patch-2.4.4 linux/arch/mips/ite-boards/generic/it8172_cir.c

• Lines: 172
• Date: Fri Apr 13 20:26:07 2001
• Orig file: v2.4.3/linux/arch/mips/ite-boards/generic/it8172_cir.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.3/linux/arch/mips/ite-boards/generic/it8172_cir.c linux/arch/mips/ite-boards/generic/it8172_cir.c
@@ -0,0 +1,171 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *	IT8172 Consumer IR port generic routines.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *         	ppopov@mvista.com or support@mvista.com
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/config.h>
+
+#ifdef CONFIG_IT8172_CIR
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/it8172/it8172.h>
+#include <asm/it8172/it8172_cir.h>
+
+
+volatile struct it8172_cir_regs *cir_regs[NUM_CIR_PORTS] = {
+	(volatile struct it8172_cir_regs *)(KSEG1ADDR(IT8172_PCI_IO_BASE + IT_CIR0_BASE)),
+	(volatile struct it8172_cir_regs *)(KSEG1ADDR(IT8172_PCI_IO_BASE + IT_CIR1_BASE))};
+
+
+/*
+ * Initialize Consumer IR Port.
+ */
+int cir_port_init(struct cir_port *cir)
+{
+	int port = cir->port;
+	unsigned char data;
+
+	/* set baud rate */
+	cir_regs[port]->bdlr = cir->baud_rate & 0xff;
+	cir_regs[port]->bdhr = (cir->baud_rate >> 8) & 0xff;
+
+	/* set receiver control register */
+	cir_regs[port]->rcr = (CIR_SET_RDWOS(cir->rdwos) | CIR_SET_RXDCR(cir->rxdcr));
+
+	/* set carrier frequency register */
+	cir_regs[port]->cfr = (CIR_SET_CF(cir->cfq) | CIR_SET_HS(cir->hcfs));
+
+	/* set fifo threshold */
+	data = cir_regs[port]->mstcr & 0xf3;
+	data |= CIR_SET_FIFO_TL(cir->fifo_tl);
+	cir_regs[port]->mstcr = data;
+
+	clear_fifo(cir);
+	enable_receiver(cir);
+	disable_rx_demodulation(cir);
+
+	set_rx_active(cir);
+	int_enable(cir);
+	rx_int_enable(cir);
+
+	return 0;
+}
+
+
+void clear_fifo(struct cir_port *cir)
+{
+	cir_regs[cir->port]->mstcr |= CIR_FIFO_CLEAR;
+}
+
+void enable_receiver(struct cir_port *cir)
+{
+	cir_regs[cir->port]->rcr |= CIR_RXEN;
+}
+
+void disable_receiver(struct cir_port *cir)
+{
+	cir_regs[cir->port]->rcr &= ~CIR_RXEN;
+}
+
+void enable_rx_demodulation(struct cir_port *cir)
+{
+	cir_regs[cir->port]->rcr |= CIR_RXEND;
+}
+
+void disable_rx_demodulation(struct cir_port *cir)
+{
+	cir_regs[cir->port]->rcr &= ~CIR_RXEND;
+}
+
+void set_rx_active(struct cir_port *cir)
+{
+	cir_regs[cir->port]->rcr |= CIR_RXACT;
+}
+
+void int_enable(struct cir_port *cir)
+{
+	cir_regs[cir->port]->ier |= CIR_IEC;
+}
+
+void rx_int_enable(struct cir_port *cir)
+{
+	cir_regs[cir->port]->ier |= CIR_RDAIE;
+}
+
+void dump_regs(struct cir_port *cir)
+{
+	printk("mstcr %x ier %x iir %x cfr %x rcr %x tcr %x tfsr %x rfsr %x\n",
+	cir_regs[cir->port]->mstcr,
+	cir_regs[cir->port]->ier,
+	cir_regs[cir->port]->iir,
+	cir_regs[cir->port]->cfr,
+	cir_regs[cir->port]->rcr,
+	cir_regs[cir->port]->tcr,
+	cir_regs[cir->port]->tfsr,
+	cir_regs[cir->port]->rfsr);
+
+	while (cir_regs[cir->port]->iir & CIR_RDAI) {
+		printk("data %x\n", cir_regs[cir->port]->dr);
+	}
+}
+
+void dump_reg_addr(struct cir_port *cir)
+{
+	printk("dr %x mstcr %x ier %x iir %x cfr %x rcr %x tcr %x bdlr %x bdhr %x tfsr %x rfsr %x\n",
+	(unsigned)&cir_regs[cir->port]->dr,
+	(unsigned)&cir_regs[cir->port]->mstcr,
+	(unsigned)&cir_regs[cir->port]->ier,
+	(unsigned)&cir_regs[cir->port]->iir,
+	(unsigned)&cir_regs[cir->port]->cfr,
+	(unsigned)&cir_regs[cir->port]->rcr,
+	(unsigned)&cir_regs[cir->port]->tcr,
+	(unsigned)&cir_regs[cir->port]->bdlr,
+	(unsigned)&cir_regs[cir->port]->bdhr,
+	(unsigned)&cir_regs[cir->port]->tfsr,
+	(unsigned)&cir_regs[cir->port]->rfsr);
+}
+
+int cir_get_rx_count(struct cir_port *cir)
+{
+	return cir_regs[cir->port]->rfsr & CIR_RXFBC_MASK;
+}
+
+char cir_read_data(struct cir_port *cir)
+{
+	return cir_regs[cir->port]->dr;
+}
+
+char get_int_status(struct cir_port *cir)
+{
+	return cir_regs[cir->port]->iir;
+}
+#endif