arch/mips/loongson32/common/platform.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2011-2016 Zhang, Keguang <keguang.zhang@gmail.com>
   4  */
   5
   6 #include <linux/clk.h>
   7 #include <linux/dma-mapping.h>
   8 #include <linux/err.h>
   9 #include <linux/mtd/partitions.h>
  10 #include <linux/sizes.h>
  11 #include <linux/phy.h>
  12 #include <linux/serial_8250.h>
  13 #include <linux/stmmac.h>
  14 #include <linux/usb/ehci_pdriver.h>
  15
  16 #include <platform.h>
  17 #include <loongson1.h>
  18
  19 /* 8250/16550 compatible UART */
  20 #define LS1X_UART(_id)                                          \
  21         {                                                       \
  22                 .mapbase        = LS1X_UART ## _id ## _BASE,    \
  23                 .irq            = LS1X_UART ## _id ## _IRQ,     \
  24                 .iotype         = UPIO_MEM,                     \
  25                 .flags          = UPF_IOREMAP | UPF_FIXED_TYPE, \
  26                 .type           = PORT_16550A,                  \
  27         }
  28
  29 static struct plat_serial8250_port ls1x_serial8250_pdata[] = {
  30         LS1X_UART(0),
  31         LS1X_UART(1),
  32         LS1X_UART(2),
  33         LS1X_UART(3),
  34         {},
  35 };
  36
  37 struct platform_device ls1x_uart_pdev = {
  38         .name           = "serial8250",
  39         .id             = PLAT8250_DEV_PLATFORM,
  40         .dev            = {
  41                 .platform_data = ls1x_serial8250_pdata,
  42         },
  43 };
  44
  45 void __init ls1x_serial_set_uartclk(struct platform_device *pdev)
  46 {
  47         struct clk *clk;
  48         struct plat_serial8250_port *p;
  49
  50         clk = clk_get(&pdev->dev, pdev->name);
  51         if (IS_ERR(clk)) {
  52                 pr_err("unable to get %s clock, err=%ld",
  53                        pdev->name, PTR_ERR(clk));
  54                 return;
  55         }
  56         clk_prepare_enable(clk);
  57
  58         for (p = pdev->dev.platform_data; p->flags != 0; ++p)
  59                 p->uartclk = clk_get_rate(clk);
  60 }
  61
  62 /* Synopsys Ethernet GMAC */
  63 static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
  64         .phy_mask       = 0,
  65 };
  66
  67 static struct stmmac_dma_cfg ls1x_eth_dma_cfg = {
  68         .pbl            = 1,
  69 };
  70
  71 int ls1x_eth_mux_init(struct platform_device *pdev, void *priv)
  72 {
  73         struct plat_stmmacenet_data *plat_dat = NULL;
  74         u32 val;
  75
  76         val = __raw_readl(LS1X_MUX_CTRL1);
  77
  78 #if defined(CONFIG_LOONGSON1_LS1B)
  79         plat_dat = dev_get_platdata(&pdev->dev);
  80         if (plat_dat->bus_id) {
  81                 __raw_writel(__raw_readl(LS1X_MUX_CTRL0) | GMAC1_USE_UART1 |
  82                              GMAC1_USE_UART0, LS1X_MUX_CTRL0);
  83                 switch (plat_dat->phy_interface) {
  84                 case PHY_INTERFACE_MODE_RGMII:
  85                         val &= ~(GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
  86                         break;
  87                 case PHY_INTERFACE_MODE_MII:
  88                         val |= (GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
  89                         break;
  90                 default:
  91                         pr_err("unsupported mii mode %d\n",
  92                                plat_dat->phy_interface);
  93                         return -ENOTSUPP;
  94                 }
  95                 val &= ~GMAC1_SHUT;
  96         } else {
  97                 switch (plat_dat->phy_interface) {
  98                 case PHY_INTERFACE_MODE_RGMII:
  99                         val &= ~(GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
 100                         break;
 101                 case PHY_INTERFACE_MODE_MII:
 102                         val |= (GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
 103                         break;
 104                 default:
 105                         pr_err("unsupported mii mode %d\n",
 106                                plat_dat->phy_interface);
 107                         return -ENOTSUPP;
 108                 }
 109                 val &= ~GMAC0_SHUT;
 110         }
 111         __raw_writel(val, LS1X_MUX_CTRL1);
 112 #elif defined(CONFIG_LOONGSON1_LS1C)
 113         plat_dat = dev_get_platdata(&pdev->dev);
 114
 115         val &= ~PHY_INTF_SELI;
 116         if (plat_dat->phy_interface == PHY_INTERFACE_MODE_RMII)
 117                 val |= 0x4 << PHY_INTF_SELI_SHIFT;
 118         __raw_writel(val, LS1X_MUX_CTRL1);
 119
 120         val = __raw_readl(LS1X_MUX_CTRL0);
 121         __raw_writel(val & (~GMAC_SHUT), LS1X_MUX_CTRL0);
 122 #endif
 123
 124         return 0;
 125 }
 126
 127 static struct plat_stmmacenet_data ls1x_eth0_pdata = {
 128         .bus_id                 = 0,
 129         .phy_addr               = -1,
 130 #if defined(CONFIG_LOONGSON1_LS1B)
 131         .phy_interface          = PHY_INTERFACE_MODE_MII,
 132 #elif defined(CONFIG_LOONGSON1_LS1C)
 133         .phy_interface          = PHY_INTERFACE_MODE_RMII,
 134 #endif
 135         .mdio_bus_data          = &ls1x_mdio_bus_data,
 136         .dma_cfg                = &ls1x_eth_dma_cfg,
 137         .has_gmac               = 1,
 138         .tx_coe                 = 1,
 139         .rx_queues_to_use       = 1,
 140         .tx_queues_to_use       = 1,
 141         .init                   = ls1x_eth_mux_init,
 142 };
 143
 144 static struct resource ls1x_eth0_resources[] = {
 145         [0] = {
 146                 .start  = LS1X_GMAC0_BASE,
 147                 .end    = LS1X_GMAC0_BASE + SZ_64K - 1,
 148                 .flags  = IORESOURCE_MEM,
 149         },
 150         [1] = {
 151                 .name   = "macirq",
 152                 .start  = LS1X_GMAC0_IRQ,
 153                 .flags  = IORESOURCE_IRQ,
 154         },
 155 };
 156
 157 struct platform_device ls1x_eth0_pdev = {
 158         .name           = "stmmaceth",
 159         .id             = 0,
 160         .num_resources  = ARRAY_SIZE(ls1x_eth0_resources),
 161         .resource       = ls1x_eth0_resources,
 162         .dev            = {
 163                 .platform_data = &ls1x_eth0_pdata,
 164         },
 165 };
 166
 167 #ifdef CONFIG_LOONGSON1_LS1B
 168 static struct plat_stmmacenet_data ls1x_eth1_pdata = {
 169         .bus_id                 = 1,
 170         .phy_addr               = -1,
 171         .phy_interface          = PHY_INTERFACE_MODE_MII,
 172         .mdio_bus_data          = &ls1x_mdio_bus_data,
 173         .dma_cfg                = &ls1x_eth_dma_cfg,
 174         .has_gmac               = 1,
 175         .tx_coe                 = 1,
 176         .rx_queues_to_use       = 1,
 177         .tx_queues_to_use       = 1,
 178         .init                   = ls1x_eth_mux_init,
 179 };
 180
 181 static struct resource ls1x_eth1_resources[] = {
 182         [0] = {
 183                 .start  = LS1X_GMAC1_BASE,
 184                 .end    = LS1X_GMAC1_BASE + SZ_64K - 1,
 185                 .flags  = IORESOURCE_MEM,
 186         },
 187         [1] = {
 188                 .name   = "macirq",
 189                 .start  = LS1X_GMAC1_IRQ,
 190                 .flags  = IORESOURCE_IRQ,
 191         },
 192 };
 193
 194 struct platform_device ls1x_eth1_pdev = {
 195         .name           = "stmmaceth",
 196         .id             = 1,
 197         .num_resources  = ARRAY_SIZE(ls1x_eth1_resources),
 198         .resource       = ls1x_eth1_resources,
 199         .dev            = {
 200                 .platform_data = &ls1x_eth1_pdata,
 201         },
 202 };
 203 #endif  /* CONFIG_LOONGSON1_LS1B */
 204
 205 /* GPIO */
 206 static struct resource ls1x_gpio0_resources[] = {
 207         [0] = {
 208                 .start  = LS1X_GPIO0_BASE,
 209                 .end    = LS1X_GPIO0_BASE + SZ_4 - 1,
 210                 .flags  = IORESOURCE_MEM,
 211         },
 212 };
 213
 214 struct platform_device ls1x_gpio0_pdev = {
 215         .name           = "ls1x-gpio",
 216         .id             = 0,
 217         .num_resources  = ARRAY_SIZE(ls1x_gpio0_resources),
 218         .resource       = ls1x_gpio0_resources,
 219 };
 220
 221 static struct resource ls1x_gpio1_resources[] = {
 222         [0] = {
 223                 .start  = LS1X_GPIO1_BASE,
 224                 .end    = LS1X_GPIO1_BASE + SZ_4 - 1,
 225                 .flags  = IORESOURCE_MEM,
 226         },
 227 };
 228
 229 struct platform_device ls1x_gpio1_pdev = {
 230         .name           = "ls1x-gpio",
 231         .id             = 1,
 232         .num_resources  = ARRAY_SIZE(ls1x_gpio1_resources),
 233         .resource       = ls1x_gpio1_resources,
 234 };
 235
 236 /* USB EHCI */
 237 static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
 238
 239 static struct resource ls1x_ehci_resources[] = {
 240         [0] = {
 241                 .start  = LS1X_EHCI_BASE,
 242                 .end    = LS1X_EHCI_BASE + SZ_32K - 1,
 243                 .flags  = IORESOURCE_MEM,
 244         },
 245         [1] = {
 246                 .start  = LS1X_EHCI_IRQ,
 247                 .flags  = IORESOURCE_IRQ,
 248         },
 249 };
 250
 251 static struct usb_ehci_pdata ls1x_ehci_pdata = {
 252 };
 253
 254 struct platform_device ls1x_ehci_pdev = {
 255         .name           = "ehci-platform",
 256         .id             = -1,
 257         .num_resources  = ARRAY_SIZE(ls1x_ehci_resources),
 258         .resource       = ls1x_ehci_resources,
 259         .dev            = {
 260                 .dma_mask = &ls1x_ehci_dmamask,
 261                 .platform_data = &ls1x_ehci_pdata,
 262         },
 263 };
 264
 265 /* Real Time Clock */
 266 struct platform_device ls1x_rtc_pdev = {
 267         .name           = "ls1x-rtc",
 268         .id             = -1,
 269 };
 270
 271 /* Watchdog */
 272 static struct resource ls1x_wdt_resources[] = {
 273         {
 274                 .start  = LS1X_WDT_BASE,
 275                 .end    = LS1X_WDT_BASE + SZ_16 - 1,
 276                 .flags  = IORESOURCE_MEM,
 277         },
 278 };
 279
 280 struct platform_device ls1x_wdt_pdev = {
 281         .name           = "ls1x-wdt",
 282         .id             = -1,
 283         .num_resources  = ARRAY_SIZE(ls1x_wdt_resources),
 284         .resource       = ls1x_wdt_resources,
 285 };