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Fix the resource information for the i2s-a node on certain G5 PowerMacs.

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This is the first step needed to get the snapper codec working on those
machines.
The second step is to enable the corresponding I2S device and its clock.

Tested on machines where the snapper codec was already working, a G4 PowerBook
and a PowerMac9,1 with a Shasta based macio.
The PowerMac7,2/7,3 with a K2 based macio can now also play sound.

MFC after:	1 month
This commit is contained in:
Andreas Tobler 2014-01-20 21:54:05 +00:00
parent a071fdd1de
commit d25b22e12b
2 changed files with 56 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
sys/powerpc/powermac/macio.c
View File

@ -236,13 +236,45 @@ macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
static void
macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
{
struct macio_reg *reg;
int i, nreg;
struct macio_reg *reg, *regp;
phandle_t child;
char buf[8];
int i, layout_id = 0, nreg, res;
nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)&reg);
if (nreg == -1)
return;
/*
* Some G5's have broken properties in the i2s-a area. If so we try
* to fix it. Right now we know of two different cases, one for
* sound layout-id 36 and the other one for sound layout-id 76.
* What is missing is the base address for the memory addresses.
* We take them from the parent node (i2s) and use the size
* information from the child.
*/
if (reg[0].mr_base == 0) {
child = OF_child(devnode);
while (child != 0) {
res = OF_getprop(child, "name", buf, sizeof(buf));
if (res > 0 && strcmp(buf, "sound") == 0)
break;
child = OF_peer(child);
}
res = OF_getprop(child, "layout-id", &layout_id,
sizeof(layout_id));
if (res > 0 && (layout_id == 36 || layout_id == 76)) {
res = OF_getprop_alloc(OF_parent(devnode), "reg",
sizeof(*regp), (void **)&regp);
reg[0] = regp[0];
reg[1].mr_base = regp[1].mr_base;
reg[2].mr_base = regp[1].mr_base + reg[1].mr_size;
}
}
for (i = 0; i < nreg; i++) {
resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i,
reg[i].mr_base, reg[i].mr_base + reg[i].mr_size,
@ -284,6 +316,7 @@ macio_attach(device_t dev)
phandle_t subchild;
device_t cdev;
u_int reg[3];
char compat[32];
int error, quirks;
sc = device_get_softc(dev);
@ -297,6 +330,9 @@ macio_attach(device_t dev)
return (ENXIO);
}
/* Used later to see if we have to enable the I2S part. */
OF_getprop(root, "compatible", compat, sizeof(compat));
sc->sc_base = reg[2];
sc->sc_size = MACIO_REG_SIZE;
@ -378,6 +414,21 @@ macio_attach(device_t dev)
bus_write_4(sc->sc_memr, HEATHROW_FCR, fcr);
}
/*
* Make sure the I2S0 and the I2S0_CLK are enabled.
* On certain G5's they are not.
*/
if ((strcmp(ofw_bus_get_name(cdev), "i2s") == 0) &&
(strcmp(compat, "K2-Keylargo") == 0)) {
uint32_t fcr1;
fcr1 = bus_read_4(sc->sc_memr, KEYLARGO_FCR1);
fcr1 |= FCR1_I2S0_CLK_ENABLE | FCR1_I2S0_ENABLE;
bus_write_4(sc->sc_memr, KEYLARGO_FCR1, fcr1);
}
}
return (bus_generic_attach(dev));

3
sys/powerpc/powermac/maciovar.h
View File

@ -48,6 +48,9 @@
#define FCR_ENET_ENABLE 0x60000000
#define FCR_ENET_RESET 0x80000000
#define FCR1_I2S0_CLK_ENABLE 0x00001000
#define FCR1_I2S0_ENABLE 0x00002000
/* Used only by macio_enable_wireless() for now. */
#define KEYLARGO_GPIO_BASE 0x6a
#define KEYLARGO_EXTINT_GPIO_REG_BASE 0x58