diff options
Diffstat (limited to 'arch/mips/ralink/rt3883.c')
| -rw-r--r-- | arch/mips/ralink/rt3883.c | 176 |
1 files changed, 69 insertions, 107 deletions
diff --git a/arch/mips/ralink/rt3883.c b/arch/mips/ralink/rt3883.c index 8f3fe3106708..21ce00da5758 100644 --- a/arch/mips/ralink/rt3883.c +++ b/arch/mips/ralink/rt3883.c @@ -10,139 +10,101 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/slab.h> +#include <linux/sys_soc.h> #include <asm/mipsregs.h> #include <asm/mach-ralink/ralink_regs.h> #include <asm/mach-ralink/rt3883.h> -#include <asm/mach-ralink/pinmux.h> #include "common.h" -static struct rt2880_pmx_func i2c_func[] = { FUNC("i2c", 0, 1, 2) }; -static struct rt2880_pmx_func spi_func[] = { FUNC("spi", 0, 3, 4) }; -static struct rt2880_pmx_func uartf_func[] = { - FUNC("uartf", RT3883_GPIO_MODE_UARTF, 7, 8), - FUNC("pcm uartf", RT3883_GPIO_MODE_PCM_UARTF, 7, 8), - FUNC("pcm i2s", RT3883_GPIO_MODE_PCM_I2S, 7, 8), - FUNC("i2s uartf", RT3883_GPIO_MODE_I2S_UARTF, 7, 8), - FUNC("pcm gpio", RT3883_GPIO_MODE_PCM_GPIO, 11, 4), - FUNC("gpio uartf", RT3883_GPIO_MODE_GPIO_UARTF, 7, 4), - FUNC("gpio i2s", RT3883_GPIO_MODE_GPIO_I2S, 7, 4), -}; -static struct rt2880_pmx_func uartlite_func[] = { FUNC("uartlite", 0, 15, 2) }; -static struct rt2880_pmx_func jtag_func[] = { FUNC("jtag", 0, 17, 5) }; -static struct rt2880_pmx_func mdio_func[] = { FUNC("mdio", 0, 22, 2) }; -static struct rt2880_pmx_func lna_a_func[] = { FUNC("lna a", 0, 32, 3) }; -static struct rt2880_pmx_func lna_g_func[] = { FUNC("lna g", 0, 35, 3) }; -static struct rt2880_pmx_func pci_func[] = { - FUNC("pci-dev", 0, 40, 32), - FUNC("pci-host2", 1, 40, 32), - FUNC("pci-host1", 2, 40, 32), - FUNC("pci-fnc", 3, 40, 32) -}; -static struct rt2880_pmx_func ge1_func[] = { FUNC("ge1", 0, 72, 12) }; -static struct rt2880_pmx_func ge2_func[] = { FUNC("ge2", 0, 84, 12) }; - -static struct rt2880_pmx_group rt3883_pinmux_data[] = { - GRP("i2c", i2c_func, 1, RT3883_GPIO_MODE_I2C), - GRP("spi", spi_func, 1, RT3883_GPIO_MODE_SPI), - GRP("uartf", uartf_func, RT3883_GPIO_MODE_UART0_MASK, - RT3883_GPIO_MODE_UART0_SHIFT), - GRP("uartlite", uartlite_func, 1, RT3883_GPIO_MODE_UART1), - GRP("jtag", jtag_func, 1, RT3883_GPIO_MODE_JTAG), - GRP("mdio", mdio_func, 1, RT3883_GPIO_MODE_MDIO), - GRP("lna a", lna_a_func, 1, RT3883_GPIO_MODE_LNA_A), - GRP("lna g", lna_g_func, 1, RT3883_GPIO_MODE_LNA_G), - GRP("pci", pci_func, RT3883_GPIO_MODE_PCI_MASK, - RT3883_GPIO_MODE_PCI_SHIFT), - GRP("ge1", ge1_func, 1, RT3883_GPIO_MODE_GE1), - GRP("ge2", ge2_func, 1, RT3883_GPIO_MODE_GE2), - { 0 } -}; - -void __init ralink_clk_init(void) +static struct ralink_soc_info *soc_info_ptr; + +static unsigned int __init rt3883_get_soc_name0(void) { - unsigned long cpu_rate, sys_rate; - u32 syscfg0; - u32 clksel; - u32 ddr2; - - syscfg0 = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG0); - clksel = ((syscfg0 >> RT3883_SYSCFG0_CPUCLK_SHIFT) & - RT3883_SYSCFG0_CPUCLK_MASK); - ddr2 = syscfg0 & RT3883_SYSCFG0_DRAM_TYPE_DDR2; - - switch (clksel) { - case RT3883_SYSCFG0_CPUCLK_250: - cpu_rate = 250000000; - sys_rate = (ddr2) ? 125000000 : 83000000; - break; - case RT3883_SYSCFG0_CPUCLK_384: - cpu_rate = 384000000; - sys_rate = (ddr2) ? 128000000 : 96000000; - break; - case RT3883_SYSCFG0_CPUCLK_480: - cpu_rate = 480000000; - sys_rate = (ddr2) ? 160000000 : 120000000; - break; - case RT3883_SYSCFG0_CPUCLK_500: - cpu_rate = 500000000; - sys_rate = (ddr2) ? 166000000 : 125000000; - break; - } + return __raw_readl(RT3883_SYSC_BASE + RT3883_SYSC_REG_CHIPID0_3); +} - ralink_clk_add("cpu", cpu_rate); - ralink_clk_add("10000100.timer", sys_rate); - ralink_clk_add("10000120.watchdog", sys_rate); - ralink_clk_add("10000500.uart", 40000000); - ralink_clk_add("10000900.i2c", 40000000); - ralink_clk_add("10000a00.i2s", 40000000); - ralink_clk_add("10000b00.spi", sys_rate); - ralink_clk_add("10000b40.spi", sys_rate); - ralink_clk_add("10000c00.uartlite", 40000000); - ralink_clk_add("10100000.ethernet", sys_rate); - ralink_clk_add("10180000.wmac", 40000000); +static unsigned int __init rt3883_get_soc_name1(void) +{ + return __raw_readl(RT3883_SYSC_BASE + RT3883_SYSC_REG_CHIPID4_7); } -void __init ralink_of_remap(void) +static bool __init rt3883_soc_valid(void) { - rt_sysc_membase = plat_of_remap_node("ralink,rt3883-sysc"); - rt_memc_membase = plat_of_remap_node("ralink,rt3883-memc"); + if (rt3883_get_soc_name0() == RT3883_CHIP_NAME0 && + rt3883_get_soc_name1() == RT3883_CHIP_NAME1) + return true; + else + return false; +} - if (!rt_sysc_membase || !rt_memc_membase) - panic("Failed to remap core resources"); +static const char __init *rt3883_get_soc_name(void) +{ + if (rt3883_soc_valid()) + return "RT3883"; + else + return "invalid"; } -void prom_soc_init(struct ralink_soc_info *soc_info) +static unsigned int __init rt3883_get_soc_id(void) { - void __iomem *sysc = (void __iomem *) KSEG1ADDR(RT3883_SYSC_BASE); - const char *name; - u32 n0; - u32 n1; - u32 id; + return __raw_readl(RT3883_SYSC_BASE + RT3883_SYSC_REG_REVID); +} - n0 = __raw_readl(sysc + RT3883_SYSC_REG_CHIPID0_3); - n1 = __raw_readl(sysc + RT3883_SYSC_REG_CHIPID4_7); - id = __raw_readl(sysc + RT3883_SYSC_REG_REVID); +static unsigned int __init rt3883_get_soc_ver(void) +{ + return (rt3883_get_soc_id() >> RT3883_REVID_VER_ID_SHIFT) & RT3883_REVID_VER_ID_MASK; +} - if (n0 == RT3883_CHIP_NAME0 && n1 == RT3883_CHIP_NAME1) { - soc_info->compatible = "ralink,rt3883-soc"; - name = "RT3883"; - } else { - panic("rt3883: unknown SoC, n0:%08x n1:%08x", n0, n1); +static unsigned int __init rt3883_get_soc_rev(void) +{ + return (rt3883_get_soc_id() & RT3883_REVID_ECO_ID_MASK); +} + +static int __init rt3883_soc_dev_init(void) +{ + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return -ENOMEM; + + soc_dev_attr->family = "Ralink"; + soc_dev_attr->soc_id = rt3883_get_soc_name(); + + soc_dev_attr->data = soc_info_ptr; + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr); + return PTR_ERR(soc_dev); } + return 0; +} +device_initcall(rt3883_soc_dev_init); + +void __init prom_soc_init(struct ralink_soc_info *soc_info) +{ + if (rt3883_soc_valid()) + soc_info->compatible = "ralink,rt3883-soc"; + else + panic("rt3883: unknown SoC, n0:%08x n1:%08x", + rt3883_get_soc_name0(), rt3883_get_soc_name1()); + snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN, "Ralink %s ver:%u eco:%u", - name, - (id >> RT3883_REVID_VER_ID_SHIFT) & RT3883_REVID_VER_ID_MASK, - (id & RT3883_REVID_ECO_ID_MASK)); + rt3883_get_soc_name(), + rt3883_get_soc_ver(), + rt3883_get_soc_rev()); soc_info->mem_base = RT3883_SDRAM_BASE; soc_info->mem_size_min = RT3883_MEM_SIZE_MIN; soc_info->mem_size_max = RT3883_MEM_SIZE_MAX; - rt2880_pinmux_data = rt3883_pinmux_data; - ralink_soc = RT3883_SOC; + soc_info_ptr = soc_info; } |