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8c1de5e08b
Putting zero length array at the end of struct is a common technique to embed arbitrary length of members. There is no good reason to let regmap_alloc_count() branch by "if (count <= 1)". As far as I understood the code, regmap->base is an alias of regmap->ranges[0].start, but it is not helpful but make the code just ugly. Rename regmap_alloc_count() to regmap_alloc() because the _count suffix seems pointless. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: fixup cpu_info-rcar.c] Signed-off-by: Tom Rini <trini@konsulko.com>
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
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*
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* Copyright (C) 2013,2014 Renesas Electronics Corporation
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*/
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#include <common.h>
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#include <asm/io.h>
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#define PRR_MASK 0x7fff
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#define R8A7796_REV_1_0 0x5200
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#define R8A7796_REV_1_1 0x5210
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static u32 rmobile_get_prr(void);
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u32 rmobile_get_cpu_type(void)
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{
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return (rmobile_get_prr() & 0x00007F00) >> 8;
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}
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u32 rmobile_get_cpu_rev_integer(void)
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{
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const u32 prr = rmobile_get_prr();
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if ((prr & PRR_MASK) == R8A7796_REV_1_1)
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return 1;
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else
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return ((prr & 0x000000F0) >> 4) + 1;
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}
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u32 rmobile_get_cpu_rev_fraction(void)
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{
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const u32 prr = rmobile_get_prr();
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if ((prr & PRR_MASK) == R8A7796_REV_1_1)
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return 1;
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else
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return prr & 0x0000000F;
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}
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#if !CONFIG_IS_ENABLED(DM) || !CONFIG_IS_ENABLED(SYSCON)
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static u32 rmobile_get_prr(void)
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{
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/*
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* On RCar/RMobile Gen2 and older systems, the PRR is always
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* located at the address below. On newer systems, the PRR
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* may be located at different address, but that information
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* is obtained from DT. This code will be removed when all
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* of the older systems get converted to DM and OF control.
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*/
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return readl(0xFF000044);
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}
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#else
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#include <dm.h>
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#include <syscon.h>
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#include <regmap.h>
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struct renesas_prr_priv {
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fdt_addr_t regs;
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};
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enum {
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PRR_RCAR,
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};
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static u32 rmobile_get_prr(void)
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{
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struct regmap *map;
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map = syscon_get_regmap_by_driver_data(PRR_RCAR);
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if (!map) {
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printf("PRR regmap failed!\n");
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hang();
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}
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return readl(map->ranges[0].start);
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}
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static const struct udevice_id renesas_prr_ids[] = {
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{ .compatible = "renesas,prr", .data = PRR_RCAR },
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{ }
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};
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U_BOOT_DRIVER(renesas_prr) = {
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.name = "renesas_prr",
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.id = UCLASS_SYSCON,
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.of_match = renesas_prr_ids,
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.flags = DM_FLAG_PRE_RELOC,
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};
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#endif
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