On 10/31/2017 09:29 AM, Kishon Vijay Abraham I wrote:
(snip)
>>
>> +#ifdef CONFIG_PCI_DRA7XX_HOST
>
> This block can also be moved around the file so that there is a single +#ifdef
> CONFIG_PCI_DRA7XX_HOST in this file.
Hello Kishon,
Sure, will fix in V3.
>> static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
>> struct platform_device *pdev)
>> {
>> @@ -470,6 +475,7 @@ static int __init dra7xx_add_pcie_port(struct
>> dra7xx_pcie *dra7xx,
>>
>> return 0;
>> }
>> +#endif
>>
>> static const struct dw_pcie_ops dw_pcie_ops = {
>> .cpu_addr_fixup = dra7xx_pcie_cpu_addr_fixup,
>> @@ -517,23 +523,31 @@ static int dra7xx_pcie_enable_phy(struct dra7xx_pcie
>> *dra7xx)
>> return ret;
>> }
>
> IMO all the #ifdef's after this point can be removed.
I will remove the ifdefs in the match table and the ifdefs surrounding
the of match table data.
>>
>> +#ifdef CONFIG_PCI_DRA7XX_HOST
>> static const struct dra7xx_pcie_of_data dra7xx_pcie_rc_of_data = {
>> .mode = DW_PCIE_RC_TYPE,
>> };
>> +#endif
>>
>> +#ifdef CONFIG_PCI_DRA7XX_EP
>> static const struct dra7xx_pcie_of_data dra7xx_pcie_ep_of_data = {
>> .mode = DW_PCIE_EP_TYPE,
>> };
>> +#endif
>>
>> static const struct of_device_id of_dra7xx_pcie_match[] = {
>> +#ifdef CONFIG_PCI_DRA7XX_HOST
>> {
>> .compatible = "ti,dra7-pcie",
>> .data = &dra7xx_pcie_rc_of_data,
>> },
>> +#endif
>> +#ifdef CONFIG_PCI_DRA7XX_EP
>> {
>> .compatible = "ti,dra7-pcie-ep",
>> .data = &dra7xx_pcie_ep_of_data,
>> },
>> +#endif
>> {},
>> };
>>
>> @@ -548,6 +562,7 @@ static const struct of_device_id of_dra7xx_pcie_match[]
>> = {
>> *
>> * To avoid this issue set PCIE_SS1_AXI2OCP_LEGACY_MODE_ENABLE to 1.
>> */
>> +#ifdef CONFIG_PCI_DRA7XX_EP
>> static int dra7xx_pcie_ep_unaligned_memaccess(struct device *dev)
>> {
>> int ret;
>> @@ -578,6 +593,7 @@ static int dra7xx_pcie_ep_unaligned_memaccess(struct
>> device *dev)
>>
>> return ret;
>> }
>> +#endif
I will move this to the CONFIG_PCI_DRA7XX_EP block, so that there will only
be a single CONFIG_PCI_DRA7XX_EP ifdef surrounding EP specific functions.
>>
>> static int __init dra7xx_pcie_probe(struct platform_device *pdev)
>> {
>> @@ -681,6 +697,7 @@ static int __init dra7xx_pcie_probe(struct
>> platform_device *pdev)
>> dra7xx->link_gen = 2;
>>
>> switch (mode) {
>> +#ifdef CONFIG_PCI_DRA7XX_HOST
>> case DW_PCIE_RC_TYPE:
>> dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_DEVICE_TYPE,
>> DEVICE_TYPE_RC);
>> @@ -688,6 +705,8 @@ static int __init dra7xx_pcie_probe(struct
>> platform_device *pdev)
>> if (ret < 0)
>> goto err_gpio;
>> break;
>> +#endif
>> +#ifdef CONFIG_PCI_DRA7XX_EP
>> case DW_PCIE_EP_TYPE:
>> dra7xx_pcie_writel(dra7xx, PCIECTRL_TI_CONF_DEVICE_TYPE,
>> DEVICE_TYPE_EP);
>> @@ -700,6 +719,7 @@ static int __init dra7xx_pcie_probe(struct
>> platform_device *pdev)
>> if (ret < 0)
>> goto err_gpio;
>> break;
>> +#endif
Actually, these ifdefs has to stay, otherwise we get build warnings, since we
are calling functions that aren't defined (dra7xx_pcie_ep_unaligned_memaccess,
dra7xx_add_pcie_ep, dra7xx_add_pcie_port).
We could add dummy implementations for these inside an #else block following
the ifdef blocks. However, I think that adding dummy implementations in the
#else block is uglier and more verbose than keeping the ifdefs around the
two cases.
Regards,
Niklas
