diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch b/target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch new file mode 100644 index 0000000000..78724ee695 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.0/0006-bcma-add-serial-console-support.patch @@ -0,0 +1,151 @@ +From b7c100827012ba588089807475affe0c69a3f817 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Mon, 6 Jun 2011 00:07:33 +0200 +Subject: [PATCH 06/14] bcma: add serial console support + +This adds support for serial console to bcma, when operating on an +embedded device. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/bcma/bcma_private.h | 6 +++ + drivers/bcma/driver_chipcommon.c | 64 +++++++++++++++++++++++++++++++++ + drivers/bcma/driver_mips.c | 9 +++++ + include/linux/bcma/bcma_driver_mips.h | 11 ++++++ + 4 files changed, 90 insertions(+), 0 deletions(-) + +--- a/drivers/bcma/bcma_private.h ++++ b/drivers/bcma/bcma_private.h +@@ -29,6 +29,12 @@ void bcma_init_bus(struct bcma_bus *bus) + /* sprom.c */ + int bcma_sprom_get(struct bcma_bus *bus); + ++/* driver_chipcommon.c */ ++#ifdef CONFIG_BCMA_DRIVER_MIPS ++extern int bcma_chipco_serial_init(struct bcma_drv_cc *cc, ++ struct bcma_drv_mips_serial_port *ports); ++#endif /* CONFIG_BCMA_DRIVER_MIPS */ ++ + #ifdef CONFIG_BCMA_HOST_PCI + /* host_pci.c */ + extern int __init bcma_host_pci_init(void); +--- a/drivers/bcma/driver_chipcommon.c ++++ b/drivers/bcma/driver_chipcommon.c +@@ -92,3 +92,67 @@ u32 bcma_chipco_gpio_polarity(struct bcm + { + return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value); + } ++ ++#ifdef CONFIG_BCMA_DRIVER_MIPS ++int bcma_chipco_serial_init(struct bcma_drv_cc *cc, ++ struct bcma_drv_mips_serial_port *ports) ++{ ++ int nr_ports = 0; ++ u32 plltype; ++ unsigned int irq; ++ u32 baud_base, div; ++ u32 i, n; ++ unsigned int ccrev = cc->core->id.rev; ++ ++ plltype = (cc->capabilities & BCMA_CC_CAP_PLLT); ++ irq = bcma_core_mips_irq(cc->core); ++ ++ if ((ccrev >= 11) && (ccrev != 15) && (ccrev != 20)) { ++ /* Fixed ALP clock */ ++ baud_base = 20000000; ++ if (cc->capabilities & BCMA_CC_CAP_PMU) { ++ /* FIXME: baud_base is different for devices with a PMU */ ++ WARN_ON(1); ++ } ++ div = 1; ++ if (ccrev >= 21) { ++ /* Turn off UART clock before switching clocksource. */ ++ bcma_cc_write32(cc, BCMA_CC_CORECTL, ++ bcma_cc_read32(cc, BCMA_CC_CORECTL) ++ & ~BCMA_CC_CORECTL_UARTCLKEN); ++ } ++ /* Set the override bit so we don't divide it */ ++ bcma_cc_write32(cc, BCMA_CC_CORECTL, ++ bcma_cc_read32(cc, BCMA_CC_CORECTL) ++ | BCMA_CC_CORECTL_UARTCLK0); ++ if (ccrev >= 21) { ++ /* Re-enable the UART clock. */ ++ bcma_cc_write32(cc, BCMA_CC_CORECTL, ++ bcma_cc_read32(cc, BCMA_CC_CORECTL) ++ | BCMA_CC_CORECTL_UARTCLKEN); ++ } ++ } else ++ pr_err("serial not supported on this device ccrev: 0x%x\n", ++ ccrev); ++ ++ /* Determine the registers of the UARTs */ ++ n = (cc->capabilities & BCMA_CC_CAP_NRUART); ++ for (i = 0; i < n; i++) { ++ void __iomem *cc_mmio; ++ void __iomem *uart_regs; ++ ++ cc_mmio = cc->core->bus->mmio + ++ (cc->core->core_index * BCMA_CORE_SIZE); ++ uart_regs = cc_mmio + BCMA_CC_UART0_DATA; ++ uart_regs += (i * 256); ++ ++ nr_ports++; ++ ports[i].regs = uart_regs; ++ ports[i].irq = irq; ++ ports[i].baud_base = baud_base; ++ ports[i].reg_shift = 0; ++ } ++ ++ return nr_ports; ++} ++#endif /* CONFIG_BCMA_DRIVER_MIPS */ +--- a/drivers/bcma/driver_mips.c ++++ b/drivers/bcma/driver_mips.c +@@ -157,6 +157,14 @@ static void bcma_core_mips_dump_irq(stru + } + } + ++static void bcma_core_mips_serial_init(struct bcma_drv_mips *mcore) ++{ ++ struct bcma_bus *bus = mcore->core->bus; ++ ++ mcore->nr_serial_ports = bcma_chipco_serial_init(&bus->drv_cc, ++ mcore->serial_ports); ++} ++ + static void bcma_core_mips_flash_detect(struct bcma_drv_mips *mcore) + { + struct bcma_bus *bus = mcore->core->bus; +@@ -229,6 +237,7 @@ void bcma_core_mips_init(struct bcma_drv + if (mcore->setup_done) + return; + ++ bcma_core_mips_serial_init(mcore); + bcma_core_mips_flash_detect(mcore); + mcore->setup_done = true; + } +--- a/include/linux/bcma/bcma_driver_mips.h ++++ b/include/linux/bcma/bcma_driver_mips.h +@@ -32,11 +32,22 @@ + + struct bcma_device; + ++struct bcma_drv_mips_serial_port { ++ void *regs; ++ unsigned long clockspeed; ++ unsigned int irq; ++ unsigned int baud_base; ++ unsigned int reg_shift; ++}; ++ + struct bcma_drv_mips { + struct bcma_device *core; + u8 setup_done:1; + unsigned int assigned_irqs; + ++ int nr_serial_ports; ++ struct bcma_drv_mips_serial_port serial_ports[4]; ++ + u8 flash_buswidth; + u32 flash_window; + u32 flash_window_size; |