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[PATCH] ARM: 2804/1: OMAP update 9/11: Update OMAP arch files

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Patch from Tony Lindgren

This patch by various OMAP developers syncs the OMAP
specific arch files with the linux-omap tree.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Tony Lindgren
2005-07-10 19:58:18 +01:00
committed by Russell King
parent d48af15ea7
commit bb13b5fdba
10 changed files with 480 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files

97
arch/arm/plat-omap/mcbsp.c
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@@ -66,6 +66,7 @@ struct omap_mcbsp {
static struct omap_mcbsp mcbsp[OMAP_MAX_MCBSP_COUNT];
static struct clk *mcbsp_dsp_ck = 0;
static struct clk *mcbsp_api_ck = 0;
static struct clk *mcbsp_dspxor_ck = 0;
static void omap_mcbsp_dump_reg(u8 id)
@@ -175,7 +176,7 @@ static int omap_mcbsp_check(unsigned int id)
return 0;
}
if (cpu_is_omap1510() || cpu_is_omap1610() || cpu_is_omap1710()) {
if (cpu_is_omap1510() || cpu_is_omap16xx()) {
if (id > OMAP_MAX_MCBSP_COUNT) {
printk(KERN_ERR "OMAP-McBSP: McBSP%d doesn't exist\n", id + 1);
return -1;
@@ -191,15 +192,12 @@ static int omap_mcbsp_check(unsigned int id)
static void omap_mcbsp_dsp_request(void)
{
if (cpu_is_omap1510() || cpu_is_omap1610() || cpu_is_omap1710()) {
omap_writew((omap_readw(ARM_RSTCT1) | (1 << 1) | (1 << 2)),
ARM_RSTCT1);
clk_enable(mcbsp_dsp_ck);
clk_enable(mcbsp_api_ck);
if (cpu_is_omap1510() || cpu_is_omap16xx()) {
clk_use(mcbsp_dsp_ck);
clk_use(mcbsp_api_ck);
/* enable 12MHz clock to mcbsp 1 & 3 */
__raw_writew(__raw_readw(DSP_IDLECT2) | (1 << EN_XORPCK),
DSP_IDLECT2);
clk_use(mcbsp_dspxor_ck);
__raw_writew(__raw_readw(DSP_RSTCT2) | 1 | 1 << 1,
DSP_RSTCT2);
}
@@ -207,10 +205,13 @@ static void omap_mcbsp_dsp_request(void)
static void omap_mcbsp_dsp_free(void)
{
/* Useless for now */
if (cpu_is_omap1510() || cpu_is_omap16xx()) {
clk_unuse(mcbsp_dspxor_ck);
clk_unuse(mcbsp_dsp_ck);
clk_unuse(mcbsp_api_ck);
}
}
int omap_mcbsp_request(unsigned int id)
{
int err;
@@ -350,6 +351,73 @@ void omap_mcbsp_stop(unsigned int id)
}
/* polled mcbsp i/o operations */
int omap_mcbsp_pollwrite(unsigned int id, u16 buf)
{
u32 base = mcbsp[id].io_base;
writew(buf, base + OMAP_MCBSP_REG_DXR1);
/* if frame sync error - clear the error */
if (readw(base + OMAP_MCBSP_REG_SPCR2) & XSYNC_ERR) {
/* clear error */
writew(readw(base + OMAP_MCBSP_REG_SPCR2) & (~XSYNC_ERR),
base + OMAP_MCBSP_REG_SPCR2);
/* resend */
return -1;
} else {
/* wait for transmit confirmation */
int attemps = 0;
while (!(readw(base + OMAP_MCBSP_REG_SPCR2) & XRDY)) {
if (attemps++ > 1000) {
writew(readw(base + OMAP_MCBSP_REG_SPCR2) &
(~XRST),
base + OMAP_MCBSP_REG_SPCR2);
udelay(10);
writew(readw(base + OMAP_MCBSP_REG_SPCR2) |
(XRST),
base + OMAP_MCBSP_REG_SPCR2);
udelay(10);
printk(KERN_ERR
" Could not write to McBSP Register\n");
return -2;
}
}
}
return 0;
}
int omap_mcbsp_pollread(unsigned int id, u16 * buf)
{
u32 base = mcbsp[id].io_base;
/* if frame sync error - clear the error */
if (readw(base + OMAP_MCBSP_REG_SPCR1) & RSYNC_ERR) {
/* clear error */
writew(readw(base + OMAP_MCBSP_REG_SPCR1) & (~RSYNC_ERR),
base + OMAP_MCBSP_REG_SPCR1);
/* resend */
return -1;
} else {
/* wait for recieve confirmation */
int attemps = 0;
while (!(readw(base + OMAP_MCBSP_REG_SPCR1) & RRDY)) {
if (attemps++ > 1000) {
writew(readw(base + OMAP_MCBSP_REG_SPCR1) &
(~RRST),
base + OMAP_MCBSP_REG_SPCR1);
udelay(10);
writew(readw(base + OMAP_MCBSP_REG_SPCR1) |
(RRST),
base + OMAP_MCBSP_REG_SPCR1);
udelay(10);
printk(KERN_ERR
" Could not read from McBSP Register\n");
return -2;
}
}
}
*buf = readw(base + OMAP_MCBSP_REG_DRR1);
return 0;
}
/*
* IRQ based word transmission.
*/
@@ -625,10 +693,15 @@ static int __init omap_mcbsp_init(void)
return PTR_ERR(mcbsp_dsp_ck);
}
mcbsp_api_ck = clk_get(0, "api_ck");
if (IS_ERR(mcbsp_dsp_ck)) {
if (IS_ERR(mcbsp_api_ck)) {
printk(KERN_ERR "mcbsp: could not acquire api_ck handle.\n");
return PTR_ERR(mcbsp_api_ck);
}
mcbsp_dspxor_ck = clk_get(0, "dspxor_ck");
if (IS_ERR(mcbsp_dspxor_ck)) {
printk(KERN_ERR "mcbsp: could not acquire dspxor_ck handle.\n");
return PTR_ERR(mcbsp_dspxor_ck);
}
#ifdef CONFIG_ARCH_OMAP730
if (cpu_is_omap730()) {
@@ -643,7 +716,7 @@ static int __init omap_mcbsp_init(void)
}
#endif
#if defined(CONFIG_ARCH_OMAP16XX)
if (cpu_is_omap1610() || cpu_is_omap1710()) {
if (cpu_is_omap16xx()) {
mcbsp_info = mcbsp_1610;
mcbsp_count = ARRAY_SIZE(mcbsp_1610);
}