diff options
Diffstat (limited to 'drivers/media/platform/blackfin/ppi.c')
| -rw-r--r-- | drivers/media/platform/blackfin/ppi.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/media/platform/blackfin/ppi.c b/drivers/media/platform/blackfin/ppi.c index 15e9c2bac2b..cff63e511e6 100644 --- a/drivers/media/platform/blackfin/ppi.c +++ b/drivers/media/platform/blackfin/ppi.c @@ -19,6 +19,7 @@ #include <linux/module.h> #include <linux/slab.h> +#include <linux/platform_device.h> #include <asm/bfin_ppi.h> #include <asm/blackfin.h> @@ -205,6 +206,20 @@ static int ppi_set_params(struct ppi_if *ppi, struct ppi_params *params) int dma_config, bytes_per_line; int hcount, hdelay, samples_per_line; +#ifdef CONFIG_PINCTRL + static const char * const pin_state[] = {"8bit", "16bit", "24bit"}; + struct pinctrl *pctrl; + struct pinctrl_state *pstate; + + if (params->dlen > 24 || params->dlen <= 0) + return -EINVAL; + pctrl = devm_pinctrl_get(ppi->dev); + pstate = pinctrl_lookup_state(pctrl, + pin_state[(params->dlen + 7) / 8 - 1]); + if (pinctrl_select_state(pctrl, pstate)) + return -EINVAL; +#endif + bytes_per_line = params->width * params->bpp / 8; /* convert parameters unit from pixels to samples */ hcount = params->width * params->bpp / params->dlen; @@ -307,26 +322,30 @@ static void ppi_update_addr(struct ppi_if *ppi, unsigned long addr) set_dma_start_addr(ppi->info->dma_ch, addr); } -struct ppi_if *ppi_create_instance(const struct ppi_info *info) +struct ppi_if *ppi_create_instance(struct platform_device *pdev, + const struct ppi_info *info) { struct ppi_if *ppi; if (!info || !info->pin_req) return NULL; +#ifndef CONFIG_PINCTRL if (peripheral_request_list(info->pin_req, KBUILD_MODNAME)) { - pr_err("request peripheral failed\n"); + dev_err(&pdev->dev, "request peripheral failed\n"); return NULL; } +#endif ppi = kzalloc(sizeof(*ppi), GFP_KERNEL); if (!ppi) { peripheral_free_list(info->pin_req); - pr_err("unable to allocate memory for ppi handle\n"); + dev_err(&pdev->dev, "unable to allocate memory for ppi handle\n"); return NULL; } ppi->ops = &ppi_ops; ppi->info = info; + ppi->dev = &pdev->dev; pr_info("ppi probe success\n"); return ppi; |