diff options
Diffstat (limited to 'arch/arm/mach-omap2/prm44xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/prm44xx.c | 182 |
1 files changed, 55 insertions, 127 deletions
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c index a2a04bf..495a31a 100644 --- a/arch/arm/mach-omap2/prm44xx.c +++ b/arch/arm/mach-omap2/prm44xx.c @@ -1,7 +1,7 @@ /* * OMAP4 PRM module functions * - * Copyright (C) 2010 Texas Instruments, Inc. + * Copyright (C) 2011 Texas Instruments, Inc. * Copyright (C) 2010 Nokia Corporation * Benoît Cousson * Paul Walmsley @@ -21,14 +21,11 @@ #include <plat/cpu.h> #include <plat/prcm.h> +#include "vp.h" #include "prm44xx.h" #include "prm-regbits-44xx.h" - -/* - * Address offset (in bytes) between the reset control and the reset - * status registers: 4 bytes on OMAP4 - */ -#define OMAP4_RST_CTRL_ST_OFFSET 4 +#include "prcm44xx.h" +#include "prminst44xx.h" /* PRM low-level functions */ @@ -57,139 +54,70 @@ u32 omap4_prm_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg) return v; } -/* Read a PRM register, AND it, and shift the result down to bit 0 */ -/* XXX deprecated */ -u32 omap4_prm_read_bits_shift(void __iomem *reg, u32 mask) -{ - u32 v; - - v = __raw_readl(reg); - v &= mask; - v >>= __ffs(mask); - - return v; -} - -/* Read-modify-write a register in a PRM module. Caller must lock */ -/* XXX deprecated */ -u32 omap4_prm_rmw_reg_bits(u32 mask, u32 bits, void __iomem *reg) -{ - u32 v; - - v = __raw_readl(reg); - v &= ~mask; - v |= bits; - __raw_writel(v, reg); - - return v; -} - -u32 omap4_prm_set_inst_reg_bits(u32 bits, s16 inst, s16 reg) -{ - return omap4_prm_rmw_inst_reg_bits(bits, bits, inst, reg); -} - -u32 omap4_prm_clear_inst_reg_bits(u32 bits, s16 inst, s16 reg) -{ - return omap4_prm_rmw_inst_reg_bits(bits, 0x0, inst, reg); -} +/* PRM VP */ -/** - * omap4_prm_is_hardreset_asserted - read the HW reset line state of - * submodules contained in the hwmod module - * @rstctrl_reg: RM_RSTCTRL register address for this module - * @shift: register bit shift corresponding to the reset line to check - * - * Returns 1 if the (sub)module hardreset line is currently asserted, - * 0 if the (sub)module hardreset line is not currently asserted, or - * -EINVAL upon parameter error. +/* + * struct omap4_vp - OMAP4 VP register access description. + * @irqstatus_mpu: offset to IRQSTATUS_MPU register for VP + * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg */ -int omap4_prm_is_hardreset_asserted(void __iomem *rstctrl_reg, u8 shift) +struct omap4_vp { + u32 irqstatus_mpu; + u32 tranxdone_status; +}; + +static struct omap4_vp omap4_vp[] = { + [OMAP4_VP_VDD_MPU_ID] = { + .irqstatus_mpu = OMAP4_PRM_IRQSTATUS_MPU_2_OFFSET, + .tranxdone_status = OMAP4430_VP_MPU_TRANXDONE_ST_MASK, + }, + [OMAP4_VP_VDD_IVA_ID] = { + .irqstatus_mpu = OMAP4_PRM_IRQSTATUS_MPU_OFFSET, + .tranxdone_status = OMAP4430_VP_IVA_TRANXDONE_ST_MASK, + }, + [OMAP4_VP_VDD_CORE_ID] = { + .irqstatus_mpu = OMAP4_PRM_IRQSTATUS_MPU_OFFSET, + .tranxdone_status = OMAP4430_VP_CORE_TRANXDONE_ST_MASK, + }, +}; + +u32 omap4_prm_vp_check_txdone(u8 vp_id) { - if (!cpu_is_omap44xx() || !rstctrl_reg) - return -EINVAL; + struct omap4_vp *vp = &omap4_vp[vp_id]; + u32 irqstatus; - return omap4_prm_read_bits_shift(rstctrl_reg, (1 << shift)); + irqstatus = omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION, + OMAP4430_PRM_OCP_SOCKET_INST, + vp->irqstatus_mpu); + return irqstatus & vp->tranxdone_status; } -/** - * omap4_prm_assert_hardreset - assert the HW reset line of a submodule - * @rstctrl_reg: RM_RSTCTRL register address for this module - * @shift: register bit shift corresponding to the reset line to assert - * - * Some IPs like dsp, ipu or iva contain processors that require an HW - * reset line to be asserted / deasserted in order to fully enable the - * IP. These modules may have multiple hard-reset lines that reset - * different 'submodules' inside the IP block. This function will - * place the submodule into reset. Returns 0 upon success or -EINVAL - * upon an argument error. - */ -int omap4_prm_assert_hardreset(void __iomem *rstctrl_reg, u8 shift) +void omap4_prm_vp_clear_txdone(u8 vp_id) { - u32 mask; - - if (!cpu_is_omap44xx() || !rstctrl_reg) - return -EINVAL; + struct omap4_vp *vp = &omap4_vp[vp_id]; - mask = 1 << shift; - omap4_prm_rmw_reg_bits(mask, mask, rstctrl_reg); + omap4_prminst_write_inst_reg(vp->tranxdone_status, + OMAP4430_PRM_PARTITION, + OMAP4430_PRM_OCP_SOCKET_INST, + vp->irqstatus_mpu); +}; - return 0; +u32 omap4_prm_vcvp_read(u8 offset) +{ + return omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION, + OMAP4430_PRM_DEVICE_INST, offset); } -/** - * omap4_prm_deassert_hardreset - deassert a submodule hardreset line and wait - * @rstctrl_reg: RM_RSTCTRL register address for this module - * @shift: register bit shift corresponding to the reset line to deassert - * - * Some IPs like dsp, ipu or iva contain processors that require an HW - * reset line to be asserted / deasserted in order to fully enable the - * IP. These modules may have multiple hard-reset lines that reset - * different 'submodules' inside the IP block. This function will - * take the submodule out of reset and wait until the PRCM indicates - * that the reset has completed before returning. Returns 0 upon success or - * -EINVAL upon an argument error, -EEXIST if the submodule was already out - * of reset, or -EBUSY if the submodule did not exit reset promptly. - */ -int omap4_prm_deassert_hardreset(void __iomem *rstctrl_reg, u8 shift) +void omap4_prm_vcvp_write(u32 val, u8 offset) { - u32 mask; - void __iomem *rstst_reg; - int c; - - if (!cpu_is_omap44xx() || !rstctrl_reg) - return -EINVAL; - - rstst_reg = rstctrl_reg + OMAP4_RST_CTRL_ST_OFFSET; - - mask = 1 << shift; - - /* Check the current status to avoid de-asserting the line twice */ - if (omap4_prm_read_bits_shift(rstctrl_reg, mask) == 0) - return -EEXIST; - - /* Clear the reset status by writing 1 to the status bit */ - omap4_prm_rmw_reg_bits(0xffffffff, mask, rstst_reg); - /* de-assert the reset control line */ - omap4_prm_rmw_reg_bits(mask, 0, rstctrl_reg); - /* wait the status to be set */ - omap_test_timeout(omap4_prm_read_bits_shift(rstst_reg, mask), - MAX_MODULE_HARDRESET_WAIT, c); - - return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0; + omap4_prminst_write_inst_reg(val, OMAP4430_PRM_PARTITION, + OMAP4430_PRM_DEVICE_INST, offset); } -void omap4_prm_global_warm_sw_reset(void) +u32 omap4_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset) { - u32 v; - - v = omap4_prm_read_inst_reg(OMAP4430_PRM_DEVICE_INST, - OMAP4_RM_RSTCTRL); - v |= OMAP4430_RST_GLOBAL_WARM_SW_MASK; - omap4_prm_write_inst_reg(v, OMAP4430_PRM_DEVICE_INST, - OMAP4_RM_RSTCTRL); - - /* OCP barrier */ - v = omap4_prm_read_inst_reg(OMAP4430_PRM_DEVICE_INST, - OMAP4_RM_RSTCTRL); + return omap4_prminst_rmw_inst_reg_bits(mask, bits, + OMAP4430_PRM_PARTITION, + OMAP4430_PRM_DEVICE_INST, + offset); } |