static void assabet_irda_set_speed(struct device *dev, unsigned int speed)
{
if (speed < 4000000)
ASSABET_BCR_clear(ASSABET_BCR_IRDA_FSEL);
else
ASSABET_BCR_set(ASSABET_BCR_IRDA_FSEL);
}
static void assabet_lcd_backlight_power(int on)
{
if (on)
ASSABET_BCR_set(ASSABET_BCR_LIGHT_ON);
else
ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON);
}
static int __init bus_init(void)
{
struct bit_data *bit = &bit_data;
unsigned long flags;
int ret;
if (machine_is_assabet() || machine_is_pangolin()) {
bit->sda = GPIO_GPIO15;
bit->scl = GPIO_GPIO18;
bit->l3_mode = GPIO_GPIO17;
}
if (machine_is_h3600() || machine_is_h3100()) {
bit->sda = GPIO_GPIO14;
bit->scl = GPIO_GPIO16;
bit->l3_mode = GPIO_GPIO15;
}
if (machine_is_stork()) {
bit->sda = GPIO_GPIO15;
bit->scl = GPIO_GPIO18;
bit->l3_mode = GPIO_GPIO17;
}
if (!bit->sda)
return -ENODEV;
/*
* Default level for L3 mode is low.
* We set SCL and SDA high (i2c idle state).
*/
local_irq_save(flags);
GPDR &= ~(bit->scl | bit->sda);
GPCR = bit->l3_mode | bit->scl | bit->sda;
GPDR |= bit->l3_mode;
local_irq_restore(flags);
if (machine_is_assabet()) {
/*
* Release reset on UCB1300, ADI7171 and UDA1341. We
* need to do this here so that we can communicate on
* the I2C/L3 buses.
*/
ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
mdelay(1);
ASSABET_BCR_clear(ASSABET_BCR_CODEC_RST);
mdelay(1);
ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
}
ret = i2c_init(bit);
if (ret == 0 && bit->l3_mode) {
ret = l3_init(bit);
if (ret)
i2c_exit();
}
return ret;
}
/*
* Turn on/off the backlight. When turning the backlight on, we wait
* 500us after turning it on so we don't cause the supplies to droop
* when we enable the LCD controller (and cause a hard reset.)
*/
static void assabet_lcd_power(int on)
{
if (on) {
ASSABET_BCR_set(ASSABET_BCR_LCD_ON);
udelay(500);
} else
ASSABET_BCR_clear(ASSABET_BCR_LCD_ON);
}
static void assabet_lcd_power(int on)
{
#ifndef ASSABET_PAL_VIDEO
if (on)
ASSABET_BCR_set(ASSABET_BCR_LCD_ON);
else
#endif
ASSABET_BCR_clear(ASSABET_BCR_LCD_ON);
}
/*
* Enable card status IRQs on (re-)initialisation. This can
* be called at initialisation, power management event, or
* pcmcia event.
*/
static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
{
/*
* Enable CF bus
*/
ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);
soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
}
static void assabet_backlight_power(int on)
{
#ifndef ASSABET_PAL_VIDEO
if (on)
ASSABET_BCR_set(ASSABET_BCR_LIGHT_ON);
else
#endif
ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON);
}
static void assabet_lcd_set_visual(u32 visual)
{
u_int is_true_color = visual == FB_VISUAL_TRUECOLOR;
if (machine_is_assabet()) {
#if 1 // phase 4 or newer Assabet's
if (is_true_color)
ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB);
else
ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB);
#else
// older Assabet's
if (is_true_color)
ASSABET_BCR_clear(ASSABET_BCR_LCD_12RGB);
else
ASSABET_BCR_set(ASSABET_BCR_LCD_12RGB);
#endif
}
}
static void assabet_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
if (port->mapbase == _Ser1UTCR0) {
if (state)
ASSABET_BCR_clear(ASSABET_BCR_RS232EN |
ASSABET_BCR_COM_RTS |
ASSABET_BCR_COM_DTR);
else
ASSABET_BCR_set(ASSABET_BCR_RS232EN |
ASSABET_BCR_COM_RTS |
ASSABET_BCR_COM_DTR);
}
}
static int assabet_irda_set_power(struct device *dev, unsigned int state)
{
static unsigned int bcr_state[4] = {
ASSABET_BCR_IRDA_MD0,
ASSABET_BCR_IRDA_MD1|ASSABET_BCR_IRDA_MD0,
ASSABET_BCR_IRDA_MD1,
0
};
if (state < 4) {
state = bcr_state[state];
ASSABET_BCR_clear(state ^ (ASSABET_BCR_IRDA_MD1|
ASSABET_BCR_IRDA_MD0));
ASSABET_BCR_set(state);
}
return 0;
}
/*
* This sets the IRDA power level on the Assabet.
*/
static inline int
sa1100_irda_set_power_assabet(struct sa1100_irda *si, unsigned int state)
{
static unsigned int bcr_state[4] = {
ASSABET_BCR_IRDA_MD0,
ASSABET_BCR_IRDA_MD1|ASSABET_BCR_IRDA_MD0,
ASSABET_BCR_IRDA_MD1,
0
};
if (state < 4) {
state = bcr_state[state];
ASSABET_BCR_clear(state ^ (ASSABET_BCR_IRDA_MD1|
ASSABET_BCR_IRDA_MD0));
ASSABET_BCR_set(state);
}
return 0;
}
/*
* Shutdown the Assabet audio driver.
*
* We have to be careful about the SFRM line here for the same reasons
* described in the initialisation comments above. This basically means
* that we must hand the SSP pins back to the GPIO module before disabling
* the SSP.
*
* In addition, to reduce power drain, we toggle the SFRM line once so
* that the UDA_WS line is at logic 0.
*
* We can't clear ASSABET_BCR_CODEC_RST without knowing if the UCB1300 or
* ADV7171 driver is still active. If it is, then we still need to play
* games, so we might as well leave ASSABET_BCR_CODEC_RST set.
*/
static void assabet_audio_shutdown(void *dummy)
{
ASSABET_BCR_set(ASSABET_BCR_STEREO_LB | ASSABET_BCR_QMUTE |
ASSABET_BCR_SPK_OFF);
l3_close(&uda1341);
GAFR &= ~(GPIO_SSP_TXD | GPIO_SSP_RXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM);
Ser4SSCR0 = 0;
#ifdef FIX_POWER_DRAIN
GPSR = GPIO_SSP_SFRM;
GPCR = GPIO_SSP_SFRM;
#endif
/* disable the audio power */
ASSABET_BCR_clear(ASSABET_BCR_AUDIO_ON);
}
/*
* Assabet uses COM_RTS and COM_DTR for both UART1 (com port)
* and UART3 (radio module). We only handle them for UART1 here.
*/
static void assabet_set_mctrl(struct uart_port *port, u_int mctrl)
{
if (port->mapbase == _Ser1UTCR0) {
u_int set = 0, clear = 0;
if (mctrl & TIOCM_RTS)
clear |= ASSABET_BCR_COM_RTS;
else
set |= ASSABET_BCR_COM_RTS;
if (mctrl & TIOCM_DTR)
clear |= ASSABET_BCR_COM_DTR;
else
set |= ASSABET_BCR_COM_DTR;
ASSABET_BCR_clear(clear);
ASSABET_BCR_set(set);
}
}
static void assabet_codec_reset(unsigned mask, int set)
{
unsigned long flags;
bool old;
local_irq_save(flags);
old = !codec_nreset;
if (set)
codec_nreset &= ~mask;
else
codec_nreset |= mask;
if (old != !codec_nreset) {
if (codec_nreset) {
ASSABET_BCR_set(ASSABET_BCR_NCODEC_RST);
adv7171_sleep();
} else {
ASSABET_BCR_clear(ASSABET_BCR_NCODEC_RST);
}
}
local_irq_restore(flags);
}
static void assabet_pal_backlight_power(int on)
{
ASSABET_BCR_clear(ASSABET_BCR_LIGHT_ON);
}
static void assabet_pal_power(int on)
{
ASSABET_BCR_clear(ASSABET_BCR_LCD_ON);
}
/*
* Set the IrDA communications speed.
*/
static int sa1100_irda_set_speed(struct sa1100_irda *si, int speed)
{
unsigned long flags;
int brd, ret = -EINVAL;
switch (speed) {
case 9600: case 19200: case 38400:
case 57600: case 115200:
brd = 3686400 / (16 * speed) - 1;
/*
* Stop the receive DMA.
*/
if (IS_FIR(si))
sa1100_stop_dma(si->rxdma);
local_irq_save(flags);
Ser2UTCR3 = 0;
Ser2HSCR0 = HSCR0_UART;
Ser2UTCR1 = brd >> 8;
Ser2UTCR2 = brd;
/*
* Clear status register
*/
Ser2UTSR0 = UTSR0_REB | UTSR0_RBB | UTSR0_RID;
Ser2UTCR3 = UTCR3_RIE | UTCR3_RXE | UTCR3_TXE;
if (machine_is_assabet())
ASSABET_BCR_clear(ASSABET_BCR_IRDA_FSEL);
if (machine_is_h3xxx())
clr_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
if (machine_is_yopy())
PPSR &= ~GPIO_IRDA_FIR;
si->speed = speed;
local_irq_restore(flags);
ret = 0;
break;
case 4000000:
local_irq_save(flags);
si->hscr0 = 0;
Ser2HSSR0 = 0xff;
Ser2HSCR0 = si->hscr0 | HSCR0_HSSP;
Ser2UTCR3 = 0;
si->speed = speed;
if (machine_is_assabet())
ASSABET_BCR_set(ASSABET_BCR_IRDA_FSEL);
if (machine_is_h3xxx())
set_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
if (machine_is_yopy())
PPSR |= GPIO_IRDA_FIR;
sa1100_irda_rx_alloc(si);
sa1100_irda_rx_dma_start(si);
local_irq_restore(flags);
break;
default:
break;
}
return ret;
}
/*
* Initialise the Assabet audio driver.
*
* Note that we have to be careful with the order that we do things here;
* there is a D-type flip flop which is clocked from the SFRM line which
* indicates whether the same is for the left or right channel to the
* UDA1341.
*
* When you disable the SSP (by clearing SSCR0_SSE) it appears that the
* SFRM signal can float high. When you re-enable the SSP, you clock the
* flip flop once, and end up swapping the left and right channels.
*
* The ASSABET_BCR_CODEC_RST line will force this flip flop into a known
* state, but this line resets other devices as well!
*
* In addition to the above, it appears that powering down the UDA1341 on
* early Assabets leaves the UDA_WS actively driving a logic '1' into the
* chip, wasting power! (you can tell this by D11 being half-on). We
* attempt to correct this by kicking the flip flop on init/open/close.
* We should probably do this on PM resume as well.
*
* (Note the ordering of ASSABET_BCR_AUDIO_ON, SFRM and ASSABET_BCR_CODEC_RST
* is important).
*/
static void assabet_audio_init(void *dummy)
{
unsigned long flags;
unsigned int mdrefr;
local_irq_save(flags);
/*
* Enable the power for the UDA1341 before driving any signals.
* We leave the audio amp (LM4880) disabled for now.
*/
ASSABET_BCR_set(ASSABET_BCR_AUDIO_ON);
#ifdef FIX_POWER_DRAIN
GPSR = GPIO_SSP_SFRM;
GPCR = GPIO_SSP_SFRM;
#endif
ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
ASSABET_BCR_clear(ASSABET_BCR_STEREO_LB);
/*
* Setup the SSP uart.
*/
PPAR |= PPAR_SPR;
Ser4SSCR0 = SSCR0_DataSize(16) + SSCR0_TI + SSCR0_SerClkDiv(2);
Ser4SSCR1 = SSCR1_SClkIactL + SSCR1_SClk1P + SSCR1_ExtClk;
GAFR |= GPIO_SSP_TXD | GPIO_SSP_RXD | GPIO_SSP_SCLK | GPIO_SSP_CLK;
GPDR |= GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM;
GPDR &= ~(GPIO_SSP_RXD | GPIO_SSP_CLK);
Ser4SSCR0 |= SSCR0_SSE;
/*
* Only give SFRM to the SSP after it has been enabled.
*/
GAFR |= GPIO_SSP_SFRM;
/*
* The assabet board uses the SDRAM clock as the source clock for
* audio. This is supplied to the SA11x0 from the CPLD on pin 19.
* At 206MHz we need to run the audio clock (SDRAM bank 2)
* at half speed. This clock will scale with core frequency so
* the audio sample rate will also scale. The CPLD on Assabet
* will need to be programmed to match the core frequency.
*/
mdrefr = MDREFR;
if ((mdrefr & (MDREFR_K2DB2 | MDREFR_K2RUN | MDREFR_EAPD |
MDREFR_KAPD)) != (MDREFR_K2DB2 | MDREFR_K2RUN)) {
mdrefr |= MDREFR_K2DB2 | MDREFR_K2RUN;
mdrefr &= ~(MDREFR_EAPD | MDREFR_KAPD);
MDREFR = mdrefr;
(void) MDREFR;
}
local_irq_restore(flags);
/* Wait for the UDA1341 to wake up */
mdelay(1);
l3_open(&uda1341);
assabet_set_samplerate(audio_samplerate);
/* Enable the audio power */
ASSABET_BCR_clear(ASSABET_BCR_QMUTE | ASSABET_BCR_SPK_OFF);
}
