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-rw-r--r--arch/arm/mach-msm/Makefile1
-rw-r--r--arch/arm/mach-msm/proc_comm.c110
-rw-r--r--arch/arm/mach-msm/proc_comm.h165
3 files changed, 276 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index d12f2365585..ae96ffff494 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -1,4 +1,5 @@
1obj-y += io.o idle.o irq.o timer.o dma.o 1obj-y += io.o idle.o irq.o timer.o dma.o
2obj-y += proc_comm.o
2 3
3# Common code for board init 4# Common code for board init
4obj-y += common.o 5obj-y += common.o
diff --git a/arch/arm/mach-msm/proc_comm.c b/arch/arm/mach-msm/proc_comm.c
new file mode 100644
index 00000000000..915ee704ed3
--- /dev/null
+++ b/arch/arm/mach-msm/proc_comm.c
@@ -0,0 +1,110 @@
1/* arch/arm/mach-msm/proc_comm.c
2 *
3 * Copyright (C) 2007-2008 Google, Inc.
4 * Author: Brian Swetland <swetland@google.com>
5 *
6 * This software is licensed under the terms of the GNU General Public
7 * License version 2, as published by the Free Software Foundation, and
8 * may be copied, distributed, and modified under those terms.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 */
16
17#include <linux/delay.h>
18#include <linux/errno.h>
19#include <linux/io.h>
20#include <linux/spinlock.h>
21#include <mach/msm_iomap.h>
22#include <mach/system.h>
23
24#include "proc_comm.h"
25
26#define MSM_A2M_INT(n) (MSM_CSR_BASE + 0x400 + (n) * 4)
27
28static inline void notify_other_proc_comm(void)
29{
30 writel(1, MSM_A2M_INT(6));
31}
32
33#define APP_COMMAND 0x00
34#define APP_STATUS 0x04
35#define APP_DATA1 0x08
36#define APP_DATA2 0x0C
37
38#define MDM_COMMAND 0x10
39#define MDM_STATUS 0x14
40#define MDM_DATA1 0x18
41#define MDM_DATA2 0x1C
42
43static DEFINE_SPINLOCK(proc_comm_lock);
44
45/* The higher level SMD support will install this to
46 * provide a way to check for and handle modem restart.
47 */
48int (*msm_check_for_modem_crash)(void);
49
50/* Poll for a state change, checking for possible
51 * modem crashes along the way (so we don't wait
52 * forever while the ARM9 is blowing up).
53 *
54 * Return an error in the event of a modem crash and
55 * restart so the msm_proc_comm() routine can restart
56 * the operation from the beginning.
57 */
58static int proc_comm_wait_for(void __iomem *addr, unsigned value)
59{
60 for (;;) {
61 if (readl(addr) == value)
62 return 0;
63
64 if (msm_check_for_modem_crash)
65 if (msm_check_for_modem_crash())
66 return -EAGAIN;
67 }
68}
69
70int msm_proc_comm(unsigned cmd, unsigned *data1, unsigned *data2)
71{
72 void __iomem *base = MSM_SHARED_RAM_BASE;
73 unsigned long flags;
74 int ret;
75
76 spin_lock_irqsave(&proc_comm_lock, flags);
77
78 for (;;) {
79 if (proc_comm_wait_for(base + MDM_STATUS, PCOM_READY))
80 continue;
81
82 writel(cmd, base + APP_COMMAND);
83 writel(data1 ? *data1 : 0, base + APP_DATA1);
84 writel(data2 ? *data2 : 0, base + APP_DATA2);
85
86 notify_other_proc_comm();
87
88 if (proc_comm_wait_for(base + APP_COMMAND, PCOM_CMD_DONE))
89 continue;
90
91 if (readl(base + APP_STATUS) != PCOM_CMD_FAIL) {
92 if (data1)
93 *data1 = readl(base + APP_DATA1);
94 if (data2)
95 *data2 = readl(base + APP_DATA2);
96 ret = 0;
97 } else {
98 ret = -EIO;
99 }
100 break;
101 }
102
103 writel(PCOM_CMD_IDLE, base + APP_COMMAND);
104
105 spin_unlock_irqrestore(&proc_comm_lock, flags);
106
107 return ret;
108}
109
110
diff --git a/arch/arm/mach-msm/proc_comm.h b/arch/arm/mach-msm/proc_comm.h
new file mode 100644
index 00000000000..834760f2569
--- /dev/null
+++ b/arch/arm/mach-msm/proc_comm.h
@@ -0,0 +1,165 @@
1/* arch/arm/mach-msm/proc_comm.h
2 *
3 * Copyright (c) 2007 QUALCOMM Incorporated
4 *
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 */
15
16#ifndef _ARCH_ARM_MACH_MSM_PROC_COMM_H_
17#define _ARCH_ARM_MACH_MSM_PROC_COMM_H_
18
19enum {
20 PCOM_CMD_IDLE = 0x0,
21 PCOM_CMD_DONE,
22 PCOM_RESET_APPS,
23 PCOM_RESET_CHIP,
24 PCOM_CONFIG_NAND_MPU,
25 PCOM_CONFIG_USB_CLKS,
26 PCOM_GET_POWER_ON_STATUS,
27 PCOM_GET_WAKE_UP_STATUS,
28 PCOM_GET_BATT_LEVEL,
29 PCOM_CHG_IS_CHARGING,
30 PCOM_POWER_DOWN,
31 PCOM_USB_PIN_CONFIG,
32 PCOM_USB_PIN_SEL,
33 PCOM_SET_RTC_ALARM,
34 PCOM_NV_READ,
35 PCOM_NV_WRITE,
36 PCOM_GET_UUID_HIGH,
37 PCOM_GET_UUID_LOW,
38 PCOM_GET_HW_ENTROPY,
39 PCOM_RPC_GPIO_TLMM_CONFIG_REMOTE,
40 PCOM_CLKCTL_RPC_ENABLE,
41 PCOM_CLKCTL_RPC_DISABLE,
42 PCOM_CLKCTL_RPC_RESET,
43 PCOM_CLKCTL_RPC_SET_FLAGS,
44 PCOM_CLKCTL_RPC_SET_RATE,
45 PCOM_CLKCTL_RPC_MIN_RATE,
46 PCOM_CLKCTL_RPC_MAX_RATE,
47 PCOM_CLKCTL_RPC_RATE,
48 PCOM_CLKCTL_RPC_PLL_REQUEST,
49 PCOM_CLKCTL_RPC_ENABLED,
50 PCOM_VREG_SWITCH,
51 PCOM_VREG_SET_LEVEL,
52 PCOM_GPIO_TLMM_CONFIG_GROUP,
53 PCOM_GPIO_TLMM_UNCONFIG_GROUP,
54 PCOM_NV_WRITE_BYTES_4_7,
55 PCOM_CONFIG_DISP,
56 PCOM_GET_FTM_BOOT_COUNT,
57 PCOM_RPC_GPIO_TLMM_CONFIG_EX,
58 PCOM_PM_MPP_CONFIG,
59 PCOM_GPIO_IN,
60 PCOM_GPIO_OUT,
61 PCOM_RESET_MODEM,
62 PCOM_RESET_CHIP_IMM,
63 PCOM_PM_VID_EN,
64 PCOM_VREG_PULLDOWN,
65 PCOM_NUM_CMDS,
66};
67
68enum {
69 PCOM_INVALID_STATUS = 0x0,
70 PCOM_READY,
71 PCOM_CMD_RUNNING,
72 PCOM_CMD_SUCCESS,
73 PCOM_CMD_FAIL,
74};
75
76/* List of VREGs that support the Pull Down Resistor setting. */
77enum {
78 PM_VREG_PDOWN_MSMA_ID,
79 PM_VREG_PDOWN_MSMP_ID,
80 PM_VREG_PDOWN_MSME1_ID, /* Not supported in Panoramix */
81 PM_VREG_PDOWN_MSMC1_ID, /* Not supported in PM6620 */
82 PM_VREG_PDOWN_MSMC2_ID, /* Supported in PM7500 only */
83 PM_VREG_PDOWN_GP3_ID, /* Supported in PM7500 only */
84 PM_VREG_PDOWN_MSME2_ID, /* Supported in PM7500 and Panoramix only */
85 PM_VREG_PDOWN_GP4_ID, /* Supported in PM7500 only */
86 PM_VREG_PDOWN_GP1_ID, /* Supported in PM7500 only */
87 PM_VREG_PDOWN_TCXO_ID,
88 PM_VREG_PDOWN_PA_ID,
89 PM_VREG_PDOWN_RFTX_ID,
90 PM_VREG_PDOWN_RFRX1_ID,
91 PM_VREG_PDOWN_RFRX2_ID,
92 PM_VREG_PDOWN_SYNT_ID,
93 PM_VREG_PDOWN_WLAN_ID,
94 PM_VREG_PDOWN_USB_ID,
95 PM_VREG_PDOWN_MMC_ID,
96 PM_VREG_PDOWN_RUIM_ID,
97 PM_VREG_PDOWN_MSMC0_ID, /* Supported in PM6610 only */
98 PM_VREG_PDOWN_GP2_ID, /* Supported in PM7500 only */
99 PM_VREG_PDOWN_GP5_ID, /* Supported in PM7500 only */
100 PM_VREG_PDOWN_GP6_ID, /* Supported in PM7500 only */
101 PM_VREG_PDOWN_RF_ID,
102 PM_VREG_PDOWN_RF_VCO_ID,
103 PM_VREG_PDOWN_MPLL_ID,
104 PM_VREG_PDOWN_S2_ID,
105 PM_VREG_PDOWN_S3_ID,
106 PM_VREG_PDOWN_RFUBM_ID,
107
108 /* new for HAN */
109 PM_VREG_PDOWN_RF1_ID,
110 PM_VREG_PDOWN_RF2_ID,
111 PM_VREG_PDOWN_RFA_ID,
112 PM_VREG_PDOWN_CDC2_ID,
113 PM_VREG_PDOWN_RFTX2_ID,
114 PM_VREG_PDOWN_USIM_ID,
115 PM_VREG_PDOWN_USB2P6_ID,
116 PM_VREG_PDOWN_USB3P3_ID,
117 PM_VREG_PDOWN_INVALID_ID,
118
119 /* backward compatible enums only */
120 PM_VREG_PDOWN_CAM_ID = PM_VREG_PDOWN_GP1_ID,
121 PM_VREG_PDOWN_MDDI_ID = PM_VREG_PDOWN_GP2_ID,
122 PM_VREG_PDOWN_RUIM2_ID = PM_VREG_PDOWN_GP3_ID,
123 PM_VREG_PDOWN_AUX_ID = PM_VREG_PDOWN_GP4_ID,
124 PM_VREG_PDOWN_AUX2_ID = PM_VREG_PDOWN_GP5_ID,
125 PM_VREG_PDOWN_BT_ID = PM_VREG_PDOWN_GP6_ID,
126
127 PM_VREG_PDOWN_MSME_ID = PM_VREG_PDOWN_MSME1_ID,
128 PM_VREG_PDOWN_MSMC_ID = PM_VREG_PDOWN_MSMC1_ID,
129 PM_VREG_PDOWN_RFA1_ID = PM_VREG_PDOWN_RFRX2_ID,
130 PM_VREG_PDOWN_RFA2_ID = PM_VREG_PDOWN_RFTX2_ID,
131 PM_VREG_PDOWN_XO_ID = PM_VREG_PDOWN_TCXO_ID
132};
133
134/* gpio info for PCOM_RPC_GPIO_TLMM_CONFIG_EX */
135
136#define GPIO_ENABLE 0
137#define GPIO_DISABLE 1
138
139#define GPIO_INPUT 0
140#define GPIO_OUTPUT 1
141
142#define GPIO_NO_PULL 0
143#define GPIO_PULL_DOWN 1
144#define GPIO_KEEPER 2
145#define GPIO_PULL_UP 3
146
147#define GPIO_2MA 0
148#define GPIO_4MA 1
149#define GPIO_6MA 2
150#define GPIO_8MA 3
151#define GPIO_10MA 4
152#define GPIO_12MA 5
153#define GPIO_14MA 6
154#define GPIO_16MA 7
155
156#define PCOM_GPIO_CFG(gpio, func, dir, pull, drvstr) \
157 ((((gpio) & 0x3FF) << 4) | \
158 ((func) & 0xf) | \
159 (((dir) & 0x1) << 14) | \
160 (((pull) & 0x3) << 15) | \
161 (((drvstr) & 0xF) << 17))
162
163int msm_proc_comm(unsigned cmd, unsigned *data1, unsigned *data2);
164
165#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-25 13:32:59 -0500