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-rw-r--r--arch/arm/mach-shmobile/setup-r8a7740.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
new file mode 100644
index 00000000000..986dca6b3fa
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+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -0,0 +1,352 @@
+/*
+ * R8A7740 processor support
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Copyright (C) 2011 Kuninori Morimoto <kuninori.morimoto.gx@renesas.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; version 2 of the License.
+ *
+ * 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/delay.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/serial_sci.h>
+#include <linux/sh_timer.h>
+#include <mach/r8a7740.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+/* SCIFA0 */
+static struct plat_sci_port scif0_platform_data = {
+ .mapbase = 0xe6c40000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0c00)),
+};
+
+static struct platform_device scif0_device = {
+ .name = "sh-sci",
+ .id = 0,
+ .dev = {
+ .platform_data = &scif0_platform_data,
+ },
+};
+
+/* SCIFA1 */
+static struct plat_sci_port scif1_platform_data = {
+ .mapbase = 0xe6c50000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0c20)),
+};
+
+static struct platform_device scif1_device = {
+ .name = "sh-sci",
+ .id = 1,
+ .dev = {
+ .platform_data = &scif1_platform_data,
+ },
+};
+
+/* SCIFA2 */
+static struct plat_sci_port scif2_platform_data = {
+ .mapbase = 0xe6c60000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0c40)),
+};
+
+static struct platform_device scif2_device = {
+ .name = "sh-sci",
+ .id = 2,
+ .dev = {
+ .platform_data = &scif2_platform_data,
+ },
+};
+
+/* SCIFA3 */
+static struct plat_sci_port scif3_platform_data = {
+ .mapbase = 0xe6c70000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0c60)),
+};
+
+static struct platform_device scif3_device = {
+ .name = "sh-sci",
+ .id = 3,
+ .dev = {
+ .platform_data = &scif3_platform_data,
+ },
+};
+
+/* SCIFA4 */
+static struct plat_sci_port scif4_platform_data = {
+ .mapbase = 0xe6c80000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0d20)),
+};
+
+static struct platform_device scif4_device = {
+ .name = "sh-sci",
+ .id = 4,
+ .dev = {
+ .platform_data = &scif4_platform_data,
+ },
+};
+
+/* SCIFA5 */
+static struct plat_sci_port scif5_platform_data = {
+ .mapbase = 0xe6cb0000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0d40)),
+};
+
+static struct platform_device scif5_device = {
+ .name = "sh-sci",
+ .id = 5,
+ .dev = {
+ .platform_data = &scif5_platform_data,
+ },
+};
+
+/* SCIFA6 */
+static struct plat_sci_port scif6_platform_data = {
+ .mapbase = 0xe6cc0000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x04c0)),
+};
+
+static struct platform_device scif6_device = {
+ .name = "sh-sci",
+ .id = 6,
+ .dev = {
+ .platform_data = &scif6_platform_data,
+ },
+};
+
+/* SCIFA7 */
+static struct plat_sci_port scif7_platform_data = {
+ .mapbase = 0xe6cd0000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFA,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x04e0)),
+};
+
+static struct platform_device scif7_device = {
+ .name = "sh-sci",
+ .id = 7,
+ .dev = {
+ .platform_data = &scif7_platform_data,
+ },
+};
+
+/* SCIFB */
+static struct plat_sci_port scifb_platform_data = {
+ .mapbase = 0xe6c30000,
+ .flags = UPF_BOOT_AUTOCONF,
+ .scscr = SCSCR_RE | SCSCR_TE,
+ .scbrr_algo_id = SCBRR_ALGO_4,
+ .type = PORT_SCIFB,
+ .irqs = SCIx_IRQ_MUXED(evt2irq(0x0d60)),
+};
+
+static struct platform_device scifb_device = {
+ .name = "sh-sci",
+ .id = 8,
+ .dev = {
+ .platform_data = &scifb_platform_data,
+ },
+};
+
+/* CMT */
+static struct sh_timer_config cmt10_platform_data = {
+ .name = "CMT10",
+ .channel_offset = 0x10,
+ .timer_bit = 0,
+ .clockevent_rating = 125,
+ .clocksource_rating = 125,
+};
+
+static struct resource cmt10_resources[] = {
+ [0] = {
+ .name = "CMT10",
+ .start = 0xe6138010,
+ .end = 0xe613801b,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = evt2irq(0x0b00),
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device cmt10_device = {
+ .name = "sh_cmt",
+ .id = 10,
+ .dev = {
+ .platform_data = &cmt10_platform_data,
+ },
+ .resource = cmt10_resources,
+ .num_resources = ARRAY_SIZE(cmt10_resources),
+};
+
+static struct platform_device *r8a7740_early_devices[] __initdata = {
+ &scif0_device,
+ &scif1_device,
+ &scif2_device,
+ &scif3_device,
+ &scif4_device,
+ &scif5_device,
+ &scif6_device,
+ &scif7_device,
+ &scifb_device,
+ &cmt10_device,
+};
+
+/* I2C */
+static struct resource i2c0_resources[] = {
+ [0] = {
+ .name = "IIC0",
+ .start = 0xfff20000,
+ .end = 0xfff20425 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = intcs_evt2irq(0xe00),
+ .end = intcs_evt2irq(0xe60),
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource i2c1_resources[] = {
+ [0] = {
+ .name = "IIC1",
+ .start = 0xe6c20000,
+ .end = 0xe6c20425 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = evt2irq(0x780), /* IIC1_ALI1 */
+ .end = evt2irq(0x7e0), /* IIC1_DTEI1 */
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device i2c0_device = {
+ .name = "i2c-sh_mobile",
+ .id = 0,
+ .resource = i2c0_resources,
+ .num_resources = ARRAY_SIZE(i2c0_resources),
+};
+
+static struct platform_device i2c1_device = {
+ .name = "i2c-sh_mobile",
+ .id = 1,
+ .resource = i2c1_resources,
+ .num_resources = ARRAY_SIZE(i2c1_resources),
+};
+
+static struct platform_device *r8a7740_late_devices[] __initdata = {
+ &i2c0_device,
+ &i2c1_device,
+};
+
+#define ICCR 0x0004
+#define ICSTART 0x0070
+
+#define i2c_read(reg, offset) ioread8(reg + offset)
+#define i2c_write(reg, offset, data) iowrite8(data, reg + offset)
+
+/*
+ * r8a7740 chip has lasting errata on I2C I/O pad reset.
+ * this is work-around for it.
+ */
+static void r8a7740_i2c_workaround(struct platform_device *pdev)
+{
+ struct resource *res;
+ void __iomem *reg;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (unlikely(!res)) {
+ pr_err("r8a7740 i2c workaround fail (cannot find resource)\n");
+ return;
+ }
+
+ reg = ioremap(res->start, resource_size(res));
+ if (unlikely(!reg)) {
+ pr_err("r8a7740 i2c workaround fail (cannot map IO)\n");
+ return;
+ }
+
+ i2c_write(reg, ICCR, i2c_read(reg, ICCR) | 0x80);
+ i2c_read(reg, ICCR); /* dummy read */
+
+ i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10);
+ i2c_read(reg, ICSTART); /* dummy read */
+
+ mdelay(100);
+
+ i2c_write(reg, ICCR, 0x01);
+ i2c_read(reg, ICCR);
+ i2c_write(reg, ICSTART, 0x00);
+ i2c_read(reg, ICSTART);
+
+ i2c_write(reg, ICCR, 0x10);
+ mdelay(100);
+ i2c_write(reg, ICCR, 0x00);
+ mdelay(100);
+ i2c_write(reg, ICCR, 0x10);
+ mdelay(100);
+
+ iounmap(reg);
+}
+
+void __init r8a7740_add_standard_devices(void)
+{
+ /* I2C work-around */
+ r8a7740_i2c_workaround(&i2c0_device);
+ r8a7740_i2c_workaround(&i2c1_device);
+
+ platform_add_devices(r8a7740_early_devices,
+ ARRAY_SIZE(r8a7740_early_devices));
+ platform_add_devices(r8a7740_late_devices,
+ ARRAY_SIZE(r8a7740_late_devices));
+}
+
+void __init r8a7740_add_early_devices(void)
+{
+ early_platform_add_devices(r8a7740_early_devices,
+ ARRAY_SIZE(r8a7740_early_devices));
+}