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Date: Wed, 26 Jun 2024 13:45:41 +0300
From: Stanimir Varbanov <svarbanov@...e.de>
To: linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-rpi-kernel@...ts.infradead.org,
linux-pci@...r.kernel.org,
Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
Cc: Thomas Gleixner <tglx@...utronix.de>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Jim Quinlan <jim2101024@...il.com>,
Nicolas Saenz Julienne <nsaenz@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
kw@...ux.com,
Philipp Zabel <p.zabel@...gutronix.de>,
Andrea della Porta <andrea.porta@...e.com>,
Phil Elwell <phil@...pberrypi.com>,
Jonathan Bell <jonathan@...pberrypi.com>,
Stanimir Varbanov <svarbanov@...e.de>
Subject: [PATCH 4/7] PCI: brcmstb: Reuse config structure
Instead of copying fields from pcie_cfg_data structure to
brcm_pcie reference it directly.
Signed-off-by: Stanimir Varbanov <svarbanov@...e.de>
---
drivers/pci/controller/pcie-brcmstb.c | 44 ++++++++++++---------------
1 file changed, 20 insertions(+), 24 deletions(-)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index c08683febdd4..4ca509502336 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -184,9 +184,9 @@
#define SSC_STATUS_PLL_LOCK_MASK 0x800
#define PCIE_BRCM_MAX_MEMC 3
-#define IDX_ADDR(pcie) (pcie->reg_offsets[EXT_CFG_INDEX])
-#define DATA_ADDR(pcie) (pcie->reg_offsets[EXT_CFG_DATA])
-#define PCIE_RGR1_SW_INIT_1(pcie) (pcie->reg_offsets[RGR1_SW_INIT_1])
+#define IDX_ADDR(pcie) ((pcie)->cfg->offsets[EXT_CFG_INDEX])
+#define DATA_ADDR(pcie) ((pcie)->cfg->offsets[EXT_CFG_DATA])
+#define PCIE_RGR1_SW_INIT_1(pcie) ((pcie)->cfg->offsets[RGR1_SW_INIT_1])
/* Rescal registers */
#define PCIE_DVT_PMU_PCIE_PHY_CTRL 0xc700
@@ -261,22 +261,19 @@ struct brcm_pcie {
int gen;
u64 msi_target_addr;
struct brcm_msi *msi;
- const int *reg_offsets;
- enum pcie_type type;
struct reset_control *rescal;
struct reset_control *perst_reset;
int num_memc;
u64 memc_size[PCIE_BRCM_MAX_MEMC];
u32 hw_rev;
- void (*perst_set)(struct brcm_pcie *pcie, u32 val);
- void (*bridge_sw_init_set)(struct brcm_pcie *pcie, u32 val);
struct subdev_regulators *sr;
bool ep_wakeup_capable;
+ const struct pcie_cfg_data *cfg;
};
static inline bool is_bmips(const struct brcm_pcie *pcie)
{
- return pcie->type == BCM7435 || pcie->type == BCM7425;
+ return pcie->cfg->type == BCM7435 || pcie->cfg->type == BCM7425;
}
/*
@@ -878,16 +875,16 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
int ret, memc;
/* Reset the bridge */
- pcie->bridge_sw_init_set(pcie, 1);
+ pcie->cfg->bridge_sw_init_set(pcie, 1);
/* Ensure that PERST# is asserted; some bootloaders may deassert it. */
- if (pcie->type == BCM2711)
- pcie->perst_set(pcie, 1);
+ if (pcie->cfg->type == BCM2711)
+ pcie->cfg->perst_set(pcie, 1);
usleep_range(100, 200);
/* Take the bridge out of reset */
- pcie->bridge_sw_init_set(pcie, 0);
+ pcie->cfg->bridge_sw_init_set(pcie, 0);
tmp = readl(base + PCIE_MISC_HARD_PCIE_HARD_DEBUG);
if (is_bmips(pcie))
@@ -905,9 +902,9 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
*/
if (is_bmips(pcie))
burst = 0x1; /* 256 bytes */
- else if (pcie->type == BCM2711)
+ else if (pcie->cfg->type == BCM2711)
burst = 0x0; /* 128 bytes */
- else if (pcie->type == BCM7278)
+ else if (pcie->cfg->type == BCM7278)
burst = 0x3; /* 512 bytes */
else
burst = 0x2; /* 512 bytes */
@@ -1120,7 +1117,7 @@ static int brcm_pcie_start_link(struct brcm_pcie *pcie)
int ret, i;
/* Unassert the fundamental reset */
- pcie->perst_set(pcie, 0);
+ pcie->cfg->perst_set(pcie, 0);
/*
* Wait for 100ms after PERST# deassertion; see PCIe CEM specification
@@ -1320,7 +1317,7 @@ static void brcm_pcie_turn_off(struct brcm_pcie *pcie)
if (brcm_pcie_link_up(pcie))
brcm_pcie_enter_l23(pcie);
/* Assert fundamental reset */
- pcie->perst_set(pcie, 1);
+ pcie->cfg->perst_set(pcie, 1);
/* Deassert request for L23 in case it was asserted */
tmp = readl(base + PCIE_MISC_PCIE_CTRL);
@@ -1333,7 +1330,7 @@ static void brcm_pcie_turn_off(struct brcm_pcie *pcie)
writel(tmp, base + PCIE_MISC_HARD_PCIE_HARD_DEBUG);
/* Shutdown PCIe bridge */
- pcie->bridge_sw_init_set(pcie, 1);
+ pcie->cfg->bridge_sw_init_set(pcie, 1);
}
static int pci_dev_may_wakeup(struct pci_dev *dev, void *data)
@@ -1413,7 +1410,7 @@ static int brcm_pcie_resume_noirq(struct device *dev)
goto err_reset;
/* Take bridge out of reset so we can access the SERDES reg */
- pcie->bridge_sw_init_set(pcie, 0);
+ pcie->cfg->bridge_sw_init_set(pcie, 0);
/* SERDES_IDDQ = 0 */
tmp = readl(base + PCIE_MISC_HARD_PCIE_HARD_DEBUG);
@@ -1595,10 +1592,7 @@ static int brcm_pcie_probe(struct platform_device *pdev)
pcie = pci_host_bridge_priv(bridge);
pcie->dev = &pdev->dev;
pcie->np = np;
- pcie->reg_offsets = data->offsets;
- pcie->type = data->type;
- pcie->perst_set = data->perst_set;
- pcie->bridge_sw_init_set = data->bridge_sw_init_set;
+ pcie->cfg = data;
pcie->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pcie->base))
@@ -1645,7 +1639,8 @@ static int brcm_pcie_probe(struct platform_device *pdev)
goto fail;
pcie->hw_rev = readl(pcie->base + PCIE_MISC_REVISION);
- if (pcie->type == BCM4908 && pcie->hw_rev >= BRCM_PCIE_HW_REV_3_20) {
+ if (pcie->cfg->type == BCM4908 &&
+ pcie->hw_rev >= BRCM_PCIE_HW_REV_3_20) {
dev_err(pcie->dev, "hardware revision with unsupported PERST# setup\n");
ret = -ENODEV;
goto fail;
@@ -1660,7 +1655,8 @@ static int brcm_pcie_probe(struct platform_device *pdev)
}
}
- bridge->ops = pcie->type == BCM7425 ? &brcm7425_pcie_ops : &brcm_pcie_ops;
+ bridge->ops = pcie->cfg->type == BCM7425 ?
+ &brcm7425_pcie_ops : &brcm_pcie_ops;
bridge->sysdata = pcie;
platform_set_drvdata(pdev, pcie);
--
2.43.0
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