arch/arm/mach-shmobile/setup-r8a7790.c

   1 /*
   2  * r8a7790 processor support
   3  *
   4  * Copyright (C) 2013  Renesas Solutions Corp.
   5  * Copyright (C) 2013  Magnus Damm
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include <linux/irq.h>
  22 #include <linux/irqchip.h>
  23 #include <linux/kernel.h>
  24 #include <linux/of_platform.h>
  25 #include <linux/serial_sci.h>
  26 #include <linux/platform_data/irq-renesas-irqc.h>
  27 #include <mach/common.h>
  28 #include <mach/irqs.h>
  29 #include <mach/r8a7790.h>
  30 #include <asm/mach/arch.h>
  31
  32 static const struct resource pfc_resources[] = {
  33         DEFINE_RES_MEM(0xe6060000, 0x250),
  34         DEFINE_RES_MEM(0xe6050000, 0x5050),
  35 };
  36
  37 void __init r8a7790_pinmux_init(void)
  38 {
  39         platform_device_register_simple("pfc-r8a7790", -1, pfc_resources,
  40                                         ARRAY_SIZE(pfc_resources));
  41 }
  42
  43 #define SCIF_COMMON(scif_type, baseaddr, irq)                   \
  44         .type           = scif_type,                            \
  45         .mapbase        = baseaddr,                             \
  46         .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,      \
  47         .irqs           = SCIx_IRQ_MUXED(irq)
  48
  49 #define SCIFA_DATA(index, baseaddr, irq)                \
  50 [index] = {                                             \
  51         SCIF_COMMON(PORT_SCIFA, baseaddr, irq),         \
  52         .scbrr_algo_id  = SCBRR_ALGO_4,                 \
  53         .scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE0,      \
  54 }
  55
  56 #define SCIFB_DATA(index, baseaddr, irq)        \
  57 [index] = {                                     \
  58         SCIF_COMMON(PORT_SCIFB, baseaddr, irq), \
  59         .scbrr_algo_id  = SCBRR_ALGO_4,         \
  60         .scscr = SCSCR_RE | SCSCR_TE,           \
  61 }
  62
  63 #define SCIF_DATA(index, baseaddr, irq)         \
  64 [index] = {                                             \
  65         SCIF_COMMON(PORT_SCIF, baseaddr, irq),          \
  66         .scbrr_algo_id  = SCBRR_ALGO_2,                 \
  67         .scscr = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,      \
  68 }
  69
  70 enum { SCIFA0, SCIFA1, SCIFB0, SCIFB1, SCIFB2, SCIFA2, SCIF0, SCIF1 };
  71
  72 static const struct plat_sci_port scif[] = {
  73         SCIFA_DATA(SCIFA0, 0xe6c40000, gic_spi(144)), /* SCIFA0 */
  74         SCIFA_DATA(SCIFA1, 0xe6c50000, gic_spi(145)), /* SCIFA1 */
  75         SCIFB_DATA(SCIFB0, 0xe6c20000, gic_spi(148)), /* SCIFB0 */
  76         SCIFB_DATA(SCIFB1, 0xe6c30000, gic_spi(149)), /* SCIFB1 */
  77         SCIFB_DATA(SCIFB2, 0xe6ce0000, gic_spi(150)), /* SCIFB2 */
  78         SCIFA_DATA(SCIFA2, 0xe6c60000, gic_spi(151)), /* SCIFA2 */
  79         SCIF_DATA(SCIF0, 0xe6e60000, gic_spi(152)), /* SCIF0 */
  80         SCIF_DATA(SCIF1, 0xe6e68000, gic_spi(153)), /* SCIF1 */
  81 };
  82
  83 static inline void r8a7790_register_scif(int idx)
  84 {
  85         platform_device_register_data(&platform_bus, "sh-sci", idx, &scif[idx],
  86                                       sizeof(struct plat_sci_port));
  87 }
  88
  89 static struct renesas_irqc_config irqc0_data = {
  90         .irq_base = irq_pin(0), /* IRQ0 -> IRQ3 */
  91 };
  92
  93 static struct resource irqc0_resources[] = {
  94         DEFINE_RES_MEM(0xe61c0000, 0x200), /* IRQC Event Detector Block_0 */
  95         DEFINE_RES_IRQ(gic_spi(0)), /* IRQ0 */
  96         DEFINE_RES_IRQ(gic_spi(1)), /* IRQ1 */
  97         DEFINE_RES_IRQ(gic_spi(2)), /* IRQ2 */
  98         DEFINE_RES_IRQ(gic_spi(3)), /* IRQ3 */
  99 };
 100
 101 #define r8a7790_register_irqc(idx)                                      \
 102         platform_device_register_resndata(&platform_bus, "renesas_irqc", \
 103                                           idx, irqc##idx##_resources,   \
 104                                           ARRAY_SIZE(irqc##idx##_resources), \
 105                                           &irqc##idx##_data,            \
 106                                           sizeof(struct renesas_irqc_config))
 107
 108 void __init r8a7790_add_standard_devices(void)
 109 {
 110         r8a7790_register_scif(SCIFA0);
 111         r8a7790_register_scif(SCIFA1);
 112         r8a7790_register_scif(SCIFB0);
 113         r8a7790_register_scif(SCIFB1);
 114         r8a7790_register_scif(SCIFB2);
 115         r8a7790_register_scif(SCIFA2);
 116         r8a7790_register_scif(SCIF0);
 117         r8a7790_register_scif(SCIF1);
 118         r8a7790_register_irqc(0);
 119 }
 120
 121 void __init r8a7790_timer_init(void)
 122 {
 123         void __iomem *cntcr;
 124
 125         /* make sure arch timer is started by setting bit 0 of CNTCT */
 126         cntcr = ioremap(0xe6080000, PAGE_SIZE);
 127         iowrite32(1, cntcr);
 128         iounmap(cntcr);
 129
 130         shmobile_timer_init();
 131 }
 132
 133 #ifdef CONFIG_USE_OF
 134 void __init r8a7790_add_standard_devices_dt(void)
 135 {
 136         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 137 }
 138
 139 static const char *r8a7790_boards_compat_dt[] __initdata = {
 140         "renesas,r8a7790",
 141         NULL,
 142 };
 143
 144 DT_MACHINE_START(R8A7790_DT, "Generic R8A7790 (Flattened Device Tree)")
 145         .init_irq       = irqchip_init,
 146         .init_machine   = r8a7790_add_standard_devices_dt,
 147         .init_time      = r8a7790_timer_init,
 148         .dt_compat      = r8a7790_boards_compat_dt,
 149 MACHINE_END
 150 #endif /* CONFIG_USE_OF */