https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 6d796c50f84ca79f1722bb131799e5a5710c4700 authored by Linus Torvalds on 29 January 2023, 21:59:43 UTC
Linux 6.2-rc6
Linux 6.2-rc6
Tip revision: 6d796c5
pxa2xx.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/arm/mach-pxa/pxa2xx.c
*
* code specific to pxa2xx
*
* Copyright (C) 2008 Dmitry Baryshkov
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/io.h>
#include "pxa2xx-regs.h"
#include "mfp-pxa25x.h"
#include "generic.h"
#include "reset.h"
#include "smemc.h"
#include <linux/soc/pxa/smemc.h>
#include <linux/platform_data/irda-pxaficp.h>
void pxa2xx_clear_reset_status(unsigned int mask)
{
/* RESET_STATUS_* has a 1:1 mapping with RCSR */
RCSR = mask;
}
static unsigned long pxa2xx_mfp_fir[] = {
GPIO46_FICP_RXD,
GPIO47_FICP_TXD,
};
static unsigned long pxa2xx_mfp_sir[] = {
GPIO46_STUART_RXD,
GPIO47_STUART_TXD,
};
static unsigned long pxa2xx_mfp_off[] = {
GPIO46_GPIO | MFP_LPM_DRIVE_LOW,
GPIO47_GPIO | MFP_LPM_DRIVE_LOW,
};
void pxa2xx_transceiver_mode(struct device *dev, int mode)
{
if (mode & IR_OFF) {
pxa2xx_mfp_config(pxa2xx_mfp_off, ARRAY_SIZE(pxa2xx_mfp_off));
} else if (mode & IR_SIRMODE) {
pxa2xx_mfp_config(pxa2xx_mfp_sir, ARRAY_SIZE(pxa2xx_mfp_sir));
} else if (mode & IR_FIRMODE) {
pxa2xx_mfp_config(pxa2xx_mfp_fir, ARRAY_SIZE(pxa2xx_mfp_fir));
} else
BUG();
}
EXPORT_SYMBOL_GPL(pxa2xx_transceiver_mode);
#define MDCNFG_DRAC2(mdcnfg) (((mdcnfg) >> 21) & 0x3)
#define MDCNFG_DRAC0(mdcnfg) (((mdcnfg) >> 5) & 0x3)
int pxa2xx_smemc_get_sdram_rows(void)
{
static int sdram_rows;
unsigned int drac2 = 0, drac0 = 0;
u32 mdcnfg;
if (sdram_rows)
return sdram_rows;
mdcnfg = readl_relaxed(MDCNFG);
if (mdcnfg & (MDCNFG_DE2 | MDCNFG_DE3))
drac2 = MDCNFG_DRAC2(mdcnfg);
if (mdcnfg & (MDCNFG_DE0 | MDCNFG_DE1))
drac0 = MDCNFG_DRAC0(mdcnfg);
sdram_rows = 1 << (11 + max(drac0, drac2));
return sdram_rows;
}