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Linux/arch/mips/loongson32/common/platform.c

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  1 /*
  2  * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
  3  *
  4  * This program is free software; you can redistribute  it and/or modify it
  5  * under  the terms of  the GNU General  Public License as published by the
  6  * Free Software Foundation;  either version 2 of the  License, or (at your
  7  * option) any later version.
  8  */
  9 
 10 #include <linux/clk.h>
 11 #include <linux/dma-mapping.h>
 12 #include <linux/err.h>
 13 #include <linux/phy.h>
 14 #include <linux/serial_8250.h>
 15 #include <linux/stmmac.h>
 16 #include <linux/usb/ehci_pdriver.h>
 17 #include <asm-generic/sizes.h>
 18 
 19 #include <cpufreq.h>
 20 #include <loongson1.h>
 21 
 22 /* 8250/16550 compatible UART */
 23 #define LS1X_UART(_id)                                          \
 24         {                                                       \
 25                 .mapbase        = LS1X_UART ## _id ## _BASE,    \
 26                 .irq            = LS1X_UART ## _id ## _IRQ,     \
 27                 .iotype         = UPIO_MEM,                     \
 28                 .flags          = UPF_IOREMAP | UPF_FIXED_TYPE, \
 29                 .type           = PORT_16550A,                  \
 30         }
 31 
 32 static struct plat_serial8250_port ls1x_serial8250_pdata[] = {
 33         LS1X_UART(0),
 34         LS1X_UART(1),
 35         LS1X_UART(2),
 36         LS1X_UART(3),
 37         {},
 38 };
 39 
 40 struct platform_device ls1x_uart_pdev = {
 41         .name           = "serial8250",
 42         .id             = PLAT8250_DEV_PLATFORM,
 43         .dev            = {
 44                 .platform_data = ls1x_serial8250_pdata,
 45         },
 46 };
 47 
 48 void __init ls1x_serial_setup(struct platform_device *pdev)
 49 {
 50         struct clk *clk;
 51         struct plat_serial8250_port *p;
 52 
 53         clk = clk_get(&pdev->dev, pdev->name);
 54         if (IS_ERR(clk)) {
 55                 pr_err("unable to get %s clock, err=%ld",
 56                        pdev->name, PTR_ERR(clk));
 57                 return;
 58         }
 59         clk_prepare_enable(clk);
 60 
 61         for (p = pdev->dev.platform_data; p->flags != 0; ++p)
 62                 p->uartclk = clk_get_rate(clk);
 63 }
 64 
 65 /* CPUFreq */
 66 static struct plat_ls1x_cpufreq ls1x_cpufreq_pdata = {
 67         .clk_name       = "cpu_clk",
 68         .osc_clk_name   = "osc_33m_clk",
 69         .max_freq       = 266 * 1000,
 70         .min_freq       = 33 * 1000,
 71 };
 72 
 73 struct platform_device ls1x_cpufreq_pdev = {
 74         .name           = "ls1x-cpufreq",
 75         .dev            = {
 76                 .platform_data = &ls1x_cpufreq_pdata,
 77         },
 78 };
 79 
 80 /* Synopsys Ethernet GMAC */
 81 static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
 82         .phy_mask       = 0,
 83 };
 84 
 85 static struct stmmac_dma_cfg ls1x_eth_dma_cfg = {
 86         .pbl            = 1,
 87 };
 88 
 89 int ls1x_eth_mux_init(struct platform_device *pdev, void *priv)
 90 {
 91         struct plat_stmmacenet_data *plat_dat = NULL;
 92         u32 val;
 93 
 94         val = __raw_readl(LS1X_MUX_CTRL1);
 95 
 96         plat_dat = dev_get_platdata(&pdev->dev);
 97         if (plat_dat->bus_id) {
 98                 __raw_writel(__raw_readl(LS1X_MUX_CTRL0) | GMAC1_USE_UART1 |
 99                              GMAC1_USE_UART0, LS1X_MUX_CTRL0);
100                 switch (plat_dat->interface) {
101                 case PHY_INTERFACE_MODE_RGMII:
102                         val &= ~(GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
103                         break;
104                 case PHY_INTERFACE_MODE_MII:
105                         val |= (GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
106                         break;
107                 default:
108                         pr_err("unsupported mii mode %d\n",
109                                plat_dat->interface);
110                         return -ENOTSUPP;
111                 }
112                 val &= ~GMAC1_SHUT;
113         } else {
114                 switch (plat_dat->interface) {
115                 case PHY_INTERFACE_MODE_RGMII:
116                         val &= ~(GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
117                         break;
118                 case PHY_INTERFACE_MODE_MII:
119                         val |= (GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
120                         break;
121                 default:
122                         pr_err("unsupported mii mode %d\n",
123                                plat_dat->interface);
124                         return -ENOTSUPP;
125                 }
126                 val &= ~GMAC0_SHUT;
127         }
128         __raw_writel(val, LS1X_MUX_CTRL1);
129 
130         return 0;
131 }
132 
133 static struct plat_stmmacenet_data ls1x_eth0_pdata = {
134         .bus_id         = 0,
135         .phy_addr       = -1,
136         .interface      = PHY_INTERFACE_MODE_MII,
137         .mdio_bus_data  = &ls1x_mdio_bus_data,
138         .dma_cfg        = &ls1x_eth_dma_cfg,
139         .has_gmac       = 1,
140         .tx_coe         = 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 static struct plat_stmmacenet_data ls1x_eth1_pdata = {
168         .bus_id         = 1,
169         .phy_addr       = -1,
170         .interface      = PHY_INTERFACE_MODE_MII,
171         .mdio_bus_data  = &ls1x_mdio_bus_data,
172         .dma_cfg        = &ls1x_eth_dma_cfg,
173         .has_gmac       = 1,
174         .tx_coe         = 1,
175         .init           = ls1x_eth_mux_init,
176 };
177 
178 static struct resource ls1x_eth1_resources[] = {
179         [0] = {
180                 .start  = LS1X_GMAC1_BASE,
181                 .end    = LS1X_GMAC1_BASE + SZ_64K - 1,
182                 .flags  = IORESOURCE_MEM,
183         },
184         [1] = {
185                 .name   = "macirq",
186                 .start  = LS1X_GMAC1_IRQ,
187                 .flags  = IORESOURCE_IRQ,
188         },
189 };
190 
191 struct platform_device ls1x_eth1_pdev = {
192         .name           = "stmmaceth",
193         .id             = 1,
194         .num_resources  = ARRAY_SIZE(ls1x_eth1_resources),
195         .resource       = ls1x_eth1_resources,
196         .dev            = {
197                 .platform_data = &ls1x_eth1_pdata,
198         },
199 };
200 
201 /* USB EHCI */
202 static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
203 
204 static struct resource ls1x_ehci_resources[] = {
205         [0] = {
206                 .start  = LS1X_EHCI_BASE,
207                 .end    = LS1X_EHCI_BASE + SZ_32K - 1,
208                 .flags  = IORESOURCE_MEM,
209         },
210         [1] = {
211                 .start  = LS1X_EHCI_IRQ,
212                 .flags  = IORESOURCE_IRQ,
213         },
214 };
215 
216 static struct usb_ehci_pdata ls1x_ehci_pdata = {
217 };
218 
219 struct platform_device ls1x_ehci_pdev = {
220         .name           = "ehci-platform",
221         .id             = -1,
222         .num_resources  = ARRAY_SIZE(ls1x_ehci_resources),
223         .resource       = ls1x_ehci_resources,
224         .dev            = {
225                 .dma_mask = &ls1x_ehci_dmamask,
226                 .platform_data = &ls1x_ehci_pdata,
227         },
228 };
229 
230 /* Real Time Clock */
231 struct platform_device ls1x_rtc_pdev = {
232         .name           = "ls1x-rtc",
233         .id             = -1,
234 };
235 

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