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ath10k: add resource init and deinit in ahb

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Add function to gather resources required for qca4019 to operate
(memory, irq, dma setting, clock init , rest control init) and
function release those resources when it's not needed.

Signed-off-by: Raja Mani <rmani@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Raja Mani 2016-01-27 15:24:32 +05:30 committed by Kalle Valo
parent 1c44fcb923
commit 704dc4e367
2 changed files with 129 additions and 0 deletions
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122
drivers/net/wireless/ath/ath10k/ahb.c
View File

@ -15,6 +15,8 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/reset.h>
#include "core.h"
@ -502,6 +504,126 @@ static void ath10k_ahb_irq_disable(struct ath10k *ar)
ath10k_pci_disable_and_clear_legacy_irq(ar);
}
static int ath10k_ahb_resource_init(struct ath10k *ar)
{
struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
struct platform_device *pdev;
struct device *dev;
struct resource *res;
int ret;
pdev = ar_ahb->pdev;
dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
ath10k_err(ar, "failed to get memory resource\n");
ret = -ENXIO;
goto out;
}
ar_ahb->mem = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(ar_ahb->mem)) {
ath10k_err(ar, "mem ioremap error\n");
ret = PTR_ERR(ar_ahb->mem);
goto out;
}
ar_ahb->mem_len = resource_size(res);
ar_ahb->gcc_mem = ioremap_nocache(ATH10K_GCC_REG_BASE,
ATH10K_GCC_REG_SIZE);
if (!ar_ahb->gcc_mem) {
ath10k_err(ar, "gcc mem ioremap error\n");
ret = -ENOMEM;
goto err_mem_unmap;
}
ar_ahb->tcsr_mem = ioremap_nocache(ATH10K_TCSR_REG_BASE,
ATH10K_TCSR_REG_SIZE);
if (!ar_ahb->tcsr_mem) {
ath10k_err(ar, "tcsr mem ioremap error\n");
ret = -ENOMEM;
goto err_gcc_mem_unmap;
}
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
ath10k_err(ar, "failed to set 32-bit dma mask: %d\n", ret);
goto err_tcsr_mem_unmap;
}
ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
ath10k_err(ar, "failed to set 32-bit consistent dma: %d\n",
ret);
goto err_tcsr_mem_unmap;
}
ret = ath10k_ahb_clock_init(ar);
if (ret)
goto err_tcsr_mem_unmap;
ret = ath10k_ahb_rst_ctrl_init(ar);
if (ret)
goto err_clock_deinit;
ar_ahb->irq = platform_get_irq_byname(pdev, "legacy");
if (ar_ahb->irq < 0) {
ath10k_err(ar, "failed to get irq number: %d\n", ar_ahb->irq);
goto err_clock_deinit;
}
ath10k_dbg(ar, ATH10K_DBG_BOOT, "irq: %d\n", ar_ahb->irq);
ath10k_dbg(ar, ATH10K_DBG_BOOT, "mem: 0x%p mem_len: %lu gcc mem: 0x%p tcsr_mem: 0x%p\n",
ar_ahb->mem, ar_ahb->mem_len,
ar_ahb->gcc_mem, ar_ahb->tcsr_mem);
return 0;
err_clock_deinit:
ath10k_ahb_clock_deinit(ar);
err_tcsr_mem_unmap:
iounmap(ar_ahb->tcsr_mem);
err_gcc_mem_unmap:
ar_ahb->tcsr_mem = NULL;
iounmap(ar_ahb->gcc_mem);
err_mem_unmap:
ar_ahb->gcc_mem = NULL;
devm_iounmap(&pdev->dev, ar_ahb->mem);
out:
ar_ahb->mem = NULL;
return ret;
}
static void ath10k_ahb_resource_deinit(struct ath10k *ar)
{
struct ath10k_ahb *ar_ahb = ath10k_ahb_priv(ar);
struct device *dev;
dev = &ar_ahb->pdev->dev;
if (ar_ahb->mem)
devm_iounmap(dev, ar_ahb->mem);
if (ar_ahb->gcc_mem)
iounmap(ar_ahb->gcc_mem);
if (ar_ahb->tcsr_mem)
iounmap(ar_ahb->tcsr_mem);
ar_ahb->mem = NULL;
ar_ahb->gcc_mem = NULL;
ar_ahb->tcsr_mem = NULL;
ath10k_ahb_clock_deinit(ar);
ath10k_ahb_rst_ctrl_deinit(ar);
}
static int ath10k_ahb_probe(struct platform_device *pdev)
{
return 0;

7
drivers/net/wireless/ath/ath10k/ahb.h
View File

@ -23,6 +23,7 @@
struct ath10k_ahb {
struct platform_device *pdev;
void __iomem *mem;
unsigned long mem_len;
void __iomem *gcc_mem;
void __iomem *tcsr_mem;
@ -41,6 +42,12 @@ struct ath10k_ahb {
#ifdef CONFIG_ATH10K_AHB
#define ATH10K_GCC_REG_BASE 0x1800000
#define ATH10K_GCC_REG_SIZE 0x60000
#define ATH10K_TCSR_REG_BASE 0x1900000
#define ATH10K_TCSR_REG_SIZE 0x80000
#define ATH10K_AHB_WLAN_CORE_ID_REG 0x82030
#define ATH10K_AHB_TCSR_WIFI0_GLB_CFG 0x49000