1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * linux/arch/arm/mach-pxa/pxa2xx.c
 4 *
 5 * code specific to pxa2xx
 6 *
 7 * Copyright (C) 2008 Dmitry Baryshkov
 8 */
 9
10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/device.h>
13#include <linux/io.h>
14
15#include "pxa2xx-regs.h"
 
16#include "mfp-pxa25x.h"
17#include "generic.h"
18#include "reset.h"
19#include "smemc.h"
20#include <linux/soc/pxa/smemc.h>
21#include <linux/platform_data/irda-pxaficp.h>
22
23void pxa2xx_clear_reset_status(unsigned int mask)
24{
25	/* RESET_STATUS_* has a 1:1 mapping with RCSR */
26	RCSR = mask;
27}
28
29static unsigned long pxa2xx_mfp_fir[] = {
30	GPIO46_FICP_RXD,
31	GPIO47_FICP_TXD,
32};
33
34static unsigned long pxa2xx_mfp_sir[] = {
35	GPIO46_STUART_RXD,
36	GPIO47_STUART_TXD,
37};
38
39static unsigned long pxa2xx_mfp_off[] = {
40	GPIO46_GPIO | MFP_LPM_DRIVE_LOW,
41	GPIO47_GPIO | MFP_LPM_DRIVE_LOW,
42};
43
44void pxa2xx_transceiver_mode(struct device *dev, int mode)
45{
46	if (mode & IR_OFF) {
47		pxa2xx_mfp_config(pxa2xx_mfp_off, ARRAY_SIZE(pxa2xx_mfp_off));
48	} else if (mode & IR_SIRMODE) {
49		pxa2xx_mfp_config(pxa2xx_mfp_sir, ARRAY_SIZE(pxa2xx_mfp_sir));
50	} else if (mode & IR_FIRMODE) {
51		pxa2xx_mfp_config(pxa2xx_mfp_fir, ARRAY_SIZE(pxa2xx_mfp_fir));
52	} else
53		BUG();
54}
55EXPORT_SYMBOL_GPL(pxa2xx_transceiver_mode);
56
57#define MDCNFG_DRAC2(mdcnfg)	(((mdcnfg) >> 21) & 0x3)
58#define MDCNFG_DRAC0(mdcnfg)	(((mdcnfg) >> 5) & 0x3)
59
60int pxa2xx_smemc_get_sdram_rows(void)
61{
62	static int sdram_rows;
63	unsigned int drac2 = 0, drac0 = 0;
64	u32 mdcnfg;
65
66	if (sdram_rows)
67		return sdram_rows;
68
69	mdcnfg = readl_relaxed(MDCNFG);
70
71	if (mdcnfg & (MDCNFG_DE2 | MDCNFG_DE3))
72		drac2 = MDCNFG_DRAC2(mdcnfg);
73
74	if (mdcnfg & (MDCNFG_DE0 | MDCNFG_DE1))
75		drac0 = MDCNFG_DRAC0(mdcnfg);
76
77	sdram_rows = 1 << (11 + max(drac0, drac2));
78	return sdram_rows;
79}

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * linux/arch/arm/mach-pxa/pxa2xx.c
 4 *
 5 * code specific to pxa2xx
 6 *
 7 * Copyright (C) 2008 Dmitry Baryshkov
 8 */
 9
10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/device.h>
13#include <linux/io.h>
14
15#include <mach/hardware.h>
16#include <mach/pxa2xx-regs.h>
17#include "mfp-pxa25x.h"
18#include <mach/reset.h>
 
 
 
19#include <linux/platform_data/irda-pxaficp.h>
20
21void pxa2xx_clear_reset_status(unsigned int mask)
22{
23	/* RESET_STATUS_* has a 1:1 mapping with RCSR */
24	RCSR = mask;
25}
26
27static unsigned long pxa2xx_mfp_fir[] = {
28	GPIO46_FICP_RXD,
29	GPIO47_FICP_TXD,
30};
31
32static unsigned long pxa2xx_mfp_sir[] = {
33	GPIO46_STUART_RXD,
34	GPIO47_STUART_TXD,
35};
36
37static unsigned long pxa2xx_mfp_off[] = {
38	GPIO46_GPIO | MFP_LPM_DRIVE_LOW,
39	GPIO47_GPIO | MFP_LPM_DRIVE_LOW,
40};
41
42void pxa2xx_transceiver_mode(struct device *dev, int mode)
43{
44	if (mode & IR_OFF) {
45		pxa2xx_mfp_config(pxa2xx_mfp_off, ARRAY_SIZE(pxa2xx_mfp_off));
46	} else if (mode & IR_SIRMODE) {
47		pxa2xx_mfp_config(pxa2xx_mfp_sir, ARRAY_SIZE(pxa2xx_mfp_sir));
48	} else if (mode & IR_FIRMODE) {
49		pxa2xx_mfp_config(pxa2xx_mfp_fir, ARRAY_SIZE(pxa2xx_mfp_fir));
50	} else
51		BUG();
52}
53EXPORT_SYMBOL_GPL(pxa2xx_transceiver_mode);