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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/bcma/driver_pci.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'drivers/bcma/driver_pci.c')
| -rw-r--r-- | drivers/bcma/driver_pci.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c new file mode 100644 index 000000000..12b2cc9a3 --- /dev/null +++ b/drivers/bcma/driver_pci.c @@ -0,0 +1,306 @@ +/* + * Broadcom specific AMBA + * PCI Core + * + * Copyright 2005, 2011, Broadcom Corporation + * Copyright 2006, 2007, Michael Buesch <m@bues.ch> + * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de> + * + * Licensed under the GNU/GPL. See COPYING for details. + */ + +#include "bcma_private.h" +#include <linux/export.h> +#include <linux/bcma/bcma.h> + +/************************************************** + * R/W ops. + **************************************************/ + +u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address) +{ + pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_ADDR, address); + pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_ADDR); + return pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_DATA); +} + +static void bcma_pcie_write(struct bcma_drv_pci *pc, u32 address, u32 data) +{ + pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_ADDR, address); + pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_ADDR); + pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_DATA, data); +} + +static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u16 phy) +{ + u32 v; + int i; + + v = BCMA_CORE_PCI_MDIODATA_START; + v |= BCMA_CORE_PCI_MDIODATA_WRITE; + v |= (BCMA_CORE_PCI_MDIODATA_DEV_ADDR << + BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF); + v |= (BCMA_CORE_PCI_MDIODATA_BLK_ADDR << + BCMA_CORE_PCI_MDIODATA_REGADDR_SHF); + v |= BCMA_CORE_PCI_MDIODATA_TA; + v |= (phy << 4); + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_DATA, v); + + udelay(10); + for (i = 0; i < 200; i++) { + v = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_CONTROL); + if (v & BCMA_CORE_PCI_MDIOCTL_ACCESS_DONE) + break; + usleep_range(1000, 2000); + } +} + +static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u16 device, u8 address) +{ + int max_retries = 10; + u16 ret = 0; + u32 v; + int i; + + /* enable mdio access to SERDES */ + v = BCMA_CORE_PCI_MDIOCTL_PREAM_EN; + v |= BCMA_CORE_PCI_MDIOCTL_DIVISOR_VAL; + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, v); + + if (pc->core->id.rev >= 10) { + max_retries = 200; + bcma_pcie_mdio_set_phy(pc, device); + v = (BCMA_CORE_PCI_MDIODATA_DEV_ADDR << + BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF); + v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF); + } else { + v = (device << BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF_OLD); + v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF_OLD); + } + + v |= BCMA_CORE_PCI_MDIODATA_START; + v |= BCMA_CORE_PCI_MDIODATA_READ; + v |= BCMA_CORE_PCI_MDIODATA_TA; + + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_DATA, v); + /* Wait for the device to complete the transaction */ + udelay(10); + for (i = 0; i < max_retries; i++) { + v = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_CONTROL); + if (v & BCMA_CORE_PCI_MDIOCTL_ACCESS_DONE) { + udelay(10); + ret = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_DATA); + break; + } + usleep_range(1000, 2000); + } + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, 0); + return ret; +} + +static void bcma_pcie_mdio_write(struct bcma_drv_pci *pc, u16 device, + u8 address, u16 data) +{ + int max_retries = 10; + u32 v; + int i; + + /* enable mdio access to SERDES */ + v = BCMA_CORE_PCI_MDIOCTL_PREAM_EN; + v |= BCMA_CORE_PCI_MDIOCTL_DIVISOR_VAL; + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, v); + + if (pc->core->id.rev >= 10) { + max_retries = 200; + bcma_pcie_mdio_set_phy(pc, device); + v = (BCMA_CORE_PCI_MDIODATA_DEV_ADDR << + BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF); + v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF); + } else { + v = (device << BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF_OLD); + v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF_OLD); + } + + v |= BCMA_CORE_PCI_MDIODATA_START; + v |= BCMA_CORE_PCI_MDIODATA_WRITE; + v |= BCMA_CORE_PCI_MDIODATA_TA; + v |= data; + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_DATA, v); + /* Wait for the device to complete the transaction */ + udelay(10); + for (i = 0; i < max_retries; i++) { + v = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_CONTROL); + if (v & BCMA_CORE_PCI_MDIOCTL_ACCESS_DONE) + break; + usleep_range(1000, 2000); + } + pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, 0); +} + +static u16 bcma_pcie_mdio_writeread(struct bcma_drv_pci *pc, u16 device, + u8 address, u16 data) +{ + bcma_pcie_mdio_write(pc, device, address, data); + return bcma_pcie_mdio_read(pc, device, address); +} + +/************************************************** + * Early init. + **************************************************/ + +static void bcma_core_pci_fixcfg(struct bcma_drv_pci *pc) +{ + struct bcma_device *core = pc->core; + u16 val16, core_index; + uint regoff; + + regoff = BCMA_CORE_PCI_SPROM(BCMA_CORE_PCI_SPROM_PI_OFFSET); + core_index = (u16)core->core_index; + + val16 = pcicore_read16(pc, regoff); + if (((val16 & BCMA_CORE_PCI_SPROM_PI_MASK) >> BCMA_CORE_PCI_SPROM_PI_SHIFT) + != core_index) { + val16 = (core_index << BCMA_CORE_PCI_SPROM_PI_SHIFT) | + (val16 & ~BCMA_CORE_PCI_SPROM_PI_MASK); + pcicore_write16(pc, regoff, val16); + } +} + +/* + * Apply some early fixes required before accessing SPROM. + * See also si_pci_fixcfg. + */ +void bcma_core_pci_early_init(struct bcma_drv_pci *pc) +{ + if (pc->early_setup_done) + return; + + pc->hostmode = bcma_core_pci_is_in_hostmode(pc); + if (pc->hostmode) + goto out; + + bcma_core_pci_fixcfg(pc); + +out: + pc->early_setup_done = true; +} + +/************************************************** + * Workarounds. + **************************************************/ + +static u8 bcma_pcicore_polarity_workaround(struct bcma_drv_pci *pc) +{ + u32 tmp; + + tmp = bcma_pcie_read(pc, BCMA_CORE_PCI_PLP_STATUSREG); + if (tmp & BCMA_CORE_PCI_PLP_POLARITYINV_STAT) + return BCMA_CORE_PCI_SERDES_RX_CTRL_FORCE | + BCMA_CORE_PCI_SERDES_RX_CTRL_POLARITY; + else + return BCMA_CORE_PCI_SERDES_RX_CTRL_FORCE; +} + +static void bcma_pcicore_serdes_workaround(struct bcma_drv_pci *pc) +{ + u16 tmp; + + bcma_pcie_mdio_write(pc, BCMA_CORE_PCI_MDIODATA_DEV_RX, + BCMA_CORE_PCI_SERDES_RX_CTRL, + bcma_pcicore_polarity_workaround(pc)); + tmp = bcma_pcie_mdio_read(pc, BCMA_CORE_PCI_MDIODATA_DEV_PLL, + BCMA_CORE_PCI_SERDES_PLL_CTRL); + if (tmp & BCMA_CORE_PCI_PLL_CTRL_FREQDET_EN) + bcma_pcie_mdio_write(pc, BCMA_CORE_PCI_MDIODATA_DEV_PLL, + BCMA_CORE_PCI_SERDES_PLL_CTRL, + tmp & ~BCMA_CORE_PCI_PLL_CTRL_FREQDET_EN); +} + +/* Fix MISC config to allow coming out of L2/L3-Ready state w/o PRST */ +/* Needs to happen when coming out of 'standby'/'hibernate' */ +static void bcma_core_pci_config_fixup(struct bcma_drv_pci *pc) +{ + u16 val16; + uint regoff; + + regoff = BCMA_CORE_PCI_SPROM(BCMA_CORE_PCI_SPROM_MISC_CONFIG); + + val16 = pcicore_read16(pc, regoff); + + if (!(val16 & BCMA_CORE_PCI_SPROM_L23READY_EXIT_NOPERST)) { + val16 |= BCMA_CORE_PCI_SPROM_L23READY_EXIT_NOPERST; + pcicore_write16(pc, regoff, val16); + } +} + +/************************************************** + * Init. + **************************************************/ + +static void bcma_core_pci_clientmode_init(struct bcma_drv_pci *pc) +{ + bcma_pcicore_serdes_workaround(pc); + bcma_core_pci_config_fixup(pc); +} + +void bcma_core_pci_init(struct bcma_drv_pci *pc) +{ + if (pc->setup_done) + return; + + bcma_core_pci_early_init(pc); + + if (pc->hostmode) + bcma_core_pci_hostmode_init(pc); + else + bcma_core_pci_clientmode_init(pc); +} + +void bcma_core_pci_power_save(struct bcma_bus *bus, bool up) +{ + struct bcma_drv_pci *pc; + u16 data; + + if (bus->hosttype != BCMA_HOSTTYPE_PCI) + return; + + pc = &bus->drv_pci[0]; + + if (pc->core->id.rev >= 15 && pc->core->id.rev <= 20) { + data = up ? 0x74 : 0x7C; + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7F64); + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); + } else if (pc->core->id.rev >= 21 && pc->core->id.rev <= 22) { + data = up ? 0x75 : 0x7D; + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7E65); + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); + } +} +EXPORT_SYMBOL_GPL(bcma_core_pci_power_save); + +static void bcma_core_pci_extend_L1timer(struct bcma_drv_pci *pc, bool extend) +{ + u32 w; + + w = bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG); + if (extend) + w |= BCMA_CORE_PCI_ASPMTIMER_EXTEND; + else + w &= ~BCMA_CORE_PCI_ASPMTIMER_EXTEND; + bcma_pcie_write(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG, w); + bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_PMTHRESHREG); +} + +void bcma_core_pci_up(struct bcma_drv_pci *pc) +{ + bcma_core_pci_extend_L1timer(pc, true); +} + +void bcma_core_pci_down(struct bcma_drv_pci *pc) +{ + bcma_core_pci_extend_L1timer(pc, false); +} |
