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qemu/hw/z2.c
Anthony Liguori b5ea932781 i2c: smbus: convert to QEMU Object Model 
This converts two types because smbus is implemented as a subclass of i2c.  It's
extremely difficult to convert these two independently.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27 10:50:47 -06:00

378 lines
9.3 KiB
C
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/*
* PXA270-based Zipit Z2 device
*
* Copyright (c) 2011 by Vasily Khoruzhick <anarsoul@gmail.com>
*
* Code is based on mainstone platform.
*
* This code is licensed under the GNU GPL v2.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "hw.h"
#include "pxa.h"
#include "arm-misc.h"
#include "devices.h"
#include "i2c.h"
#include "ssi.h"
#include "boards.h"
#include "sysemu.h"
#include "flash.h"
#include "blockdev.h"
#include "console.h"
#include "audio/audio.h"
#include "exec-memory.h"
#ifdef DEBUG_Z2
#define DPRINTF(fmt, ...) \
printf(fmt, ## __VA_ARGS__)
#else
#define DPRINTF(fmt, ...)
#endif
static struct keymap map[0x100] = {
[0 ... 0xff] = { -1, -1 },
[0x3b] = {0, 0}, /* Option = F1 */
[0xc8] = {0, 1}, /* Up */
[0xd0] = {0, 2}, /* Down */
[0xcb] = {0, 3}, /* Left */
[0xcd] = {0, 4}, /* Right */
[0xcf] = {0, 5}, /* End */
[0x0d] = {0, 6}, /* KPPLUS */
[0xc7] = {1, 0}, /* Home */
[0x10] = {1, 1}, /* Q */
[0x17] = {1, 2}, /* I */
[0x22] = {1, 3}, /* G */
[0x2d] = {1, 4}, /* X */
[0x1c] = {1, 5}, /* Enter */
[0x0c] = {1, 6}, /* KPMINUS */
[0xc9] = {2, 0}, /* PageUp */
[0x11] = {2, 1}, /* W */
[0x18] = {2, 2}, /* O */
[0x23] = {2, 3}, /* H */
[0x2e] = {2, 4}, /* C */
[0x38] = {2, 5}, /* LeftAlt */
[0xd1] = {3, 0}, /* PageDown */
[0x12] = {3, 1}, /* E */
[0x19] = {3, 2}, /* P */
[0x24] = {3, 3}, /* J */
[0x2f] = {3, 4}, /* V */
[0x2a] = {3, 5}, /* LeftShift */
[0x01] = {4, 0}, /* Esc */
[0x13] = {4, 1}, /* R */
[0x1e] = {4, 2}, /* A */
[0x25] = {4, 3}, /* K */
[0x30] = {4, 4}, /* B */
[0x1d] = {4, 5}, /* LeftCtrl */
[0x0f] = {5, 0}, /* Tab */
[0x14] = {5, 1}, /* T */
[0x1f] = {5, 2}, /* S */
[0x26] = {5, 3}, /* L */
[0x31] = {5, 4}, /* N */
[0x39] = {5, 5}, /* Space */
[0x3c] = {6, 0}, /* Stop = F2 */
[0x15] = {6, 1}, /* Y */
[0x20] = {6, 2}, /* D */
[0x0e] = {6, 3}, /* Backspace */
[0x32] = {6, 4}, /* M */
[0x33] = {6, 5}, /* Comma */
[0x3d] = {7, 0}, /* Play = F3 */
[0x16] = {7, 1}, /* U */
[0x21] = {7, 2}, /* F */
[0x2c] = {7, 3}, /* Z */
[0x27] = {7, 4}, /* Semicolon */
[0x34] = {7, 5}, /* Dot */
};
#define Z2_RAM_SIZE 0x02000000
#define Z2_FLASH_BASE 0x00000000
#define Z2_FLASH_SIZE 0x00800000
static struct arm_boot_info z2_binfo = {
.loader_start = PXA2XX_SDRAM_BASE,
.ram_size = Z2_RAM_SIZE,
};
#define Z2_GPIO_SD_DETECT 96
#define Z2_GPIO_AC_IN 0
#define Z2_GPIO_KEY_ON 1
#define Z2_GPIO_LCD_CS 88
typedef struct {
SSISlave ssidev;
int32_t selected;
int32_t enabled;
uint8_t buf[3];
uint32_t cur_reg;
int pos;
} ZipitLCD;
static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
{
ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
uint16_t val;
if (z->selected) {
z->buf[z->pos] = value & 0xff;
z->pos++;
}
if (z->pos == 3) {
switch (z->buf[0]) {
case 0x74:
DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
z->cur_reg = z->buf[2];
break;
case 0x76:
val = z->buf[1] << 8 | z->buf[2];
DPRINTF("%s: value: 0x%.4x\n", __func__, val);
if (z->cur_reg == 0x22 && val == 0x0000) {
z->enabled = 1;
printf("%s: LCD enabled\n", __func__);
} else if (z->cur_reg == 0x10 && val == 0x0000) {
z->enabled = 0;
printf("%s: LCD disabled\n", __func__);
}
break;
default:
DPRINTF("%s: unknown command!\n", __func__);
break;
}
z->pos = 0;
}
return 0;
}
static void z2_lcd_cs(void *opaque, int line, int level)
{
ZipitLCD *z2_lcd = opaque;
z2_lcd->selected = !level;
}
static int zipit_lcd_init(SSISlave *dev)
{
ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
z->selected = 0;
z->enabled = 0;
z->pos = 0;
return 0;
}
static VMStateDescription vmstate_zipit_lcd_state = {
.name = "zipit-lcd",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_INT32(selected, ZipitLCD),
VMSTATE_INT32(enabled, ZipitLCD),
VMSTATE_BUFFER(buf, ZipitLCD),
VMSTATE_UINT32(cur_reg, ZipitLCD),
VMSTATE_INT32(pos, ZipitLCD),
VMSTATE_END_OF_LIST(),
}
};
static void zipit_lcd_class_init(ObjectClass *klass, void *data)
{
SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
k->init = zipit_lcd_init;
k->transfer = zipit_lcd_transfer;
}
static DeviceInfo zipit_lcd_info = {
.name = "zipit-lcd",
.size = sizeof(ZipitLCD),
.vmsd = &vmstate_zipit_lcd_state,
.class_init = zipit_lcd_class_init,
};
typedef struct {
I2CSlave i2c;
int len;
uint8_t buf[3];
} AER915State;
static int aer915_send(I2CSlave *i2c, uint8_t data)
{
AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
s->buf[s->len] = data;
if (s->len++ > 2) {
DPRINTF("%s: message too long (%i bytes)\n",
__func__, s->len);
return 1;
}
if (s->len == 2) {
DPRINTF("%s: reg %d value 0x%02x\n", __func__,
s->buf[0], s->buf[1]);
}
return 0;
}
static void aer915_event(I2CSlave *i2c, enum i2c_event event)
{
AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
switch (event) {
case I2C_START_SEND:
s->len = 0;
break;
case I2C_START_RECV:
if (s->len != 1) {
DPRINTF("%s: short message!?\n", __func__);
}
break;
case I2C_FINISH:
break;
default:
break;
}
}
static int aer915_recv(I2CSlave *slave)
{
int retval = 0x00;
AER915State *s = FROM_I2C_SLAVE(AER915State, slave);
switch (s->buf[0]) {
/* Return hardcoded battery voltage,
* 0xf0 means ~4.1V
*/
case 0x02:
retval = 0xf0;
break;
/* Return 0x00 for other regs,
* we don't know what they are for,
* anyway they return 0x00 on real hardware.
*/
default:
break;
}
return retval;
}
static int aer915_init(I2CSlave *i2c)
{
/* Nothing to do. */
return 0;
}
static VMStateDescription vmstate_aer915_state = {
.name = "aer915",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_INT32(len, AER915State),
VMSTATE_BUFFER(buf, AER915State),
VMSTATE_END_OF_LIST(),
}
};
static void aer915_class_init(ObjectClass *klass, void *data)
{
I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
k->init = aer915_init;
k->event = aer915_event;
k->recv = aer915_recv;
k->send = aer915_send;
}
static DeviceInfo aer915_info = {
.name = "aer915",
.size = sizeof(AER915State),
.vmsd = &vmstate_aer915_state,
.class_init = aer915_class_init,
};
static void z2_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
MemoryRegion *address_space_mem = get_system_memory();
uint32_t sector_len = 0x10000;
PXA2xxState *cpu;
DriveInfo *dinfo;
int be;
void *z2_lcd;
i2c_bus *bus;
DeviceState *wm;
if (!cpu_model) {
cpu_model = "pxa270-c5";
}
/* Setup CPU & memory */
cpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model);
#ifdef TARGET_WORDS_BIGENDIAN
be = 1;
#else
be = 0;
#endif
dinfo = drive_get(IF_PFLASH, 0, 0);
if (!dinfo) {
fprintf(stderr, "Flash image must be given with the "
"'pflash' parameter\n");
exit(1);
}
if (!pflash_cfi01_register(Z2_FLASH_BASE,
NULL, "z2.flash0", Z2_FLASH_SIZE,
dinfo->bdrv, sector_len,
Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
be)) {
fprintf(stderr, "qemu: Error registering flash memory.\n");
exit(1);
}
/* setup keypad */
pxa27x_register_keypad(cpu->kp, map, 0x100);
/* MMC/SD host */
pxa2xx_mmci_handlers(cpu->mmc,
NULL,
qdev_get_gpio_in(cpu->gpio, Z2_GPIO_SD_DETECT));
ssi_register_slave(&zipit_lcd_info);
i2c_register_slave(&aer915_info);
z2_lcd = ssi_create_slave(cpu->ssp[1], "zipit-lcd");
bus = pxa2xx_i2c_bus(cpu->i2c[0]);
i2c_create_slave(bus, "aer915", 0x55);
wm = i2c_create_slave(bus, "wm8750", 0x1b);
cpu->i2s->opaque = wm;
cpu->i2s->codec_out = wm8750_dac_dat;
cpu->i2s->codec_in = wm8750_adc_dat;
wm8750_data_req_set(wm, cpu->i2s->data_req, cpu->i2s);
qdev_connect_gpio_out(cpu->gpio, Z2_GPIO_LCD_CS,
qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);
if (kernel_filename) {
z2_binfo.kernel_filename = kernel_filename;
z2_binfo.kernel_cmdline = kernel_cmdline;
z2_binfo.initrd_filename = initrd_filename;
z2_binfo.board_id = 0x6dd;
arm_load_kernel(cpu->env, &z2_binfo);
}
}
static QEMUMachine z2_machine = {
.name = "z2",
.desc = "Zipit Z2 (PXA27x)",
.init = z2_init,
};
static void z2_machine_init(void)
{
qemu_register_machine(&z2_machine);
}
machine_init(z2_machine_init);
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