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482c43419f
device_type is deprecated. There is no need to check for it in device driver code and no need to specify it in the device tree. Remove the property from stock .dts files and remove the check for it from device drivers. This change should be 100% backwards compatible with old device trees. Signed-off-by: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
153 lines
3.0 KiB
C
153 lines
3.0 KiB
C
/*
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* udbg serial input/output routines for the Marvell MV64x60 (Discovery).
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*
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* Author: Dale Farnsworth <dale@farnsworth.org>
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <sysdev/mv64x60.h>
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#define MPSC_0_CR1_OFFSET 0x000c
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#define MPSC_0_CR2_OFFSET 0x0010
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#define MPSC_CHR_2_TCS (1 << 9)
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#define MPSC_0_CHR_10_OFFSET 0x0030
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#define MPSC_INTR_CAUSE_OFF_0 0x0004
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#define MPSC_INTR_CAUSE_OFF_1 0x000c
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#define MPSC_INTR_CAUSE_RCC (1<<6)
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static void __iomem *mpsc_base;
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static void __iomem *mpsc_intr_cause;
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static void mv64x60_udbg_putc(char c)
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{
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if (c == '\n')
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mv64x60_udbg_putc('\r');
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while(in_le32(mpsc_base + MPSC_0_CR2_OFFSET) & MPSC_CHR_2_TCS)
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;
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out_le32(mpsc_base + MPSC_0_CR1_OFFSET, c);
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out_le32(mpsc_base + MPSC_0_CR2_OFFSET, MPSC_CHR_2_TCS);
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}
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static int mv64x60_udbg_testc(void)
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{
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return (in_le32(mpsc_intr_cause) & MPSC_INTR_CAUSE_RCC) != 0;
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}
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static int mv64x60_udbg_getc(void)
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{
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int cause = 0;
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int c;
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while (!mv64x60_udbg_testc())
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;
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c = in_8(mpsc_base + MPSC_0_CHR_10_OFFSET + 2);
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out_8(mpsc_base + MPSC_0_CHR_10_OFFSET + 2, c);
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out_le32(mpsc_intr_cause, cause & ~MPSC_INTR_CAUSE_RCC);
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return c;
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}
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static int mv64x60_udbg_getc_poll(void)
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{
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if (!mv64x60_udbg_testc())
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return -1;
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return mv64x60_udbg_getc();
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}
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static void mv64x60_udbg_init(void)
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{
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struct device_node *np, *mpscintr, *stdout = NULL;
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const char *path;
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const phandle *ph;
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struct resource r[2];
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const int *block_index;
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int intr_cause_offset;
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int err;
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path = of_get_property(of_chosen, "linux,stdout-path", NULL);
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if (!path)
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return;
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stdout = of_find_node_by_path(path);
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if (!stdout)
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return;
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for_each_compatible_node(np, NULL, "marvell,mv64360-mpsc") {
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if (np == stdout)
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break;
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}
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of_node_put(stdout);
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if (!np)
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return;
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block_index = of_get_property(np, "cell-index", NULL);
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if (!block_index)
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goto error;
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switch (*block_index) {
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case 0:
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intr_cause_offset = MPSC_INTR_CAUSE_OFF_0;
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break;
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case 1:
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intr_cause_offset = MPSC_INTR_CAUSE_OFF_1;
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break;
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default:
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goto error;
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}
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err = of_address_to_resource(np, 0, &r[0]);
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if (err)
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goto error;
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ph = of_get_property(np, "mpscintr", NULL);
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mpscintr = of_find_node_by_phandle(*ph);
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if (!mpscintr)
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goto error;
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err = of_address_to_resource(mpscintr, 0, &r[1]);
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of_node_put(mpscintr);
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if (err)
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goto error;
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of_node_put(np);
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mpsc_base = ioremap(r[0].start, resource_size(&r[0]));
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if (!mpsc_base)
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return;
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mpsc_intr_cause = ioremap(r[1].start, resource_size(&r[1]));
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if (!mpsc_intr_cause) {
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iounmap(mpsc_base);
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return;
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}
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mpsc_intr_cause += intr_cause_offset;
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udbg_putc = mv64x60_udbg_putc;
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udbg_getc = mv64x60_udbg_getc;
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udbg_getc_poll = mv64x60_udbg_getc_poll;
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return;
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error:
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of_node_put(np);
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}
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void mv64x60_init_early(void)
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{
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mv64x60_udbg_init();
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}
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