diff options
Diffstat (limited to 'drivers/staging/nokia_h4p/nokia_uart.c')
| -rw-r--r-- | drivers/staging/nokia_h4p/nokia_uart.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/drivers/staging/nokia_h4p/nokia_uart.c b/drivers/staging/nokia_h4p/nokia_uart.c deleted file mode 100644 index 0fb57de4b750..000000000000 --- a/drivers/staging/nokia_h4p/nokia_uart.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * This file is part of Nokia H4P bluetooth driver - * - * Copyright (C) 2005, 2006 Nokia Corporation. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - */ - -#include <linux/serial_reg.h> -#include <linux/delay.h> -#include <linux/clk.h> - -#include <linux/io.h> - -#include "hci_h4p.h" - -inline void hci_h4p_outb(struct hci_h4p_info *info, unsigned int offset, u8 val) -{ - __raw_writeb(val, info->uart_base + (offset << 2)); -} - -inline u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset) -{ - return __raw_readb(info->uart_base + (offset << 2)); -} - -void hci_h4p_set_rts(struct hci_h4p_info *info, int active) -{ - u8 b; - - b = hci_h4p_inb(info, UART_MCR); - if (active) - b |= UART_MCR_RTS; - else - b &= ~UART_MCR_RTS; - hci_h4p_outb(info, UART_MCR, b); -} - -int hci_h4p_wait_for_cts(struct hci_h4p_info *info, int active, - int timeout_ms) -{ - unsigned long timeout; - int state; - - timeout = jiffies + msecs_to_jiffies(timeout_ms); - for (;;) { - state = hci_h4p_inb(info, UART_MSR) & UART_MSR_CTS; - if (active) { - if (state) - return 0; - } else { - if (!state) - return 0; - } - if (time_after(jiffies, timeout)) - return -ETIMEDOUT; - msleep(1); - } -} - -void __hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which) -{ - u8 lcr, b; - - lcr = hci_h4p_inb(info, UART_LCR); - hci_h4p_outb(info, UART_LCR, 0xbf); - b = hci_h4p_inb(info, UART_EFR); - if (on) - b |= which; - else - b &= ~which; - hci_h4p_outb(info, UART_EFR, b); - hci_h4p_outb(info, UART_LCR, lcr); -} - -void hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which) -{ - unsigned long flags; - - spin_lock_irqsave(&info->lock, flags); - __hci_h4p_set_auto_ctsrts(info, on, which); - spin_unlock_irqrestore(&info->lock, flags); -} - -void hci_h4p_change_speed(struct hci_h4p_info *info, unsigned long speed) -{ - unsigned int divisor; - u8 lcr, mdr1; - - BT_DBG("Setting speed %lu", speed); - - if (speed >= 460800) { - divisor = UART_CLOCK / 13 / speed; - mdr1 = 3; - } else { - divisor = UART_CLOCK / 16 / speed; - mdr1 = 0; - } - - /* Make sure UART mode is disabled */ - hci_h4p_outb(info, UART_OMAP_MDR1, 7); - - lcr = hci_h4p_inb(info, UART_LCR); - hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB); /* Set DLAB */ - hci_h4p_outb(info, UART_DLL, divisor & 0xff); /* Set speed */ - hci_h4p_outb(info, UART_DLM, divisor >> 8); - hci_h4p_outb(info, UART_LCR, lcr); - - /* Make sure UART mode is enabled */ - hci_h4p_outb(info, UART_OMAP_MDR1, mdr1); -} - -int hci_h4p_reset_uart(struct hci_h4p_info *info) -{ - int count = 0; - - /* Reset the UART */ - hci_h4p_outb(info, UART_OMAP_SYSC, UART_SYSC_OMAP_RESET); - while (!(hci_h4p_inb(info, UART_OMAP_SYSS) & UART_SYSS_RESETDONE)) { - if (count++ > 100) { - dev_err(info->dev, "hci_h4p: UART reset timeout\n"); - return -ENODEV; - } - udelay(1); - } - - return 0; -} - -void hci_h4p_store_regs(struct hci_h4p_info *info) -{ - u16 lcr = 0; - - lcr = hci_h4p_inb(info, UART_LCR); - hci_h4p_outb(info, UART_LCR, 0xBF); - info->dll = hci_h4p_inb(info, UART_DLL); - info->dlh = hci_h4p_inb(info, UART_DLM); - info->efr = hci_h4p_inb(info, UART_EFR); - hci_h4p_outb(info, UART_LCR, lcr); - info->mdr1 = hci_h4p_inb(info, UART_OMAP_MDR1); - info->ier = hci_h4p_inb(info, UART_IER); -} - -void hci_h4p_restore_regs(struct hci_h4p_info *info) -{ - u16 lcr = 0; - - hci_h4p_init_uart(info); - - hci_h4p_outb(info, UART_OMAP_MDR1, 7); - lcr = hci_h4p_inb(info, UART_LCR); - hci_h4p_outb(info, UART_LCR, 0xBF); - hci_h4p_outb(info, UART_DLL, info->dll); /* Set speed */ - hci_h4p_outb(info, UART_DLM, info->dlh); - hci_h4p_outb(info, UART_EFR, info->efr); - hci_h4p_outb(info, UART_LCR, lcr); - hci_h4p_outb(info, UART_OMAP_MDR1, info->mdr1); - hci_h4p_outb(info, UART_IER, info->ier); -} - -void hci_h4p_init_uart(struct hci_h4p_info *info) -{ - u8 mcr, efr; - - /* Enable and setup FIFO */ - hci_h4p_outb(info, UART_OMAP_MDR1, 0x00); - - hci_h4p_outb(info, UART_LCR, 0xbf); - efr = hci_h4p_inb(info, UART_EFR); - hci_h4p_outb(info, UART_EFR, UART_EFR_ECB); - hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB); - mcr = hci_h4p_inb(info, UART_MCR); - hci_h4p_outb(info, UART_MCR, UART_MCR_TCRTLR); - hci_h4p_outb(info, UART_FCR, UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | - (3 << 6) | (0 << 4)); - hci_h4p_outb(info, UART_LCR, 0xbf); - hci_h4p_outb(info, UART_TI752_TLR, 0xed); - hci_h4p_outb(info, UART_TI752_TCR, 0xef); - hci_h4p_outb(info, UART_EFR, efr); - hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB); - hci_h4p_outb(info, UART_MCR, 0x00); - hci_h4p_outb(info, UART_LCR, UART_LCR_WLEN8); - hci_h4p_outb(info, UART_IER, UART_IER_RDI); - hci_h4p_outb(info, UART_OMAP_SYSC, (1 << 0) | (1 << 2) | (2 << 3)); -} |