mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-03-16 04:04:06 +00:00
Merge branch 'CR_9860_SPI_6.6_hal.feng' into 'jh7110-6.6.y-devel'
CR_9860_SPI_6.6_hal.feng See merge request sdk/linux!1036
This commit is contained in:
andy.hu
commit
1afab1bbc4
2 changed files with 277 additions and 1 deletions
|
|
@ -9,6 +9,7 @@
|
|||
fragment@0 {
|
||||
target-path = "/soc/spi@10060000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
@ -17,6 +18,7 @@
|
|||
fragment@1 {
|
||||
target-path = "/soc/spi@10070000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
@ -25,6 +27,7 @@
|
|||
fragment@2 {
|
||||
target-path = "/soc/spi@10080000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
@ -33,6 +36,7 @@
|
|||
fragment@3 {
|
||||
target-path = "/soc/spi@12070000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
@ -41,6 +45,7 @@
|
|||
fragment@4 {
|
||||
target-path = "/soc/spi@12080000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
@ -49,6 +54,7 @@
|
|||
fragment@5 {
|
||||
target-path = "/soc/spi@12090000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
@ -57,6 +63,7 @@
|
|||
fragment@6 {
|
||||
target-path = "/soc/spi@120a0000";
|
||||
__overlay__ {
|
||||
compatible = "starfive,jh7110-spi-pl022";
|
||||
status = "okay";
|
||||
};
|
||||
};
|
||||
|
|
|
|||
|
|
@ -34,6 +34,9 @@
|
|||
#include <linux/of.h>
|
||||
#include <linux/pinctrl/consumer.h>
|
||||
#include <linux/reset.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/clk/clk-conf.h>
|
||||
#include <linux/pm_domain.h>
|
||||
|
||||
/*
|
||||
* This macro is used to define some register default values.
|
||||
|
|
@ -2088,7 +2091,10 @@ pl022_platform_data_dt_get(struct device *dev)
|
|||
return NULL;
|
||||
}
|
||||
|
||||
pd = devm_kzalloc(dev, sizeof(struct pl022_ssp_controller), GFP_KERNEL);
|
||||
if (strncmp(dev->bus->name, "platform", strlen("platform")))
|
||||
pd = devm_kzalloc(dev, sizeof(struct pl022_ssp_controller), GFP_KERNEL);
|
||||
else
|
||||
pd = kzalloc(sizeof(struct pl022_ssp_controller), GFP_KERNEL);
|
||||
if (!pd)
|
||||
return NULL;
|
||||
|
||||
|
|
@ -2100,6 +2106,172 @@ pl022_platform_data_dt_get(struct device *dev)
|
|||
return pd;
|
||||
}
|
||||
|
||||
static int pl022_platform_probe(struct platform_device *pdev, const struct amba_id *id)
|
||||
{
|
||||
struct device *dev = &pdev->dev;
|
||||
struct spi_controller *host;
|
||||
struct pl022_ssp_controller *platform_info;
|
||||
struct amba_device *adev;
|
||||
struct pl022 *pl022 = NULL;
|
||||
struct resource *res;
|
||||
int status = 0;
|
||||
int irq;
|
||||
|
||||
dev_info(dev,
|
||||
"ARM PL022 driver for StarFive SoC platform, device ID: 0x%08x\n",
|
||||
id->id);
|
||||
|
||||
adev = devm_kzalloc(dev, sizeof(*adev), GFP_KERNEL);
|
||||
adev->dev = pdev->dev;
|
||||
platform_info = pl022_platform_data_dt_get(dev);
|
||||
if (!platform_info) {
|
||||
dev_err(dev, "probe: no platform data defined\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
/* Allocate host with space for data */
|
||||
host = spi_alloc_host(dev, sizeof(struct pl022));
|
||||
if (host == NULL) {
|
||||
dev_err(dev, "probe - cannot alloc SPI host\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
pl022 = spi_controller_get_devdata(host);
|
||||
pl022->host = host;
|
||||
pl022->host_info = platform_info;
|
||||
pl022->adev = adev;
|
||||
pl022->vendor = id->data;
|
||||
pl022->host->dev.parent = &pdev->dev;
|
||||
/*
|
||||
* Bus Number Which has been Assigned to this SSP controller
|
||||
* on this board
|
||||
*/
|
||||
host->bus_num = platform_info->bus_id;
|
||||
host->cleanup = pl022_cleanup;
|
||||
host->setup = pl022_setup;
|
||||
/* If open CONFIG_PM, auto_runtime_pm should be false when of-platform.*/
|
||||
host->auto_runtime_pm = true;
|
||||
host->transfer_one_message = pl022_transfer_one_message;
|
||||
host->unprepare_transfer_hardware = pl022_unprepare_transfer_hardware;
|
||||
host->rt = platform_info->rt;
|
||||
host->dev.of_node = dev->of_node;
|
||||
host->use_gpio_descriptors = true;
|
||||
|
||||
/*
|
||||
* Supports mode 0-3, loopback, and active low CS. Transfers are
|
||||
* always MS bit first on the original pl022.
|
||||
*/
|
||||
host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;
|
||||
if (pl022->vendor->extended_cr)
|
||||
host->mode_bits |= SPI_LSB_FIRST;
|
||||
|
||||
dev_dbg(dev, "BUSNO: %d\n", host->bus_num);
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
pl022->phybase = res->start;
|
||||
pl022->virtbase = devm_ioremap_resource(dev, res);
|
||||
if (pl022->virtbase == NULL) {
|
||||
status = -ENOMEM;
|
||||
goto err_no_ioremap;
|
||||
}
|
||||
dev_info(dev, "mapped registers from %llx to %llx\n",
|
||||
pdev->resource->start, pdev->resource->end);
|
||||
|
||||
pl022->clk = devm_clk_get(dev, NULL);
|
||||
if (IS_ERR(pl022->clk)) {
|
||||
status = PTR_ERR(pl022->clk);
|
||||
dev_err(dev, "could not retrieve SSP/SPI bus clock\n");
|
||||
goto err_no_clk;
|
||||
}
|
||||
status = clk_prepare_enable(pl022->clk);
|
||||
if (status) {
|
||||
dev_err(dev, "could not enable SSP/SPI bus clock\n");
|
||||
goto err_no_clk_en;
|
||||
}
|
||||
|
||||
pl022->rst = devm_reset_control_get_exclusive(dev, NULL);
|
||||
if (!IS_ERR(pl022->rst)) {
|
||||
status = reset_control_deassert(pl022->rst);
|
||||
if (status) {
|
||||
dev_err(dev, "could not deassert SSP/SPI bus reset\n");
|
||||
goto err_no_rst_clr;
|
||||
}
|
||||
} else {
|
||||
status = PTR_ERR(pl022->rst);
|
||||
dev_err(dev, "could not retrieve SSP/SPI bus reset\n");
|
||||
goto err_no_rst;
|
||||
}
|
||||
|
||||
/* Initialize transfer pump */
|
||||
tasklet_init(&pl022->pump_transfers, pump_transfers,
|
||||
(unsigned long)pl022);
|
||||
|
||||
/* Disable SSP */
|
||||
writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)),
|
||||
SSP_CR1(pl022->virtbase));
|
||||
load_ssp_default_config(pl022);
|
||||
|
||||
/* Obtain IRQ line. */
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0) {
|
||||
status = -ENXIO;
|
||||
goto err_no_irq;
|
||||
}
|
||||
status = devm_request_irq(dev, irq, pl022_interrupt_handler,
|
||||
0, "pl022", pl022);
|
||||
if (status < 0) {
|
||||
dev_err(dev, "probe - cannot get IRQ (%d)\n", status);
|
||||
goto err_no_irq;
|
||||
}
|
||||
|
||||
/* Get DMA channels, try autoconfiguration first */
|
||||
status = pl022_dma_autoprobe(pl022);
|
||||
if (status == -EPROBE_DEFER) {
|
||||
dev_dbg(dev, "deferring probe to get DMA channel\n");
|
||||
goto err_no_irq;
|
||||
}
|
||||
|
||||
/* dma is not used unless configured in the device tree */
|
||||
platform_info->enable_dma = 0;
|
||||
|
||||
/* If that failed, use channels from platform_info */
|
||||
if (status == 0)
|
||||
platform_info->enable_dma = 1;
|
||||
else if (platform_info->enable_dma) {
|
||||
status = pl022_dma_probe(pl022);
|
||||
if (status != 0)
|
||||
platform_info->enable_dma = 0;
|
||||
}
|
||||
|
||||
/* Register with the SPI framework */
|
||||
dev_set_drvdata(dev, pl022);
|
||||
|
||||
status = devm_spi_register_controller(dev, host);
|
||||
if (status != 0) {
|
||||
dev_err(dev,
|
||||
"probe - problem registering spi host\n");
|
||||
goto err_spi_register;
|
||||
}
|
||||
dev_dbg(dev, "probe succeeded\n");
|
||||
|
||||
clk_disable_unprepare(pl022->clk);
|
||||
|
||||
return 0;
|
||||
err_spi_register:
|
||||
if (platform_info->enable_dma)
|
||||
pl022_dma_remove(pl022);
|
||||
err_no_irq:
|
||||
reset_control_assert(pl022->rst);
|
||||
err_no_rst_clr:
|
||||
err_no_rst:
|
||||
clk_disable_unprepare(pl022->clk);
|
||||
err_no_clk_en:
|
||||
err_no_clk:
|
||||
err_no_ioremap:
|
||||
release_mem_region(pdev->resource->start, resource_size(pdev->resource));
|
||||
spi_controller_put(host);
|
||||
return status;
|
||||
}
|
||||
|
||||
static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
|
||||
{
|
||||
struct device *dev = &adev->dev;
|
||||
|
|
@ -2230,6 +2402,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
|
||||
/* Register with the SPI framework */
|
||||
amba_set_drvdata(adev, pl022);
|
||||
|
||||
status = devm_spi_register_controller(&adev->dev, host);
|
||||
if (status != 0) {
|
||||
dev_err_probe(&adev->dev, status,
|
||||
|
|
@ -2238,6 +2411,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
}
|
||||
dev_dbg(dev, "probe succeeded\n");
|
||||
|
||||
platform_info->autosuspend_delay = 100;
|
||||
/* let runtime pm put suspend */
|
||||
if (platform_info->autosuspend_delay > 0) {
|
||||
dev_info(&adev->dev,
|
||||
|
|
@ -2247,6 +2421,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
platform_info->autosuspend_delay);
|
||||
pm_runtime_use_autosuspend(dev);
|
||||
}
|
||||
|
||||
pm_runtime_put(dev);
|
||||
|
||||
return 0;
|
||||
|
|
@ -2255,6 +2430,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
if (platform_info->enable_dma)
|
||||
pl022_dma_remove(pl022);
|
||||
err_no_irq:
|
||||
reset_control_assert(pl022->rst);
|
||||
err_no_rst_de:
|
||||
err_no_rst:
|
||||
clk_disable_unprepare(pl022->clk);
|
||||
|
|
@ -2264,6 +2440,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
|
|||
amba_release_regions(adev);
|
||||
err_no_ioregion:
|
||||
spi_controller_put(host);
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
|
|
@ -2456,7 +2633,11 @@ static int __init pl022_init(void)
|
|||
{
|
||||
return amba_driver_register(&pl022_driver);
|
||||
}
|
||||
#if !IS_MODULE(CONFIG_SPI_PL022)
|
||||
subsys_initcall(pl022_init);
|
||||
#else
|
||||
module_init(pl022_init);
|
||||
#endif
|
||||
|
||||
static void __exit pl022_exit(void)
|
||||
{
|
||||
|
|
@ -2464,6 +2645,94 @@ static void __exit pl022_exit(void)
|
|||
}
|
||||
module_exit(pl022_exit);
|
||||
|
||||
/*
|
||||
* Register PL022 in platform bus to accommodate overlay use.
|
||||
* Because overlay only trigger response from the platform bus
|
||||
* not amba bus.
|
||||
*/
|
||||
static int starfive_of_pl022_probe(struct platform_device *pdev)
|
||||
{
|
||||
int ret;
|
||||
const struct amba_id id = {
|
||||
.id = 0x00041022,
|
||||
.mask = 0x000fffff,
|
||||
.data = &vendor_arm
|
||||
};
|
||||
struct device *dev = &pdev->dev;
|
||||
|
||||
ret = of_clk_set_defaults(dev->of_node, false);
|
||||
if (ret < 0)
|
||||
goto err_probe;
|
||||
|
||||
ret = dev_pm_domain_attach(dev, true);
|
||||
if (ret)
|
||||
goto err_probe;
|
||||
|
||||
ret = pl022_platform_probe(pdev, &id);
|
||||
|
||||
pm_runtime_enable(dev);
|
||||
pm_runtime_set_autosuspend_delay(dev, 100);
|
||||
pm_runtime_use_autosuspend(dev);
|
||||
|
||||
if (ret) {
|
||||
pm_runtime_disable(dev);
|
||||
pm_runtime_set_suspended(dev);
|
||||
pm_runtime_put_noidle(dev);
|
||||
dev_pm_domain_detach(dev, true);
|
||||
}
|
||||
|
||||
err_probe:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int starfive_of_pl022_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct pl022 *pl022 = dev_get_drvdata(&pdev->dev);
|
||||
|
||||
if (!pl022)
|
||||
return 0;
|
||||
|
||||
pm_runtime_get_sync(&pdev->dev);
|
||||
pm_runtime_get_noresume(&pdev->dev);
|
||||
|
||||
load_ssp_default_config(pl022);
|
||||
if (pl022->host_info->enable_dma)
|
||||
pl022_dma_remove(pl022);
|
||||
|
||||
clk_disable_unprepare(pl022->clk);
|
||||
tasklet_disable(&pl022->pump_transfers);
|
||||
|
||||
pm_runtime_put_noidle(&pdev->dev);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
pm_runtime_set_suspended(&pdev->dev);
|
||||
pm_runtime_put_noidle(&pdev->dev);
|
||||
dev_pm_domain_detach(&pdev->dev, true);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id starfive_of_pl022_match[] = {
|
||||
{ .compatible = "starfive,jh7110-spi-pl022" },
|
||||
{ },
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, starfive_of_pl022_match);
|
||||
|
||||
static struct platform_driver starfive_of_pl022_driver = {
|
||||
.driver = {
|
||||
.name = "starfive-spi-pl022",
|
||||
.of_match_table = starfive_of_pl022_match,
|
||||
.pm = &pl022_dev_pm_ops,
|
||||
},
|
||||
.probe = starfive_of_pl022_probe,
|
||||
.remove = starfive_of_pl022_remove,
|
||||
};
|
||||
|
||||
#if !IS_MODULE(CONFIG_SPI_PL022)
|
||||
module_platform_driver(starfive_of_pl022_driver);
|
||||
#endif
|
||||
/* platform register end */
|
||||
|
||||
MODULE_AUTHOR("xingyu.wu <xingyu.wu@starfivetech.com>");
|
||||
MODULE_AUTHOR("Linus Walleij <linus.walleij@stericsson.com>");
|
||||
MODULE_DESCRIPTION("PL022 SSP Controller Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue