diff options
| -rw-r--r-- | drivers/acpi/acpi_lpss.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index db3498bc4c2a..b693098f2160 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -84,6 +84,7 @@ static struct lpss_device_desc lpss_dma_desc = { struct lpss_private_data { void __iomem *mmio_base; resource_size_t mmio_size; + unsigned int fixed_clk_rate; struct clk *clk; const struct lpss_device_desc *dev_desc; u32 prv_reg_ctx[LPSS_PRV_REG_COUNT]; @@ -103,7 +104,7 @@ static void lpss_uart_setup(struct lpss_private_data *pdata) writel(reg | LPSS_GENERAL_UART_RTS_OVRD, pdata->mmio_base + offset); } -static void lpss_i2c_setup(struct lpss_private_data *pdata) +static void byt_i2c_setup(struct lpss_private_data *pdata) { unsigned int offset; u32 val; @@ -112,6 +113,9 @@ static void lpss_i2c_setup(struct lpss_private_data *pdata) val = readl(pdata->mmio_base + offset); val |= LPSS_RESETS_RESET_APB | LPSS_RESETS_RESET_FUNC; writel(val, pdata->mmio_base + offset); + + if (readl(pdata->mmio_base + pdata->dev_desc->prv_offset)) + pdata->fixed_clk_rate = 133000000; } static struct lpss_device_desc lpt_dev_desc = { @@ -161,16 +165,10 @@ static struct lpss_device_desc byt_sdio_dev_desc = { .flags = LPSS_CLK, }; -static struct lpss_shared_clock i2c_clock = { - .name = "i2c_clk", - .rate = 100000000, -}; - static struct lpss_device_desc byt_i2c_dev_desc = { .flags = LPSS_CLK | LPSS_SAVE_CTX, .prv_offset = 0x800, - .shared_clock = &i2c_clock, - .setup = lpss_i2c_setup, + .setup = byt_i2c_setup, }; static struct lpss_shared_clock bsw_pwm_clock = { @@ -286,6 +284,12 @@ static int register_device_clock(struct acpi_device *adev, parent = shared_clock->name; } + if (pdata->fixed_clk_rate) { + clk = clk_register_fixed_rate(NULL, devname, parent, 0, + pdata->fixed_clk_rate); + goto out; + } + if (dev_desc->flags & LPSS_CLK_GATE) { clk = clk_register_gate(NULL, devname, parent, 0, prv_base, 0, 0, NULL); @@ -316,7 +320,7 @@ static int register_device_clock(struct acpi_device *adev, kfree(parent); kfree(clk_name); } - +out: if (IS_ERR(clk)) return PTR_ERR(clk); @@ -364,6 +368,9 @@ static int acpi_lpss_create_device(struct acpi_device *adev, pdata->dev_desc = dev_desc; + if (dev_desc->setup) + dev_desc->setup(pdata); + if (dev_desc->flags & LPSS_CLK) { ret = register_device_clock(adev, pdata); if (ret) { @@ -385,9 +392,6 @@ static int acpi_lpss_create_device(struct acpi_device *adev, goto err_out; } - if (dev_desc->setup) - dev_desc->setup(pdata); - adev->driver_data = pdata; pdev = acpi_create_platform_device(adev); if (!IS_ERR_OR_NULL(pdev)) { |