From 438df3ebe5f0ce408490a777a758d5905f0dd58f Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Wed, 29 Jun 2011 13:08:49 -0300 Subject: [PATCH] [media] s5p-csis: Handle all available power supplies On the SoCs this driver is intended to support the are three separate pins to supply the MIPI-CSIS subsystem: 1.1V or 1.2V, 1.8V and power supply for an internal PLL. This patch adds support for two separate voltage supplies to cover properly board configurations where PMIC requires to configure independently each external supply of the MIPI-CSI device. The 1.8V and PLL supply are assigned a single "vdd18" regulator supply name as it seems more reasonable than creating separate regulator supplies for them. While at here stop using the 'fixed_phy_vdd' platform_data field. It has been introduced for boards where the MIPI-CSIS supplies are not controllable. However it is not needed as those boards can use the dummy regulator. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s5p-fimc/mipi-csis.c | 49 +++++++++++++----------- 1 file changed, 26 insertions(+), 23 deletions(-) diff --git a/drivers/media/video/s5p-fimc/mipi-csis.c b/drivers/media/video/s5p-fimc/mipi-csis.c index ef056d6605ca..e34d4ba031b7 100644 --- a/drivers/media/video/s5p-fimc/mipi-csis.c +++ b/drivers/media/video/s5p-fimc/mipi-csis.c @@ -81,6 +81,12 @@ static char *csi_clock_name[] = { }; #define NUM_CSIS_CLOCKS ARRAY_SIZE(csi_clock_name) +static const char * const csis_supply_name[] = { + "vdd11", /* 1.1V or 1.2V (s5pc100) MIPI CSI suppply */ + "vdd18", /* VDD 1.8V and MIPI CSI PLL supply */ +}; +#define CSIS_NUM_SUPPLIES ARRAY_SIZE(csis_supply_name) + enum { ST_POWERED = 1, ST_STREAMING = 2, @@ -109,9 +115,9 @@ struct csis_state { 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]; int irq; - struct regulator *supply; u32 flags; const struct csis_pix_format *csis_fmt; struct v4l2_mbus_framefmt format; @@ -460,6 +466,7 @@ static int __devinit s5pcsis_probe(struct platform_device *pdev) struct resource *regs_res; struct csis_state *state; int ret = -ENOMEM; + int i; state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) @@ -519,14 +526,13 @@ static int __devinit s5pcsis_probe(struct platform_device *pdev) goto e_clkput; } - if (!pdata->fixed_phy_vdd) { - state->supply = regulator_get(&pdev->dev, "vdd"); - if (IS_ERR(state->supply)) { - ret = PTR_ERR(state->supply); - state->supply = NULL; - goto e_clkput; - } - } + for (i = 0; i < CSIS_NUM_SUPPLIES; i++) + state->supplies[i].supply = csis_supply_name[i]; + + ret = regulator_bulk_get(&pdev->dev, CSIS_NUM_SUPPLIES, + state->supplies); + if (ret) + goto e_clkput; ret = request_irq(state->irq, s5pcsis_irq_handler, 0, dev_name(&pdev->dev), state); @@ -561,8 +567,7 @@ static int __devinit s5pcsis_probe(struct platform_device *pdev) e_irqfree: free_irq(state->irq, state); e_regput: - if (state->supply) - regulator_put(state->supply); + regulator_bulk_free(CSIS_NUM_SUPPLIES, state->supplies); e_clkput: clk_disable(state->clock[CSIS_CLK_MUX]); s5pcsis_clk_put(state); @@ -592,11 +597,10 @@ static int s5pcsis_suspend(struct device *dev) ret = pdata->phy_enable(state->pdev, false); if (ret) goto unlock; - if (state->supply) { - ret = regulator_disable(state->supply); - if (ret) - goto unlock; - } + ret = regulator_bulk_disable(CSIS_NUM_SUPPLIES, + state->supplies); + if (ret) + goto unlock; clk_disable(state->clock[CSIS_CLK_GATE]); state->flags &= ~ST_POWERED; } @@ -622,16 +626,16 @@ static int s5pcsis_resume(struct device *dev) goto unlock; if (!(state->flags & ST_POWERED)) { - if (state->supply) - ret = regulator_enable(state->supply); + ret = regulator_bulk_enable(CSIS_NUM_SUPPLIES, + state->supplies); if (ret) goto unlock; - ret = pdata->phy_enable(state->pdev, true); if (!ret) { state->flags |= ST_POWERED; - } else if (state->supply) { - regulator_disable(state->supply); + } else { + regulator_bulk_disable(CSIS_NUM_SUPPLIES, + state->supplies); goto unlock; } clk_enable(state->clock[CSIS_CLK_GATE]); @@ -679,8 +683,7 @@ static int __devexit s5pcsis_remove(struct platform_device *pdev) pm_runtime_set_suspended(&pdev->dev); s5pcsis_clk_put(state); - if (state->supply) - regulator_put(state->supply); + regulator_bulk_free(CSIS_NUM_SUPPLIES, state->supplies); media_entity_cleanup(&state->sd.entity); free_irq(state->irq, state); -- 2.39.2