diff options
Diffstat (limited to 'drivers/mfd/sta2x11-mfd.c')
| -rw-r--r-- | drivers/mfd/sta2x11-mfd.c | 234 |
1 files changed, 129 insertions, 105 deletions
diff --git a/drivers/mfd/sta2x11-mfd.c b/drivers/mfd/sta2x11-mfd.c index 9e01b84aa8bc..0cac2013bbf6 100644 --- a/drivers/mfd/sta2x11-mfd.c +++ b/drivers/mfd/sta2x11-mfd.c @@ -27,17 +27,25 @@ #include <linux/io.h> #include <linux/ioport.h> #include <linux/pci.h> -#include <linux/debugfs.h> #include <linux/seq_file.h> #include <linux/platform_device.h> #include <linux/mfd/core.h> #include <linux/mfd/sta2x11-mfd.h> +#include <linux/regmap.h> #include <asm/sta2x11.h> +static inline int __reg_within_range(unsigned int r, + unsigned int start, + unsigned int end) +{ + return ((r >= start) && (r <= end)); +} + /* This describes STA2X11 MFD chip for us, we may have several */ struct sta2x11_mfd { struct sta2x11_instance *instance; + struct regmap *regmap[sta2x11_n_mfd_plat_devs]; spinlock_t lock; struct list_head list; void __iomem *regs[sta2x11_n_mfd_plat_devs]; @@ -127,118 +135,126 @@ u32 __sta2x11_mfd_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val, } EXPORT_SYMBOL(__sta2x11_mfd_mask); -/* Two debugfs files, for our registers (FIXME: one instance only) */ -#define REG(regname) {.name = #regname, .offset = SCTL_ ## regname} -static struct debugfs_reg32 sta2x11_sctl_regs[] = { - REG(SCCTL), REG(ARMCFG), REG(SCPLLCTL), REG(SCPLLFCTRL), - REG(SCRESFRACT), REG(SCRESCTRL1), REG(SCRESXTRL2), REG(SCPEREN0), - REG(SCPEREN1), REG(SCPEREN2), REG(SCGRST), REG(SCPCIPMCR1), - REG(SCPCIPMCR2), REG(SCPCIPMSR1), REG(SCPCIPMSR2), REG(SCPCIPMSR3), - REG(SCINTREN), REG(SCRISR), REG(SCCLKSTAT0), REG(SCCLKSTAT1), - REG(SCCLKSTAT2), REG(SCRSTSTA), -}; -#undef REG +/* + * Special sta2x11-mfd regmap lock/unlock functions + */ -static struct debugfs_regset32 sctl_regset = { - .regs = sta2x11_sctl_regs, - .nregs = ARRAY_SIZE(sta2x11_sctl_regs), -}; +static void sta2x11_regmap_lock(void *__lock) +{ + spinlock_t *lock = __lock; + spin_lock(lock); +} -#define REG(regname) {.name = #regname, .offset = regname} -static struct debugfs_reg32 sta2x11_apbreg_regs[] = { - REG(APBREG_BSR), REG(APBREG_PAER), REG(APBREG_PWAC), REG(APBREG_PRAC), - REG(APBREG_PCG), REG(APBREG_PUR), REG(APBREG_EMU_PCG), -}; -#undef REG +static void sta2x11_regmap_unlock(void *__lock) +{ + spinlock_t *lock = __lock; + spin_unlock(lock); +} -static struct debugfs_regset32 apbreg_regset = { - .regs = sta2x11_apbreg_regs, - .nregs = ARRAY_SIZE(sta2x11_apbreg_regs), +static const char *sta2x11_mfd_names[sta2x11_n_mfd_plat_devs] = { + [sta2x11_sctl] = "sta2x11-sctl", + [sta2x11_apbreg] = "sta2x11-apbreg", + [sta2x11_apb_soc_regs] = "sta2x11-apb-soc-regs", }; -#define REG(regname) {.name = #regname, .offset = regname} -static struct debugfs_reg32 sta2x11_apb_soc_regs_regs[] = { - REG(PCIE_EP1_FUNC3_0_INTR_REG), REG(PCIE_EP1_FUNC7_4_INTR_REG), - REG(PCIE_EP2_FUNC3_0_INTR_REG), REG(PCIE_EP2_FUNC7_4_INTR_REG), - REG(PCIE_EP3_FUNC3_0_INTR_REG), REG(PCIE_EP3_FUNC7_4_INTR_REG), - REG(PCIE_EP4_FUNC3_0_INTR_REG), REG(PCIE_EP4_FUNC7_4_INTR_REG), - REG(PCIE_INTR_ENABLE0_REG), REG(PCIE_INTR_ENABLE1_REG), - REG(PCIE_EP1_FUNC_TC_REG), REG(PCIE_EP2_FUNC_TC_REG), - REG(PCIE_EP3_FUNC_TC_REG), REG(PCIE_EP4_FUNC_TC_REG), - REG(PCIE_EP1_FUNC_F_REG), REG(PCIE_EP2_FUNC_F_REG), - REG(PCIE_EP3_FUNC_F_REG), REG(PCIE_EP4_FUNC_F_REG), - REG(PCIE_PAB_AMBA_SW_RST_REG), REG(PCIE_PM_STATUS_0_PORT_0_4), - REG(PCIE_PM_STATUS_7_0_EP1), REG(PCIE_PM_STATUS_7_0_EP2), - REG(PCIE_PM_STATUS_7_0_EP3), REG(PCIE_PM_STATUS_7_0_EP4), - REG(PCIE_DEV_ID_0_EP1_REG), REG(PCIE_CC_REV_ID_0_EP1_REG), - REG(PCIE_DEV_ID_1_EP1_REG), REG(PCIE_CC_REV_ID_1_EP1_REG), - REG(PCIE_DEV_ID_2_EP1_REG), REG(PCIE_CC_REV_ID_2_EP1_REG), - REG(PCIE_DEV_ID_3_EP1_REG), REG(PCIE_CC_REV_ID_3_EP1_REG), - REG(PCIE_DEV_ID_4_EP1_REG), REG(PCIE_CC_REV_ID_4_EP1_REG), - REG(PCIE_DEV_ID_5_EP1_REG), REG(PCIE_CC_REV_ID_5_EP1_REG), - REG(PCIE_DEV_ID_6_EP1_REG), REG(PCIE_CC_REV_ID_6_EP1_REG), - REG(PCIE_DEV_ID_7_EP1_REG), REG(PCIE_CC_REV_ID_7_EP1_REG), - REG(PCIE_DEV_ID_0_EP2_REG), REG(PCIE_CC_REV_ID_0_EP2_REG), - REG(PCIE_DEV_ID_1_EP2_REG), REG(PCIE_CC_REV_ID_1_EP2_REG), - REG(PCIE_DEV_ID_2_EP2_REG), REG(PCIE_CC_REV_ID_2_EP2_REG), - REG(PCIE_DEV_ID_3_EP2_REG), REG(PCIE_CC_REV_ID_3_EP2_REG), - REG(PCIE_DEV_ID_4_EP2_REG), REG(PCIE_CC_REV_ID_4_EP2_REG), - REG(PCIE_DEV_ID_5_EP2_REG), REG(PCIE_CC_REV_ID_5_EP2_REG), - REG(PCIE_DEV_ID_6_EP2_REG), REG(PCIE_CC_REV_ID_6_EP2_REG), - REG(PCIE_DEV_ID_7_EP2_REG), REG(PCIE_CC_REV_ID_7_EP2_REG), - REG(PCIE_DEV_ID_0_EP3_REG), REG(PCIE_CC_REV_ID_0_EP3_REG), - REG(PCIE_DEV_ID_1_EP3_REG), REG(PCIE_CC_REV_ID_1_EP3_REG), - REG(PCIE_DEV_ID_2_EP3_REG), REG(PCIE_CC_REV_ID_2_EP3_REG), - REG(PCIE_DEV_ID_3_EP3_REG), REG(PCIE_CC_REV_ID_3_EP3_REG), - REG(PCIE_DEV_ID_4_EP3_REG), REG(PCIE_CC_REV_ID_4_EP3_REG), - REG(PCIE_DEV_ID_5_EP3_REG), REG(PCIE_CC_REV_ID_5_EP3_REG), - REG(PCIE_DEV_ID_6_EP3_REG), REG(PCIE_CC_REV_ID_6_EP3_REG), - REG(PCIE_DEV_ID_7_EP3_REG), REG(PCIE_CC_REV_ID_7_EP3_REG), - REG(PCIE_DEV_ID_0_EP4_REG), REG(PCIE_CC_REV_ID_0_EP4_REG), - REG(PCIE_DEV_ID_1_EP4_REG), REG(PCIE_CC_REV_ID_1_EP4_REG), - REG(PCIE_DEV_ID_2_EP4_REG), REG(PCIE_CC_REV_ID_2_EP4_REG), - REG(PCIE_DEV_ID_3_EP4_REG), REG(PCIE_CC_REV_ID_3_EP4_REG), - REG(PCIE_DEV_ID_4_EP4_REG), REG(PCIE_CC_REV_ID_4_EP4_REG), - REG(PCIE_DEV_ID_5_EP4_REG), REG(PCIE_CC_REV_ID_5_EP4_REG), - REG(PCIE_DEV_ID_6_EP4_REG), REG(PCIE_CC_REV_ID_6_EP4_REG), - REG(PCIE_DEV_ID_7_EP4_REG), REG(PCIE_CC_REV_ID_7_EP4_REG), - REG(PCIE_SUBSYS_VEN_ID_REG), REG(PCIE_COMMON_CLOCK_CONFIG_0_4_0), - REG(PCIE_MIPHYP_SSC_EN_REG), REG(PCIE_MIPHYP_ADDR_REG), - REG(PCIE_L1_ASPM_READY_REG), REG(PCIE_EXT_CFG_RDY_REG), - REG(PCIE_SoC_INT_ROUTER_STATUS0_REG), - REG(PCIE_SoC_INT_ROUTER_STATUS1_REG), - REG(PCIE_SoC_INT_ROUTER_STATUS2_REG), - REG(PCIE_SoC_INT_ROUTER_STATUS3_REG), - REG(DMA_IP_CTRL_REG), REG(DISP_BRIDGE_PU_PD_CTRL_REG), - REG(VIP_PU_PD_CTRL_REG), REG(USB_MLB_PU_PD_CTRL_REG), - REG(SDIO_PU_PD_MISCFUNC_CTRL_REG1), REG(SDIO_PU_PD_MISCFUNC_CTRL_REG2), - REG(UART_PU_PD_CTRL_REG), REG(ARM_Lock), REG(SYS_IO_CHAR_REG1), - REG(SYS_IO_CHAR_REG2), REG(SATA_CORE_ID_REG), REG(SATA_CTRL_REG), - REG(I2C_HSFIX_MISC_REG), REG(SPARE2_RESERVED), REG(SPARE3_RESERVED), - REG(MASTER_LOCK_REG), REG(SYSTEM_CONFIG_STATUS_REG), - REG(MSP_CLK_CTRL_REG), REG(COMPENSATION_REG1), REG(COMPENSATION_REG2), - REG(COMPENSATION_REG3), REG(TEST_CTL_REG), +static bool sta2x11_sctl_writeable_reg(struct device *dev, unsigned int reg) +{ + return !__reg_within_range(reg, SCTL_SCPCIECSBRST, SCTL_SCRSTSTA); +} + +static struct regmap_config sta2x11_sctl_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .lock = sta2x11_regmap_lock, + .unlock = sta2x11_regmap_unlock, + .max_register = SCTL_SCRSTSTA, + .writeable_reg = sta2x11_sctl_writeable_reg, }; -#undef REG -static struct debugfs_regset32 apb_soc_regs_regset = { - .regs = sta2x11_apb_soc_regs_regs, - .nregs = ARRAY_SIZE(sta2x11_apb_soc_regs_regs), +static bool sta2x11_apbreg_readable_reg(struct device *dev, unsigned int reg) +{ + /* Two blocks (CAN and MLB, SARAC) 0x100 bytes apart */ + if (reg >= APBREG_BSR_SARAC) + reg -= APBREG_BSR_SARAC; + switch (reg) { + case APBREG_BSR: + case APBREG_PAER: + case APBREG_PWAC: + case APBREG_PRAC: + case APBREG_PCG: + case APBREG_PUR: + case APBREG_EMU_PCG: + return true; + default: + return false; + } +} + +static bool sta2x11_apbreg_writeable_reg(struct device *dev, unsigned int reg) +{ + if (reg >= APBREG_BSR_SARAC) + reg -= APBREG_BSR_SARAC; + if (!sta2x11_apbreg_readable_reg(dev, reg)) + return false; + return reg != APBREG_PAER; +} + +static struct regmap_config sta2x11_apbreg_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .lock = sta2x11_regmap_lock, + .unlock = sta2x11_regmap_unlock, + .max_register = APBREG_EMU_PCG_SARAC, + .readable_reg = sta2x11_apbreg_readable_reg, + .writeable_reg = sta2x11_apbreg_writeable_reg, }; +static bool sta2x11_apb_soc_regs_readable_reg(struct device *dev, + unsigned int reg) +{ + return reg <= PCIE_SoC_INT_ROUTER_STATUS3_REG || + __reg_within_range(reg, DMA_IP_CTRL_REG, SPARE3_RESERVED) || + __reg_within_range(reg, MASTER_LOCK_REG, + SYSTEM_CONFIG_STATUS_REG) || + reg == MSP_CLK_CTRL_REG || + __reg_within_range(reg, COMPENSATION_REG1, TEST_CTL_REG); +} -static struct dentry *sta2x11_mfd_debugfs[sta2x11_n_mfd_plat_devs]; +static bool sta2x11_apb_soc_regs_writeable_reg(struct device *dev, + unsigned int reg) +{ + if (!sta2x11_apb_soc_regs_readable_reg(dev, reg)) + return false; + switch (reg) { + case PCIE_COMMON_CLOCK_CONFIG_0_4_0: + case SYSTEM_CONFIG_STATUS_REG: + case COMPENSATION_REG1: + case PCIE_SoC_INT_ROUTER_STATUS0_REG...PCIE_SoC_INT_ROUTER_STATUS3_REG: + case PCIE_PM_STATUS_0_PORT_0_4...PCIE_PM_STATUS_7_0_EP4: + return false; + default: + return true; + } +} -static struct debugfs_regset32 *sta2x11_mfd_regset[sta2x11_n_mfd_plat_devs] = { - [sta2x11_sctl] = &sctl_regset, - [sta2x11_apbreg] = &apbreg_regset, - [sta2x11_apb_soc_regs] = &apb_soc_regs_regset, +static struct regmap_config sta2x11_apb_soc_regs_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .lock = sta2x11_regmap_lock, + .unlock = sta2x11_regmap_unlock, + .max_register = TEST_CTL_REG, + .readable_reg = sta2x11_apb_soc_regs_readable_reg, + .writeable_reg = sta2x11_apb_soc_regs_writeable_reg, }; -static const char *sta2x11_mfd_names[sta2x11_n_mfd_plat_devs] = { - [sta2x11_sctl] = "sta2x11-sctl", - [sta2x11_apbreg] = "sta2x11-apbreg", - [sta2x11_apb_soc_regs] = "sta2x11-apb-soc-regs", +static struct regmap_config * +sta2x11_mfd_regmap_configs[sta2x11_n_mfd_plat_devs] = { + [sta2x11_sctl] = &sta2x11_sctl_regmap_config, + [sta2x11_apbreg] = &sta2x11_apbreg_regmap_config, + [sta2x11_apb_soc_regs] = &sta2x11_apb_soc_regs_regmap_config, }; /* Probe for the three platform devices */ @@ -250,12 +266,14 @@ static int sta2x11_mfd_platform_probe(struct platform_device *dev, struct sta2x11_mfd *mfd; struct resource *res; const char *name = sta2x11_mfd_names[index]; - struct debugfs_regset32 *regset = sta2x11_mfd_regset[index]; + struct regmap_config *regmap_config = sta2x11_mfd_regmap_configs[index]; pdev = dev->dev.platform_data; mfd = sta2x11_mfd_find(*pdev); if (!mfd) return -ENODEV; + if (!regmap_config) + return -ENODEV; res = platform_get_resource(dev, IORESOURCE_MEM, 0); if (!res) @@ -269,10 +287,16 @@ static int sta2x11_mfd_platform_probe(struct platform_device *dev, release_mem_region(res->start, resource_size(res)); return -ENOMEM; } - regset->base = mfd->regs[index]; - sta2x11_mfd_debugfs[index] = debugfs_create_regset32(name, - S_IFREG | S_IRUGO, - NULL, regset); + regmap_config->lock_arg = &mfd->lock; + /* + No caching, registers could be reached both via regmap and via + void __iomem * + */ + regmap_config->cache_type = REGCACHE_NONE; + mfd->regmap[index] = devm_regmap_init_mmio(&dev->dev, mfd->regs[index], + regmap_config); + WARN_ON(!mfd->regmap[index]); + return 0; } |