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https://github.com/torvalds/linux
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7b9334215f
The Broadcom BCM3368 Cable Modem SoC is extremely similar to the existing BCM63xx DSL SoCs, in particular BCM6358, therefore little effort in the existing code base is required to get it supported. This patch adds support for the following on-chip peripherals: - two UARTS - GPIO - Ethernet - SPI - PCI - NOR Flash The most noticeable difference with 3368 is that it has its peripheral register at 0xfff8_0000 we check that separately in ioremap.h. Since 3368 is identical to 6358 for its clock and reset bits, we use them verbatim. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: cernekee@gmail.com Cc: jogo@openwrt.org Patchwork: https://patchwork.linux-mips.org/patch/5499/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
278 lines
8 KiB
C
278 lines
8 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
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*/
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <bcm63xx_cpu.h>
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#include <bcm63xx_io.h>
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#include <bcm63xx_regs.h>
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#include <bcm63xx_reset.h>
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#define __GEN_RESET_BITS_TABLE(__cpu) \
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[BCM63XX_RESET_SPI] = BCM## __cpu ##_RESET_SPI, \
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[BCM63XX_RESET_ENET] = BCM## __cpu ##_RESET_ENET, \
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[BCM63XX_RESET_USBH] = BCM## __cpu ##_RESET_USBH, \
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[BCM63XX_RESET_USBD] = BCM## __cpu ##_RESET_USBD, \
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[BCM63XX_RESET_DSL] = BCM## __cpu ##_RESET_DSL, \
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[BCM63XX_RESET_SAR] = BCM## __cpu ##_RESET_SAR, \
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[BCM63XX_RESET_EPHY] = BCM## __cpu ##_RESET_EPHY, \
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[BCM63XX_RESET_ENETSW] = BCM## __cpu ##_RESET_ENETSW, \
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[BCM63XX_RESET_PCM] = BCM## __cpu ##_RESET_PCM, \
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[BCM63XX_RESET_MPI] = BCM## __cpu ##_RESET_MPI, \
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[BCM63XX_RESET_PCIE] = BCM## __cpu ##_RESET_PCIE, \
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[BCM63XX_RESET_PCIE_EXT] = BCM## __cpu ##_RESET_PCIE_EXT,
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#define BCM3368_RESET_SPI SOFTRESET_3368_SPI_MASK
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#define BCM3368_RESET_ENET SOFTRESET_3368_ENET_MASK
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#define BCM3368_RESET_USBH 0
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#define BCM3368_RESET_USBD SOFTRESET_3368_USBS_MASK
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#define BCM3368_RESET_DSL 0
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#define BCM3368_RESET_SAR 0
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#define BCM3368_RESET_EPHY SOFTRESET_3368_EPHY_MASK
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#define BCM3368_RESET_ENETSW 0
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#define BCM3368_RESET_PCM SOFTRESET_3368_PCM_MASK
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#define BCM3368_RESET_MPI SOFTRESET_3368_MPI_MASK
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#define BCM3368_RESET_PCIE 0
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#define BCM3368_RESET_PCIE_EXT 0
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#define BCM6328_RESET_SPI SOFTRESET_6328_SPI_MASK
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#define BCM6328_RESET_ENET 0
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#define BCM6328_RESET_USBH SOFTRESET_6328_USBH_MASK
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#define BCM6328_RESET_USBD SOFTRESET_6328_USBS_MASK
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#define BCM6328_RESET_DSL 0
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#define BCM6328_RESET_SAR SOFTRESET_6328_SAR_MASK
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#define BCM6328_RESET_EPHY SOFTRESET_6328_EPHY_MASK
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#define BCM6328_RESET_ENETSW SOFTRESET_6328_ENETSW_MASK
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#define BCM6328_RESET_PCM SOFTRESET_6328_PCM_MASK
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#define BCM6328_RESET_MPI 0
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#define BCM6328_RESET_PCIE \
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(SOFTRESET_6328_PCIE_MASK | \
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SOFTRESET_6328_PCIE_CORE_MASK | \
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SOFTRESET_6328_PCIE_HARD_MASK)
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#define BCM6328_RESET_PCIE_EXT SOFTRESET_6328_PCIE_EXT_MASK
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#define BCM6338_RESET_SPI SOFTRESET_6338_SPI_MASK
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#define BCM6338_RESET_ENET SOFTRESET_6338_ENET_MASK
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#define BCM6338_RESET_USBH SOFTRESET_6338_USBH_MASK
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#define BCM6338_RESET_USBD SOFTRESET_6338_USBS_MASK
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#define BCM6338_RESET_DSL SOFTRESET_6338_ADSL_MASK
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#define BCM6338_RESET_SAR SOFTRESET_6338_SAR_MASK
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#define BCM6338_RESET_EPHY 0
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#define BCM6338_RESET_ENETSW 0
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#define BCM6338_RESET_PCM 0
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#define BCM6338_RESET_MPI 0
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#define BCM6338_RESET_PCIE 0
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#define BCM6338_RESET_PCIE_EXT 0
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#define BCM6348_RESET_SPI SOFTRESET_6348_SPI_MASK
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#define BCM6348_RESET_ENET SOFTRESET_6348_ENET_MASK
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#define BCM6348_RESET_USBH SOFTRESET_6348_USBH_MASK
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#define BCM6348_RESET_USBD SOFTRESET_6348_USBS_MASK
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#define BCM6348_RESET_DSL SOFTRESET_6348_ADSL_MASK
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#define BCM6348_RESET_SAR SOFTRESET_6348_SAR_MASK
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#define BCM6348_RESET_EPHY 0
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#define BCM6348_RESET_ENETSW 0
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#define BCM6348_RESET_PCM 0
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#define BCM6348_RESET_MPI 0
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#define BCM6348_RESET_PCIE 0
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#define BCM6348_RESET_PCIE_EXT 0
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#define BCM6358_RESET_SPI SOFTRESET_6358_SPI_MASK
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#define BCM6358_RESET_ENET SOFTRESET_6358_ENET_MASK
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#define BCM6358_RESET_USBH SOFTRESET_6358_USBH_MASK
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#define BCM6358_RESET_USBD 0
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#define BCM6358_RESET_DSL SOFTRESET_6358_ADSL_MASK
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#define BCM6358_RESET_SAR SOFTRESET_6358_SAR_MASK
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#define BCM6358_RESET_EPHY SOFTRESET_6358_EPHY_MASK
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#define BCM6358_RESET_ENETSW 0
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#define BCM6358_RESET_PCM SOFTRESET_6358_PCM_MASK
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#define BCM6358_RESET_MPI SOFTRESET_6358_MPI_MASK
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#define BCM6358_RESET_PCIE 0
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#define BCM6358_RESET_PCIE_EXT 0
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#define BCM6362_RESET_SPI SOFTRESET_6362_SPI_MASK
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#define BCM6362_RESET_ENET 0
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#define BCM6362_RESET_USBH SOFTRESET_6362_USBH_MASK
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#define BCM6362_RESET_USBD SOFTRESET_6362_USBS_MASK
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#define BCM6362_RESET_DSL 0
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#define BCM6362_RESET_SAR SOFTRESET_6362_SAR_MASK
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#define BCM6362_RESET_EPHY SOFTRESET_6362_EPHY_MASK
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#define BCM6362_RESET_ENETSW SOFTRESET_6362_ENETSW_MASK
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#define BCM6362_RESET_PCM SOFTRESET_6362_PCM_MASK
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#define BCM6362_RESET_MPI 0
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#define BCM6362_RESET_PCIE (SOFTRESET_6362_PCIE_MASK | \
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SOFTRESET_6362_PCIE_CORE_MASK)
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#define BCM6362_RESET_PCIE_EXT SOFTRESET_6362_PCIE_EXT_MASK
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#define BCM6368_RESET_SPI SOFTRESET_6368_SPI_MASK
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#define BCM6368_RESET_ENET 0
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#define BCM6368_RESET_USBH SOFTRESET_6368_USBH_MASK
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#define BCM6368_RESET_USBD SOFTRESET_6368_USBS_MASK
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#define BCM6368_RESET_DSL 0
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#define BCM6368_RESET_SAR SOFTRESET_6368_SAR_MASK
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#define BCM6368_RESET_EPHY SOFTRESET_6368_EPHY_MASK
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#define BCM6368_RESET_ENETSW 0
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#define BCM6368_RESET_PCM SOFTRESET_6368_PCM_MASK
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#define BCM6368_RESET_MPI SOFTRESET_6368_MPI_MASK
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#define BCM6368_RESET_PCIE 0
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#define BCM6368_RESET_PCIE_EXT 0
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#ifdef BCMCPU_RUNTIME_DETECT
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/*
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* core reset bits
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*/
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static const u32 bcm3368_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(3368)
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};
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static const u32 bcm6328_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6328)
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};
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static const u32 bcm6338_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6338)
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};
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static const u32 bcm6348_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6348)
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};
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static const u32 bcm6358_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6358)
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};
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static const u32 bcm6362_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6362)
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};
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static const u32 bcm6368_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6368)
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};
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const u32 *bcm63xx_reset_bits;
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static int reset_reg;
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static int __init bcm63xx_reset_bits_init(void)
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{
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if (BCMCPU_IS_3368()) {
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reset_reg = PERF_SOFTRESET_6358_REG;
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bcm63xx_reset_bits = bcm3368_reset_bits;
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} else if (BCMCPU_IS_6328()) {
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reset_reg = PERF_SOFTRESET_6328_REG;
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bcm63xx_reset_bits = bcm6328_reset_bits;
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} else if (BCMCPU_IS_6338()) {
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reset_reg = PERF_SOFTRESET_REG;
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bcm63xx_reset_bits = bcm6338_reset_bits;
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} else if (BCMCPU_IS_6348()) {
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reset_reg = PERF_SOFTRESET_REG;
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bcm63xx_reset_bits = bcm6348_reset_bits;
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} else if (BCMCPU_IS_6358()) {
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reset_reg = PERF_SOFTRESET_6358_REG;
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bcm63xx_reset_bits = bcm6358_reset_bits;
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} else if (BCMCPU_IS_6362()) {
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reset_reg = PERF_SOFTRESET_6362_REG;
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bcm63xx_reset_bits = bcm6362_reset_bits;
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} else if (BCMCPU_IS_6368()) {
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reset_reg = PERF_SOFTRESET_6368_REG;
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bcm63xx_reset_bits = bcm6368_reset_bits;
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}
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return 0;
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}
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#else
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#ifdef CONFIG_BCM63XX_CPU_3368
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(3368)
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};
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#define reset_reg PERF_SOFTRESET_6358_REG
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6328
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6328)
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};
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#define reset_reg PERF_SOFTRESET_6328_REG
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6338
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6338)
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};
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#define reset_reg PERF_SOFTRESET_REG
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6345
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static const u32 bcm63xx_reset_bits[] = { };
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#define reset_reg 0
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6348
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6348)
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};
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#define reset_reg PERF_SOFTRESET_REG
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6358
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6358)
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};
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#define reset_reg PERF_SOFTRESET_6358_REG
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6362
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6362)
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};
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#define reset_reg PERF_SOFTRESET_6362_REG
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#endif
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#ifdef CONFIG_BCM63XX_CPU_6368
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static const u32 bcm63xx_reset_bits[] = {
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__GEN_RESET_BITS_TABLE(6368)
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};
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#define reset_reg PERF_SOFTRESET_6368_REG
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#endif
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static int __init bcm63xx_reset_bits_init(void) { return 0; }
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#endif
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static DEFINE_SPINLOCK(reset_mutex);
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static void __bcm63xx_core_set_reset(u32 mask, int enable)
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{
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unsigned long flags;
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u32 val;
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if (!mask)
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return;
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spin_lock_irqsave(&reset_mutex, flags);
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val = bcm_perf_readl(reset_reg);
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if (enable)
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val &= ~mask;
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else
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val |= mask;
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bcm_perf_writel(val, reset_reg);
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spin_unlock_irqrestore(&reset_mutex, flags);
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}
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void bcm63xx_core_set_reset(enum bcm63xx_core_reset core, int reset)
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{
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__bcm63xx_core_set_reset(bcm63xx_reset_bits[core], reset);
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}
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EXPORT_SYMBOL(bcm63xx_core_set_reset);
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postcore_initcall(bcm63xx_reset_bits_init);
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