+ { \
+ .mapbase = LS1X_UART ## _id ## _BASE, \
+ .irq = LS1X_UART ## _id ## _IRQ, \
+ .iotype = UPIO_MEM, \
+ .flags = UPF_IOREMAP | UPF_FIXED_TYPE, \
+ .type = PORT_16550A, \
+ }
+
+static struct plat_serial8250_port ls1x_serial8250_pdata[] = {
+ LS1X_UART(0),
+ LS1X_UART(1),
+ LS1X_UART(2),
+ LS1X_UART(3),
+ {},
+};
+
+struct platform_device ls1x_uart_pdev = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = ls1x_serial8250_pdata,
+ },
+};
+
+void __init ls1x_serial_setup(struct platform_device *pdev)
+{
+ struct clk *clk;
+ struct plat_serial8250_port *p;
+
+ clk = clk_get(&pdev->dev, pdev->name);
+ if (IS_ERR(clk)) {
+ pr_err("unable to get %s clock, err=%ld",
+ pdev->name, PTR_ERR(clk));
+ return;
+ }
+ clk_prepare_enable(clk);
+
+ for (p = pdev->dev.platform_data; p->flags != 0; ++p)
+ p->uartclk = clk_get_rate(clk);
+}
+
+/* CPUFreq */
+static struct plat_ls1x_cpufreq ls1x_cpufreq_pdata = {
+ .clk_name = "cpu_clk",
+ .osc_clk_name = "osc_33m_clk",
+ .max_freq = 266 * 1000,
+ .min_freq = 33 * 1000,
+};
+
+struct platform_device ls1x_cpufreq_pdev = {
+ .name = "ls1x-cpufreq",
+ .dev = {
+ .platform_data = &ls1x_cpufreq_pdata,
+ },
+};
+
+/* Synopsys Ethernet GMAC */
+static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
+ .phy_mask = 0,
+};
+
+static struct stmmac_dma_cfg ls1x_eth_dma_cfg = {
+ .pbl = 1,
+};
+
+int ls1x_eth_mux_init(struct platform_device *pdev, void *priv)
+{
+ struct plat_stmmacenet_data *plat_dat = NULL;
+ u32 val;
+
+ val = __raw_readl(LS1X_MUX_CTRL1);
+
+ plat_dat = dev_get_platdata(&pdev->dev);
+ if (plat_dat->bus_id) {
+ __raw_writel(__raw_readl(LS1X_MUX_CTRL0) | GMAC1_USE_UART1 |
+ GMAC1_USE_UART0, LS1X_MUX_CTRL0);
+ switch (plat_dat->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val &= ~(GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ val |= (GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
+ break;
+ default:
+ pr_err("unsupported mii mode %d\n",
+ plat_dat->interface);
+ return -ENOTSUPP;
+ }
+ val &= ~GMAC1_SHUT;
+ } else {
+ switch (plat_dat->interface) {
+ case PHY_INTERFACE_MODE_RGMII:
+ val &= ~(GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
+ break;
+ case PHY_INTERFACE_MODE_MII:
+ val |= (GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
+ break;
+ default:
+ pr_err("unsupported mii mode %d\n",
+ plat_dat->interface);
+ return -ENOTSUPP;
+ }
+ val &= ~GMAC0_SHUT;
+ }
+ __raw_writel(val, LS1X_MUX_CTRL1);
+
+ return 0;
+}
+
+static struct plat_stmmacenet_data ls1x_eth0_pdata = {
+ .bus_id = 0,
+ .phy_addr = -1,
+ .interface = PHY_INTERFACE_MODE_MII,
+ .mdio_bus_data = &ls1x_mdio_bus_data,
+ .dma_cfg = &ls1x_eth_dma_cfg,
+ .has_gmac = 1,
+ .tx_coe = 1,
+ .init = ls1x_eth_mux_init,
+};
+
+static struct resource ls1x_eth0_resources[] = {
+ [0] = {
+ .start = LS1X_GMAC0_BASE,
+ .end = LS1X_GMAC0_BASE + SZ_64K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .name = "macirq",
+ .start = LS1X_GMAC0_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device ls1x_eth0_pdev = {
+ .name = "stmmaceth",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(ls1x_eth0_resources),
+ .resource = ls1x_eth0_resources,
+ .dev = {
+ .platform_data = &ls1x_eth0_pdata,
+ },
+};
+
+static struct plat_stmmacenet_data ls1x_eth1_pdata = {
+ .bus_id = 1,
+ .phy_addr = -1,
+ .interface = PHY_INTERFACE_MODE_MII,
+ .mdio_bus_data = &ls1x_mdio_bus_data,
+ .dma_cfg = &ls1x_eth_dma_cfg,
+ .has_gmac = 1,
+ .tx_coe = 1,
+ .init = ls1x_eth_mux_init,
+};
+
+static struct resource ls1x_eth1_resources[] = {
+ [0] = {
+ .start = LS1X_GMAC1_BASE,
+ .end = LS1X_GMAC1_BASE + SZ_64K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .name = "macirq",
+ .start = LS1X_GMAC1_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device ls1x_eth1_pdev = {
+ .name = "stmmaceth",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(ls1x_eth1_resources),
+ .resource = ls1x_eth1_resources,
+ .dev = {
+ .platform_data = &ls1x_eth1_pdata,
+ },
+};
+
+/* USB EHCI */
+static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
+
+static struct resource ls1x_ehci_resources[] = {
+ [0] = {
+ .start = LS1X_EHCI_BASE,
+ .end = LS1X_EHCI_BASE + SZ_32K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = LS1X_EHCI_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct usb_ehci_pdata ls1x_ehci_pdata = {
+};
+
+struct platform_device ls1x_ehci_pdev = {
+ .name = "ehci-platform",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(ls1x_ehci_resources),
+ .resource = ls1x_ehci_resources,
+ .dev = {
+ .dma_mask = &ls1x_ehci_dmamask,
+ .platform_data = &ls1x_ehci_pdata,
+ },
+};
+
+/* Real Time Clock */
+struct platform_device ls1x_rtc_pdev = {
+ .name = "ls1x-rtc",
+ .id = -1,
+};