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committed b8b6069cf20x
/* * Sonics Silicon Backplane * Broadcom EXTIF core driver * * Copyright 2005, Broadcom Corporation * Copyright 2006, 2007, Michael Buesch <m@bues.ch> * Copyright 2006, 2007, Felix Fietkau <nbd@openwrt.org> * Copyright 2007, Aurelien Jarno <aurelien@aurel32.net> * * Licensed under the GNU/GPL. See COPYING for details. */static inline u32 extif_read32(struct ssb_extif *extif, u16 offset){ return ssb_read32(extif->dev, offset);}static inline void extif_write32(struct ssb_extif *extif, u16 offset, u32 value){ ssb_write32(extif->dev, offset, value);}static inline u32 extif_write32_masked(struct ssb_extif *extif, u16 offset, u32 mask, u32 value){ value &= mask; value |= extif_read32(extif, offset) & ~mask; extif_write32(extif, offset, value); return value;}static bool serial_exists(u8 *regs){ u8 save_mcr, msr = 0; if (regs) { save_mcr = regs[UART_MCR]; regs[UART_MCR] = (UART_MCR_LOOP | UART_MCR_OUT2 | UART_MCR_RTS); msr = regs[UART_MSR] & (UART_MSR_DCD | UART_MSR_RI | UART_MSR_CTS | UART_MSR_DSR); regs[UART_MCR] = save_mcr; } return (msr == (UART_MSR_DCD | UART_MSR_CTS));}int ssb_extif_serial_init(struct ssb_extif *extif, struct ssb_serial_port *ports){ u32 i, nr_ports = 0; /* Disable GPIO interrupt initially */ extif_write32(extif, SSB_EXTIF_GPIO_INTPOL, 0); extif_write32(extif, SSB_EXTIF_GPIO_INTMASK, 0); for (i = 0; i < 2; i++) { void __iomem *uart_regs; uart_regs = ioremap_nocache(SSB_EUART, 16); if (uart_regs) { uart_regs += (i * 8); if (serial_exists(uart_regs) && ports) { extif_write32(extif, SSB_EXTIF_GPIO_INTMASK, 2); nr_ports++; ports[i].regs = uart_regs; ports[i].irq = 2; ports[i].baud_base = 13500000; ports[i].reg_shift = 0; } iounmap(uart_regs); } } return nr_ports;}/* CONFIG_SSB_SERIAL */void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns){ u32 tmp; /* Initialize extif so we can get to the LEDs and external UART */ extif_write32(extif, SSB_EXTIF_PROG_CFG, SSB_EXTCFG_EN);