/*
* Samsung S5P/EXYNOS4 SoC series MIPI-CSI receiver driver
*
- * Copyright (C) 2011 Samsung Electronics Co., Ltd.
- * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
+ * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd.
+ * Sylwester Nawrocki, <s.nawrocki@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* @pads: CSIS pads array
* @sd: v4l2_subdev associated with CSIS device instance
* @pdev: CSIS platform device
- * @regs_res: requested I/O register memory resource
* @regs: mmaped I/O registers memory
* @clock: CSIS clocks
* @irq: requested s5p-mipi-csis irq number
struct media_pad pads[CSIS_PADS_NUM];
struct v4l2_subdev sd;
struct platform_device *pdev;
- struct resource *regs_res;
void __iomem *regs;
struct regulator_bulk_data supplies[CSIS_NUM_SUPPLIES];
struct clk *clock[NUM_CSIS_CLOCKS];
{
struct s5p_platform_mipi_csis *pdata;
struct resource *mem_res;
- struct resource *regs_res;
struct csis_state *state;
int ret = -ENOMEM;
int i;
- state = kzalloc(sizeof(*state), GFP_KERNEL);
+ state = devm_kzalloc(&pdev->dev, sizeof(*state), GFP_KERNEL);
if (!state)
return -ENOMEM;
pdata = pdev->dev.platform_data;
if (pdata == NULL || pdata->phy_enable == NULL) {
dev_err(&pdev->dev, "Platform data not fully specified\n");
- goto e_free;
+ return -EINVAL;
}
if ((pdev->id == 1 && pdata->lanes > CSIS1_MAX_LANES) ||
pdata->lanes > CSIS0_MAX_LANES) {
- ret = -EINVAL;
dev_err(&pdev->dev, "Unsupported number of data lanes: %d\n",
pdata->lanes);
- goto e_free;
+ return -EINVAL;
}
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mem_res) {
- dev_err(&pdev->dev, "Failed to get IO memory region\n");
- goto e_free;
- }
-
- regs_res = request_mem_region(mem_res->start, resource_size(mem_res),
- pdev->name);
- if (!regs_res) {
- dev_err(&pdev->dev, "Failed to request IO memory region\n");
- goto e_free;
+ state->regs = devm_request_and_ioremap(&pdev->dev, mem_res);
+ if (state->regs == NULL) {
+ dev_err(&pdev->dev, "Failed to request and remap io memory\n");
+ return -ENXIO;
}
- state->regs_res = regs_res;
-
- state->regs = ioremap(mem_res->start, resource_size(mem_res));
- if (!state->regs) {
- dev_err(&pdev->dev, "Failed to remap IO region\n");
- goto e_reqmem;
- }
-
- ret = s5pcsis_clk_get(state);
- if (ret)
- goto e_unmap;
-
- clk_enable(state->clock[CSIS_CLK_MUX]);
- if (pdata->clk_rate)
- clk_set_rate(state->clock[CSIS_CLK_MUX], pdata->clk_rate);
- else
- dev_WARN(&pdev->dev, "No clock frequency specified!\n");
state->irq = platform_get_irq(pdev, 0);
if (state->irq < 0) {
- ret = state->irq;
dev_err(&pdev->dev, "Failed to get irq\n");
- goto e_clkput;
+ return state->irq;
}
for (i = 0; i < CSIS_NUM_SUPPLIES; i++)
ret = regulator_bulk_get(&pdev->dev, CSIS_NUM_SUPPLIES,
state->supplies);
+ if (ret)
+ return ret;
+
+ ret = s5pcsis_clk_get(state);
if (ret)
goto e_clkput;
- ret = request_irq(state->irq, s5pcsis_irq_handler, 0,
- dev_name(&pdev->dev), state);
+ clk_enable(state->clock[CSIS_CLK_MUX]);
+ if (pdata->clk_rate)
+ clk_set_rate(state->clock[CSIS_CLK_MUX], pdata->clk_rate);
+ else
+ dev_WARN(&pdev->dev, "No clock frequency specified!\n");
+
+ ret = devm_request_irq(&pdev->dev, state->irq, s5pcsis_irq_handler,
+ 0, dev_name(&pdev->dev), state);
if (ret) {
- dev_err(&pdev->dev, "request_irq failed\n");
+ dev_err(&pdev->dev, "Interrupt request failed\n");
goto e_regput;
}
ret = media_entity_init(&state->sd.entity,
CSIS_PADS_NUM, state->pads, 0);
if (ret < 0)
- goto e_irqfree;
+ goto e_clkput;
/* This allows to retrieve the platform device id by the host driver */
v4l2_set_subdevdata(&state->sd, pdev);
platform_set_drvdata(pdev, &state->sd);
pm_runtime_enable(&pdev->dev);
-
return 0;
-e_irqfree:
- free_irq(state->irq, state);
e_regput:
regulator_bulk_free(CSIS_NUM_SUPPLIES, state->supplies);
e_clkput:
clk_disable(state->clock[CSIS_CLK_MUX]);
s5pcsis_clk_put(state);
-e_unmap:
- iounmap(state->regs);
-e_reqmem:
- release_mem_region(regs_res->start, resource_size(regs_res));
-e_free:
- kfree(state);
return ret;
}
{
struct v4l2_subdev *sd = platform_get_drvdata(pdev);
struct csis_state *state = sd_to_csis_state(sd);
- struct resource *res = state->regs_res;
pm_runtime_disable(&pdev->dev);
s5pcsis_suspend(&pdev->dev);
clk_disable(state->clock[CSIS_CLK_MUX]);
pm_runtime_set_suspended(&pdev->dev);
-
s5pcsis_clk_put(state);
regulator_bulk_free(CSIS_NUM_SUPPLIES, state->supplies);
media_entity_cleanup(&state->sd.entity);
- free_irq(state->irq, state);
- iounmap(state->regs);
- release_mem_region(res->start, resource_size(res));
- kfree(state);
return 0;
}