^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * STA2x11 mfd for GPIO, SCTL and APBREG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2009-2011 Wind River Systems, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2011 ST Microelectronics (Alessandro Rubini, Davide Ciminaghi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mfd/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/mfd/sta2x11-mfd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/sta2x11.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static inline int __reg_within_range(unsigned int r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned int start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned int end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return ((r >= start) && (r <= end));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /* This describes STA2X11 MFD chip for us, we may have several */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct sta2x11_mfd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct sta2x11_instance *instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct regmap *regmap[sta2x11_n_mfd_plat_devs];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) spinlock_t lock[sta2x11_n_mfd_plat_devs];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) void __iomem *regs[sta2x11_n_mfd_plat_devs];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static LIST_HEAD(sta2x11_mfd_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Three functions to act on the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static struct sta2x11_mfd *sta2x11_mfd_find(struct pci_dev *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct sta2x11_instance *instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct sta2x11_mfd *mfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (!pdev && !list_empty(&sta2x11_mfd_list)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) pr_warn("%s: Unspecified device, using first instance\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return list_entry(sta2x11_mfd_list.next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct sta2x11_mfd, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) instance = sta2x11_get_instance(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (!instance)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) list_for_each_entry(mfd, &sta2x11_mfd_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (mfd->instance == instance)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return mfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int sta2x11_mfd_add(struct pci_dev *pdev, gfp_t flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct sta2x11_mfd *mfd = sta2x11_mfd_find(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct sta2x11_instance *instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (mfd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) instance = sta2x11_get_instance(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (!instance)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) mfd = kzalloc(sizeof(*mfd), flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (!mfd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) INIT_LIST_HEAD(&mfd->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) for (i = 0; i < ARRAY_SIZE(mfd->lock); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) spin_lock_init(&mfd->lock[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) mfd->instance = instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) list_add(&mfd->list, &sta2x11_mfd_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /* This function is exported and is not expected to fail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u32 __sta2x11_mfd_mask(struct pci_dev *pdev, u32 reg, u32 mask, u32 val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) enum sta2x11_mfd_plat_dev index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct sta2x11_mfd *mfd = sta2x11_mfd_find(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) u32 r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) void __iomem *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (!mfd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) dev_warn(&pdev->dev, ": can't access sctl regs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) regs = mfd->regs[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (!regs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) dev_warn(&pdev->dev, ": system ctl not initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) spin_lock_irqsave(&mfd->lock[index], flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) r = readl(regs + reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) r &= ~mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) r |= val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) writel(r, regs + reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) spin_unlock_irqrestore(&mfd->lock[index], flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) EXPORT_SYMBOL(__sta2x11_mfd_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int sta2x11_mfd_get_regs_data(struct platform_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) enum sta2x11_mfd_plat_dev index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) void __iomem **regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) spinlock_t **lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct pci_dev *pdev = *(struct pci_dev **)dev_get_platdata(&dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct sta2x11_mfd *mfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (!pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) mfd = sta2x11_mfd_find(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (!mfd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (index >= sta2x11_n_mfd_plat_devs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *regs = mfd->regs[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) *lock = &mfd->lock[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) pr_debug("%s %d *regs = %p\n", __func__, __LINE__, *regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return *regs ? 0 : -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) EXPORT_SYMBOL(sta2x11_mfd_get_regs_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * Special sta2x11-mfd regmap lock/unlock functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static void sta2x11_regmap_lock(void *__lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) spinlock_t *lock = __lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) spin_lock(lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static void sta2x11_regmap_unlock(void *__lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) spinlock_t *lock = __lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) spin_unlock(lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /* OTP (one time programmable registers do not require locking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static void sta2x11_regmap_nolock(void *__lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static const char *sta2x11_mfd_names[sta2x11_n_mfd_plat_devs] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) [sta2x11_sctl] = STA2X11_MFD_SCTL_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) [sta2x11_apbreg] = STA2X11_MFD_APBREG_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) [sta2x11_apb_soc_regs] = STA2X11_MFD_APB_SOC_REGS_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) [sta2x11_scr] = STA2X11_MFD_SCR_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static bool sta2x11_sctl_writeable_reg(struct device *dev, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return !__reg_within_range(reg, SCTL_SCPCIECSBRST, SCTL_SCRSTSTA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static struct regmap_config sta2x11_sctl_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .lock = sta2x11_regmap_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) .unlock = sta2x11_regmap_unlock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .max_register = SCTL_SCRSTSTA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .writeable_reg = sta2x11_sctl_writeable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) static bool sta2x11_scr_readable_reg(struct device *dev, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return (reg == STA2X11_SECR_CR) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) __reg_within_range(reg, STA2X11_SECR_FVR0, STA2X11_SECR_FVR1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static bool sta2x11_scr_writeable_reg(struct device *dev, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static struct regmap_config sta2x11_scr_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) .reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .lock = sta2x11_regmap_nolock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .unlock = sta2x11_regmap_nolock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) .max_register = STA2X11_SECR_FVR1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) .readable_reg = sta2x11_scr_readable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) .writeable_reg = sta2x11_scr_writeable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static bool sta2x11_apbreg_readable_reg(struct device *dev, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /* Two blocks (CAN and MLB, SARAC) 0x100 bytes apart */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (reg >= APBREG_BSR_SARAC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) reg -= APBREG_BSR_SARAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) switch (reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) case APBREG_BSR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) case APBREG_PAER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) case APBREG_PWAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) case APBREG_PRAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) case APBREG_PCG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) case APBREG_PUR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) case APBREG_EMU_PCG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static bool sta2x11_apbreg_writeable_reg(struct device *dev, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (reg >= APBREG_BSR_SARAC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) reg -= APBREG_BSR_SARAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (!sta2x11_apbreg_readable_reg(dev, reg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return reg != APBREG_PAER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static struct regmap_config sta2x11_apbreg_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) .reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .lock = sta2x11_regmap_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .unlock = sta2x11_regmap_unlock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) .max_register = APBREG_EMU_PCG_SARAC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .readable_reg = sta2x11_apbreg_readable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .writeable_reg = sta2x11_apbreg_writeable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static bool sta2x11_apb_soc_regs_readable_reg(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return reg <= PCIE_SoC_INT_ROUTER_STATUS3_REG ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) __reg_within_range(reg, DMA_IP_CTRL_REG, SPARE3_RESERVED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) __reg_within_range(reg, MASTER_LOCK_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) SYSTEM_CONFIG_STATUS_REG) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) reg == MSP_CLK_CTRL_REG ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) __reg_within_range(reg, COMPENSATION_REG1, TEST_CTL_REG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static bool sta2x11_apb_soc_regs_writeable_reg(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (!sta2x11_apb_soc_regs_readable_reg(dev, reg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) switch (reg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) case PCIE_COMMON_CLOCK_CONFIG_0_4_0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) case SYSTEM_CONFIG_STATUS_REG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) case COMPENSATION_REG1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) case PCIE_SoC_INT_ROUTER_STATUS0_REG...PCIE_SoC_INT_ROUTER_STATUS3_REG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) case PCIE_PM_STATUS_0_PORT_0_4...PCIE_PM_STATUS_7_0_EP4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static struct regmap_config sta2x11_apb_soc_regs_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) .reg_stride = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) .lock = sta2x11_regmap_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) .unlock = sta2x11_regmap_unlock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) .max_register = TEST_CTL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) .readable_reg = sta2x11_apb_soc_regs_readable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) .writeable_reg = sta2x11_apb_soc_regs_writeable_reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static struct regmap_config *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) sta2x11_mfd_regmap_configs[sta2x11_n_mfd_plat_devs] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) [sta2x11_sctl] = &sta2x11_sctl_regmap_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) [sta2x11_apbreg] = &sta2x11_apbreg_regmap_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) [sta2x11_apb_soc_regs] = &sta2x11_apb_soc_regs_regmap_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) [sta2x11_scr] = &sta2x11_scr_regmap_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* Probe for the four platform devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static int sta2x11_mfd_platform_probe(struct platform_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) enum sta2x11_mfd_plat_dev index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct pci_dev **pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct sta2x11_mfd *mfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) const char *name = sta2x11_mfd_names[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct regmap_config *regmap_config = sta2x11_mfd_regmap_configs[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) pdev = dev_get_platdata(&dev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) mfd = sta2x11_mfd_find(*pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (!mfd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (!regmap_config)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) res = platform_get_resource(dev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (!request_mem_region(res->start, resource_size(res), name))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) mfd->regs[index] = ioremap(res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (!mfd->regs[index]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) release_mem_region(res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) regmap_config->lock_arg = &mfd->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) No caching, registers could be reached both via regmap and via
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) void __iomem *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) regmap_config->cache_type = REGCACHE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) mfd->regmap[index] = devm_regmap_init_mmio(&dev->dev, mfd->regs[index],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) WARN_ON(IS_ERR(mfd->regmap[index]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static int sta2x11_sctl_probe(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return sta2x11_mfd_platform_probe(dev, sta2x11_sctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static int sta2x11_apbreg_probe(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return sta2x11_mfd_platform_probe(dev, sta2x11_apbreg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static int sta2x11_apb_soc_regs_probe(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return sta2x11_mfd_platform_probe(dev, sta2x11_apb_soc_regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static int sta2x11_scr_probe(struct platform_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return sta2x11_mfd_platform_probe(dev, sta2x11_scr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /* The three platform drivers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static struct platform_driver sta2x11_sctl_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) .name = STA2X11_MFD_SCTL_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) .probe = sta2x11_sctl_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static struct platform_driver sta2x11_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .name = STA2X11_MFD_APBREG_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) .probe = sta2x11_apbreg_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static struct platform_driver sta2x11_apb_soc_regs_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) .name = STA2X11_MFD_APB_SOC_REGS_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) .probe = sta2x11_apb_soc_regs_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static struct platform_driver sta2x11_scr_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) .name = STA2X11_MFD_SCR_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) .probe = sta2x11_scr_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) static struct platform_driver * const drivers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) &sta2x11_platform_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) &sta2x11_sctl_platform_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) &sta2x11_apb_soc_regs_platform_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) &sta2x11_scr_platform_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static int __init sta2x11_drivers_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * What follows are the PCI devices that host the above pdevs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * Each logic block is 4kB and they are all consecutive: we use this info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /* Mfd 0 device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) /* Mfd 0, Bar 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) enum mfd0_bar0_cells {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) STA2X11_GPIO_0 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) STA2X11_GPIO_1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) STA2X11_GPIO_2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) STA2X11_GPIO_3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) STA2X11_SCTL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) STA2X11_SCR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) STA2X11_TIME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /* Mfd 0 , Bar 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) enum mfd0_bar1_cells {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) STA2X11_APBREG = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) #define CELL_4K(_name, _cell) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) .name = _name, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) .start = _cell * 4096, .end = _cell * 4096 + 4095, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) .flags = IORESOURCE_MEM, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static const struct resource gpio_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /* 4 consecutive cells, 1 driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) .name = STA2X11_MFD_GPIO_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) .start = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) .end = (4 * 4096) - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) .flags = IORESOURCE_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static const struct resource sctl_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) CELL_4K(STA2X11_MFD_SCTL_NAME, STA2X11_SCTL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static const struct resource scr_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) CELL_4K(STA2X11_MFD_SCR_NAME, STA2X11_SCR),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) static const struct resource time_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) CELL_4K(STA2X11_MFD_TIME_NAME, STA2X11_TIME),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static const struct resource apbreg_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) CELL_4K(STA2X11_MFD_APBREG_NAME, STA2X11_APBREG),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) #define DEV(_name, _r) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) { .name = _name, .num_resources = ARRAY_SIZE(_r), .resources = _r, }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static struct mfd_cell sta2x11_mfd0_bar0[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /* offset 0: we add pdata later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) DEV(STA2X11_MFD_GPIO_NAME, gpio_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) DEV(STA2X11_MFD_SCTL_NAME, sctl_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) DEV(STA2X11_MFD_SCR_NAME, scr_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) DEV(STA2X11_MFD_TIME_NAME, time_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) static struct mfd_cell sta2x11_mfd0_bar1[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) DEV(STA2X11_MFD_APBREG_NAME, apbreg_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /* Mfd 1 devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /* Mfd 1, Bar 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) enum mfd1_bar0_cells {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) STA2X11_VIC = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /* Mfd 1, Bar 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) enum mfd1_bar1_cells {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) STA2X11_APB_SOC_REGS = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) static const struct resource vic_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) CELL_4K(STA2X11_MFD_VIC_NAME, STA2X11_VIC),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static const struct resource apb_soc_regs_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) CELL_4K(STA2X11_MFD_APB_SOC_REGS_NAME, STA2X11_APB_SOC_REGS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static struct mfd_cell sta2x11_mfd1_bar0[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) DEV(STA2X11_MFD_VIC_NAME, vic_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) static struct mfd_cell sta2x11_mfd1_bar1[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) DEV(STA2X11_MFD_APB_SOC_REGS_NAME, apb_soc_regs_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) static int sta2x11_mfd_suspend(struct pci_dev *pdev, pm_message_t state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) pci_save_state(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) pci_disable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) pci_set_power_state(pdev, pci_choose_state(pdev, state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) static int sta2x11_mfd_resume(struct pci_dev *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) pci_set_power_state(pdev, PCI_D0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) err = pci_enable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) pci_restore_state(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) struct sta2x11_mfd_bar_setup_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct mfd_cell *cells;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) int ncells;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) struct sta2x11_mfd_setup_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct sta2x11_mfd_bar_setup_data bars[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) #define STA2X11_MFD0 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) #define STA2X11_MFD1 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) static struct sta2x11_mfd_setup_data mfd_setup_data[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /* Mfd 0: gpio, sctl, scr, timers / apbregs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) [STA2X11_MFD0] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) .bars = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) [0] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) .cells = sta2x11_mfd0_bar0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) .ncells = ARRAY_SIZE(sta2x11_mfd0_bar0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) [1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) .cells = sta2x11_mfd0_bar1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) .ncells = ARRAY_SIZE(sta2x11_mfd0_bar1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) /* Mfd 1: vic / apb-soc-regs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) [STA2X11_MFD1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) .bars = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) [0] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) .cells = sta2x11_mfd1_bar0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) .ncells = ARRAY_SIZE(sta2x11_mfd1_bar0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) [1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) .cells = sta2x11_mfd1_bar1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) .ncells = ARRAY_SIZE(sta2x11_mfd1_bar1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) static void sta2x11_mfd_setup(struct pci_dev *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) struct sta2x11_mfd_setup_data *sd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) for (i = 0; i < ARRAY_SIZE(sd->bars); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) for (j = 0; j < sd->bars[i].ncells; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) sd->bars[i].cells[j].pdata_size = sizeof(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) sd->bars[i].cells[j].platform_data = &pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static int sta2x11_mfd_probe(struct pci_dev *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) const struct pci_device_id *pci_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) int err, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct sta2x11_mfd_setup_data *setup_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) dev_info(&pdev->dev, "%s\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) err = pci_enable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) dev_err(&pdev->dev, "Can't enable device.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) err = pci_enable_msi(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) dev_info(&pdev->dev, "Enable msi failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) setup_data = pci_id->device == PCI_DEVICE_ID_STMICRO_GPIO ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) &mfd_setup_data[STA2X11_MFD0] :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) &mfd_setup_data[STA2X11_MFD1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /* platform data is the pci device for all of them */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) sta2x11_mfd_setup(pdev, setup_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) /* Record this pdev before mfd_add_devices: their probe looks for it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (!sta2x11_mfd_find(pdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) sta2x11_mfd_add(pdev, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) /* Just 2 bars for all mfd's at present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) for (i = 0; i < 2; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) err = mfd_add_devices(&pdev->dev, -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) setup_data->bars[i].cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) setup_data->bars[i].ncells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) &pdev->resource[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) "mfd_add_devices[%d] failed: %d\n", i, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) goto err_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) err_disable:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) mfd_remove_devices(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) pci_disable_device(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) pci_disable_msi(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static const struct pci_device_id sta2x11_mfd_tbl[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_GPIO)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIC)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) {0,},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) static struct pci_driver sta2x11_mfd_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) .name = "sta2x11-mfd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) .id_table = sta2x11_mfd_tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) .probe = sta2x11_mfd_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) .suspend = sta2x11_mfd_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) .resume = sta2x11_mfd_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) static int __init sta2x11_mfd_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pr_info("%s\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) return pci_register_driver(&sta2x11_mfd_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) * All of this must be ready before "normal" devices like MMCI appear.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * But MFD (the pci device) can't be too early. The following choice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) * prepares platform drivers very early and probe the PCI device later,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) * but before other PCI devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) subsys_initcall(sta2x11_drivers_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) rootfs_initcall(sta2x11_mfd_init);