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MIPS: Netlogic: XLP2xx update for I2C controller

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XLP2xx has a new I2C controller which has 4 buses connected to
it. Update the IO offset and IRQ mapping code to reflect this.

Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com>
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5707/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ganesan Ramalingam 2013-08-11 14:43:58 +05:30 committed by Ralf Baechle
parent c49e42aba8
commit e5be1fd007
3 changed files with 21 additions and 7 deletions
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3
arch/mips/include/asm/netlogic/xlp-hal/iomap.h
View File

@ -88,6 +88,9 @@
#define XLP_IO_I2C0_OFFSET(node) XLP_HDR_OFFSET(node, 0, 6, 2)
#define XLP_IO_I2C1_OFFSET(node) XLP_HDR_OFFSET(node, 0, 6, 3)
#define XLP_IO_GPIO_OFFSET(node) XLP_HDR_OFFSET(node, 0, 6, 4)
/* on 2XX, all I2C busses are on the same block */
#define XLP2XX_IO_I2C_OFFSET(node) XLP_HDR_OFFSET(node, 0, 6, 7)
/* system management */
#define XLP_IO_SYS_OFFSET(node) XLP_HDR_OFFSET(node, 0, 6, 5)
#define XLP_IO_JTAG_OFFSET(node) XLP_HDR_OFFSET(node, 0, 6, 6)

2
arch/mips/include/asm/netlogic/xlp-hal/xlp.h
View File

@ -50,6 +50,8 @@
#define PIC_MMC_IRQ 29
#define PIC_I2C_0_IRQ 30
#define PIC_I2C_1_IRQ 31
#define PIC_I2C_2_IRQ 32
#define PIC_I2C_3_IRQ 33
#ifndef __ASSEMBLY__

23
arch/mips/netlogic/xlp/nlm_hal.c
View File

@ -93,11 +93,14 @@ int nlm_irq_to_irt(int irq)
case PIC_MMC_IRQ:
devoff = XLP_IO_SD_OFFSET(0);
break;
case PIC_I2C_0_IRQ:
devoff = XLP_IO_I2C0_OFFSET(0);
break;
case PIC_I2C_0_IRQ: /* I2C will be fixed up */
case PIC_I2C_1_IRQ:
devoff = XLP_IO_I2C1_OFFSET(0);
case PIC_I2C_2_IRQ:
case PIC_I2C_3_IRQ:
if (cpu_is_xlpii())
devoff = XLP2XX_IO_I2C_OFFSET(0);
else
devoff = XLP_IO_I2C0_OFFSET(0);
break;
default:
devoff = 0;
@ -107,9 +110,15 @@ int nlm_irq_to_irt(int irq)
if (devoff != 0) {
pcibase = nlm_pcicfg_base(devoff);
irt = nlm_read_reg(pcibase, XLP_PCI_IRTINFO_REG) & 0xffff;
/* HW bug, I2C 1 irt entry is off by one */
if (irq == PIC_I2C_1_IRQ)
irt = irt + 1;
/* HW weirdness, I2C IRT entry has to be fixed up */
switch (irq) {
case PIC_I2C_1_IRQ:
irt = irt + 1; break;
case PIC_I2C_2_IRQ:
irt = irt + 2; break;
case PIC_I2C_3_IRQ:
irt = irt + 3; break;
}
} else if (irq >= PIC_PCIE_LINK_0_IRQ && irq <= PIC_PCIE_LINK_3_IRQ) {
/* HW bug, PCI IRT entries are bad on early silicon, fix */
irt = PIC_IRT_PCIE_LINK_INDEX(irq - PIC_PCIE_LINK_0_IRQ);