PCI: Bring the PCIe speed to MBps logic to new pcie_dev_speed_mbps()
Bring the switch case in pcie_link_speed_mbps() to new function to the header file so that it can be used in other places like in controller driver. Link: https://lore.kernel.org/linux-pci/20240619-opp_support-v15-3-aa769a2173a3@quicinc.com Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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@ -6020,24 +6020,7 @@ int pcie_link_speed_mbps(struct pci_dev *pdev)
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if (err)
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return err;
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switch (to_pcie_link_speed(lnksta)) {
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case PCIE_SPEED_2_5GT:
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return 2500;
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case PCIE_SPEED_5_0GT:
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return 5000;
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case PCIE_SPEED_8_0GT:
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return 8000;
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case PCIE_SPEED_16_0GT:
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return 16000;
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case PCIE_SPEED_32_0GT:
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return 32000;
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case PCIE_SPEED_64_0GT:
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return 64000;
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default:
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break;
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}
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return -EINVAL;
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return pcie_dev_speed_mbps(to_pcie_link_speed(lnksta));
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}
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EXPORT_SYMBOL(pcie_link_speed_mbps);
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@ -290,6 +290,28 @@ void pci_bus_put(struct pci_bus *bus);
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(speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
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0)
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static inline int pcie_dev_speed_mbps(enum pci_bus_speed speed)
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{
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switch (speed) {
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case PCIE_SPEED_2_5GT:
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return 2500;
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case PCIE_SPEED_5_0GT:
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return 5000;
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case PCIE_SPEED_8_0GT:
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return 8000;
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case PCIE_SPEED_16_0GT:
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return 16000;
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case PCIE_SPEED_32_0GT:
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return 32000;
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case PCIE_SPEED_64_0GT:
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return 64000;
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default:
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break;
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}
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return -EINVAL;
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}
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const char *pci_speed_string(enum pci_bus_speed speed);
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enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
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enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
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